Fullstack Developer

Primathon; Gurugram District; On-site; INR 2,600,000 - 3,800,000; Full time

Job summary

Primathon is seeking an experienced SDE 2 to own end-to-end backend services using Node.js/NestJS, with Go for select modules. You’ll model data in Postgres and MongoDB, manage Kafka flows, and contribute across the stack with React/Svelte frontend work when it speeds delivery.

You’ll mentor SDE 1s, strengthen CI/CD, and help raise the bar for reliability and maintainability in a fast-moving team.

Qualifications

• Strong backend engineer in JavaScript/TypeScript on Node.js/NestJS.
• Working knowledge of Go or willingness to learn.
• Experience modeling data in Postgres and MongoDB.
• Experience with event-driven systems (Kafka or equivalent).
• Comfort across the stack, including React/Svelte.

Responsibilities

• Design and build backend services in Node.js/NestJS, with Go for select services.
• Own event-driven flows on Kafka—throughput, ordering, and failure handling.
• Document architecture and trade-off decisions for systems you lead.
• Ship features end to end, integrating with frontend when fastest.
• Strengthen CI/CD, observability, and deployments on AWS.
• Review code, mentor SDE 1s and AEs, raise team quality.
• Drive delivery of ambiguous problems with minimal hand-holding.

Skills

NodeJS

NextJs

PostgreSQL

MongoDB

Go Programming

Tools

Kafka

PostgreSQL

MongoDB

Redis

AWS

Job description

Why This Role Matters

Our backend is what keeps checkout, RTO, and payments fast and reliable at ~$2B GMV across 15,000+ merchants. As an SDE 2 you own services end to end, make the architecture calls that keep them performant, and set the technical bar for the engineers around you. The trade-offs you pick show up directly in merchant conversions and platform reliability - this is a builder's seat with real ownership.

What You'll Own

• Design and build backend services primarily in Node.js/NestJS, with Go for select services, backed by Postgres, Mongo, and Redis.
• Own event-driven flows on Kafka - throughput, ordering, and failure handling.
• Make and document the architecture and trade-off decisions for systems you lead.
• Ship features end to end, dropping into the frontend (React/Svelte) when it's the fastest path.
• Strengthen CI/CD, observability, and deployments on AWS.
• Review code, mentor SDE 1s and AEs, and raise the quality bar on the team.
• Take ambiguous problems and drive them to delivery with minimal hand-holding.

Who You Are

• Strong backend engineer in JavaScript/TypeScript on Node.js/NestJS (our primary stack); working knowledge of Go, or ready to pick it up.
• Solid at data modelling across Postgres and Mongo, and knows when Redis earns its place.
• Has built and scaled event-driven systems (Kafka or equivalent).
• At home on the backend but happy to work across the stack in React/Svelte.
• Thinks in systems - scalability, reliability, maintainability - not just features.
• Has mentored engineers and owns code quality and delivery, not just their own tickets.
• Communicates clearly and does well with ambiguity in a fast-moving team.

Skills

Skills:- NodeJS (Node.js), NextJs (Next.js), PostgreSQL, MongoDB and Go Programming (Golang)