Backend Engineer (Mid-Senior)

Narix Labs; Jaipur; On-site; INR 1,200,000 - 2,100,000; Full time

Job summary

Narixlabs in Jaipur is seeking a skilled backend engineer to own and evolve a live behavioural-science platform. You will design NestJS services, manage a multi-tenant PostgreSQL schema, and ensure data isolation and security as the product scales.

You will ship in weekly sprints, review PRs, mentor juniors, and own production operability including monitoring and runbooks. Strong TypeScript/NestJS experience and a passion for robust backend design are essential.

Qualifications

• 4+ years building production backend services in TypeScript/Node.js with NestJS experience
• Strong PostgreSQL: schema design, indexes, transactions
• Experience with multi-tenant systems and data isolation trade-offs
• Ownership of production services: monitoring, debugging, runbooks
• Strong written communication

Responsibilities

• Design and build NestJS services: REST APIs, background jobs, integrations, and the scoring engine
• Own the data model - PostgreSQL schema design, migrations, and performance in a multi-tenant world
• Maintain tenancy boundaries, authorization, and data isolation as features grow
• Ship in weekly sprints with tests for core logic, scoring, auth, payments
• Review pull requests and mentor the junior backend engineer

Skills

Backend development

System design

Multi-tenant awareness

Communication

Tools

NestJS

TypeScript

Node.js

PostgreSQL

Multi-tenant systems

Monitoring

Runbooks

Job description

You'll own backend services for a live behavioural-science platform: NestJS APIs, a scoring engine that turns structured assessments into results people act on, and multi-tenant foundations that have to hold as the client's business grows. The systems are in production with real users - this is stewardship and evolution of a living codebase, not greenfield toys.

Responsibilities

• Design and build NestJS services: REST APIs, background jobs, integrations, and the scoring engine;
• Own the data model - PostgreSQL schema design, migrations, and query performance in a multi-tenant world;
• Keep tenancy boundaries, authorization, and data isolation airtight as features grow;
• Ship in weekly sprints with tests where they count: business logic, scoring, auth, payments;
• Review pull requests and mentor the junior backend engineer

Requirements

• 4+ years building production backend services in TypeScript/Node.js, with real NestJS experience;
• Strong PostgreSQL: schema design, indexes, transactions, and the instinct for when the ORM is lying to you;
• You've built or maintained multi-tenant systems and can talk concretely about isolation trade-offs;
• Comfort owning services in production: monitoring, debugging live issues, writing runbooks;
• Strong written communication - decisions here get written down