Senior Software Development Engineer (MERN Stack)

Senior Software Development Engineer (MERN Stack) Location: Noida (Work from Office) Type: Full-Time Company: Sustainiam Seniority Level: Senior Compensation: Industry-Leading Salary About Sustainiam At Sustainiam, we re building tech that powers the climate transition. Our mission? Help businesses reduce their carbon footprint with intelligent, data-driven products that make sustainability practical, measurable, and impactful. If youre passionate about clean tech, solving real-world problems, and writing top-notch code this is the place for you. About the Role We re looking for a Senior Software Development Engineer (MERN) to join our growing engineering team. Whether youre frontend-heavy, backend-heavy, or full-stack - we re open, as long as you bring depth in your area and a willingness to collaborate across the stack. You ll work on scalable, secure, and high-performance web applications and be part of an engineering culture that values impact, learning, and clean code. What You ll Be Doing Frontend-Focused? You Might Be: Building intuitive, responsive, and beautiful user interfaces using React.js Translating complex UI/UX designs into scalable and pixel-perfect code Optimizing performance, accessibility, and responsiveness across devices Collaborating closely with design and product to craft seamless user experiences Backend-Focused? You Might Be: Designing and building robust RESTful APIs with Node.js and Express.js Architecting secure and efficient databases with MongoDB , including performance tuning Implementing real-time capabilities, authentication, and scalable backend systems Managing cloud deployments and infrastructure using AWS , GCP , or Azure Full-Stack? Even Better: Bridging the frontend and backend to create cohesive end-to-end solutions Leading integration efforts, debugging across the stack, and improving overall architecture Contributing to CI/CD, testing, and production monitoring Supporting project delivery from idea to live product Who We re Looking For You re an experienced developer who s passionate about building systems that are both elegant and effective. You re collaborative, curious, and ready to take ownership of real-world challenges in sustainability tech. You likely have: 4-6 years of professional experience in the MERN stack (MongoDB, Express.js, React.js, Node.js) Strong proficiency in JavaScript (ES6+) , and either frontend (React.js) or backend (Node.js, MongoDB) development Experience with API design, performance tuning, and system architecture Familiarity with Git, modern dev workflows, and testing tools (Jest, Mocha, Cypress) Strong problem-solving and debugging skills Excellent communication and team collaboration abilities Bonus Points For: TypeScript experience Docker, Kubernetes, or other containerized dev workflows GraphQL, WebSockets, or real-time data pipelines CI/CD automation and DevOps practices Familiarity with serverless architecture or microservices What You ll Gain A senior role in a fast-growing, mission-driven climate tech company The chance to specialize, lead, and collaborate in a dynamic tech-first environment Ownership of impactful products that directly support climate action Opportunities to grow your skills and take on leadership responsibilities A culture where innovation, autonomy, and learning are encouraged Perks, Perks, and Did We Mention Perks? Sustainiam isn t just a workplace - it s a vibe . Heres what you can expect: Culture & Celebrations Fun Fridays (games, laughs, random surprises) Monthly Party Hard day (no, seriously, we go all out) Birthday & anniversary celebrations - always remembered, always special Every festival = full-on celebration, food included Shoutouts and recognitions, because effort deserves applause Financial Goodies Early salary access - twice a year (we got you) Loans up to 1,00,000 with 0% interest for 45 days Office Goals Game zone (PS Station, anyone?) Gym - break a sweat after breaking records Cricket, tennis, badminton courts - yes, really Ready to build tech that fights climate change? We d love to hear from you.