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Service · Backend, cloud & AI
Secure, documented APIs and back-end services in Node.js and PostgreSQL that power your web apps, mobile apps and integrations.
Overview
The back end is where business rules, data integrity and security live. We design APIs around clear contracts, validate every input on the server, and structure the code so it stays understandable as features are added.
Whether you need a new API for a mobile app, a single source of truth for several products, or integrations between existing systems, we document everything so other teams can build on it with confidence.
Problems we solve
The problem
Business logic is duplicated across the website, mobile app and spreadsheets.
Our approach
One API that owns the rules and data, used consistently by every client application.
The problem
Systems do not talk to each other, so data is copied by hand.
Our approach
Integrations, webhooks and background jobs that move data reliably, with retries and alerts.
The problem
An existing API is slow, undocumented or insecure.
Our approach
Profiling, query optimisation, input validation, authentication review and generated documentation.
Features
REST or GraphQL endpoints with versioning and consistent error handling.
Server-side validation, authentication, authorisation and rate limiting.
PostgreSQL schemas, migrations, indexes and transactional integrity.
Queues and scheduled jobs for emails, imports and long-running tasks.
Payments, accounting, CRM, messaging and other external APIs.
OpenAPI specifications and examples for every endpoint.
Deliverables
Technologies
Final technology choices are agreed with you during discovery.
Development process
Every step ends with something you can review, so priorities can be adjusted before the next one starts.
Resources, operations and error formats agreed and documented.
Schema, constraints and indexes for correctness and performance.
Endpoints developed with automated tests for rules and permissions.
Client apps and third-party systems connected against staging.
Logging, monitoring and alerting configured before go-live.
Use cases
Authentication, data sync and notifications for iOS and Android apps.
Connecting accounting, inventory, CRM and e-commerce tools.
Secure access for customers or partners to your data and services.
Replacing a fragile or undocumented legacy API in stages.
REST is simple, cache-friendly and suits most integrations. GraphQL helps when many clients need different shapes of the same data. We recommend based on your clients and team.
Every request is authenticated and authorised, inputs are validated on the server, secrets live in environment configuration, and sensitive operations are rate-limited and logged.
Often, yes — through file exports, database replicas or vendor-supported connectors. We assess the options and their reliability before committing.
Yes. Every API ships with OpenAPI documentation, example requests and a staging environment for testing.
Share a few details about your goals. We will reply with questions, a suggested approach and the next steps.