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. WrkTalk
