Sr. Full Stack Developer

Role Overview

• We are looking for a Backend-heavy Full Stack Engineer with 5-6 years of experience in building and maintaining production-grade applications using Node.js, React.js, Express.js, and Strapi.
• The candidate should have strong backend expertise, good knowledge of frontend development, APIs, databases, system design, security, performance, and production engineering.

Key Responsibilities

• Application Development Design, develop, test, and maintain scalable web applications using Node.js, React.js, Express.js, and Strapi.
• Build reusable, maintainable, and secure frontend/backend components and REST APIs.
• Customize and extend Strapi for enterprise content-management requirements.
• Develop responsive and accessible React.js interfaces.
• Participate in requirement analysis, solution design, development, testing, deployment, and code reviews.
• Node.js & Backend Engineering Design Node.js applications using layered, modular monolith, or service-based architectures.
• Strong understanding of event loop, asynchronous programming, Promises, async/await, streams, buffers, worker threads, memory management, error handling, and connection pooling.
• Implement API development, validation, authentication, authorization, logging, caching, rate limiting, timeouts, retries, security, documentation, and automated testing.
• Troubleshoot event-loop blocking, memory leaks, slow APIs, resource consumption, and application instability.
• High-Traffic Website Engineering Build applications capable of handling approximately 60 lakh requests/month with higher peak traffic.
• Develop stateless, horizontally scalable applications.
• Implement caching, CDN/reverse proxy, compression, asset/image optimization, API and database optimization, pagination, and connection pooling.
• Define timeout, retry, circuit-breaking, and graceful-degradation strategies.
• Participate in load, stress, endurance, and capacity testing and resolve performance bottlenecks.
• Strapi & Content Management Configure, customize, upgrade, and maintain Strapi-based headless CMS solutions.
• Design content types, components, relationships, workflows, and publishing models.
• Develop custom controllers, services, middleware, routes, policies, and plugins.
• Implement RBAC, secure CMS interfaces, media management, versioning, approval workflows, localization, scheduled publishing, and rollback.
• Integrate Strapi APIs with React applications.
• React.js Frontend Development Develop reusable React components using JavaScript/TypeScript.
• Work with React Hooks, routing, state management, forms, and API integration.
• Optimize frontend performance through code splitting, lazy loading, memoization, bundle optimization, and caching.
• Ensure responsive, accessible, SEO-friendly, and cross-browser-compatible applications.
• Handle API failures, validation errors, loading states, and degraded services effectively.
• Observability
• OpenTelemetry Instrument Node.js and frontend applications using OpenTelemetry.
• Implement distributed tracing, metrics, and structured log correlation.
• Monitor request rate, error rate, latency, resource usage, event-loop delay, memory, API, and database performance.
• Use telemetry for production troubleshooting and root-cause analysis while protecting sensitive information.
• Kubernetes Application Development Prepare applications for Kubernetes-based deployment.
• Maintain Kubernetes manifests/Helm configurations and configure Deployments, Services, Ingress, ConfigMaps, Secrets, probes, resource limits, HPA, and rolling updates.
• Ensure graceful startup/shutdown and troubleshoot common Kubernetes issues such as pod restarts, probe failures, OOM, CPU throttling, configuration, DNS, and connectivity issues.
• Work with DevOps/platform teams on deployments, scaling, and releases.
• Cluster administration is not mandatory.
• Security & Compliance Follow secure coding practices and address common web/API vulnerabilities.
• Implement input validation, output encoding, security headers, rate limiting, authentication, authorization, and audit logging.
• Secure secrets, credentials, tokens, and certificates.
• Address findings from SAST, DAST, SCA, penetration testing, and security reviews.
• Maintain secure and supported application dependencies.
• Production Support & Engineering Excellence Monitor production health, troubleshoot incidents, and perform root-cause analysis.
• Analyse logs, metrics, and traces to identify application/dependency failures.
• Maintain technical and operational documentation.
• Develop unit, integration, API, security, and E2E tests.
• Contribute to CI/CD, automated quality gates, releases, rollbacks, and production validation.
• Mentor junior developers and promote engineering best practices.

Mandatory Technical Skills

• 5-6 years of relevant software-development experience.
• Strong hands-on experience with Node.js, React.js, Express.js, Strapi, and JavaScript ES6+.
• Good knowledge of TypeScript and Node.js internals.
• Strong experience developing and securing REST APIs.
• Knowledge of HTML5, CSS3, responsive design, and browser tools.
• Practical experience with OpenTelemetry and Kubernetes-based environments.
• Experience with Docker, relational/document databases, Redis, Git, automated testing, and CI/CD pipelines.
• Strong understanding of application security, performance tuning, and production troubleshooting.