Colorado businesses can choose from local development teams, global consultancies with offices in the state, and specialist fintech engineers serving the market remotely. The companies below cover digital banking, payments, lending, trading, financial data, application modernization, compliance, and AI-enabled finance products.
1. Itexus
Itexus builds custom software for banks, credit unions, investment managers, insurers, brokers, and fintech companies. It has worked on digital banking, mobile wallets, payments, lending, brokerage, wealth management, and financial analytics. The team covers discovery, architecture, UX/UI, engineering, integrations, testing, deployment, modernization, and long-term support.
Colorado clients work with a US-based team backed by distributed engineers. Itexus is a good choice when a project handles sensitive financial data, connects many outside providers, processes heavy transaction volumes, or must run in a regulated environment.
Key Facts
- Best for: Complex financial products and regulated fintech platforms
- Core services: Fintech software development, consulting, modernization, QA, cloud engineering
- Specialization: Banking, trading, wealth management, payments, lending, insurance
- Location: US office in Dover, Delaware, serving clients across the United States
- Notable strength: Broad coverage of both customer-facing and operational financial systems
Contact Information
- Website: itexus.com
- Email: moc.suxeti@ofni
- Address: 8, The Green, STE road, Dover, DE 19901, United States
- LinkedIn: www.linkedin.com/company/itexus
- Facebook: www.facebook.com/itexus
- Twitter: x.com/ItexusSoft
- Instagram: www.instagram.com/itexus.soft
2. Sombra
Sombra pairs custom software engineering with financial services experience and has an office in downtown Denver. Its teams build web and mobile products, modernize applications, connect enterprise systems, improve data infrastructure, and supply managed engineering capacity.
Financial firms hire Sombra for digital banking screens, payment flows, lending software, internal tools, analytics, and cloud modernization. It also works with AI, data engineering, Salesforce, DevOps, and QA. That helps when the fintech app is only one piece of a larger tech setup.
Key Facts
- Best for: Fintech products requiring ongoing engineering capacity
- Core services: Custom software, application modernization, AI, data engineering, QA, DevOps
- Specialization: Financial services and banking technology
- Location: Denver, Colorado 80202
- Notable strength: Local access combined with international delivery teams
Contact Information
- Website: sombrainc.com
- E-mail: moc.cniarbmos@tcennoc
- Facebook: www.facebook.com/sombra.software
- LinkedIn: www.linkedin.com/company/sombra-inc
- Instagram: www.instagram.com/sombra_software
- Address: 1550 Wewatta St, Denver, CO 80202, USA
- Phone: +380972750055
3. JPLoft
JPLoft builds fintech apps for banking, investing, insurance, payments, lending, and personal finance. It handles product planning, UI/UX design, mobile and web engineering, backend work, testing, deployment, and maintenance.
JPLoft fits businesses building an app their customers will use. Typical features include digital wallets, secure payments, account dashboards, stock trading, expense tracking, notifications, and API integrations. It runs a Denver office plus international developers, so clients get local contact and capacity for larger builds.
Key Facts
- Best for: Mobile-first fintech products and startup applications
- Core services: Mobile apps, web development, SaaS, AI, cloud, software maintenance
- Specialization: Wallets, banking apps, insurance tools, trading and expense management
- Location: Denver, Colorado 80206
- Notable strength: Extensive mobile product development capabilities
Contact Information
- Website: www.jploft.com
- E-mail: moc.tfolpj@rh
- Facebook: www.facebook.com/jploftsolutions
- Twitter: x.com/jploftsolutions
- LinkedIn: www.linkedin.com/company/jploft-solutions
- Instagram: www.instagram.com/jploftofficial
- Address: 700 N Colorado Blvd, Ste #200 Denver, CO 80206
- Phone: +1 (303) 335-0405
4. Slalom Build
Slalom works with banks, payment providers, insurers, wealth managers, and other financial firms. Its teams mix business consulting with product engineering, cloud work, data platforms, AI, and customer experience design.
