Senior Backend Engineer - AI Agents - Climate Tech (all genders)

As a Senior Backend Engineer - AI Agents (m/f/d), you will shape how AI is used in our Corporate Carbon Footprint (CCF) and Product Carbon Footprint (PCF) workflows.

• Designing and implementing agent-based LLM systems (tool calling, orchestration)
• Applying RAG to ground AI outputs in internal data
• Defining evaluation, quality control patterns and uncertainty signals for AI-generated results (e.g. LLM-as-a-judge)
• Combining AI-driven logic with rule-based mechanisms for reproducibility
• Making informed trade-offs between accuracy, cost, latency and reliability in production

You will work on a solution with a clear goal: helping companies reduce emissions faster. We focus on one of the biggest levers to fight the climate crisis and work mainly with large organisations.

• 5+ years of experience in backend software development
• Strong Python skills
• Proven track in agent development in a professional environment
• Strong familiarity with agent frameworks, technologies and techniques (RAG, tool-calling, function-calling, agent design patterns)
• Experience balancing performance, cost and accuracy in production environments
• Fluent in English, clear written and verbal communication (German is a plus)
• You live in the EU (CET ±1) with a valid work permit
• You are passionate about the fight against the climate crisis and creating customer-oriented solutions that deliver real added value
• Startup or scale-up experience

• Creating long-lasting software with a positive impact - we are here to stay
• Play a decisive role in shaping our product and corporate culture
• A mission that drives us every day
• Fair compensation (first order of magnitude: around € 70,000 - 80,000 gross depending on experience)
• 28 vacation days and flexible vacation planning (you don't have to plan your entire vacation at the beginning of the year)
• Flexible working hours - family-friendly :)
• 100% remote is possible - work from your preferred location
• Freedom to contribute to the open source community
• Teamevents

At Global Changer, you will work on a solution with a clear goal: helping companies reduce emissions faster. We focus on one of the biggest levers to fight the climate crisis and work mainly with large organisations.