Miami businesses can choose from local software studios, global engineering companies with South Florida offices, and fintech-focused teams that serve the city remotely. The companies below cover digital banking, payments, lending, wealth technology, blockchain, data engineering, compliance-focused development, and financial platform modernization. Buyers can compare them by project type, technical scope, delivery model, and local presence.
1. Itexus
Itexus concentrates on software for fintech companies, banks, lenders, insurers, and investment businesses. Its work covers digital banking applications, mobile wallets, lending platforms, trading systems, financial analytics, process automation, and integrations with payment and financial data services. The company can take a product from discovery and UI/UX design through engineering, testing, cloud deployment, and ongoing support.
It also handles audits and rescue work for products that have architecture, performance, security, or delivery problems. Its US presence and distributed engineering model allow it to work with companies in Miami without limiting delivery to a local team.
Key Facts
- Best for: Custom fintech products and complex financial integrations
- Core services: Fintech software development, fintech consulting, custom development, UI/UX design, QA, cloud engineering, support
- Fintech areas: Digital banking, payments, lending, trading, insurance, wealth management
- Project types: New products, modernization, integrations, project audits and rescue
- US office: Dover, Delaware
Contact Information
- Website: itexus.com
- E-mail: 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. ZoolaTech
ZoolaTech operates from a Miami office and delivers software engineering for financial companies and other regulated or high-growth businesses. Its fintech capabilities cover lending, payments, data automation, software modernization, cloud systems, quality engineering, and long-term product support.
The company is a practical option for organizations that already have a working platform and need to modernize its architecture, extend functionality, or add engineering capacity. Managed delivery and team extension models give buyers a choice between assigning a defined outcome and embedding engineers within an existing product organization.
Key Facts
- Best for: Scaling and modernizing established financial platforms
- Core services: Software engineering, application services, legacy modernization, cloud, DevOps, QA
- Fintech areas: Lending, payments, financial data automation
- Engagement models: Managed delivery, offshore delivery centers, team extension
- Miami office: 1221 Brickell Ave, Suite 900, Miami, FL 33131
Contact Information
- Website: zoolatech.com
- Facebook: www.facebook.com/Zoolatech
- Twitter: x.com/Zoolatech\_com
- LinkedIn: www.linkedin.com/company/zoolatech
- Instagram: www.instagram.com/zoolatech
- Address: 1221 Brickell Ave, Suite 900, Miami, FL 33131, USA
3. KITRUM
KITRUM is an engineering company with a Miami office and experience supporting live fintech products. Its financial technology work includes wealth management software, KYC solutions, payment-related systems, product enhancement, and modernization of business-critical applications.
Rather than focusing only on greenfield MVPs, KITRUM also works with companies that need to stabilize, extend, or transfer an existing codebase. Services span AI-enabled engineering, legacy modernization, cloud and DevOps work, quality assurance, and dedicated development teams. This makes it a useful candidate for fintech operators managing an active product and a continuing release schedule.
Key Facts
- Best for: Fintech companies improving or scaling a live software product
- Core services: Product engineering, modernization, AI-enabled development, QA, DevOps
- Fintech areas: Wealth management, KYC, payments, financial platforms
- Certification: ISO 27001
- Miami office: 848 Brickell Ave, Suite 605, Miami, FL
Contact Information
- Website: kitrum.com
- Email: moc.murtik@olleh
- Facebook: www.facebook.com/wekitrum
- Twitter: x.com/KitRUM\_LLC
- LinkedIn: www.linkedin.com/company/kitrum
- Instagram: www.instagram.com/kitrum.team
- Phone: +1 888 825 8034
- Address: 848 Brickell Ave, Suite 605, Miami, FL, USA
4. Intellectsoft
Intellectsoft provides full-cycle financial software development for fintech companies and established financial institutions. Its services cover product strategy, architecture, web and mobile engineering, cloud systems, blockchain, AI, quality assurance, and application modernization. Relevant project types include transaction platforms, digital banking tools, payment workflows, and software that uses open banking connections.
The company opened a Miami office as part of its US operations and has experience with both enterprise transformation and new digital products. Its delivery model is better aligned with multi-stage programs that require discovery, design, implementation, and support than with a narrowly defined coding assignment.
