App Backend Development
The backend is the engine that powers your application. It handles authentication, stores data, processes business logic, sends notifications, integrates with third-party services, and serves content to your frontend. Anubiz Labs builds backend systems that are fast, reliable, and scalable — infrastructure you can trust when your user base grows from hundreds to hundreds of thousands.
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API Design and Development
We build RESTful APIs with consistent resource naming, proper HTTP status codes, pagination, filtering, and versioning. For applications that need flexible data fetching, we build GraphQL APIs with efficient resolver patterns that avoid the N+1 query problem. Every API is documented with OpenAPI specifications that serve as both documentation and contract for frontend developers.
Authentication is handled through JWT tokens with refresh rotation, OAuth2 for third-party login providers, and API keys for service-to-service communication. Rate limiting, input validation, and CORS configuration are applied at the API gateway level so every endpoint is protected by default.
We design APIs to be consumed easily by mobile clients. This means minimizing the number of requests needed to render a screen, supporting partial responses to reduce bandwidth, and implementing efficient caching headers that work with mobile network conditions.
Database Design and Optimization
Your database model is the foundation of your backend. We design schemas that reflect your business domain accurately, normalize data appropriately for your access patterns, and create indexes that keep queries fast as data volume grows. PostgreSQL is our default choice for relational data, MongoDB for document-oriented workloads, and Redis for caching and session storage.
Database migrations are version-controlled and run automatically during deployment. We write migrations that are safe to run in production — no table locks that freeze your application, no data transformations that take hours, and rollback scripts for every change. Your database schema evolves alongside your application code in a predictable, auditable way.
Background Processing and Queues
Not every operation belongs in a request-response cycle. Sending emails, processing images, generating reports, syncing with third-party APIs, and running analytics should happen asynchronously to keep your API responsive. We implement message queues with BullMQ or RabbitMQ that process these tasks reliably, with retry logic, dead letter queues, and monitoring dashboards.
For scheduled operations like daily reports, subscription renewals, or data cleanup, we implement cron-based job systems with distributed locking to prevent duplicate execution in multi-server environments. Every background job is idempotent, monitored, and alerting-enabled.
Scalability and Infrastructure
We design backends for horizontal scaling from day one. Stateless application servers behind load balancers, connection-pooled database access, and externalized session storage mean you can add capacity by spinning up more instances rather than upgrading to bigger hardware. Auto-scaling policies adjust capacity based on traffic patterns so you do not overpay during quiet periods.
All backend infrastructure runs in Docker containers managed by Docker Compose or Kubernetes depending on scale. Infrastructure is defined as code with Terraform, which means every environment is reproducible and every change is auditable. We deploy to infrastructure Anubiz Labs manages directly, eliminating the complexity and cost unpredictability of hyperscale cloud providers.
Why Anubiz Labs
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Skip the research. Tell us what you need, and we'll scope it, implement it, and hand it back — fully documented and production-ready.