Top FastAPI Development Companies

The Blue Box

Your partner for automate intelligently. Scale confidently. Build beyond apps.

5.0(8)

5.0

8 reviews

At The Blue Box, we believe software should reduce complexity, automate work, and create real operational leverage. We partner with companies ready to move beyond manual processes and disconnected tools. From early MVPs to scalable platforms, we design and build intelligent digital systems powered by software and AI. Our approach is simple: understand your operations, identify automation opportunities, and build solutions that support long-term growth. No unnecessary complexity. No generic development. Just systems designed to scale. We work as your digital partner, helping you streamline processes, integrate AI thoughtfully, and build platforms that evolve with your business. The company serves as a long-term product partner for startups and scaling businesses in USA and LatAm, guiding them from initial validation through launch, growth, and optimization. Our client portfolio spans regulated and high-growth sectors including SaaS, FinTech, Healthcare, LegalTech, and EdTech, with HIPAA and GDPR compliance practices enabling us to operate confidently in compliance-sensitive environments.

April Innovations

Full Stack Enterprise App Development Company

5.0(1)

5.0

1 review

We are a full stack software engineering company with focus on Banking and Fintech applications. We have serviced clients in USA, UK and India. Our core areas of expertise are Enterprise Apps, Artificial Intelligence, Mobile Apps, E-Commerce, Platforms. We have worked on projects that has half a million users and have delivered projects with Bank level security. We prefer to work on micro teams model where we build a micro team for each of our client that acts as an extended tech team for the client.

Bafmin

Intelligent Systems for Small Business Operators

5.0(2)

5.0

2 reviews

Bafmin helps small business owners replace manual work with structured, AI-driven systems. Most operators are buried in email, follow-ups, quoting, scheduling, and internal communication. Growth stalls because the business depends on you to move every task forward. We fix that. We design and implement practical automation using proven tools. No custom software builds. No bloated retainers. We connect the systems you already use and turn them into a clean operational backbone. What you gain: • Automated lead capture and follow-up • Streamlined quoting and client onboarding • Clear task workflows and accountability • AI-assisted content and communication • Reduced admin time and fewer dropped balls You move from reactive to controlled. From busy to structured. From operator to owner. Bafmin builds intelligent infrastructure so your business runs without constant supervision.

Vincit

Digital Development and Design Agency with strong AI capabilities

Vincit is a trusted partner for companies like Logitech, Cisco, The New York Times and LTK in developing their digital products and services. With roots in Finland and presence in the US since 2016 we are now over 500 experts ready to serve you. We combine meaningful user experience design to top-tier technical development for mobile, web and cloud. With the use of latest AI tools, we are able to deliver projects more efficiently and help your organization gain AI-Driven-Development capabilities throughout the collaboration. Ask us for free consultation and quote for your project. We are especially interested in challenging projects with established companies.

Eltex Soft

Web Solutions | Mobile Apps | Team Augmentation

At EltexSoft we build custom software solutions, as well as augment existing engineering teams of startups, Fortune 500 and INC 5000 companies. Following business domains are the area of our highest expertise: • Sports, Health & Wellness, Longevity (web+mobile platforms) • Food Delivery (logistics, eCommerce) • Education (matching, CRMs, data management, online learning, LMS) • Medical Technology (HIPAA compliant web and mobile apps) • E-commerce, B2B and B2C marketplaces, payment solutions • HR & Recruiting (matching, CRMs) • Generative AI (storyboards, movie and animation making tools) Why EltexSoft? With decades of individual and team experience, we use best practices and process to make software happen and drive your ROI: • Focus on user experience, delivery and quality • A-players and 10x engineers building best in class apps • Business and values over process and technology • Test coverage, cross code reviews, perfect Ops and CI/CD • Excellence in communications and teamwork

Loopstudio

Secure Software Development and Design

5.0(2)

5.0

2 reviews

Welcome to Loopstudio. We are the strategic secure software development partner for businesses that harness the power of technology to create competitive advantages. Our services are designed to support companies launch secure and intuitive software, modernize legacy systems, optimize data ecosystems, and create AI initiatives that deliver ROI. For either SaaS products or business applications, we are a trustworthy and experienced technology partner that delivers high quality software. Our LATAM-based team counts with hundreds of delivered projects under our belts and over a decade partnering with US companies. We partner with CTOs, CIOs, and Product Heads to build and transform exceptional web and mobile products. OUR CORE SERVICES: - MVPs & POCs - Legacy System Modernization - AI-enabled Processes - AI Adoption Roadmap and Projects - Data Engineering / Data Environment Optimization and Modernization - Product Revamp / Redesign - Fractional CTO / Architect - High-Performance Team - Design, Development, Data, and Management

RemoteState

Innovative Transformation of Business with Top-notch Development and Design Solution

