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API Development Agency: Scalable Backends That Power Your Product

Your frontend is only as good as the API behind it. We design, build, and maintain production-grade APIs and backend services using TypeScript, Node.js, and Supabase — engineered for reliability, speed, and developer experience.

50,000+ conversions4.9★ from 150+ reviewsAPIs serving 120 countries

Bad APIs create bad products — and technical debt that never stops growing

Poorly designed APIs cause cascading failures: inconsistent data, flaky integrations, slow mobile apps, and frustrated developers. Every workaround your frontend team writes to compensate for API shortcomings adds technical debt that compounds with every sprint.

25%
of developer time wasted on integration issues
60%
of API-related outages caused by poor error handling
3x
increase in dev velocity with well-designed APIs

APIs and backend services built for the long term

RESTful API Design

Clean, versioned REST APIs with OpenAPI documentation, proper HTTP semantics, pagination, filtering, and comprehensive error responses.

GraphQL When It Matters

For complex data requirements and mobile-first products, we build GraphQL APIs with efficient resolvers, dataloader patterns, and type-safe client generation.

Third-Party Integrations

Stripe, SendGrid, Twilio, HubSpot, Salesforce, and hundreds more. We build robust integrations with retry logic, webhook handling, and graceful fallbacks.

Supabase & Database Architecture

Relational schema design, Row Level Security, real-time subscriptions, and edge functions. Your data layer is secure, fast, and maintainable.

Authentication & Authorization

JWT, OAuth 2.0, API keys, and role-based access control. We implement the right auth strategy for your use case with proper token lifecycle management.

Monitoring & Documentation

Auto-generated API docs, request logging, error tracking, and uptime monitoring so your team and your partners can integrate with confidence.

Backend infrastructure trusted across 120 countries

50,000+
Conversions powered by our APIs
120
Countries served
99.9%
API uptime average
4.9/5
Client satisfaction
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API development packages

API Integration

$2,500€
  • Connect up to 3 third-party APIs
  • Webhook handlers & retry logic
  • TypeScript SDK generated
  • Error handling & logging
  • API documentation
  • Delivered in 1-2 weeks
Recommandé

Full API Development

$7,500€
  • Custom REST or GraphQL API
  • Database design & setup
  • Authentication & authorization
  • Third-party integrations
  • Automated testing suite
  • 3 months support included

Enterprise

Custom€
  • Microservices architecture
  • Event-driven messaging
  • Multi-region deployment
  • Rate limiting & API gateway
  • Custom SLA & uptime guarantee
  • Dedicated backend team

Frequently asked questions

REST is ideal for most applications — it is simple, cacheable, and well-understood. GraphQL shines when you have complex data relationships, multiple client types (web, mobile, partners), or need to minimize over-fetching. We recommend the right approach during our scoping call.

Yes. We regularly audit existing APIs, identify performance bottlenecks and security gaps, then refactor incrementally without breaking existing consumers. We version all changes to ensure backward compatibility.

Absolutely. Many of our APIs power both web and mobile clients simultaneously. We design for mobile-first constraints like bandwidth, latency, and offline support, and generate typed SDKs for iOS and Android teams.

Security is built in from the start: input validation, SQL injection prevention, CORS configuration, rate limiting, and API key rotation. For enterprise clients, we implement API gateways with advanced threat protection and usage analytics.

Build APIs that your team and partners will love

Get a free API architecture consultation and see how we can accelerate your backend development. No commitment required.

Free quote →