• Design and implement RESTful and GraphQL APIs in Node.js and Java/Spring Boot • Document with Swagger and test with Postman • Build event‑driven services and consumers/producers on Apache Kafka • Deliver microservices with clear domain boundaries, API versioning, and backward compatibility • Ship accessible, performant UI with React and Next.js (SSR/SSG, routing, caching) • Build reusable front end components; author maintainable styles with CSS/SCSS • Integrate front‑end apps with GraphQL clients and Content Management System like Adobe Experience Manager • Deploy to Azure/GCP; considering observability (logs, metrics, traces), feature flags and manage secrets securely • Partner with security on VITS remediation, dependency vulnerability scanning (SCA), static/dynamic testing (SAST/DAST), and OWASP best practices • Uphold engineering excellence with unit/integration/contract tests (JUnit, Mockito, Jest), performance profiling, and SonarQube quality gates • Model and query data across PostgreSQL and NoSQL; own schema evolution, migrations, and performance tuning