RemoteState works in cutting-edge backend and frontend technologies, empowering companies across the globe through innovative solutions and digital transformation. We offer our clients top-notch services that help startups and established corporations alike. Abiding by the principles and best practices of engineering, we serve our clients with the goal of 100% customer satisfaction. RemoteState is growing constantly, in the fields of Mobile App Development, Strategic Consulting, Web Development, Quality Assurance, and even more. We employ a proficient team of seasoned and passionate specialists whose expertise includes a wide repertoire of technologies. Guided by their profound knowledge in niche areas like Go, NodeJs, ReactJs, Kubernetes, Docker, and more, our creative techies constantly work on rich user experience. RemoteState is driven by our passion for innovation and quality as we constantly strive for quick delivery and proactive implementation.

TouchZen Media

Verified

A boutique mobile app agency based in Orange County, CA, helping startups and growing companies design, build, and scale iOS, Android, and web apps.

5.0(42)

5.0

42 reviews

We’re more than a digital agency — we work as an extension of your team. From concept to launch, we design and build products that are functional, intuitive, and aligned with your goals. Since 2014, our focus has been on crafting experiences that feel effortless and meaningful for the people who use them — delivering results that stand out for their clarity and impact.

ZenHeads is a full stack product company who will augment your team. We will work with you to develop your ideas, launch your product and pave the way to accelerate your company. We have more than a decade of experience with launching successful products in different indsutries, from healthcare to fintech.

Weelorum

Verified

AI-Powered Mobile Apps | iOS, Android, Flutter, React Native | MVP in 8 Weeks

WHY CLIENTS CHOOSE WEELORUM: We're not just another dev shop. We use AI-assisted development to deliver your mobile app faster, with fewer iterations, and at a fraction of the traditional cost. What makes us different: • AI-Accelerated Discovery Phase: 2 weeks instead of 4, same quality, half the cost • Claude AI + Cursor integration: 3x faster prototyping and code generation • Full-cycle delivery: Design → Development → QA → App Store launch • Long-term partnerships: avg 3+ years with our clients (Digiproduct — 5+ years) INDUSTRIES WE SPECIALIZE IN: • HealthTech (HIPAA-aware): Swim-Wise AI wellness platform • FinTech (Secure Payments): Jon D. Rock financial app • Social & Marketplace: Photo Shoot, Dating apps • E-Commerce: GetBooks digital bookstore • White-label for agencies: Digiproduct (5+ years) TECH STACK: iOS (Swift, SwiftUI) | Android (Kotlin, Jetpack Compose) | Flutter | React Native Node.js | Firebase | AWS | AI/ML Integration | Claude AI | Computer Vision OUR PROCESS: 1. Discovery Phase (2 weeks) — Research, wireframes, interactive prototype 2. Design (2–3 weeks) — UI/UX, design system, animations 3. Development (4–8 weeks) — Agile sprints, weekly demos, CI/CD 4. QA & Launch — App Store optimization, release management WHAT CLIENTS SAY: "We felt like collaborators, not clients" — Co-Founder, Social Media Startup "Released the final app in just three months" — CEO, Jon D. Rock "5+ years and counting" — Founder, Digiproduct

Requestum is a full-cycle software development company that specializes in transforming business ideas into scalable web and mobile applications. We provide a comprehensive suite of services ranging from initial business analysis to final product support. Core Services Artificial Intelligence: Advanced capabilities in Machine Learning, Computer Vision, LLM (Large Language Model) development, AI Agent creation, and RAG (Retrieval-Augmented Generation) services. Web Development: Custom solutions including CRM systems, marketplaces, SaaS platforms, and ERP software. Mobile Development: End-to-end development for iOS, Android, React Native, and Flutter. Design & Strategy: UI/UX design, business analysis, and a dedicated "Discovery Phase" to define project roadmaps and minimize risks. QA & Testing: Both manual and automated testing to ensure product security and performance. Startup Support: Specialized services for MVP (Minimum Viable Product) and PoC (Proof of Concept) development.

Square63

Agentic AI & Custom Software Development Company

5.0(4)

5.0

4 reviews

We engineer scalable software and autonomous AI agents that transform how businesses operate. From custom SaaS platforms to complex multi-agent workflows. We bridge the gap between "possible" and "production." Our services are engineered to deploy advanced AI systems that solve hard business problems. Our services include: - Agentic AI Development - Custom Software Development - AI/LLM Integration & Optimisation - Staff Augmentation We're not another AI consultancy that hands off research papers. We're engineers who ship production systems. Every project includes working code, documentation, and knowledge transfer.

Softo

Applied AI for Intelligent Solutions, Delivered.

We assemble focused Outcome Pods, small, senior teams that plan, build, and automate around your business goals, not just your backlog.

