Full Stack Engineer

Role SummaryWe’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.