Senior Fullstack Engineer (m/f/d) - Berlin

Your Mission

• You will collaborate on the design, development, deployment and maintenance of our web application, utilising modern technologies while adhering to industry best practices
• You will work autonomously and contribute to architectural decisions alongside your team
• Collaborate with cross-functional teams to build impactful solutions for the climate sector
• Improve development workflow and contribute to building an efficient, high-performance engineering culture
• Leverage AI coding tools as a core part of your development workflow to ship faster and maintain high code quality

Your Talent

• You have at least 5+ years of software development experience
• Strong expertise in Python, FastAPI, React, Redux Toolkit, and TanStack Router
• Comfort using AI coding tools to accelerate development
• Experience building AI-powered features
• Experience in developing complex forms using react-hook-form and zod while ensuring a responsive and frictionless user journey
• Proficiency in Tailwind CSS and modern UI development practices
• You can evaluate what’s hype versus what’s real business value
• You have a good understanding of Docker, AWS and cloud native architecture
• You have experience debugging and resolving production issues
• You have led large complex projects from beginning to end
• You have excellent communication skills in English, and experience with distributed teams is a plus

Our Offer

Growth & Culture We move fast, we're building a lot from scratch, and we're learning something new every day. You'll be part of a team that doesn't just work, it truly builds something, with a strong sense of ownership and genuine team spirit.

Impact Your job has a direct impact on the energy transition. Period. And because this is important to us, we offer extra days off for climate activism.

Flexibility We work in a hybrid, trust-based environment. Working from home is the norm for us, two days a week are standard and flexible. We structure the rest in whatever way best supports collaboration and focus within the team. And if it works for you and your team, you can also work from other locations, workations are possible here.

Perks You'll receive a flexible bonus that you can use however you like, sports, culture, travel, whatever works for you.

Food & Energy Long days happen. When the office is running, so is the food: just order something to the office via Wolt.

Team & Vibe We take our mission seriously, but we don't take ourselves too seriously. Offsites, team nights, and our "Bees & Beers" are just as much a part of the job as the work itself.