Senior Fullstack Engineer (Frontend)

Senior Full Stack Engineer / Hybrid (Boston, MA) Are you passionate about building tech that directly supports climate action and sustainability? A mission-driven climate tech startup is seeking an experienced Senior Full Stack Engineer to help scale its next-generation geospatial platform. The company delivers groundbreaking insights into nature-based carbon solutions, supporting global efforts toward a net-zero, nature-positive economy. As a Senior Full Stack Engineer, you will be instrumental in developing and expanding a customer-facing web application that delivers powerful, actionable data. You’ll work closely with both technical and commercial teams, blending frontend usability with backend scalability in service of high-impact environmental goals. Design, develop, and maintain a geospatial web platform and API delivering actionable insights to enterprise users Contribute to the architecture of a scalable, performant, and modern full-stack application Collaborate with a cross-functional team to translate customer needs into polished features Support customers directly by troubleshooting technical issues related to the API or platform Use agile practices and participate in regular team planning, reviews, and code sessions 5+ years of full-stack engineering experience ~ Proficiency in Python , JavaScript, HTML, and CSS ~ Strong grasp of modern web architecture, APIs, databases, and deployment pipelines ~ Bachelor's degree in Computer Science or equivalent work experience ~ Must be a US Citizen or Green Card Holder Bonus Points For: • Experience with web mapping libraries like Mapbox GL or Leaflet • Familiarity with cloud services ( AWS preferred) and infrastructure deployment • Passion for climate tech, geospatial data, or nature-based solutions Opportunity to work at the intersection of AI, remote sensing, and sustainability • Hybrid work model: 2 days/week onsite at the Boston HQ , with flexibility for remote work • Collaborative, transatlantic team focused on real-world environmental impact