React Native staff augmentation brings mobile developers into an existing engineering team while product ownership stays in-house. It is useful when a release needs extra capacity, a native integration needs specialist attention, or an app upgrade exceeds the team's current expertise. Sharing a codebase across iOS and Android still calls for developers who understand platform behavior, testing, and release workflows. A workable engagement also needs clear working hours and a practical plan for onboarding.
1. Itexus
Itexus develops financial software and supplies engineers who join existing product teams. Its mobile practice includes React Native, alongside native iOS and Android development. The company works on mobile banking, digital wallets, trading interfaces, and investment products, with particular attention to the integrations and security requirements behind those applications.
Staff augmentation follows the client's architecture, delivery priorities, and engineering practices. Businesses can review developer profiles and interview candidates before agreeing on the team structure. Itexus also brings backend engineering, QA, and cloud expertise to financial projects, which matters when a mobile feature depends on payment processing, identity checks, or changes to an existing platform. Its financial software focus gives the engagement a clear domain context.
Key Facts
- Best for: Fintech teams expanding mobile development capacity
- Core services: React native staff augmentation, mobile development, backend integrations, QA
- Specialization: Banking, payments, trading, and investment software
- Technologies: React Native, Swift, Kotlin, Java, .NET, TypeScript
- Headquarters: Dover, DE, USA
- Founded: 2013
- Team size: 150+ engineers
Contact Information
- Website: itexus.com
- Email: moc.suxeti@ofni
- Facebook: www.facebook.com/itexus
- Twitter: x.com/ItexusSoft
- LinkedIn: www.linkedin.com/company/itexus
- Instagram: www.instagram.com/itexus.soft
- Address: 8, The Green, STE road, Dover, DE 19901
2. Margelo
Margelo is a React Native specialist whose engineers join client teams to move architecture, upgrades, performance and feature work faster. Beyond team extension, it builds apps from design to App Store release and takes on narrow, hard areas such as camera pipelines, on-device AI features and native modules.
The company created VisionCamera and maintains libraries such as MMKV, Nitro, Fast TFLite and Quick Crypto, and it reports more than 800 contributions to React Native core. It suits teams with demanding performance or native-integration problems.
Key Facts
- Best for: Performance-critical React Native apps and native integrations
- Core services: Team extension, app builds, AI integrations, camera integrations
- Specialization: Native modules, camera pipelines, React Native performance
- Headquarters: Vienna, Austria
- Founded: 2021
- Team size: 11–50 employees
Contact Information
- Website: margelo.com
- LinkedIn: www.linkedin.com/company/margelo
3. Theodo
Theodo is a technology consultancy whose mobile arm, BAM, designs and develops mobile applications and has worked with React Native since 2015, according to Expo's consultant directory. Besides delivering projects, Theodo runs a technical assistance practice that places experienced engineers inside client organisations, working with the client's own practices and technologies. It suits larger organisations that want React Native engineers backed by a broader consultancy.
Key Facts
- Best for: Enterprises needing React Native engineers within a larger consultancy
- Core services: Mobile app development, technical assistance, product design
- Specialization: React Native and Kotlin Multiplatform mobile development
- Headquarters: Paris, France
- Founded: 2009
- Team size: 501–1,000 employees
Contact Information
- Website: theodo.com
- LinkedIn: www.linkedin.com/company/theodo/
4. Callstack
Callstack works with React and React Native product teams on feature development, architecture, and difficult mobile engineering problems. Its engineers join client teams or take responsibility for a defined project. The technical scope extends to native modules, performance optimization, application upgrades, and introducing React Native into existing iOS and Android applications.
Framework contributions and open-source maintenance are central to the company's work. Callstack maintains React Native testing tools and supports the build, testing, and release infrastructure around production applications. It also trains internal engineers using their own codebase and delivery challenges. That combination gives teams access to specialists who work on both application code and the tools used to maintain it.
Key Facts
- Best for: Production apps needing specialist React Native engineering
- Core services: Team extension, feature development, migrations, performance work
- Specialization: Native modules, mobile architecture, testing, release infrastructure
- Notable strength: React Native core contributions and open-source tooling
- Headquarters: Wrocław, Poland
- Founded: 2016
- Team size: 51–200 employees
Contact Information
- Website: www.callstack.com
- Email: moc.kcatsllac@selas
- Twitter: x.com/callstackio
- LinkedIn: www.linkedin.com/company/callstack
- Instagram: www.instagram.com/callstackteam
- Address: 945 Market Street, San Francisco, CA 94103, US
5. OSKI Solutions
OSKI Solutions develops React Native applications with TypeScript, covering shared mobile code, native modules and backend integrations. Its engineers work with Expo, React Navigation, Reanimated and Redux Toolkit. When an application needs device-specific functionality, the team writes Swift or Kotlin modules and connects them to the shared codebase.
