Lead - Backend Developer

Job Description

Job Title: Backend Developer - Lead Company: WrkTalk DigiSec AI Pvt Ltd Location: Juinagar, Navi Mumbai (On-site) Employment Type: Full-Time | Senior-Level Position Overview: We are looking for a Lead - Backend Developer to take full ownership of our backend systems—driving architecture, development, and cross-functional collaboration. This is a hands-on leadership role where you'll build scalable, secure systems, guide technical decisions, and mentor a growing team as we scale Key Responsibilities: ● Own the real-time communication backend powering enterprise messaging, voice, and video calling systems. ● Lead microservices architecture across multiple services and repositories using Node.js (TypeScript), Express.js, and NestJS. ● Optimize real-time performance ensuring low-latency communication and seamless scaling for enterprise deployments. ● Design scalable messaging systems with pub/sub patterns, queue management, and session handling. ● Lead and mentor a team of 5+ backend engineers through technical challenges, code reviews, and architectural decisions. ● Work hand-in-hand with product manager, design, and frontend teams to ship features that are fast, secure, and reliable. ● Write clean, well-tested code and help define engineering best practices across the stack. ● Manage containerized deployments using Docker and Kubernetes for on-premise client environments. ● Design database schemas, manage integrations, and optimize performance across SQL and NoSQL databases (e.g., MongoDB, MySQL). ● Optimize database performance, scale services, and improve reliability as our user base grows. ● Establish and enforce engineering best practices around code quality, testing, version control, and CI/CD. ● Monitor and improve system health using observability tools (e.g., logs, metrics, alerts). ● Ensure application reliability through automated testing, logging, and monitoring. ● Troubleshoot complex production issues across diverse client environments and infrastructure setups. ● Maintain clear, up-to-date technical documentation for APIs, system architecture, Deployment guides to support team-wide clarity and client-specific configurations. ● Maintain technical documentation for APIs, deployment guides, and client-specific configurations. ● Mentor junior engineers, lead by example, and contribute to building a high-performance engineering culture. ● Evaluate and integrate new technologies, tools, and patterns to improve backend systems and team efficiency. ● Stay current with the latest trends and best practices in backend development and bring innovation to projects. Required Skills & Qualifications: ● Bachelor’s degree in computer science, Engineering, or a related field. ● 6+ years of experience building scalable backend services using Node.js/Nest.js. ● Deep expertise in asynchronous programming, event-driven architecture, and design patterns. ● Proficient in designing and integrating RESTful APIs, web services, and backend libraries. ● Strong command over MongoDB, Postgres, or similar relational/NoSQL databases. ● Familiarity with Docker, Git, Postman, and API documentation tools (e.g., JSdocs, Swagger). ● Solid understanding of frontend fundamentals (HTML5, CSS3, JavaScript) to collaborate across the stack. ● Experience with cloud platforms (e.g., AWS, GCP, Azure) and CLI operations. ● Competence in test-driven development, writing unit/integration tests, and working in Agile environments. ● Excellent problem-solving and communication skills; capable of translating complex requirements into elegant code. ● Ability to work independently and drive projects while mentoring junior team members. What We Offer: ● A performance-driven and innovation-centric environment with rapid career advancement. ● Technical leadership opportunities and exposure to a wide range of modern tech stacks. ● High-ownership role with influence over product and tech decisions. ● Dynamic, collaborative, and fast-paced work environment. ● Direct collaboration with founders and senior leadership of WrkTalk. ● Collaborative, start-up-style culture that rewards initiative, creativity, and ownership.