Slalom suits large programs where new software goes hand in hand with changes to operations, data governance, security, and platform strategy. Its financial work includes modern banking experiences, advisor platforms, insurance products, automation, and cloud analytics. A dedicated Denver office gives Colorado firms local consultants backed by a larger delivery team.
Key Facts
- Best for: Business and technology transformation in financial services
- Core services: Product engineering, cloud, data, AI, strategy, experience design
- Specialization: Banking, payments, insurance, wealth and asset management
- Location: Denver, Colorado 80202
- Notable strength: Integration of software delivery with organizational transformation
Contact Information
- Website: www.slalombuild.com
- E-mail: moc.molals@stneilc
- Twitter: x.com/Slalom
- LinkedIn: www.linkedin.com/company/slalom-consulting
- Instagram: www.instagram.com/slalomconsulting
- Address: 1899 Wynkoop Street, 8th Floor, Denver, CO 80202, USA
5. Inoxoft
Inoxoft builds custom fintech and banking software for companies in Colorado and across the US. It works on core banking tools, digital wallets, loan management, payment gateways, and investment platforms. It also builds personal finance apps, insurance systems, and regulatory technology.
Its services include product discovery, web and mobile development, AI, data analytics, integration, UX/UI, and QA. Startups use it to launch a first financial product, and established firms use it to extend a platform. Inoxoft works during US business hours and has a dedicated Denver service page.
Key Facts
- Best for: Custom banking platforms and fintech product development
- Core services: Product discovery, mobile and web development, AI, integrations, QA
- Specialization: Banking, payments, lending, wealth management, insurance, RegTech
- Location: Provides software development services in Denver and across the United States
- Notable strength: Full-cycle development for both operational and customer-facing software
Contact Information
- Website: inoxoft.com
- E-mail: moc.tfoxoni@tcatnoc
- Facebook: www.facebook.com/inoxoft
- Twitter: x.com/InoXoft_Inc
- LinkedIn: www.linkedin.com/company/inoxoft
- Instagram: www.instagram.com/inoxoft_team
- Address: 1601 Market Street, 19th Floor, Philadelphia, PA 19103
- Phone: +12673102646
6. Keyhole Software
Keyhole Software builds custom financial software with senior, US-based consultants. It works with banks, credit unions, payment firms, investment firms, insurers, and fintech startups on both new products and older enterprise systems.
Its projects cover digital banking, loan origination, payment processing, fraud detection, cloud migration, API integration, and legacy modernization. The team uses Java, JavaScript, .NET, cloud platforms, and microservices. With a Denver presence, Keyhole suits Colorado firms that want domestic engineers working closely with their own tech teams.
Key Facts
- Best for: Financial institutions requiring senior US-based engineers
- Core services: Custom development, modernization, APIs, cloud-native systems, architecture
- Specialization: Banking, payments, lending, insurance, and wealth management
- Location: Denver service presence, with US-based consultants
- Notable strength: Experience with financial security and compliance requirements
Contact Information
- Website: keyholesoftware.com
- E-mail: moc.erawtfoselohyek@ofni
- Facebook: www.facebook.com/keyholesoftware
- Twitter: x.com/keyholesoftware
- LinkedIn: www.linkedin.com/company/keyhole-software
- Instagram: www.instagram.com/keyholesoftware
- Address: 11205 W 79th Street, Lenexa, KS 66214, USA
- Phone: (877) 521-7769
7. Matellio
Matellio builds fintech and digital banking products within its broader software engineering practice. Its teams make mobile banking apps, payment platforms, financial dashboards, automated workflows, and AI-supported financial systems.
It also covers product innovation, cloud architecture, modernization, integration, and ongoing platform support. That helps firms grow a basic app into a connected product with backend services, analytics, and automation. Matellio has a Denver office and works with startups, mid-market businesses, and large enterprises.
