German nice-to-have
Engineering
Full Stack
Mid-Level
Hybrid
Summary
Fullstack & AI Software Engineer to drive the AI roadmap, integrating LLM APIs and agentic systems. Requires strong Kotlin/JVM and Python skills, with hands-on LLM API integration experience. The role focuses on building end-to-end features for an energy transition tech company.
- Location
- Berlin
- Type
- full-time
- Level
- Mid-Level
- Work mode
- hybrid
Deine Aufgaben
- End-to-End Feature Development: You build and own product features from scratch, moving confidently between our backend (Kotlin/Spring Boot) and frontend (React)
- AI Implementation: You are the driver for our AI roadmap. You integrate LLM APIs (OpenAI, Gemini, Anthropic) and transform them into real-world product value
- Agentic Systems & Workflows: You design and implement advanced agentic patterns, including tool/function calling, ReAct loops, multi-step orchestration, and intelligent memory systems
- Collaborative Engineering: You work closely with our Data Engineer on data-to-product integration and contribute to our CI/CD pipelines to ensure high-quality deployments
- Security & Reliability: You implement security best practices, with a specific focus on prompt injection defense, output validation, and data privacy
Dein Profil
- JVM & Python Proficiency: You are experienced - or have a strong desire to make it your primary language -in Kotlin/JVM (Spring Boot, Hibernate) and you are solid in Python (FastAPI)
- AI Expertise: You have Hands-On experience integrating LLM APIs into live products. You understand RAG, context management, and reasoning patterns. Experience with LangGraph is a big plus
- Tech Stack Foundations: You are comfortable with PostgreSQL and have basic knowledge of TypeScript (React/Redux) - Familiarity with GCP is an advantage
- Security Mindset: You build with a "security-first" approach (OWASP Top 10) and understand the unique challenges of LLM-based applications.
- Language: Strong English is mandatory - Proficient German skills are a plus
Warum wir?
- Startup Culture: Fast, dynamic, and with enormous scope for making a real impact alongside the founding team
- Attractive Compensation: We offer an attractive salary package
- Flexibility: You value the flexibility of remote work but are excited to join us in the Berlin office as well
- Benefit Program and Team Offsites, Office Parties and Team working days
- Development: We provide an unique professional development approach as well as a broad network of mentors
- Impact Doesn't Get Bigger Than This: Your work directly contributes to saving millions of tons of CO2 + public money and accelerating the energy transition in Germany
Software Engineer - Fullstack & AI (m/w/d)
admi · Berlin