Back End Developer

3 weeks ago

Vadodara, India OPTIMAS.AI Inc Full time

Designation: Back-end Engineer — NestJS / TypeScript (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 NestJS + TypeScript with Postgres (Prisma), Redis (BullMQ), and S3/R2, integrate SSO and third-party vendors, and keep the system observable and secure. What you’ll do: - Build NestJS services (REST/GraphQL), modules, guards, interceptors; generate OpenAPI. - Model data in Postgres (Prisma); implement caching and BullMQ 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 (NetSuite). - 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 + TypeScript; hands-on NestJS (modules/guards). - SQL schema design; Prisma/TypeORM; performance/query basics. - Redis for cache/queues; BullMQ workers; job retries/backoff. - Secure file handling (pre-signed URLs), pagination, validation, error shapes. - AuthN/AuthZ concepts: OIDC/JWT/opaque tokens, role/permission checks. - Good Git/GitHub hygiene, testing mindset, readable docs. Nice-to-haves - Fastify adapter, OpenTelemetry, structured logging. - Vector/full-text search (pgvector/OpenSearch). - PDF generation (Puppeteer) and Excel exports. - Basic security (OWASP, rate-limits, input sanitization).

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