Senior Lead Engineer

Position: Senior Lead Engineer (Node.js) Location: San Francisco, CA or Frisco, TX- Hybrid (3 Days Onsite, 2 Days Remote) Type: Contract Mandatory: (Retail/Ecommerce/Omnichannel- Domain Experience is Must) Mandatory Skills: • Strong expertise in Node.js and TypeScript for backend services. • Experience with Nest.js (preferred), Express, or Fastify frameworks. • Proven ability in production support, incident management, and root cause analysis. • Familiarity with API design (REST, GraphQL) and integration troubleshooting. • Knowledge of monitoring tools (Grafana, Prometheus, Datadog) for proactive issue detection. • Understanding of cloud environments (GCP preferred; AWS/Azure acceptable). Qualifications • Bachelor’s/Master’s in Computer Science or equivalent experience. • 5+ years in backend development with strong Node.js experience. • 2+ years in sustainment or production support roles. • Strong debugging and problem-solving skills. • Familiarity with cloud platforms (GCP preferred; AWS/Azure acceptable). Excellent communication and stakeholder management skills. Backend: • Node.js, TypeScript, Nest.js (preferred), Express, Fastify • BFF layer for React front-end integration • API Gateway and rate-limiting strategies API & Integration: • REST, GraphQL, Apollo, gRPC • Webhooks and third-party API integrations Cloud & Infrastructure: • GCP (primary), AWS/Azure knowledge is a plus • Docker, Kubernetes (GKE), Helm • Terraform for Infrastructure as Code Data Stores: • SQL: PostgreSQL, Cloud SQL • NoSQL: Firestore, MongoDB • Caching: Redis, Memorystore Monitoring & Observability: • Grafana, Prometheus, Datadog, Splunk • Cloud Logging & Cloud Monitoring CI/CD & DevOps: • GitLab CI, Jenkins pipelines • Canary releases, blue-green deployments Security: • OAuth2, JWT, API security best practices • Vulnerability scanning and patching