Senior Full Stack Developer – AI Product (m/f/d) | Remote from Croatia

Deine Rolle: Want to do more than just write code? At Cito, we're building CERA AI – an AI agent that automates real logistics processes: from processing incoming emails and negotiating prices to transferring transport orders. Real processes. Real customers. Real impact. Deine Mission bei uns: • Take ownership of key parts of our AI and software architecture • Design and develop scalable AI agent systems, including multi-step reasoning, decision pipelines and tool use • Build and improve our LLM-based systems, including prompting, tooling, memory and orchestration • Ensure reliability and quality of AI outputs through evaluation, monitoring and guardrails • Build observability and evaluation frameworks, including regression testing for AI systems • Work closely with Product and Business to turn real operational problems into scalable technical solutions • Make technical decisions with long-term impact on architecture, stack and scalability • Ship solutions that are actually used by customers Damit passt du zu uns: • 6–8+ years of experience in software engineering • Ideally, hands-on experience building AI/LLM-based products or systems • Strong Python skills, ideally with Django or a comparable framework • Experience working with LLM APIs such as OpenAI, Claude or similar • Understanding of AI system design beyond simply integrating an API • Experience with evaluation methods, monitoring and observability • Ability to think in systems rather than individual features • Strong understanding of the trade-offs between speed, reliability and quality • High level of ownership and ability to work independently • A pragmatic mindset: you like building, shipping and improving real products • Professional working proficiency in English Darauf kannst du dich freuen: • Work 100% remotely from Croatia Stay in Croatia – no relocation to Germany required. Join a German tech company Become part of an international team building technology for the European logistics market. Build a real AI product This isn't an AI side project or prototype. You'll work on an AI system that automates real business processes for real customers. High technical ownership We don't want someone who simply works through a backlog. You'll have room to shape architecture, technology and the future of the product. Impact over bureaucracy We're a fast-moving team where technical decisions don't disappear behind multiple layers of approval. Long-term collaboration We're looking for someone who wants to become an integral part of our team – not a short-term outsourcing resource. Über uns Wir sind Cito – ein Technologieunternehmen, das mit CERA AI einen KI-Agenten entwickelt, die operative Prozesse in der Logistik automatisiert und manuelle Disposition durch intelligente, datenbasierte Entscheidungen ersetzt – für mehr Effizienz, Geschwindigkeit und Skalierbarkeit.