Key Facts
- Best for: Enterprise financial software and digital transformation programs
- Core services: Product strategy, custom software, mobile development, cloud, AI, blockchain, QA
- Fintech areas: Banking, payments, open banking, transaction management
Contact Information
- Website: www.intellectsoft.net
- E-mail: ten.tfostcelletni@ofni
- Facebook: www.facebook.com/Intellectsoft
- Twitter: x.com/Intellectsoft
- LinkedIn: www.linkedin.com/company/intellectsoft
- Phone: +1 (650) 233-6196
- Address: 500 Fashion Avenue, Floor 8A, New York, NY 10018
5. Devox Software
Devox Software has a Miami office and a dedicated fintech engineering practice. It develops digital banking products, lending systems, accounting software, payment applications, trading tools, and other finance-focused web and mobile platforms. The company also handles business analysis, UI/UX design, QA, DevOps, cloud work, and ongoing maintenance.
Its Miami coverage is useful for teams that want local market access combined with a distributed delivery operation. Devox can support a new application from planning through release or provide individual specialists and dedicated teams for an existing roadmap. The range of finance-specific services makes it suitable for both customer-facing products and internal operational systems.
Key Facts
- Best for: Full-cycle fintech application development with Miami coverage
- Core services: Discovery, software development, UI/UX, QA, DevOps, maintenance
- Fintech areas: Digital banking, lending, accounting, payments, trading
- Location: 14 NE 1st Ave, Miami, FL 33132
Contact Information
- Website: devoxsoftware.com
- E-mail: moc.erawtfosxoved@ofni
- Facebook: www.facebook.com/devoxsoftware
- LinkedIn: www.linkedin.com/company/devox-software
- Address: 14 NE 1st Avenue, 33132, Miami, FL, USA
6. SDSol Technologies
SDSol Technologies is a Miami software studio that develops custom applications for banking, lending, insurance, and other business sectors. Its work includes mobile and web software, SaaS products, API development, cloud infrastructure, cybersecurity, modernization, and managed application services.
The company can help local financial businesses build customer apps or improve internal systems that need integrations, automation, and secure data handling. SDSol also supports early product definition through consulting and UX work, then continues through engineering, deployment, and maintenance. Its Brickell office provides a direct local option for discovery meetings.
Key Facts
- Best for: Miami businesses seeking a local full-service development studio
- Core services: Custom software, mobile apps, SaaS development, APIs, cloud, cybersecurity
- Fintech areas: Banking, lending, insurance, financial applications
- Location: Brickell, Miami
Contact Information
- Website: sdsol.com
- Email: moc.losds@ofni
- Facebook: www.facebook.com/sdsoltech
- LinkedIn: www.linkedin.com/company/sdsol-technologies
- Instagram: www.instagram.com/sdsoltechnologies
- Phone: +1 305 274 2147
- Address: 1200 Brickell Ave, Suite 1260, Miami, FL 33131, USA
7. Alpha Bravo Development
Alpha Bravo Development is a Miami-based app and software agency with a specific banking software service. It builds custom web and mobile products, customer and employee portals, payment-related features, dashboards, and API connections. The team also works with AI and machine learning when those capabilities fit the business case.
Its service mix is appropriate for startups and established businesses that want a locally based team for a defined application build. Banking and fintech buyers can use the company for front-end customer experiences as well as the custom back-end workflows and integrations that support them.
Key Facts
- Best for: Custom banking applications and focused product builds
- Core services: Web development, mobile apps, UI/UX, APIs, AI and machine learning
- Fintech areas: Banking software, payment features, financial dashboards
- Location: Miami, Florida
Contact Information
- Website: www.alphabravodevelopment.com
- E-mail: moc.tnempolevedovarbahpla@ofni
- Facebook: www.facebook.com/alphabravodev
- Twitter: x.com/alphabravodev
- Instagram: www.instagram.com/alphabravodevelopment
- Address: 111 Northeast 1st Street, Floor 8, Miami, FL 33132
- Phone: (305) 614-9507
8. GP Solutions
GP Solutions maintains a Miami Beach office and develops software for banking and finance organizations. Its capabilities include customer-facing banking applications, secure financial workflows, systems integration, data management, cloud development, testing, and support. The company also works across web, mobile, and enterprise software environments.
Financial institutions can consider GP Solutions when a project involves modernizing existing processes or creating a custom product that must connect with established business systems. Its delivery structure combines US client access with engineering centers in Europe, which may suit companies looking for a long-term outsourced team.
