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. About us

At Bees & Bears , we’re a Climate FinTech on a mission to unlock capital for the energy transition. We believe finance is the key to accelerating the shift toward a sustainable future. The challenge ahead is massive: by 2050, the world needs to invest €150 trillion (!) to reach climate neutrality. 65% of this investment will need to be financed through loans.

Our mission is to channel capital into the sustainable economy — to accelerate the transition and make the world greener.

What we do:

We work closely with installers of climate hardware such as solar systems, energy storage, and heat pumps — enabling their customers to finance installations easily through monthly installments . Our platform provides the technical and financial foundation to make this happen. In doing so, we’re actively accelerating the energy transition — for households, for our partners, and for the planet.

We’ve recently secured €500 million in funding commitments to green 25,000 households over the next two years. Prior to that, we raised two funding rounds backed by several renowned VCs — and we’ve been growing rapidly ever since.

Sound like the perfect job for you?
We look forward to your application and to getting to know you!

At Bees & Bears, we place a high value on equal opportunity and are committed to fostering a diverse and inclusive work environment. We strive to create a friendly, safe, and welcoming environment for all our employees, regardless of ethnic origin, gender, gender identity and expression, sexual orientation, disability and abilities of any kind, physical appearance, social background, marital status, age, or religion (or lack thereof).

Even if you don’t meet the requirements 100%, we still encourage you to apply.

You don’t want an ordinary job. You want to build something that truly matters. Be part of shaping it from day one, move fast and feel your impact. In a startup that doesn’t ask if something is possible – but how fast . Then you’ve come to the right place!