Well-designed APIs that connect your systems, power your products, and scale reliably — built by engineers who integrate for a living.
APIs are the connective tissue of modern software. Done well, they let your apps, partners, and systems talk to each other securely and reliably; done poorly, they become a bottleneck. TechEsperto designs and builds robust REST and GraphQL APIs, and integrates third-party services, so your systems work as one. Integration is our core strength as a SuiteCRM Elite Partner — we’ve spent a decade connecting business-critical systems cleanly.
We’ve delivered APIs and integrations across 500+ projects in 30+ countries over 10+ years.
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500+ projects delivered · 30+ countries served · 10+ years in business · 98% client retention · ISO 9001 certified · SuiteCRM Elite Partner
This is part of our wider custom software & SaaS practice.
Our API development services
- REST & GraphQL API development — clean, documented, versioned APIs for your products.
- Third-party API integration — connect to payments, messaging, mapping, and more; see API integration services.
- API for apps & SaaS — power your mobile apps, web apps, and SaaS.
- Microservices APIs — scalable, decoupled service architecture.
- API gateways & security — auth (OAuth), rate limiting, and access control.
- Webhooks & event-driven APIs — real-time, push-based integrations.
- API documentation — developer-friendly docs (OpenAPI/Swagger).
- Legacy API modernization — refactor and replace aging APIs; see legacy modernization.
Why choose TechEsperto for API development
- Integration is our core strength. We build APIs that connect cleanly to your CRM, ERP, and the wider stack.
- Designed to last. Versioned, documented, secure APIs that scale and stay maintainable.
- Secure by design. OAuth, encryption, rate limiting, and access control built in.
- You own everything. Clean, documented, fully owned code — no lock-in.
- Senior teams and transparent, milestone-based pricing.
- Proven delivery. 500+ projects, 30+ countries, 98% client retention, ISO 9001 certified.
Our API development process
- Discover — the systems, consumers, and data your API must serve.
- Design — endpoints, contracts (OpenAPI), auth, and versioning.
- Build — implement secure, performant APIs.
- Document — clear, developer-friendly documentation.
- Test — functional, load, and security testing.
- Deploy & monitor — gateways, monitoring, and support.
See our full approach on Our Process.
Technologies we use
REST, GraphQL, OpenAPI/Swagger; Node.js, Python (FastAPI/Django), PHP (Laravel); OAuth/JWT auth; API gateways; webhooks and message queues; and cloud deployment via integration & cloud.
Industries we serve
We build APIs for fintech & BFSI, retail & eCommerce, healthcare, logistics, education, and real estate. Browse all industries.
Frequently asked questions