Key Facts
- Best for: Fintech products that combine AI, cloud, and workflow automation
- Core services: Product engineering, AI, cloud, integrations, modernization, mobile development
- Specialization: Fintech and digital banking
- Location: Denver, Colorado
- Notable strength: Product development tied to operational modernization
Contact Information
- Website: www.matellio.com
- Facebook: www.facebook.com/matellio
- Twitter: x.com/Matellio_Inc
- LinkedIn: www.linkedin.com/company/matellio
- Instagram: www.instagram.com/matellio.inc
- Address: 2301 Blake St #247, Denver, CO 80205, USA
- Phone: +1 408 560 1910
8. Gorilla Logic
Gorilla Logic builds and modernizes digital products for enterprises. Its services include product engineering, platform engineering, DevOps, quality engineering, and staff augmentation. The company is based in Broomfield, with Colorado leadership and nearshore teams in Latin America.
Fintech companies use it to scale a platform, merge systems, speed up releases, or add experienced developers. Gorilla Logic fits mature tech businesses that already have product leadership and need steady engineering capacity.
Key Facts
- Best for: Scaling established fintech engineering organizations
- Core services: Product engineering, platform engineering, DevOps, SRE, QA, staff augmentation
- Specialization: Enterprise digital products and application modernization
- Notable strength: Colorado-based operations with nearshore engineering capacity
Contact Information
- Website: gorillalogic.com
- Facebook: www.facebook.com/gorillalogic
- Twitter: x.com/gorillalogic
- LinkedIn: www.linkedin.com/company/gorillalogic
- Instagram: www.instagram.com/gorilla_logic
9. Swovo
Swovo, formerly Flatirons Development, builds web apps, hybrid mobile apps, SaaS platforms, and enterprise software. Banking and finance are among its industries. Its services run from product strategy and user research to full-stack engineering, QA, data warehousing, and DevOps.
Swovo can help a fintech team define an MVP, redesign a financial interface, or build an app around complex business workflows. It serves Boulder, Denver, Colorado Springs, and the rest of the state. Its product-first process suits projects where usability and fast iteration matter as much as the backend.
Key Facts
- Best for: Design-led fintech products and SaaS platforms
- Core services: Product strategy, UX/UI, full-stack development, mobile apps, QA
- Specialization: Banking, finance, SaaS, and enterprise software
- Location: Serves Boulder, Denver, Colorado Springs, and clients across Colorado
- Notable strength: Product discovery and user research integrated with engineering
Contact Information
- Website: swovo.com
- E-mail: moc.ovows@ofni
- Twitter: x.com/swovohq
- LinkedIn: www.linkedin.com/company/swovohq
- Instagram: www.instagram.com/swovohq
10. Taction Software
Taction Software builds applications for Denver businesses, including fintech products as well as healthcare, retail, and enterprise systems. Its teams create web, mobile, cloud, and integration-based software with Microsoft and open-source technologies.
On a financial project, Taction can build customer apps, transaction workflows, backend APIs, cloud infrastructure, data exchange, and third-party integrations. It is a good fit when a fintech app must plug into a larger enterprise setup. It also suits projects that need a dedicated team working in US time zones.
Key Facts
- Best for: Integrated fintech web and mobile applications
- Core services: Custom software, mobile development, cloud, APIs, integrations
- Specialization: Fintech and enterprise application engineering
- Location: Provides application development services to Denver organizations
- Notable strength: Experience with integration-heavy business software
Contact Information
- Website: www.tactionsoft.com
- E-mail: moc.tfosnoitcat@ofni
- Facebook: www.facebook.com/tactionsoftware
- LinkedIn: www.linkedin.com/company/taction-software-llc
- Instagram: www.instagram.com/tactionsoftwarellc
- Address: 1016 W, Jackson Boulevard Chicago, IL 60607
- Phone: +13074590850
11. NGS Solution
NGS Solution serves Denver businesses with custom software, web and mobile apps, AI, data services, and enterprise integrations. Finance and fintech are among its named industries, with a focus on secure financial management, banking, and payment apps.