The work also covers dependency upgrades, automated builds, code signing and releases to the App Store and Google Play. OSKI assembles senior teams around the product's technical requirements and supports integration into existing workflows. This combination is useful for a business extending a React web product to mobile or adding engineers to an application that already needs regular releases and platform updates.
Key Facts
- Best for: React Native products requiring native modules and release engineering
- Core services: React Native development, API integration, modernization and ongoing support
- Technologies: TypeScript, Expo, React Navigation, Reanimated, Swift and Kotlin
- Headquarters: Tallinn, Estonia
- Team size: 51–200 employees
Contact Information
- Website: oski.site
- Email: etis.ikso@tcatnoc
- LinkedIn: www.linkedin.com/company/oski-solutions
6. Software Mansion
Software Mansion offers embedded engineers, senior team extension, consulting, and technical training. Its developers contribute to React Native and Expo and work across mobile, web, and backend systems. Engineers joining a client team follow that team's processes and tools, while senior specialists address problems involving native components, performance, or complex feature requirements.
The engagement also includes knowledge sharing through code reviews, pair programming, and workshops. Its work with Photobucket involved modernizing a React Native application and transferring the knowledge needed to maintain it. This approach fits engineering teams that need additional delivery capacity and want their internal developers to understand the changes being made.
Key Facts
- Best for: Teams facing complex framework or native engineering work
- Core services: Embedded engineers, senior team extension, consulting, training
- Specialization: React Native, Expo, mobile and backend engineering
- Notable strength: Knowledge transfer through reviews, workshops, and pair programming
- Headquarters: Kraków, Poland
- Founded: 2012
- Team size: 201–500 employees
Contact Information
- Website: swmansion.com
- Email: moc.noisnamws@stcejorp
- Facebook: www.facebook.com/SoftwareMansion
- Twitter: x.com/swmansion
- LinkedIn: www.linkedin.com/company/software-mansion
- Instagram: www.instagram.com/swmansion
- Address: ul. Zabłocie 43b, 30-701 Kraków. Poland
7. Infinite Red
Infinite Red focuses on React Native consulting and mobile engineering, with senior developers working alongside client teams. Its work covers new applications, existing codebases, framework upgrades, and training. The company maintains Ignite and Reactotron and runs the Chain React conference, giving its consulting practice a close connection to the framework's developer community.
Internal teams receive help with implementation as well as the knowledge needed to take over an application. Infinite Red's consultants work through technical decisions with clients and train their engineers during development. The company is a practical fit for businesses seeking experienced React Native contributors and support for the people who will maintain the product afterward.
Key Facts
- Best for: Teams seeking senior React Native consultants and training
- Core services: Mobile development, consulting, upgrades, team support
- Specialization: React Native applications
- Notable strength: Maintains Ignite and Reactotron
Contact Information
- Website: infinite.red
- Email: der.etinifni@olleh
- Twitter: x.com/infinite_red
- LinkedIn: www.linkedin.com/company/infinitered
8. A-listware
A-listware combines mobile development with staff augmentation and dedicated team services. Its mobile specialists work with React Native and Flutter as well as native iOS and Android technologies. Projects include customer-facing and enterprise applications, with features such as payments, messaging, location services and push notifications.
The company handles recruitment and onboarding for remote engineering teams, while development work can include design, testing and post-launch support. Its project practices cover requirements, documentation, progress reporting and changing priorities. For a business adding capacity to an existing React Native team, the relevant advantage is access to mobile developers alongside QA and other technical roles, rather than having to arrange each discipline separately.
