Senior Full Stack Developer (Frontend- or Backend-Focused)

About Carbonfuture 

Carbonfuture is the Trust Infrastructure for durable carbon removal. Today, the Trust Infrastructure consists of two products that seamlessly connect the entire carbon removal lifecycle: Carbonfuture MRV+, the most comprehensive MRV solution for durable CDR, and Carbonfuture Marketplace, the leading marketplace for durable CDR. At Carbonfuture, we build trust throughout the carbon removal journey with our rigorous, data-driven approach, ensuring unmatched quality and reliability of carbon removal. We empower suppliers by providing the essential project support and finance needed to transform their carbon removal projects into fully certified carbon credits. For corporate buyers, we offer access to portfolios of carbon removal credits adhering to the highest quality standards and provide visibility at each step of the carbon removal lifecycle via data-driven transparency enabled by Carbonfuture MRV+. We work with some of the world's most ambitious climate leaders such as Microsoft, Swiss Re, and the World Economic Forum First Movers Coalition.

Your role & responsibilities:

We're looking for a motivated Senior Full Stack Developer — with either a frontend- or backend focus — to help us build and evolve the digital backbone of our climate solutions. You’ll be a key player in crafting intuitive, performant, and visually engaging user experiences — while also contributing across the stack, from APIs to integrations. If you love turning complex workflows into elegant user experiences and care deeply about user-centric product development, this might be your role. 

From day one, you’ll collaborate directly with our CTO and agile product team, with plenty of ownership, room to grow, and a real impact on how we design and deliver software that matters. 

What you'll do:

• Drive the development of engaging, scalable features for our MRV+ (Measurement, Reporting, Verification) and carbon marketplace platforms. 
• Collaborate closely with product managers, designers, and other developers to bring reliable and scalable software to production. 
• Engage directly with customers and domain experts to understand requirements and iterate rapidly on solutions. 
• Translate complex product and data requirements into extensible and modular code, crafting clean APIs, handling backend logic, and integrating new services, to support intuitive UI components and user flows. 
• Participate in and lead architectural and system design discussions. 
• Support DevOps, CI/CD, and post-deployment improvements. 
• Contribute across the tech stack, when needed. 
• Mentor junior developers and coordinate the delivery of mid-sized to large-scale initiatives.

What you bring to the table:

• 5+ years of experience building production-ready web applications across the frontend and backend. 
• Strong passion for crafting scalable, performant, and extensible systems. 
• Solid understanding of software architecture and collaborative development workflows (Git, code reviews, etc.). 
• High degree of autonomy, creativity, and intrinsic motivation. 
• Excited to dive into new business domains and solve real-world problems. 
• Great command of English (German is a plus). 
• You must be in, or willing to work in, CET time zone. 
• Open to occasional travel. 

Required for frontend focus:

• Strong passion for crafting beautiful, responsive, and accessible user interfaces. 
• Strong experience with React (or similar frontend frameworks), HTML/CSS, and modern JavaScript/TypeScript practices. 
• Comfortable working with backend technologies like Java, Spring Boot, Hibernate, and SQL when needed. 

Required for backend focus:

• Strong experience with backend technologies like Java, Spring Boot, Hibernate, and SQL. 
• Comfortable working with React (or similar frontend frameworks), HTML/CSS, and modern JavaScript/TypeScript