APIs that connect the things that weren't meant to.
We design, build, and document APIs that developers actually want to use — clean contracts, consistent error handling, versioning that doesn't break consumers, and monitoring from the first request.
What we build
Software for every layer of your business.
REST APIs
Resource-based APIs with consistent conventions, proper status codes, and pagination that scales without surprises.
GraphQL APIs
Flexible query APIs for frontend teams that need exactly the data they ask for — nothing more, nothing less.
Webhooks & Event Systems
Real-time event delivery with retry logic, signature verification, and developer-facing delivery dashboards.
Third-Party Integrations
Connecting to Stripe, Salesforce, HubSpot, Twilio, and any platform your business currently runs on.
API Documentation
Developer docs with real code examples, interactive playgrounds, and a changelog that development teams trust.
Internal APIs & Microservices
Service-to-service APIs that enforce boundaries, reduce coupling, and make the overall system comprehensible.
Who we work with
Built for founders, CTOs, and product leaders.
SaaS companies
Your product needs to integrate with the tools your customers already use. We build the layer that connects them cleanly.
Marketplace businesses
Multi-sided platforms where sellers, buyers, and partners all need programmatic access to your data and operations.
Enterprise teams
Legacy systems that need a modern API layer without replacing the underlying logic that's been running for years.
Developer-facing products
API-first products where the developer experience IS the product — and the docs are as important as the code.
Companies with integration debt
A tangle of point-to-point integrations that's become unmanageable. We architect the right long-term solution.
Fintech and healthcare
Sector-specific API requirements — PSD2, FHIR, HL7 — built correctly from the start, not retrofitted for compliance.
Our process
How we deliver. Step by step.
Discovery
Map every system that needs to communicate, the data that flows between them, and the edge cases when things fail. Integration complexity hides in edge cases.
API Design
RESTful, GraphQL, or event-driven — chosen for the use case, not preference. Versioning strategy, authentication model, and error formats agreed before building.
Development
Clean, consistent implementation with comprehensive test coverage. Mock servers for consumer teams to develop against in parallel.
Testing
Contract testing, load testing, and failure injection. We test what happens when the third-party API you depend on goes down.
Documentation & Launch
Developer documentation that people actually read — code examples, interactive playground, changelog. Monitored in production from day one.
Investment
An investment, not a line item.
A well-built API is leverage — it lets other systems, teams, and partners build on your product for years. What it takes depends on scope, consumers, and complexity.
How we work together
Fixed Scope
Well-defined projects
We agree the deliverables and price upfront. You get budget certainty; we carry the estimation risk.
Time & Materials
Evolving requirements
You pay for time spent, see working software every sprint, and change direction without renegotiating a contract.
Dedicated Team
Ongoing product work
A committed team works as an extension of yours, billed monthly, with full flexibility on what gets built.
What shapes your estimate
Number of endpoints
The surface area of data and operations the API exposes.
Consumer types
Internal-only versus public, developer-facing APIs with SLAs.
Integration complexity
How many external systems, and how well they are documented.
Auth & rate limiting
The security and abuse-prevention requirements for the API.
Documentation depth
A basic reference versus a full developer portal and playground.
Reliability requirements
Uptime guarantees change how the API is built and tested.
The only way to a real number is a real conversation. Tell us what you're building — we'll scope it and send a clear, itemised estimate. No obligation.
Get your estimateWhy DualTech Labs
Three things clients tell us matter most.
You own the code. Always.
Full source code ownership transfers on delivery. No lock-in, no licensing fees. Take it to any team at any point.
One team, start to finish.
Design, engineering, and QA under one roof. No handoffs, no miscommunication between agencies.
Real demos every two weeks.
You see working software from sprint one. No black-box delivery. No surprises at the end of a long engagement.
FAQ
Common questions. Direct answers.
Start with a conversation.
Tell us what you're building. We'll scope it, tell you exactly how we'd approach it, and give you a clear estimate — no commitment, no agency fluff.