Key Facts
- Best for: Businesses extending mobile teams with developers and QA specialists
- Core services: Staff augmentation, mobile development, UI/UX design and testing
- Technologies: React Native, Flutter, Swift and Kotlin
- Contact locations: North Bergen, USA, and St. Leonards-on-Sea, UK
- Headquarters: London, UK
Contact Information
- Website: a-listware.com
- Email: moc.erawtsil-a@ofni
- Facebook: www.facebook.com/alistware
- LinkedIn: www.linkedin.com/company/a-listware
- Phone: +1 888 337 9373
- Address: North Bergen, NJ 07047, USA
9. Netguru
Netguru combines staff augmentation with a broader product development practice. Businesses can add mobile developers, designers, QA testers, DevOps engineers, and product managers to an existing team. Its React Native work covers application development, interface design, testing, and ongoing improvements across iOS and Android.
The mobile portfolio includes a React Native application for Candis, extending its invoice processing product beyond a web-only experience. For staff augmentation, specialists work under the client's management and integrate into existing workflows. Access to design and QA roles alongside developers is useful when a mobile roadmap involves more than implementing screens, such as refining user journeys or coordinating testing across devices.
Key Facts
- Best for: Product teams adding mobile engineering, design, and QA capacity
- Core services: Staff augmentation, React Native development, product design, testing
- Engagement model: Specialists integrated into client-managed teams
- Notable projects: Mobile extension of Candis's invoice processing product
- Headquarters: Poznań, Poland
- Founded: 2008
- Team size: 501–1,000 employees
Contact Information
- Website: www.netguru.com
- Email: moc.urugten@olleh
- LinkedIn: www.linkedin.com/company/netguru
- Address: Nowe Garbary Office Center, ul. Małe Garbary 9, 61-756 Poznań, Poland
10. Pagepro
Pagepro concentrates on React, React Native, Next.js, and Expo development. Its team augmentation service adds developers to companies that need extra capacity or mobile expertise. One use case is a business with an established web product and internal engineering team that wants to launch a mobile application without recruiting an entire mobile department.
The company's narrow JavaScript focus connects web and mobile development within the same technical ecosystem. Pagepro also works with Expo and the build and publishing steps involved in releasing applications to iOS and Android. For teams already using React, this is a focused way to add mobile skills while keeping the product roadmap and existing development team together.
Key Facts
- Best for: React-based product teams adding a mobile application
- Core services: Team augmentation, React Native and Expo development
- Specialization: JavaScript web and cross-platform mobile products
- Technologies: React, React Native, Next.js, Expo
- Headquarters: Białystok, Poland
Contact Information
- Website: pagepro.co
- Email: oc.orpegap@selas
- Facebook: www.facebook.com/thisispagepro
- Twitter: x.com/pagepro_agency
- LinkedIn: www.linkedin.com/company/pagepro
- Instagram: www.instagram.com/pagepro_
- Address: Dąbrowskiego 28, 15-872 Białystok, Poland
- Phone: +48 883 782 000
11. NeoWork
NeoWork recruits React Native developers from Colombia and the Philippines and integrates them into clients' existing engineering teams. Its developers work with JavaScript, TypeScript, state management, API connections, and platform-specific optimization. The service covers new mobile applications, migration from native applications, and continued development of products already in use.
Clients direct the day-to-day work, while NeoWork handles recruitment, employee benefits, and ongoing staff support. Team members learn the client's architecture, coding standards, and project tools during onboarding. Its flexible staffing model supports individual contributors and larger teams, with developers dedicated to a single account. The arrangement suits businesses that want mobile engineering capacity within their own workflows and help managing the employment side of a distributed team.
Key Facts
- Best for: Businesses building an ongoing distributed mobile team
- Core services: React Native developer staffing, mobile development, migrations, API integration
- Talent locations: Colombia and the Philippines
- Engagement model: Dedicated contributors managed day to day by the client
- Headquarters: Miami, FL, USA
- Founded: 2017
- Team size: 51–200 employees
Contact Information
- Website: www.neowork.com
- Facebook: www.facebook.com/neoworkteam
- LinkedIn: www.linkedin.com/company/neoworkteam
- Instagram: www.instagram.com/neoworkteam
12. net-devs
net-devs supplies senior-led engineering teams for business applications, cloud platforms and existing software systems. Its capabilities include TypeScript development, backend services, automated testing and platform engineering. The Warsaw team works across .NET, Java, Node.js, Python and Go, with cloud infrastructure on Azure, AWS and Google Cloud.
For a React Native product, those capabilities are relevant to the APIs, authentication, integrations and deployment infrastructure behind the mobile application. Its project work includes unifying authentication and shared APIs for a streaming platform. Engagements start with requirements and architecture, then continue through implementation, QA and production changes. A senior engineer remains accountable for technical decisions, with AI-assisted work subject to human review.
