API & SaaS Development
Other services
Most products live or die on the layer users never see: the API contracts, the billing logic, the auth flows, the queues that keep data moving. We design and build backend platforms and SaaS products end to end — from OpenAPI-first interface design and multi-tenant data models to rate limiting, usage metering, Stripe billing, and the deployment pipelines behind them. This is not theoretical for us: we run GeoIPHub, a real-time IP intelligence API serving lookups in under 100ms worldwide, and Tether, an encrypted tunnel relay built in Node.js and TypeScript that our own security product depends on every day. That operational reality shapes how we engineer for clients — strict input validation, honest error contracts, observability from day one, and infrastructure that holds up when traffic does something unexpected.
How we work.
A focused process that turns complexity into clarity — the same one we use to ship our own products.
Understand
We start with your goals, constraints, and the systems you already run — so what we build fits the way your business actually works.
Design
We map the architecture and the experience together, defining scope, milestones, and the metrics that will define success.
Build
Senior engineers ship in tight iterations with working software at every step — reviewed, tested, and ready for real traffic.
Run & improve
Launch is the start, not the finish. We monitor, measure, and keep improving the system as your business grows.
What you receive at every stage.
API Design and Documentation
OpenAPI-specified endpoints with versioning, consistent error contracts, and developer documentation your customers can integrate against without opening a support ticket.
Multi-Tenant SaaS Architecture
Tenant isolation, role-based access, and PostgreSQL schemas designed so one customer's load or data never leaks into another's — built for scale from the first migration.
Billing and Subscription Infrastructure
Stripe-powered plans, usage metering, proration, dunning, and webhooks wired correctly — the revenue layer treated with the same rigor as the product itself.
Auth, Rate Limiting, Hardening
API keys, OAuth, Redis-backed rate limits, and abuse controls modeled on what we run in production for GeoIPHub's public endpoints.
The stack we build on.
Node.js
RuntimeOur core backend runtime — it powers GeoIPHub's lookup service and Tether's encrypted relay, so we know its behavior under real load.
TypeScript
LanguageStrict typing across every API surface and shared contract, catching breaking changes at compile time instead of in your customers' integrations.
PostgreSQL
DatabaseOur default for multi-tenant SaaS data: row-level security, careful indexing, and migration discipline learned from operating our own production databases.
Redis
InfrastructureRate limiting, session storage, and hot-path caching — the layer that keeps API response times low when traffic spikes.
Stripe
PaymentsSubscriptions, metered usage billing, and webhook-driven entitlement flows, implemented so plan changes and failed payments resolve themselves without manual intervention.
OpenAPI
SpecificationSpecification-first design for every public API — contracts, generated client SDKs, and documentation that stay in sync with the code.
AWS / DigitalOcean
PlatformWe deploy and operate client platforms on both clouds — the same infrastructure that runs GeoIPHub's globally distributed API in production.
Get in touch.
Whether you have questions or just want to explore what's possible, we're here to help.