Senior Full Stack Engineer (MERN/ Python)

Job Title: Senior Full Stack Engineer (MERN/ Python) Company: Codewinglet Pvt Ltd Location: Surat, Gujarat (M ust be based in Surat or willing to relocate) Work Mode: Work from Office (WFO) Experience: 2-4 Years Employment Type: Full-time About Codewinglet Codewinglet Pvt. Ltd. is an AI-first engineering company building modern software products and solutions across AI, web, backend, and cloud technologies. We are looking for a Senior Full Stack Engineer from either a MERN or Python background who can own the building, improvement, and maintenance of scalable web applications across the Frontend, Backend, API, and Database layers. This role suits someone who enjoys solving complex technical problems, can own features independently from development to delivery, and wants to work closely with developers, QA, product, and engineering teams. Key Responsibilities Design, develop, and maintain scalable web applications using the MERN stack or Python-based stacks (Django / FastAPI / Flask with React.js). Own features and modules end-to-end, from requirement understanding and implementation to testing, deployment, and maintenance. Build responsive, reusable, high-performance UIs using React.js / Next.js with TypeScript. Develop secure, scalable backend services and RESTful APIs using Node.js/Express.js or Python frameworks. Design and optimize data models, queries, and indexes across MongoDB, PostgreSQL, and Redis. Integrate frontend applications with backend services, third-party APIs, and AI/LLM capabilities. Containerize applications with Docker and maintain CI/CD pipelines on cloud platforms. Write unit and integration tests to keep code reliable. Debug and resolve bugs, performance bottlenecks, and production issues. Conduct code reviews and give constructive technical feedback. Work in Agile/Scrum with QA, Project Managers, and other engineering teams to plan and deliver features. Contribute to technical discussions and implementation and design decisions. Guide junior developers through code reviews and knowledge sharing. Keep up with relevant technologies and help improve development practices. Must-Have Skills and Qualifications 2–4 years of hands-on Full Stack Web Development experience. Strong expertise in at least one stack: MERN: MongoDB, Express.js, React.js, Node.js, OR Python: Django / FastAPI / Flask with React.js Strong React.js skills: components, hooks, state management, reusable UI development. Hands-on experience with TypeScript and Next.js (or another modern React framework). Good understanding of MongoDB and PostgreSQL , plus working experience with Redis . Experience developing and integrating RESTful APIs. Exposure to AI/LLM integrations or AI-powered applications. Working knowledge of Docker and CI/CD practices. Experience with at least one cloud platform: AWS, Azure, or GCP . Experience writing unit and integration tests . Experience working in Agile/Scrum teams. …