Hire · APIs

Hire an API developer for REST, auth, and webhooks

Your mobile app, React front, or partner integration is only as good as the API behind it. I design and ship Node.js and NestJS APIs with sane auth, idempotent webhooks, and deploy docs — for founders who need the backend to survive production, not demo day.

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What you get

REST API design: resources, versioning, errors, and pagination that clients can rely on
Auth (sessions, JWT, or API keys) matched to your client types
Stripe and third-party webhooks with retries and idempotency in mind
PostgreSQL or MongoDB chosen from data shape — not habit

How engagement works

Map endpoints, auth model, and external systems (payments, email, CRM).
Choose Express vs NestJS based on complexity and who will maintain the code.
Implement with staging, env templates, and webhook testing before go-live.
Handoff OpenAPI or route docs plus a local-boot README.

Who it's for

Best for US, UK, and Australia products that already have a UI or mobile client and need a dependable API layer — or greenfield APIs that must integrate with Stripe, maps, or AI providers without brittle one-offs.

Proof

Live products you can open before you brief a build. Full list on the work / portfolio page.

MealApp — Food ordering, reservations, and payments
SwecoRide — Sweden ride-share with identity and payouts
The CareMD — Telehealth / virtual care web app
GPX — GPS / AI supply-chain tracking

Pricing

Brand & landing work often starts near $499. Multi-page business sites commonly from $1,299. Full-stack web apps from $2,999+. Custom SaaS from $4,999+ depending on scope. Every quote is itemized in USD — see packages on the services & pricing page.

Related guides

Related services

Ready to brief a build?

Send goals, timeline, and rough budget — you'll get a clear scope and USD quote. Or compare packages on the services page. See live proof on the work page.

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FAQ

Do you document APIs for frontend and mobile teams?

Yes — route lists, example payloads, auth notes, and staging base URLs are part of handoff so other builders are not guessing.

Can you add an API in front of an existing database?

Often yes, after a short audit of schema and risk. Sometimes a thin read layer is enough; sometimes migrations are needed first.

Express or NestJS for a new API?

Express fits lean MVPs and webhook receivers. NestJS pays off when modules, guards, and multiple contributors are expected — see the Node.js vs NestJS guide.

What does custom API work cost?

A focused API (auth, core resources, deploy) often lands in the full-stack band from $2,999+. Larger multi-tenant or billing-heavy APIs scope toward $4,999+.

Hire an API developer for REST, auth, and webhooks

FAQ

Do you document APIs for frontend and mobile teams?

Yes — route lists, example payloads, auth notes, and staging base URLs are part of handoff so other builders are not guessing.

Can you add an API in front of an existing database?

Often yes, after a short audit of schema and risk. Sometimes a thin read layer is enough; sometimes migrations are needed first.

Express or NestJS for a new API?

Express fits lean MVPs and webhook receivers. NestJS pays off when modules, guards, and multiple contributors are expected — see the Node.js vs NestJS guide.

What does custom API work cost?

A focused API (auth, core resources, deploy) often lands in the full-stack band from $2,999+. Larger multi-tenant or billing-heavy APIs scope toward $4,999+.