Key Facts
- Best for: Mobile product teams needing backend, integration and cloud engineering
- Core services: Dedicated engineering teams, API integration, testing and platform engineering
- Technologies: TypeScript, .NET, Java, Node.js, Python, Go, Azure, AWS and Google Cloud
- Headquarters: Warsaw, Poland
Contact Information
- Website: net-devs.com
- Email: moc.sved-ten@tcatnoc
- LinkedIn: www.linkedin.com/company/net-devs
- Address: Obrzeżna 1D, 02-691 Warszawa, Poland
13. Stormotion
Stormotion provides IT staff augmentation ranging from a single developer to a complete development team. React Native sits alongside its work in connected devices, Bluetooth Low Energy, health technology, fitness, and electric mobility. The company also offers a hybrid model that combines internal engineers with external specialists.
Individual developers join the client's existing team and work with its product owner or project manager. Larger engagements bring together a dedicated team around a product. Stormotion's connected-device experience gives its mobile practice a specific context: applications often need to communicate with hardware and handle more than a conventional user interface. Teams building fitness equipment apps, health products, or mobility software have that domain experience to draw on.
Key Facts
- Best for: Connected-device, health, fitness, and mobility applications
- Core services: Staff augmentation, React Native development, dedicated teams, QA
- Specialization: IoT and Bluetooth Low Energy integrations
- Engagement model: Individual developers, dedicated teams, hybrid team extension
Contact Information
- Website: stormotion.io
- Email: oi.noitomrots@olleh
- Facebook: www.facebook.com/stormotion
- LinkedIn: www.linkedin.com/company/stormotion
- Instagram: www.instagram.com/stormotion_team
14. SoftPro
SoftPro develops custom software, web applications and cloud systems from Warsaw. Its engineers work with React, JavaScript, Node.js and the Microsoft stack, including .NET, ASP.NET Core and Azure. The company handles business portals, internal tools, legacy modernization and ongoing application maintenance.
In a React Native project, SoftPro's full-stack expertise is relevant to the backend and business systems the mobile app connects to. Its software development process covers planning, implementation, testing, deployment and continued support. Work is organized into smaller stages with regular check-ins and demonstrations, so changing requirements can be addressed during development. This gives product teams engineering support for the wider application environment, including integrations and cloud changes that affect the mobile experience.
Key Facts
- Best for: Mobile products connected to custom business software
- Core services: Custom development, backend engineering, cloud migration and maintenance
- Technologies: React, JavaScript, Node.js, .NET, ASP.NET Core, Azure and AWS
- Headquarters: Warsaw, Poland
Contact Information
- Website: soft-pro.pl
- Address: 13 Erasmus Ciołka Street, Office 401, Warsaw, Poland
15. BairesDev
BairesDev supplies React Native engineers through staff augmentation, dedicated teams, and broader software development engagements. Its nearshore teams work during US business hours and join clients' stand-ups, sprint reviews, and incident calls. Engineers adopt the client's development stack, review practices, and release policies.
Mobile work includes native integrations and migration from older cross-platform or mixed native applications. BairesDev coordinates with backend and QA teams, defining API contracts and aligning test environments before changes reach production. Its migration approach uses incremental releases, feature flags, and automated testing. For organizations with established engineering processes, the appeal is adding mobile capacity while maintaining the same coordination between application, backend, and release teams.
Key Facts
- Best for: US product teams seeking nearshore React Native engineers
- Core services: Staff augmentation, dedicated teams, mobile development, migrations
- Specialization: Native integrations, API coordination, automated testing
- Collaboration: US working-hour overlap and participation in client workflows
- Headquarters: San Francisco, CA, USA
- Founded: 2009
- Team size: 1,001–5,000 employees
Contact Information
- Website: www.bairesdev.com
- Facebook: www.facebook.com/bairesdev
- Twitter: x.com/bairesdev
- LinkedIn: www.linkedin.com/company/bairesdev
- Instagram: www.instagram.com/bairesdev
- Phone: +1 (408) 478-2739
16. 21century.tech
21century.tech brings senior engineering capacity to defined software projects, including new features, legacy refactoring and third-party integrations. Its engineers make architecture and business logic decisions, review code and handle deployment. AI assists with code generation, tests and documentation, while people remain responsible for the finished work.
