Full Stack Engineer

Role Summary We’re Wellness Coach—a B2B wellness platform. We’re hiring a dedicated, AI-first full-stack engineer with a backend emphasis who owns features end-to-end across Node.js/TypeScript/NestJS (primary) and React/TypeScript (secondary). You’ll ship with strong CI/CD , uphold SonarQube quality gates, and drive scaling & optimization across the stack. Responsibilities (backend-heavy) End-to-end delivery: requirement Gathering → design → estimate → implement → test → deploy → observe → iterate. Backend (primary – Node.js/TS/NestJS): Design and deliver REST APIs; enforce OAuth/JWT auth, RBAC, and rate limiting. Build high-throughput services with caching (Redis), message queues/streams (RabbitMQ/Kafka), and webhooks. Engineer resilient, observable microservices (retries, idempotency, circuit breakers, backpressure). Data: Schema design & migrations ( PostgreSQL/MySQL/MongoDB ); indexing, query tuning, partitioning. Thoughtful use of Redis for caching, locks, and ephemeral data. Frontend (supporting – React/TS): Implement and maintain accessible, responsive UIs; routing/forms; pragmatic state mgmt (React Query/Zustand/Redux). CI/CD: Build → test → scan → SonarQube quality gate → deploy ( blue/green/canary ) with automated rollbacks. Security & quality: SAST/DAST, dependency health, OWASP practices, meaningful code reviews, secret hygiene. Observability: Logs/metrics/traces (Sentry, Grafana/Prometheus), actionable alerts & SLOs. Scaling & optimization: Improve throughput/latency/memory, tune Node event loop, connection pooling; SSR/Next.js perf where relevant; capacity planning & cost control. AI-first workflow: Use Cursor/Copilot/LLM reviewers for coding, tests, and PR feedback with prompt hygiene, determinism, and secret safety. Working Hours & Collaboration Maintain 4–5 hours daily overlap with the US team, typically 2:00–11:00 PM IST (Mon–Fri) . Participate in sprint rituals, design reviews, incident/launch windows during the overlap. Minimum Qualifications 5–10 years building & shipping production systems with Node.js (TypeScript) and NestJS ; strong React (TypeScript) proficiency. Proven scaling & optimization achievements: DB/query tuning, effective caching/CDN, queueing/streaming, horizontal scaling, Core Web Vitals awareness for user-facing flows. Hands-on with Docker , CI/CD (GitHub/GitLab Actions), and a major cloud ( AWS/GCP/Azure ). Solid SonarQube experience (quality profiles, coverage gates, security hotspots). Testing depth: Jest/Vitest , React Testing Library , Playwright/Cypress ; testcontainers for integration tests. Excellent ownership, documentation, and cross-functional collaboration. Nice to Have Fastify, Next.js, GraphQL, WebSockets/event-driven designs. IaC ( Terraform/CDK ), GitOps/ArgoCD, feature flags, experimentation (Mixpanel). Node profiling ( clinic.js ), cost/perf tuning, accessibility (WCAG). CI/CD & Quality (Expectations) Branching: trunk-based or GitFlow with protected main; mandatory PR checks. Pipelines include: type-check, lint, unit → integration → e2e tests, SonarQube scan , SCA (Dependabot/Snyk), Docker build, deploy, smoke checks, auto-rollback hooks. Quality bar: Test coverage ≥ 80% overall (≥ 90% on core paths). 0 blocker issues in SonarQube; no new critical vulnerabilities/smells. Frontend preview builds meet perf budgets (LCP/TTFB/CLS). Definition of Done CI green (type-check, lint, tests); SonarQube gate passed . Telemetry & alerts configured; runbook/README updated; ADR/OpenAPI updated as needed. Feature flags set for safe rollout; migrations and rollback notes included.30/60/90 Success Plan 15 days: Local env ready; ship a small backend-led feature behind a flag; SonarQube green; dashboards wired. 45 days: Lead a medium backend feature; improve a pipeline step (caching/parallelism); add alert + runbook. 60 days: Own a service/domain; propose an ADR; measurably raise reliability/perf for a critical path.