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Services · APIs
Custom API development services
Mobile apps, dashboards, and partner integrations all meet at the API. I build typed, documented backends with clear auth boundaries — the same patterns used in SwecoRide payouts and GPX multi-tenant ingestion.
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Who it's for
- Startups whose React or mobile client needs a real backend instead of serverless glue
- Teams integrating third-party webhooks (payments, identity, trackers) behind one facade
- Founders replacing a prototype Firebase setup with PostgreSQL and proper migrations
Core features for version one
- REST (or scoped GraphQL) endpoints with validation on every input
- Authentication and authorization (JWT, sessions, or API keys as appropriate)
- PostgreSQL or MongoDB schema with migrations
- Webhook handlers with idempotency for payment and external events
- OpenAPI or README documentation for frontend consumers
- Staging and production environment configuration guidance
Recommended stack
- NestJS or Express
- TypeScript
- PostgreSQL or MongoDB
- Stripe or partner SDKs
- Jest or similar tests on critical paths
Typical timeline
TODO(owner): confirm typical timeline ranges for API-first builds based on recent quotes.
Risks to plan for
- Exposing admin operations without role checks because "we will add auth later"
- Accepting webhooks without signature verification or replay protection
- Schema changes without migrations, breaking staging and prod at the worst time
- Undocumented endpoints that become tribal knowledge within a week
What this costs
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.
Proof
Read the matching case study, or open live products on the work page.
Related guides
Related services
FAQ
NestJS or plain Node?
NestJS when the API will grow modules, guards, and team contributors; Express-style Node for smaller scoped APIs. The guide on Node vs NestJS for startup MVPs covers tradeoffs.
What does custom API development cost?
A focused API with auth and core resources often starts from $2,999+. Multi-tenant, payments, and realtime features typically move toward $4,999+.
Can you work alongside our frontend team?
Yes — contract-first endpoints, shared Postman or OpenAPI, and PRs in your monorepo or paired repos.
Do you handle Stripe or Connect webhooks?
Yes — payment and Connect events are scoped with verified signatures and idempotent handlers, following patterns from SwecoRide.
Send a short brief
Share goals, timeline, and rough budget — you'll get a clear scope and USD quote. Or start from the matching hire page.
Talk on WhatsApp / email