Is Node.js the right choice for our backend?

Node.js excels for I/O-heavy API backends, real-time applications, and BFF (Backend for Frontend) layers. For CPU-intensive workloads like heavy ML inference, we recommend Python microservices alongside Node.js rather than Node.js alone.

Do you use Express or other Node.js frameworks?

We select based on project needs: Express for established ecosystems, Fastify for high-throughput APIs (2–3x Express performance), and Next.js Route Handlers for full-stack Next.js projects. We use Nest.js for large enterprise backends requiring strict architectural patterns.

How do you handle Node.js application security?

We implement Helmet.js for security headers, express-rate-limit for DDoS protection, Joi/Zod for input validation, parameterised queries to prevent injection, OWASP-aligned code review, and regular dependency vulnerability scanning.

Can you scale our existing Node.js API to handle more traffic?

Yes. We profile the bottlenecks (typically database queries or blocking sync operations), implement connection pooling, Redis caching, database indexing, horizontal scaling, and async processing to dramatically increase throughput without a full rewrite.

How do you document the Node.js APIs you build?

We generate OpenAPI 3.0/Swagger documentation automatically from code using swagger-autogen or tRPC, maintain Postman collections with example requests, and write architecture decision records (ADRs) for all significant technical choices.

Technology · Node.js Development

Node.js Development Services

Senior Node.js engineers building fast, scalable REST APIs, real-time WebSocket applications, and microservice backends that power your product's core.

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What We Deliver

Node.js is the engine behind some of the world's most scalable API backends — LinkedIn, Netflix, Uber, and PayPal all run Node.js at their core. InfinityStack's Node.js developers build production-grade backends with TypeScript, comprehensive testing, async processing, real-time capabilities, and cloud-native architecture patterns that handle millions of requests without breaking a sweat.

TypeScript-first Node.js — full type safety on your backend
RESTful and GraphQL API design and development
Event-driven microservice architectures with message queues
Real-time capabilities via WebSockets and Server-Sent Events
JWT, OAuth 2.0, and API key authentication patterns
Horizontal scaling and load balancing on AWS/GCP

Services & Capabilities

REST API Development

Versioned, documented RESTful APIs with proper HTTP semantics, rate limiting, validation, and comprehensive error handling.

GraphQL API Development

Apollo Server and Pothos GraphQL APIs with subscriptions, DataLoader batching, and schema-first design for complex data graphs.

Real-Time Applications

WebSocket servers with Socket.io for live chat, collaborative tools, real-time dashboards, and multiplayer features.

Microservices Architecture

Event-driven microservice systems with RabbitMQ or Kafka for async communication, service discovery, and graceful fault tolerance.

Background Job Processing

Bull/BullMQ job queues for scheduled tasks, email dispatch, PDF generation, webhook delivery, and resource-intensive processing.

Third-Party API Integration

Stripe, Twilio, SendGrid, Plaid, AWS services, and any third-party API integration — properly error-handled and retry-safe.

How We Work

API Design

OpenAPI 3.0 specification written and reviewed before development begins — contracts agreed before any code is written.

Architecture Setup

Repository structure, middleware stack, authentication patterns, and database connection pool configured as a foundation.

Core API Development

Endpoint-by-endpoint development with unit tests, Swagger docs auto-generated, and Postman collections maintained.

Security Hardening

OWASP Top 10 review, rate limiting, input validation, SQL injection prevention, and security header configuration.

Performance Testing

Artillery or k6 load tests to validate throughput and latency targets under realistic concurrent load.

Deployment & Monitoring

Container deployment with PM2 or Docker, health checks, APM instrumentation, and structured logging.

Technologies We Use

Node.js 22 LTSTypeScriptExpress / FastifyMongoDB / PostgreSQLRedisBullMQJWT / OAuth 2.0Docker / AWS ECS

Frequently Asked Questions

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