Senior Full Stack Engineer (Remote - DE/UK/PT)

• Take responsibility for the full software development lifecycle, i.e. you design, implement, test, QA, deploy and maintain new and existing features.
• Contribute to improving the Cozero product by being a sparring partner to our product managers.
• Make architecture decisions as a key member of our engineering team.
• Participate in discussions on how to maintain and improve our micro-service architecture.
• Work closely with our other engineers to identify and mitigate tech debt.
• Contribute to driving technical innovation and finding sustainable solutions for technical challenges such as:

• Upscaling every part of the application to be able to process large amounts of data.
• Further developing the setup for data pipelines and data warehousing to enable near-real-time data processing and generation of insights.
• Driving the integration of AI solutions together with our data team., * Real impact - Your work directly reduces carbon emissions at scale. Not theoretical, actual tons of CO2.

• Right timing - Series A funded (€6.5M from Kvanted and ENV), growing fast, working with enterprise customers who trust us with their decarbonization journey.
• Exceptional team - Work directly with our founders Helen, Fabian, and Tiago. Multicultural, collaborative, and actually passionate about climate action-not just talking about it.
• You'll grow fast - Flat hierarchy. Your ideas ship. Direct impact on product and strategy.

Do you have experience in SDLC?, * You bring 5+ years of relevant hands-on experience in product development across our stack, including Frontend (React, Redux), Backend (NestJS), and Data (PostgreSQL).

• You write well-structured and high-quality code that's easily maintainable by others.
• You are curious about new technologies including AI, and ideally bring some experience on how to use AI to make the development process more efficient.
• You are passionate about ClimateTech and have a strong commitment to fighting climate change.
• You are self-driven and capable of working with minimal supervision.
• You are fluent in English with excellent written and spoken communication skills.

• 27 vacation days + 1 day life event leave (Wedding, Birth of child etc.)
• 500 EUR annual learning and development budget
• 500 EUR one-time home office setup
• 100 EUR monthly coworking budget (for those outside Berlin headquarters)
• VSOP (Virtual Stock Options) - share in Cozero's success
• Regular team events every year

Do you want to be part of one of Europe's fastest-growing climate tech startups? We are looking for a Senior Full Stack Engineer with a strong growth mindset to tackle the day-to-day challenges of building and growing a business. In this unique role, you'll be a hands-on product engineer, using our state-of-the-art tech stack to solve real user problems that will positively impact the sustainability of our climate. If you're excited about building an economy where every company creates an impact for a sustainable world and empowering companies to decarbonize and boost their business performance, we'd love to hear from you! We are open to hiring fully remotely for this role but require you to be located in one of the following countries: Germany, United Kingdom or Portugal.