Each engagement starts with agreement on scope, budget and timeline. Delivery includes tests, documentation and continuous integration and delivery pipelines, with deployment to the client's infrastructure or the studio's environment. For a React Native team, this model is relevant when a specific feature or integration needs additional engineering attention. The scope gives the outside team a defined piece of work, while demonstrations keep the client involved as the implementation progresses.
Key Facts
- Best for: Product teams adding engineering capacity for defined features or integrations
- Core services: Software development, refactoring, integrations and deployment
- Engagement model: Senior engineering with human-reviewed AI-assisted development
- Headquarters: Miami, Florida; remote-first
Contact Information
- Website: 21century.tech
- Email: hcet.yrutnec12@tcatnoc
17. Innowise
Innowise offers dedicated React Native developers and staff augmentation for existing software teams. Its mobile engineers work with TypeScript, Firebase, GraphQL, state management libraries, and native modules. Individual profiles cover different kinds of work, including payment integrations, connected hardware, maps, and real-time application features.
Candidate evaluation includes a practical React Native task based on common project situations, such as custom components, API integration, and platform-specific changes. Testing expertise covers tools such as Jest, Detox, and Appium. The staffing model supports adding or replacing developers as project needs change. That breadth is useful for products whose mobile roadmap spans several technical areas and needs specialists matched to particular features.
Key Facts
- Best for: Mobile teams needing developers matched to specific features
- Core services: React Native developer hiring, staff augmentation, mobile engineering
- Technologies: TypeScript, Firebase, GraphQL, native modules
- Candidate assessment: Practical tasks based on React Native project scenarios
- Headquarters: Warsaw, Poland
- Founded: 2007
- Team size: 1,001–5,000 employees
Contact Information
- Website: innowise.com
- Email: moc.esiwonni@tcatnoc
- Address: 50 Franklin St, Office 203, Boston, MA 02110
- Phone: +1 (917) 267 7727
18. Gilzor
Gilzor develops mobile applications with React Native, Swift and Kotlin, and extends teams working on products already in production. Its services include new feature development, bug fixes and technical troubleshooting. The team also works on backend systems with TypeScript, Node.js and Python, giving mobile projects support across the application and its connected services.
Existing applications are a significant part of its work. Gilzor reviews architecture, performance and code quality when an inherited product has become difficult to maintain. Its mobile audit produces prioritized recommendations, while development support carries improvements into the codebase. For a business seeking React Native staff augmentation, that combination is useful when extra capacity is needed for both releases and the technical problems slowing them down.
Key Facts
- Best for: Existing mobile products needing team extension and technical improvements
- Core services: Mobile development, team extension, application audits and ongoing support
- Technologies: React Native, Swift, Kotlin, TypeScript, Node.js and Python
- Office locations: Warsaw, Poland, and Limassol, Cyprus
- Headquarters: Warsaw, Poland
Contact Information
- Website: www.gilzor.com
- Email: moc.rozlig@stcatnoc
- LinkedIn: www.linkedin.com/company/gilzor-softwaredevelopment
- Address: Office 58, Adama Mickiewicza 37, 01-625 Warsaw, Poland
19. Cheesecake Labs
Cheesecake Labs brings mobile and web engineering talent into client teams through staff augmentation. React Native is part of its technical practice alongside Flutter and other application development tools. The company works from an existing pool of vetted specialists, including professionals who also deliver its managed development projects.
Its hiring process evaluates technical ability and communication skills, with engineering leaders involved in assessing candidates. Staffing is matched to the client's technology stack and project requirements. Cheesecake Labs also offers product design and broader software engineering, giving mobile teams access to related expertise when an engagement grows beyond a single role. Its nearshore approach is relevant to businesses seeking regular collaboration with Latin American engineering talent.
Key Facts
- Best for: Mobile product teams seeking nearshore engineering support
- Core services: Staff augmentation, mobile and web development, product design
- Mobile technologies: React Native and Flutter
- Candidate screening: Technical and communication assessment with engineering input
- Headquarters: San Francisco, CA, USA
- Founded: 2013
- Team size: 51–200 employees
Contact Information
- Website: cheesecakelabs.com
- Email: moc.sbalekaceseehc@ofni
- Facebook: www.facebook.com/cheesecakelabs
- Twitter: x.com/cheesecakelabs
- LinkedIn: www.linkedin.com/company/cheesecake-labs
- Instagram: www.instagram.com/cheesecakelabs
- Address: 391 Sutter St, Ste 704, San Francisco, USA
- Phone: +1 415 286 3266
20. Mobian
Mobian places senior engineers inside client teams, where they learn the existing systems, tools and development process before joining the work. Its augmentation model supports changes in team size as the roadmap evolves. Engineers also have access to Mobian's tech lead and wider team when a task needs additional technical input.
