Sr. Node.js Developer

Position Summary We are looking for a highly skilled Senior Node.js Backend Developer with deep expertise in designing scalable, high-performance backend systems. The ideal candidate will have hands-on experience in Generative AI (GenAI), working with large language models (LLMs), and be comfortable using modern AI-assisted development tools such as GitHub Copilot, Cursor, or similar intelligent editors. The role involves designing complex system architectures, optimizing databases (preferably MySQL), integrating third-party APIs and GenAI models, and collaborating with cross-functional teams to deliver intelligent, future-ready software solutions. Strategic Responsibilities Design and develop robust, scalable, and intelligent backend applications using Node.js and related framework. Work on GenAI-driven systems, integrating large language models (LLMs) and AI APIs into backend workflows. Utilize AI-assisted coding tools (e.g., Copilot, Cursor) to improve efficiency and maintain high code quality. Design, optimize, and maintain MySQL database schemas, ensuring scalability, performance, and data integrity. Architect complex backend systems, implementing microservices, event-driven designs, and distributed processing. Perform rigorous testing, including unit and integration testing, to ensure application stability and reliability. Debug and resolve technical issues, ensuring timely and sustainable solutions. Participate in code reviews to maintain code quality and promote knowledge sharing. Mentor junior developers and support team-wide technical growth. Perform market research and opportunity assessments on new concepts and ideas. Required Experience: 3–8 years of experience in backend development with a focus on Node.js and scalable system design. Hands-on experience with Generative AI (GenAI), LLMs (OpenAI, Gemini, Claude, etc.), and AI API integration. Proficiency in JavaScript and TypeScript, including asynchronous programming and performance optimization. Proficient in developing and consuming RESTful APIs . Solid understanding of version control systems, especially Git . Strong debugging, analytical, and problem-solving skills. Experience with TypeScript in a Node.js environment. Familiarity with Redis, RabbitMQ, or other caching/message-queue systems. Hands-on experience with Docker and container-based deployment. Familiarity with unit testing frameworks such as Mocha, Chai, or Jest. Knowledge of security best practices in backend development (e.g., OAuth2, JWT, SQL injection prevention). Basic understanding of frontend technologies (HTML, CSS, and JavaScript frameworks). Soft Skills: Excellent verbal and written communication skills. Ability to work both independently and collaboratively in a fast-paced, agile environment. About Polestar: As a data analytics and enterprise planning powerhouse, Polestar Analytics helps its customers bring out the most sophisticated insights from their data in a value-oriented manner. From analytics foundation to analytics innovation initiatives, we offer a comprehensive range of services that help businesses succeed with data. We have a geographic presence in the United States (Dallas, Manhattan, New York, Delaware), UK(London) & India (Delhi-NCR, Mumbai, Bangalore & Kolkata) and have 600+ people strong world-class team. We are growing at a rapid pace and plan to double our growth each year. This provides immense growth and learning opportunities for those who are choosing to work with Polestar. We hire from most of the Premier Undergrad and MBA institutes. We are serving customers across 20+ countries. Our expertise and deep passion for what we do has brought us many accolades. The list includes: - Recognized as the Top 50 Companies for Data Scientists in 2023 by AIM. Financial Times awarded Polestar as High-Growth Companies across Asia-Pacific for a 5th time in a row in 2023. Featured on the Economic Times India's Growth Champions in FY2023. Polestar Analytics Selected as a 2022 Red Herring Global Companies. Top Data Science Providers in India 2023: Penetration and Maturity (PeMa) Quadrant. India’s most promising data science companies in 2022 by Analytics Insight. Featured on Forrester's Now Tech: Customer Analytics Service Providers Report Q2, 2021. Recognized as Anaplan's India RSI Partner of the Year FY21. Elite Qlik Partner and a member of the ‘Qlik Partner Advisory Council’ & Microsoft Gold Partners for Data & Cloud Platforms Culture at Polestar. We have one of the most progressive people’s practices which are all aimed at enabling fast paced growth for those who deserve it.