(Senior) AI Engineer – AI Booster Team (f|m|d)

<p>At idealo, Generative AI (GenAI) is becoming a multiplier across every team. The AI Booster Team is our internal technical competence center: we pair with product teams, build reusable GenAI building blocks and share best practices company-wide. As an AI Engineer, you will design, prototype and productionise LLM-powered solutions that shorten the path from idea to first release while coaching fellow engineers on their GenAI journey.</p><p></p><p>This position is available full-time or part-time.</p><p></p><h3><span>About your new role</span></h3><ul><li><p>Pair with cross-functional teams to ship GenAI features – from discovery workshop to live deployment in weeks, not months.</p></li><li><p>Design and implement LLM workflows: prompt templates, RAG pipelines, evaluation harnesses and scalable AWS infrastructure (Bedrock, SageMaker, Lambda, Step Functions).</p></li><li><p>Apply your expertise in frontend technologies such as TypeScript, React, and <a href="http://Next.js" rel="noopener" target="_blank">Next.js</a> to build engaging interfaces, while leveraging Python to develop robust LLM-powered backends and evolving prototypes into reliable, production-ready services.</p></li><li><p>Establish automated evals and human-in-the-loop reviews that measure quality, safety and cost efficiency.</p></li><li><p>Harvest recurring patterns into platform components (e.g. content-generation pipelines, vector-DB utilities) and document them in our internal playbooks.</p></li><li><p>Act as a coach &amp; multiplier - run office hours, code reviews and lightning talks that level-up GenAI skills across idealo.</p></li></ul><p></p><h3><span>Skills &amp; Requirements</span></h3><ul><li><p>Professional software background and 3+ years building production systems; 1+ year hands-on with LLMs.</p></li><li><p>Proven experience with LLM stacks: prompt engineering, embeddings &amp; vector DBs , LangChain/LlamaIndex, RAG design, model selection &amp; cost optimisation.</p></li><li><p>Practical knowledge of LLM workflow orchestration and process automation tools (e.g., n8n) for end‑to‑end automation.</p></li><li><p>Proficient in Python and TypeScript, using modern frameworks like FastAPI, Node.js, and React to create scalable backends and seamless user experiences.</p></li><li><p>Comfortable running ML workloads on AWS (SageMaker, Bedrock, Lambda, Step Functions, CDK/Terraform).</p></li><li><p>Familiar with CI/CD, Docker, test-driven development and observability (logs, traces, cost dashboards).</p></li><li><p>Strong communication skills for pair-programming and technical coaching.</p></li><li><p>We’re keen to see evidence of exceptional achievement - perhaps you’ve scaled a personal project to thousands of users, published influential research, ranked highly in competitive arenas (e.g. sports, Kaggle, hackathons) or maintain widely-used open-source libraries. Tell us what makes you stand out!</p></li></ul><p></p><p>You don’t tick every single box? No worries! We hire people, not checklists, and value motivation to grow.</p><p></p> <h3>Requirements</h3> <h3><strong><span>At idealo you can expect</span></strong></h3><ul><li><p><strong><span>You need vacation?</span></strong><span> We offer you 30 days of vacation.</span><strong><span> Not enough? </span></strong><span>You can "buy" an additional 15 days every year by converting your salary and it's seen as a positive thing.</span></p></li><li><p><strong><span>You want to further your education?</span></strong><span> We take your personal development goals seriously and, in addition to our idealo Learning Hub, eLearning offerings (e.g., Udemy), coaching &amp; mediation, we also offer you the opportunity to benefit individually from additional learning and development budget.</span></p></li><li><p><strong><span>And what about the office? </span></strong><span>Our office in the heart of Berlin offers free organic breakfast, excellent free lunch (vegan and vegetarian), as well as free coffee, lemonades and after-work beer, in addition to the "standard foosball". It also has a fabulous rooftop terrace with view of the whole of berlin where you can network with colleagues from our group of companies.</span></p></li><li><p><strong><span>In need of additional support in any areas of your life?</span></strong><span> We offer free counseling and support in all areas of life (professional, private, family, health, etc.) in cooperation with the </span><a href="https://mein.familienservice.de/en/" rel="noopener" target="_blank"><span>pme-Familienservice</span></a><span>.</span></p></li><li><p><strong><span>You want full flexibility on your way to work and beyond? </span></strong><span>No problem with a job bike or Deutschlandticket - and it's environmentally friendly, too!</span></p></li><li><p><strong><span>Want to keep yourself fit?</span></strong><span> We offer many different fitness and sports options, such as an Urban Sports or Gympass membership, to suit your personal needs.</span></p></li