Tech Lead- Frontend

Job Description

Location: Noida (Work from Office) Type: Full-Time Experience: 5?7 years Company: Sustainiam Education: B.Tech/M.Tech from a top-tier engineering college (IIT/NIT/IIIT or equivalent) About Sustainiam At Sustainiam, we?re enabling the climate transition through data-backed, tech-enabled sustainability solutions. We work with enterprises to help them measure, reduce, and offset their carbon emissions with real-world impact. As a fast-growing climate-tech company, we combine environmental expertise with sharp execution to drive results that matter. Role Overview We are looking for a Frontend Tech Lead who is a strong hands-on engineer with solid leadership abilities. You will lead the technical direction of our frontend stack, own key architectural decisions, and ensure we ship fast, reliable, and scalable user interfaces. You?ll be expected to write production-grade code, guide other engineers technically, and work closely with Product, Design, and Backend teams to deliver high-quality user experiences. What You?ll Do Lead the technical direction of the frontend team and own critical UI components and modules. Stay hands-on: architect, design, and develop high-performance UIs using ReactJS and Tailwind CSS. Define and enforce coding standards, best practices, and reusable patterns across the frontend codebase. Collaborate with Product, Design, and Backend teams to deliver delightful, high-quality user experiences. Optimize frontend performance?bundling, caching, lazy loading, code-splitting, and CDN strategies. Drive technical design discussions, estimations, and sprint-level planning from an engineering perspective. Conduct thorough code reviews, provide technical mentorship, and help level up the team. Set up and improve frontend observability?analytics, monitoring, logging, and error tracking. Contribute to hiring, onboarding, and technical evaluation of frontend engineers. Required Skills 5?7 years of frontend engineering experience with at least 1?2 years in a tech lead / senior engineer role (ownership of modules, mentoring, or leading small teams). B.Tech/M.Tech from a Tier-1/Tier-2 college (IIT/IIIT/NIT, etc.) OR experience in leading product companies. Deep expertise in ReactJS (hooks, component architecture, state management). Strong command of modern UI development using Tailwind CSS. Strong fundamentals in data structures, problem-solving, and frontend system design. Proven experience optimizing performance for large-scale or high-traffic applications. Hands-on experience with CDN integration, caching strategies, and frontend deployment pipelines. Solid understanding of browser internals, rendering lifecycle, and performance/debugging tools. Excellent communication skills and ability to work closely with cross-functional stakeholders. Nice to Have Experience with TypeScript. Exposure to micro-frontend architectures. Experience in fintech or security-focused products. Familiarity with design systems and accessibility standards (a11y). Passion for climate-tech or sustainability-focused products. Why Join Us Take end-to-end ownership of frontend architecture and technical direction. Work on complex, impactful problems in climate-tech with real-world outcomes. Competitive compensation + ESOPs. Work directly with founders and senior leadership on a mission-driven product. Opportunity to help shape the frontend engineering culture and best practices in a high-growth setup. Perks & Benefits Culture & Celebrations Fun Fridays, monthly team parties, and festival celebrations. Recognition for contributions and milestones. Financial & Lifestyle Benefits Medical insurance for self and family. Meal pass and daycare facilities. ESOPs so you own a stake in our mission. Upskilling budget and flexible benefits plan. Air travel accident coverage and personal accident insurance. Wellness programs including GOQii support and gym access. Office & Facilities On-site gym and game zones. Access to cricket, tennis, and badminton courts. Creche and food outlets on campus.