Senior Backend / Full Stack Engineer Node.js (with React.js)

Backend-focused (~70%) with React.js frontend (~30%) — TypeScript

Experience: 3–8 years

Employment Type: Full time

Work Mode: Work From Office (WFO) only — 9:30 AM to 6:30 PM, Monday to Friday

Location: Client location-Noida/Delhi

Reports To: Engineering Lead

Role Overview

We are looking for a hands-on Senior Backend Engineer (with full-stack ability) who is a strong thinker and independent problem-solver. The role is backend-heavy — roughly 70% backend in Node.js (TypeScript) and about 30% frontend in React.js (TypeScript). You will design APIs and data models, build integrations, and take real ownership: given just a feature idea — even without a detailed BRD, PRD, or Figma design — you should be able to do the R&D;, define the requirements and approach yourself, and build it end to end.

We want someone with an edge — who takes initiative, fills in the gaps, digs into unknowns, and ships.

Primary Focus Areas

- Backend (Node.js): (~70%) Design and build backend services and APIs in Node.js with TypeScript (Express/NestJS) — REST APIs, data modeling in PostgreSQL via an ORM, Redis caching, third-party integrations, and security.
- Frontend (React.js): (~30%) Build responsive front-ends in React.js (TypeScript) — components, state management, hooks, and API integration; turn a Figma design (or just a rough idea) into working UI.

Key Responsibilities

- Backend Development: Develop and maintain Node.js (TypeScript) services and REST APIs with clean, testable, well-structured code.
- Database & ORM: Design and optimize PostgreSQL schemas and work through an ORM (Sequelize or Prisma) — migrations, relations, indexing, and transactions; write raw SQL when needed.
- Integrations:



Build integrations with third-party services and APIs (payments, auth providers, messaging, internal systems) reliably and securely.
- Security & Auth: Own application security — authentication/authorization with Keycloak (JWT/OAuth2/OIDC), input validation, secrets handling, and secure coding practices.
- Observability & Tracing: Instrument services with observability and distributed tracing (OpenTelemetry with a tool like Jaeger / Grafana Tempo / SigNoz) to debug and monitor across services.
- R&D; & Ownership: Take ownership end to end: from just a feature idea — without waiting for a detailed BRD, PRD, or Figma design — do the R&D;, define the requirements and approach yourself, and build/deliver it independently.
- Frontend Development: Build React.js UIs (~30% of the role): reusable components, state management, hooks, and API integration — from a Figma design or, when there isn't one, from the idea itself.
- Caching & Performance: Use Redis for caching, sessions, or queues to improve performance and scalability.
- Testing & Quality: Write unit and integration tests; participate in code reviews and maintain code quality.
- Collaboration & Mentoring: Collaborate with product, design, and QA; guide and mentor junior engineers.

Required Skills & Experience

- MUST HAVE: (Most important) A strong thinker and self-starter who can take just a feature idea — without a detailed BRD, PRD, or Figma design — do the R&D;,



define it themselves, and build it independently with an ownership mindset and an edge.
- 3–8 years of hands-on backend/full-stack development experience in production environments.
- Strong Node.js with TypeScript — building REST APIs and backend services (Express or NestJS). This is the core of the role.
- Solid PostgreSQL / SQL and hands-on experience with an ORM — Sequelize or Prisma — schema design, joins, indexing, transactions, and query optimization.
- Experience building third-party integrations and secure APIs, with authentication/authorization using Keycloak (JWT/OAuth2/OIDC).
- Working React.js with TypeScript (~30% of the role) — hooks, components, state management, and building UI from a Figma design or just an idea.
- Experience with Redis (caching/sessions/queues) or a similar in-memory store.
- Familiarity with observability and distributed tracing (OpenTelemetry, Jaeger/Tempo/SigNoz, or similar).
- Strong JavaScript/TypeScript fundamentals — async/await, promises, and the Node.js event loop.

Good to Have

- Delivery & Ops: Git workflows, CI/CD pipelines (Jenkins/GitHub Actions), and containerized deployments (Docker); troubleshooting production issues and doing RCA.
- GraphQL (Apollo) for API design.
- NestJS and message queues (RabbitMQ/Kafka).
- Cloud deployment (GCP / AWS / Azure).
- Testing frameworks (Jest, React Testing Library, Cypress/Playwright).
- NoSQL (MongoDB), WebSockets, and microservices architecture.
- Frontend tooling (Vite/Webpack), Tailwind/Material UI, and performance profiling.

Education Bachelor's degree in Computer Science, Engineering, or a related field — or equivalent practical experience.Role & responsibilities

📌 Senior Full Stack Developer (Delhi)
🏢 Moneymul Technologies
📍 Delhi