The company's mobile work includes healthcare platforms, secure messaging, delivery applications and software connected to medical devices. Native iOS and Android engineering, API work and QA are relevant supporting roles in a React Native product. Mobian's experience with Bluetooth integrations, offline workflows and store releases gives those roles a practical focus. Clients receive the proposed team composition and engineers' CVs before onboarding, with continued development and support available after launch.
Key Facts
- Best for: Mobile products involving healthcare, logistics or connected devices
- Core services: Team augmentation, mobile development, API integration and QA
- Technologies: Swift, Kotlin, Flutter, Python and Bluetooth Low Energy
- Headquarters: Tallinn, Estonia
Contact Information
- Website: mobian.studio
- Email: oiduts.naibom@ofni
- LinkedIn: www.linkedin.com/company/mobian-studio
- Address: Masina tn 22, 10113 Tallinn, Estonia
21. Simform
Simform combines mobile development with product engineering and embedded technical talent. Its cross-platform mobile work includes React Native, while its staff augmentation service adds engineers with architecture, DevOps, and QA expertise to internal teams. Other engagement models cover managed product teams and ongoing product maintenance.
The connection between mobile delivery and the surrounding platform is a useful part of its scope. Simform works on cloud infrastructure, integrations, testing, and application modernization, so an engagement can address the systems supporting the mobile application as well as the application itself. This fits businesses whose release plans involve coordinated changes across frontend, backend, and delivery infrastructure.
Key Facts
- Best for: Mobile products with broader cloud and platform requirements
- Core services: Staff augmentation, product engineering, mobile development, QA
- Specialization: React Native, cloud engineering, DevOps, integrations
- Engagement model: Embedded engineers, managed teams, product maintenance
- Headquarters: Orlando, FL, USA
- Founded: 2010
- Team size: 501–1,000 employees
Contact Information
- Website: www.simform.com
- Facebook: www.facebook.com/simform
- Twitter: x.com/simform
- LinkedIn: www.linkedin.com/company/simform
22. ScienceSoft
ScienceSoft offers React Native team augmentation and dedicated mobile development teams. Its developers handle application architecture, native modules, framework upgrades, code reviews, unit testing, and integration troubleshooting. Clients specify the number and experience level of engineers they need, review CVs, and interview shortlisted candidates.
Technical assessment considers architecture, state management, performance, and the different requirements of iOS and Android. During an engagement, ScienceSoft uses documentation, reporting, and agreed performance measures to make the work visible. It also supports collaboration setup and staffing changes. The combination is relevant to businesses that want a defined hiring process and structured oversight for ongoing mobile development.
Key Facts
- Best for: Organizations wanting a structured mobile staffing process
- Core services: React Native team augmentation, dedicated teams, upgrades, maintenance
- Specialization: Native modules, architecture, testing, integrations
- Selection process: CV review, client interviews, React Native technical assessment
- Headquarters: McKinney, TX, USA
- Founded: 1989
- Team size: 501–1,000 employees
Contact Information
- Website: www.scnsoft.com
- Email: moc.tfosncs@tcatnoc
- Facebook: www.facebook.com/sciencesoft.solutions
- Twitter: x.com/ScienceSoft
- LinkedIn: www.linkedin.com/company/sciencesoft
- Address: 5900 S. Lake Forest Drive, Suite 300, McKinney, Dallas area, TX-75070
- Phone: +1 214 306 6837
23. Bacancy Technology
Bacancy provides React Native developers for cross-platform application development and ongoing mobile work. Its services cover consulting, MVP development, interface design, custom applications, and code audits. Developers work with JavaScript and TypeScript, with related backend skills available across technologies such as Node.js, Python, and .NET.
The mobile practice also addresses state management and performance, including techniques such as memoization and lazy loading. Businesses can engage developers around a specific application or extend development capacity across a broader roadmap. Bacancy's combination of implementation and consulting is useful when a team needs help deciding how a mobile product should be built as well as engineers to develop it.
