Back end developer

6 days ago

Varanasi, India OPTIMAS.AI Inc Full time

Designation: Back-end Engineer — Nest JS / Type Script (1–3 yrs) Job Location: Permanent Work from Home (The office location is in Bangalore, but Permanent Work from Home is being provided to all employees. Candidates anywhere in India can apply.) Experience: 1 - 3 years Notice period: Immediate joiner or a maximum of 30 days Role summary: Own APIs, integrations, and background jobs powering OPTIMAS’s portals. You’ll build services in Nest JS + Type Script with Postgres (Prisma) , Redis (Bull MQ) , and S3/R2 , integrate SSO and third-party vendors, and keep the system observable and secure. What you’ll do: Build Nest JS services (REST/Graph QL), modules, guards, interceptors; generate Open API . Model data in Postgres (Prisma); implement caching and Bull MQ workers in Redis . Implement SSO (OIDC with Okta/Azure AD) , RBAC, audit logs, rate-limits. Integrate vendor systems & webhooks : Disprz (LMS) , ticketing (e.g., Zendesk/Freshdesk), CRM, ERP (Net Suite). Implement exports (PDF/XLS), notifications, and secure file pipelines (pre-signed S3/R2). Add observability (logs/metrics/traces), error handling, and idempotency. Collaborate with FE/mobile; maintain API contracts in a monorepo package. Must-have skills 1–3 years with Node.js + Type Script ; hands-on Nest JS (modules/guards). SQL schema design; Prisma /Type ORM; performance/query basics. Redis for cache/queues; Bull MQ workers; job retries/backoff. Secure file handling (pre-signed URLs), pagination, validation, error shapes. Auth N/Auth Z concepts: OIDC/JWT/opaque tokens, role/permission checks. Good Git/Git Hub hygiene, testing mindset, readable docs. Nice-to-haves Fastify adapter, Open Telemetry, structured logging. Vector/full-text search (pgvector/Open Search ). PDF generation (Puppeteer) and Excel exports. Basic security (OWASP, rate-limits, input sanitization).

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