Hire Dedicated Node.js & Python Developers

Candidates complete a live 3-hour challenge requiring them to build an asynchronous scraping and data ingestion engine. They must demonstrate non-blocking I/O using asyncio and aiohttp, avoid blocking the event loop with synchronous disk/database operations, and properly offload CPU-bound cryptographic calculations to Celery workers or multiprocessing pools to bypass GIL constraints.

We primarily staff senior engineers specialized in strict TypeScript and NestJS for enterprise systems requiring modular architecture, dependency injection, and clean domain boundaries. For lightweight microservices or edge functions, our developers also build high-performance services with Fastify or Express accompanied by Zod schema validation.

Our backend engineers design connection pooling architectures using PgBouncer for PostgreSQL, connection pooling flags in Prisma/SQLAlchemy, and Redis rate limiting. They implement exponential backoff retry algorithms, circuit breakers, and read-replica routing to ensure databases never freeze under sudden concurrent traffic spikes.

Your dedicated engineer integrates directly into your workspace: participating in daily standups via Slack or Teams, picking tickets from Jira or Linear, pushing to private GitHub/GitLab repositories with automated CI test runs, and generating OpenAPI Swagger documentation for every endpoint.

We provide a 2-week risk-free trial. You evaluate the developer's velocity, architecture, and code quality directly in your active sprint backlog. If they do not meet your technical expectations, you pay nothing or receive an immediate senior replacement.