Key Facts
- Best for: Teams adding React Native implementation and consulting skills
- Core services: Developer hiring, mobile development, MVPs, consulting, code audits
- Specialization: State management and application performance
- Technologies: React Native, JavaScript, TypeScript, Node.js
- Headquarters: Ahmedabad, India
- Founded: 2011
- Team size: 1,001–5,000 employees
Contact Information
- Website: www.bacancytechnology.com
- Facebook: www.facebook.com/BacancyTechnologyLimited
- Twitter: x.com/bacancyTech
- LinkedIn: www.linkedin.com/company/bacancy-technology
- Instagram: www.instagram.com/bacancytechnology
24. Leanware
Leanware provides nearshore staff augmentation for businesses adding React Native developers to an existing team. Its mobile services cover custom applications, UI/UX work, migrations, and continued development. The company's Latin American delivery model emphasizes overlapping working hours with North American teams.
The hiring process starts with the client's technical requirements, followed by candidate selection, interviews, and onboarding. Developers integrate into the existing team's workflow, with mobile expertise extending to native modules and cross-platform behavior. Leanware also offers managed teams and project-based development, giving businesses different ways to organize delivery as their needs change. For teams that expect frequent collaboration with external developers, the shared working day is a practical consideration.
Key Facts
- Best for: North American teams seeking nearshore mobile developers
- Core services: Staff augmentation, React Native development, migrations, UI/UX
- Engagement model: Latin American engineering with overlapping working hours
- Engagement options: Staff augmentation, managed teams, project development
- Headquarters: Bogotá, Colombia
- Founded: 2020
Contact Information
- Website: leanware.co
- Email: oc.erawnael@ofni
- LinkedIn: www.linkedin.com/company/leanware-io
Comparison Table
| Company | Best for | Headquarters | Founded | Team size |
| Itexus | Fintech teams expanding mobile development capacity | Dover, DE, USA | 2013 | 150+ engineers |
| Margelo | Performance-critical React Native apps and native integrations | Vienna, Austria | 2021 | 11–50 employees |
| Theodo | Enterprises needing React Native engineers within a larger consultancy | Paris, France | 2009 | 501–1,000 employees |
| Callstack | Production apps needing specialist React Native engineering | Wrocław, Poland | 2016 | 51–200 employees |
| OSKI Solutions | React Native products requiring native modules and release engineering | Tallinn, Estonia | — | 51–200 employees |
| Software Mansion | Teams facing complex framework or native engineering work | Kraków, Poland | 2012 | 201–500 employees |
| Infinite Red | Teams seeking senior React Native consultants and training | — | — | — |
| A-listware | Businesses extending mobile teams with developers and QA specialists | London, UK | — | — |
| Netguru | Product teams adding mobile engineering, design, and QA capacity | Poznań, Poland | 2008 | 501–1,000 employees |
| Pagepro | React-based product teams adding a mobile application | Białystok, Poland | — | — |
| NeoWork | Businesses building an ongoing distributed mobile team | Miami, FL, USA | 2017 | 51–200 employees |
| net-devs | Mobile product teams needing backend, integration and cloud engineering | Warsaw, Poland | — | — |
| Stormotion | Connected-device, health, fitness, and mobility applications | — | — | — |
| SoftPro | Mobile products connected to custom business software | Warsaw, Poland | — | — |
| BairesDev | US product teams seeking nearshore React Native engineers | San Francisco, CA, USA | 2009 | 1,001–5,000 employees |
| 21century.tech | Product teams adding engineering capacity for defined features or integrations | Miami, Florida; remote-first | — | — |
| Innowise | Mobile teams needing developers matched to specific features | Warsaw, Poland | 2007 | 1,001–5,000 employees |
| Gilzor | Existing mobile products needing team extension and technical improvements | Warsaw, Poland | — | — |
| Cheesecake Labs | Mobile product teams seeking nearshore engineering support | San Francisco, CA, USA | 2013 | 51–200 employees |
| Mobian | Mobile products involving healthcare, logistics or connected devices | Tallinn, Estonia | — | — |
| Simform | Mobile products with broader cloud and platform requirements | Orlando, FL, USA | 2010 | 501–1,000 employees |
| ScienceSoft | Organizations wanting a structured mobile staffing process | McKinney, TX, USA | 1989 | 501–1,000 employees |
| Bacancy Technology | Teams adding React Native implementation and consulting skills | Ahmedabad, India | 2011 | 1,001–5,000 employees |
| Leanware | North American teams seeking nearshore mobile developers | Bogotá, Colombia | 2020 | — |
How to Choose a React Native Staff Augmentation Company
With staff augmentation, you keep product ownership and the vendor supplies developers who must fit into your codebase, tools and release rhythm. The right company gives you engineers who are productive within weeks, not months. Focus your evaluation on the people you will actually get and how replacements and overlap are handled.