Key Facts
- Best for: Banking software and long-term outsourced engineering
- Core services: Custom software, integrations, cloud development, QA, support
- Fintech areas: Digital banking, customer experience, secure financial workflows
- Miami office: Miami Beach, Florida
Contact Information
- Website: gpsolutions.com
- Facebook: www.facebook.com/GPsolutions.GmbH
- LinkedIn: www.linkedin.com/company/gp-solutions-gmbh
- Instagram: www.instagram.com/gp.solutions
- Phone: +48 22 266-21-33
- Address: 407 Lincoln Road, Suite 12D, Miami, FL 33139
9. N-iX
N-iX has a South Florida office and delivers software engineering for fintech companies, neobanks, traditional banks, investment platforms, and consumer finance businesses. Its services include product engineering, cloud and data platforms, AI, cybersecurity, application modernization, DevSecOps, and managed delivery.
The company fits larger or technically complex programs that require access to a broad engineering organization. Financial clients can use N-iX for new platform development, modernization of legacy systems, analytics, infrastructure work, and team expansion. Its security and cloud capabilities are especially useful when the software must handle sensitive financial data at scale.
Key Facts
- Best for: Enterprise fintech engineering and modernization
- Core services: Software engineering, cloud, data, AI, cybersecurity, DevSecOps
- Fintech areas: Banking, neobanks, investment platforms, consumer finance
- Florida office: Plantation, Florida
Contact Information
- Website: www.n-ix.com
- E-mail: moc.xi-n@tcatnoc
- Facebook: www.facebook.com/N.iX.Company
- Twitter: x.com/N\_iX\_Global
- LinkedIn: www.linkedin.com/company/n-ix
- Phone: +1 727 341 5669
- Address: 4330 W Broward Blvd, Space P/Q, Plantation, FL 33317, USA
10. Teravision Technologies
Teravision Technologies is a Miami-headquartered nearshore software development company with engineering talent distributed across Latin America. It supports financial technology products through product engineering, cloud and DevOps work, data and AI services, quality assurance, design, and dedicated development teams.
The company works with fintech and SaaS businesses that need to accelerate an established roadmap or form a new product team. Similar time zones and a US-based commercial presence make its model practical for Miami companies that want nearshore delivery without large gaps in the working day.
Key Facts
- Best for: Nearshore fintech product teams in compatible US time zones
- Core services: Product engineering, staff augmentation, AI and data, cloud, DevOps, QA
- Engagement models: Dedicated teams, staff augmentation, product studio
- Location: Miami, Florida
Contact Information
- Website: www.teravisiontech.com
- Facebook: www.facebook.com/TeravisionTech
- Twitter: x.com/teravisiontech
- LinkedIn: www.linkedin.com/company/teravision-technologies
- Instagram: www.instagram.com/teravisiontech
- Phone: +1 888 989 8324
- Address: 6450 SW 88th St, Miami, FL 33156, USA
11. Mercury Development
Mercury Development is a Miami-area software engineering company that builds web, mobile, desktop, cloud, and AI-enabled products. Its work spans fintech and other technology-intensive sectors, with services covering discovery, product design, full-cycle development, quality assurance, transformation, and staff augmentation.
For financial technology projects, Mercury is most applicable when product experience and multi-platform engineering are central requirements. It can build customer-facing mobile applications, web platforms, data-driven features, and supporting cloud systems. The company also works with existing businesses that need to update an established digital product rather than replace it completely.
Key Facts
- Best for: Multi-platform financial products and polished customer applications
- Core services: Mobile, web, cloud, desktop, AI and machine learning, QA, design
- Project types: New products, application transformation, staff augmentation
- Location: Miami area, Florida
Contact Information
- Website: mercurydevelopment.com
- Email: moc.tnempolevedyrucrem@selas
- Facebook: www.facebook.com/mercdev
- Twitter: x.com/mercdev
- LinkedIn: www.linkedin.com/company/mercury-development-llc
- Instagram: www.instagram.com/mercdev
- Phone: +1 305 767 2434
Conclusion
The right Miami fintech development partner depends on the product and the delivery gap that needs to be filled. Start by separating greenfield development from modernization, then shortlist companies with direct experience in the required area, such as payments, lending, banking, wealth management, or blockchain. Before signing a contract, compare their proposed architecture, security responsibilities, integration plan, team composition, release process, and post-launch support.