Onward delivers custom software, systems integration, and operational consulting for healthcare organizations. We help teams modernize their infrastructure, automate workflows, and improve data visibility through solutions designed around their existing processes and constraints. Our work enables healthcare organizations to scale operations while maintaining reliability and compliance.

GeekyAnts

Innovate. Collaborate. Build.

Global Tech Consulting & Product Development Firm Innovate. Collaborate. Build GeekyAnts is a global technology consulting and product development company specializing in digital transformation, custom software solutions, and end-to-end app development. With over 15 years of experience, we’ve partnered with 550+ clients including Google, SKF, WeWork, and ICICI Securities, delivering 800+ projects across a wide range of industries. We are passionate about building cutting-edge digital products using modern technologies like React, React Native, Flutter, Next.js, Node.js, Python, and GraphQL. Our approach combines AI integration, open-source innovation, and strong design thinking to deliver scalable, user-centric solutions. What We Do Digital Product Strategy & Consulting UI/UX Design & Design Systems Web & Mobile App Development Generative AI Integration Enterprise Modernization MVP Acceleration DevOps, QA & Testing IoT, Dashboards & Data Visualization Our Highlights 15+ years in the industry 800+ successful projects 50+ open-source tools, including NativeBase (React Native UI library) gluestack (React Open Source Award Winner) Strategic partnerships with Vercel, GitHub, AWS, and Expo Offices in USA (California), India (Bangalore), and UK (London) We assign dedicated teams tailored to your business needs, supporting you from idea to launch—and beyond.

Redian Software

AI/ML | Insurtech | Banking & Fintech | Loan Management, Core Banking | Enterprise CRM & ERP ( Odoo, Zoho, Salesforce)

Redian Software is a global technology partner delivering AI-driven insurance systems, core banking & fintech platforms, , AI/MLand product engineering. With engineering hubs in India and Kenya, we support clients across the USA, UK, Middle East, and Africa, with modern, scalable technology. 🏅 Partnerships & Recognitions -Zoho Advanced Partner -Awarded “Emerging Partner in East Africa” by Zoho -Odoo Learning Partner 💡 Solutions & Expertise - Insurance : Policy Administration System (PAS) • ML Pricing & Rating Engine • GenAI Virtual Agent • Insurance Broker Management - Banking & Fintech: Core Banking • Loan Management • SACCO & Credit Union Systems • Lending Platforms • Digital Wallet • Agency Banking • Internet & Mobile Banking - Enterprise Platforms: CRM & ERP implementation across Zoho, Odoo, and Salesforce - Product Engineering: Artificial Intelligence, Machine Learning, Custom Software Development, enterprise solutions for modernization, automation, and scale.

CyberCraft

CyberCraft — Building Scalable Software, AI Solutions, and Digital Platforms

5.0(1)

5.0

1 review

CyberCraft is a software development company helping startups and enterprises build scalable digital products, AI solutions, and complex platforms. Our team of experienced engineers, designers, and product specialists partners with companies worldwide to design, develop, and launch high-quality software that drives real business growth. We specialize in: • Custom software development • AI and machine learning solutions • SaaS product development • Web and mobile applications • Dedicated development teams • Legacy system modernization • Cloud architecture and DevOps From early-stage startups to established enterprises, we help organizations transform ideas into reliable, scalable products. Our development approach focuses on clean architecture, modern technologies, and transparent collaboration so clients can move faster with lower technical risk. CyberCraft engineers have contributed to products used by millions of users across industries including fintech, healthcare, AI platforms, and enterprise SaaS. If you're looking for a reliable technology partner to build, scale, or modernize your software, CyberCraft provides the expertise and engineering power to make it happen.

Emizen Tech

Verified

Your Ideas, Our Innovations!

5.0(30)

5.0

30 reviews

Emizentech is an acclaimed IT organization with its expertise lies in delivering top of the line e-commerce and mobile application solutions to various industry verticals. At Emizentech, we deliver the most efficient, scalable, and cost-effective e-commerce business websites and applications that propel massive traffic, sales, and conversions to your digital business and amplify overall business growth. We have a technically outstanding and highly experienced team of e-commerce developers and designers who can deliver ingenious and visually breathtaking website and application solutions that deliver the right information to users in a lucid way and turn them into hard-core loyal customers. Our core areas of expertise are: Ecommerce and CMS (Magento, WordPress, WooCommerce, Shopify, Opencart, Joomla, Drupal) Mobile Application Development (Android, IOS, Wearable, Flutter ReactNative, PWA) Web (Php, Laravel, Angular JS, Node JS, Express JS, React JS) Through meticulous analysis, time-tested and proven strategies, and blending the raw ideas of our web designers and developers, we create marvelous websites and applications that augment brand awareness, establish your business image as a juggernaut, and ultimately drive earth-shattering revenue to your business. At Emizentech, we don’t create ordinary websites and applications, we create noteworthy digital entities.