Native module experience. Most React Native apps eventually need native code for payments, Bluetooth, camera, push notifications or background tasks. Ask candidates to explain a native module they wrote or fixed in Swift, Kotlin or Java, and how they debugged it. Developers who only know the JavaScript layer often stall when a library breaks after an iOS or Android update.
Upgrades and the new architecture. Ask about experience upgrading React Native versions, migrating to the new architecture with Fabric and TurboModules, and moving between Expo and bare workflows. Good candidates can describe the dependency conflicts and build failures they hit and how they resolved them. This experience matters most if your app is several versions behind.
Testing and release workflow. Check familiarity with unit testing in Jest, end-to-end tools such as Detox or Maestro, crash reporting, and store submission for both App Store and Google Play. Ask how they handle over-the-air updates, signing certificates and staged rollouts. A developer who has never owned a release will need close supervision during your busiest periods.
You interview the actual engineers. Insist on interviewing the specific developers who will join, including a practical session on your type of code, such as reviewing a pull request or debugging a performance issue. Confirm in the contract that the vendor cannot swap people without your agreement. Be cautious of companies that present senior profiles and then assign different engineers after signing.
Working-hour overlap and communication. Agree on a minimum number of overlapping hours with your team, typically enough for standups, code review and pairing. Assess spoken and written English during interviews, since most coordination happens in pull request comments and chat. Ask how the vendor handles holidays and sick leave so release dates do not depend on one person.
Replacement and offboarding terms. Read the contract for notice periods, the replacement guarantee if a developer is not a fit, and how quickly a replacement is provided. Check that intellectual property belongs to you and that access to repositories and accounts is revoked cleanly at the end. Short notice periods and a trial period reduce the cost of a wrong hire.
Conclusion
A useful React Native hiring brief describes the application's current state, the work ahead, and the skills missing from the team. Candidate interviews should include practical discussion of native integrations, debugging, testing, and maintaining an existing codebase. Before onboarding, agree on working-hour overlap, access to development tools, code ownership, and responsibility for releases. Documentation and knowledge transfer deserve the same attention as the first sprint. The value of staff augmentation becomes clearer when added engineers complete useful work and leave the internal team able to maintain it.
Frequently Asked Questions
How much does a React Native augmented developer cost?
Rates depend mainly on region and seniority. Hourly rates vary by region: providers in Eastern Europe, Latin America and Asia are usually less expensive than US-based contractors. Senior engineers with native iOS and Android skills cost more than JavaScript-focused developers. Ask whether the rate includes management, replacement guarantees and equipment.
How quickly can an augmented React Native developer start?
Many vendors can present candidates within one to two weeks and have a developer start within two to four weeks after selection. Speed depends on how specific your requirements are and whether the vendor has engineers on its bench. Expect another few weeks before the developer is fully productive in your codebase, depending on onboarding quality and documentation.
Is staff augmentation better than outsourcing the whole app?
Staff augmentation is better when you already have product management, technical leadership and a codebase, and only lack capacity or specific skills. Outsourcing the full project suits companies without an internal team or technical lead. With augmentation you manage the developers day to day, so you keep control of priorities and architecture but also carry the coordination work.
What skills should a senior React Native developer have?
A senior React Native developer should know TypeScript, state management, navigation, performance profiling and offline data handling, plus enough Swift or Kotlin to write and debug native modules. They should be able to manage builds and store releases on both platforms, set up automated tests, and upgrade React Native versions without breaking the app. Code review and mentoring skills matter too.
How do I onboard augmented React Native developers effectively?
Prepare access to repositories, build tools, test devices or simulators, design files and issue tracking before the start date. Provide a short architecture overview and a working local setup guide, then assign a small, real task in the first week with a named internal reviewer. Regular code reviews and a clear definition of done help new developers match your standards quickly.