It builds native and cross-platform mobile apps, web systems, cloud solutions, and automation, and offers ongoing support. NGS Solution fits startups and smaller firms that need one partner for an MVP or a defined app build. It is not a large transformation consultancy.
Key Facts
- Best for: Fintech MVPs and custom business applications
- Core services: Custom software, web apps, mobile apps, AI, data, enterprise solutions
- Specialization: Financial management, banking, and payment applications
- Location: Serves Denver, Colorado
- Notable strength: Coverage across mobile, web, and backend development
Contact Information
- Website: ngssolution.com
- E-mail: moc.noitulossgn@ofni
- Facebook: www.facebook.com/people/NGS-Solution/61569921033797
- Twitter: x.com/ngssolution1
- LinkedIn: www.linkedin.com/company/ngssolution
- Instagram: www.instagram.com/ngs.solution
- Address: 4400 State Hwy 121, Lewisville, TX 75056, United States
- Phone: +1 (972) 474-3919
12. Zenveus
Zenveus builds fintech software for founders and financial product teams in Colorado. Its main job is turning product ideas and unstable prototypes into secure, production-ready apps.
The team handles architecture, product development, payments, compliance workflows, cloud deployment, and scaling. It helps teams through an MVP launch, a technical recovery, or a growth stage. Colorado fintech startups with small in-house engineering teams may prefer it to a large enterprise consultancy.
Key Facts
- Best for: Colorado fintech startups and product recovery projects
- Core services: Product engineering, architecture, cloud deployment, scaling, technical recovery
- Specialization: Production-ready fintech software
- Location: Serves fintech companies across Colorado
- Notable strength: Focus on early-stage and growth-stage financial products
Contact Information
- Website: zenveus.com
- E-mail: moc.suevnez@tcatnoc
- Facebook: www.facebook.com/zenveus
- LinkedIn: www.linkedin.com/company/zenveus
- Instagram: www.instagram.com/zenveushq
- Address: 4539 N 22nd St, Ste R, Phoenix, Maricopa County, Arizona, 85016
- Phone: +1 559-823-8997
13. Mintec
Mintec provides fintech software engineering for companies in Denver. It focuses on bank-grade development, secure architecture, payment systems, and the compliance needs of financial apps.
Mintec suits projects where standards such as SOC 2 and PCI DSS must shape the design from day one. Typical work includes payment products, customer portals, internal finance platforms, APIs, and modernization. It is a local, fintech-focused alternative to a general digital agency.
Key Facts
- Best for: Security-focused fintech development in Denver
- Core services: Fintech engineering, architecture, payments, APIs, modernization
- Specialization: Bank-grade financial software
- Location: Denver, Colorado
- Notable strength: Security and compliance considerations built into software delivery
Contact Information
- Website: mintec.co
- Facebook: www.facebook.com/mintecdigital
- LinkedIn: www.linkedin.com/company/mintecdigital
- Instagram: www.instagram.com/mintecdigital
- Address: 30 N. Gould St. Ste R, Sheridan Wyoming 82801
- Phone: +1 786 638-8688
Conclusion
Colorado businesses are not short on fintech development options, but the right fit depends on what is actually being built. A startup shaping its first payments product will need a different partner from a bank replacing an aging core application or an investment firm working with real-time market data. Itexus brings focused experience across banking, trading, lending, payments, and wealth management, while Colorado-based and locally represented teams offer closer access for projects where regular face-to-face collaboration matters.
Before making a decision, look beyond the size of the company or the length of its service list. Relevant financial experience, security practices, integration knowledge, and a realistic support model tend to matter much more once development begins. A good first conversation should clarify who will do the work, how compliance will affect the architecture, and what happens after launch. Those details usually reveal more about the likely partnership than a polished sales pitch ever will.