(Senior) AI Engineer - Conversational AI Systems (m/w/d)

<p class="Paragraph SCXW85530139 BCX0">We are building a conversational AI experience at idealo – a product-aware assistant that helps users explore, compare, and decide on purchases through natural dialogue. The system integrates capabilities like RAG-based access to product data, agent orchestration, and explainable result evaluation.</p><p class="Paragraph SCXW85530139 BCX0" style="min-height: 1.7em;"></p><p class="Paragraph SCXW85530139 BCX0">As an <strong>AI Engineer</strong>, you will combine <strong>conceptual thinking</strong> with hands-on engineering to design, implement, and evolve this AI-native experience. You will stay <strong>up-to-date</strong> in this dynamic field, continuously testing the latest AI developments and integrating them into production systems when they meet a real business need. You will work closely with our <strong>Fullstack Developers</strong> and AI Engineers, collaborating across the stack to deliver robust, scalable AI workflows that connect seamlessly with idealo’s product ecosystem.</p><p style="min-height: 1.7em;"></p><h3><span style="color:#121317">About your new role</span></h3><p style="min-height: 1.7em;"></p><ul class="BulletListStyle1 SCXW256780152 BCX0"><li><p class="Paragraph SCXW256780152 BCX0">Build a sustainable, modular agent-style application that integrates existing components and conversational UIs.</p></li></ul><ul class="BulletListStyle1 SCXW256780152 BCX0"><li><p class="Paragraph SCXW256780152 BCX0">Develop and iterate frontend conversational formats (React, streaming/SSE) and connect them to backend services and prompt systems.</p></li></ul><ul class="BulletListStyle1 SCXW256780152 BCX0"><li><p class="Paragraph SCXW256780152 BCX0">Design, implement, and evolve agent architectures using common patterns and frameworks (e.g. Strands Agents, orchestrator/sub-agent designs on Amazon Bedrock AgentCore).</p></li></ul><ul class="BulletListStyle1 SCXW256780152 BCX0"><li><p class="Paragraph SCXW256780152 BCX0">Work with product search and retrieval pipelines to ensure relevant and up-to-date retrieval of product information.</p></li></ul><ul class="BulletListStyle1 SCXW256780152 BCX0"><li><p class="Paragraph SCXW256780152 BCX0">Develop and evaluate prompt flows – optimizing language quality, task alignment, and output stability.</p></li></ul><ul class="BulletListStyle1 SCXW256780152 BCX0"><li><p class="Paragraph SCXW256780152 BCX0">Define and monitor AI-specific non-functional requirements (e.g. hallucination rate, response quality, content safety, explainability).</p></li></ul><ul class="BulletListStyle1 SCXW256780152 BCX0"><li><p class="Paragraph SCXW256780152 BCX0">Stay on top of new AI capabilities, assess them critically, and integrate them into production systems when they add clear business value.</p></li></ul><ul class="BulletListStyle1 SCXW256780152 BCX0"><li><p class="Paragraph SCXW256780152 BCX0">Collaborate closely with product teams, Fullstack Developers, and MLEs to translate user and business needs into a flexible AI roadmap.</p></li></ul><p style="min-height: 1.7em;"></p> <br> <h3 style="text-align:start;"><strong><span style="color:#121317">Skills &amp; Requirements</span></strong></h3><p style="min-height: 1.7em;"></p><ul class="BulletListStyle1 SCXW209106039 BCX0"><li><p class="Paragraph SCXW209106039 BCX0">Proven experience building agent-style applications with real-world impact (LLM orchestration, tools, memory, autonomy).</p></li></ul><ul class="BulletListStyle1 SCXW209106039 BCX0"><li><p class="Paragraph SCXW209106039 BCX0">Hands-on knowledge of retrieval / RAG concepts and implementation (must).</p></li></ul><ul class="BulletListStyle1 SCXW209106039 BCX0"><li><p class="Paragraph SCXW209106039 BCX0">Track record in prompt engineering, prompt evaluation, and optimization strategies.</p></li></ul><ul class="BulletListStyle1 SCXW209106039 BCX0"><li><p class="Paragraph SCXW209106039 BCX0">Strong skills in both frontend development (conversational UIs) and backend orchestration (Python).</p></li></ul><ul class="BulletListStyle1 SCXW209106039 BCX0"><li><p class="Paragraph SCXW209106039 BCX0">Experience with retrieval architectures, context assembly, and vector stores.</p></li></ul><ul class="BulletListStyle1 SCXW209106039 BCX0"><li><p class="Paragraph SCXW209106039 BCX0">Ability to think conceptually and strategically about AI systems, while executing on technical implementation.</p></li></ul><ul class="BulletListStyle1 SCXW209106039 BCX0"><li><p class="Paragraph SCXW209106039 BCX0">Deep curiosity and initiative: you enjoy fast prototyping, experimentation, and iterative design.</p></li></ul><ul class="BulletListStyle1 SCXW209106039 BCX0"><li><p class="Paragraph SCXW209106039 BCX0">Bonus: Experience in AI system scaling, performance tuning, and quality assurance.</p></li></ul><p style="min-height: 1.7em;"></p><h3 style="text-align:start;"><strong><span style="color:#121317">At idealo you can expect</span></strong></h3><ul><li><p><strong><span style="color:#121317">You want to further your education?</span></strong><span style="color:#121317"> 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 style="color:#121317">And what about the office? </span></strong><span style="color:#121317">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 style="color:#121317">In need of additional support in any areas of your life?</span></strong><span style="color:#121317"> We offer free counseling and support in all areas of life (professional, private, family, health, etc.) in cooperation with the </span><a rel="noopener" target="_blank" href="https://mein.familienservice.de/en/"><span style="color:#121317">pme-Familienservice</span></a><span style="color:#121317">.</span></p></li><li><p><strong><span style="color:#121317">You want full flexibility on your way to work and beyond? </span></strong><span style="color:#121317">No problem with a job bike or Deutschlandticket&nbsp;- and it's environmentally friendly, too!</span></p></li><li><p><strong><span style="color:#121317">Want to keep yourself fit?</span></strong><span style="color:#121317"> We offer many different fitness and sports options, such as an Urban Sports or Gympass membership, to suit your personal needs.</span></p></li><li><p><strong><span style="color:#121317">And what else is there?</span></strong><span style="color:#121317"> Of course, success must be celebrated! In addition to team events, you can also expect big company events and other moments of organized connection with others in the company and your team throughout the year!</span></p></li></ul><p><span style="color:#ffffff">#LI-MR1</span></p><p>Find <a href="https://www.arbeitnow.com">Jobs in Germany</a> on Arbeitnow</a>