W2 Contract : : Sr. Backend Node.JS Developer in New York, NY (Onsite / Hybrid) LOCALS only : : Contract

W2 Contract Only, No C2C

Job Title : Senior Backend Node.JS Developer

Location : New York, NY (Onsite / Hybrid) LOCALS only

Duration : 6-12+ Months (W2 Contract)

Interview : Video and Onsite Interview

Visa - USC / GC / GC-EAD / H4 EAD / TN Only

Job Description

Role Overview

Build and scale low-latency, high-reliability backend services powering trading-adjacent and risk / treasury workflows. You'll lead development of Node.js microservices and APIs, integrate with internal / front-office systems, and collaborate closely with PMs / BAs, quants, and design / FE counterparts in an Agile / Scrum setup.

Key Responsibilities

• Design, implement, and operate Node.js backend services (TypeScript preferred) in a microservices and event-driven architecture (Kafka / RabbitMQ), focusing on performance, resilience, and observability.
• Build secure, versioned REST and GraphQL APIs; enforce schema governance, pagination, depth / complexity limits, and query timeouts.
• Optimize request paths, I / O, and concurrency; avoid blocking the event loop; instrument and profile services (APM, metrics, tracing).
• Implement robust data access layers (PostgreSQL / Timeseries / NoSQL), caching (Redis), and message workflows (Kafka consumer groups, idempotency, DLQs).
• Ship to AWS / EKS with CI / CD; containerize with Docker; design for scale, low latency , and high availability (multi-AZ patterns).
• Enforce security best practices (OWASP / Node), secret management, input validation, rate limiting, and dependency hygiene. If payments-adjacent, align with PCI DSS controls.
• Partner with PM / BA, front-end (React) and data / quant teams; translate business requirements into production-ready APIs and workflows with crisp stakeholder communication.

Required Qualifications

Nice to Have

Security / compliance familiarity (OWASP Top 10, npm supply-chain, PCI DSS alignment where relevant).