Engineering software is at a structural turning point. For decades, CAD systems have digitized drawing. At WSCAD, we are building the next paradigm: AI-native engineering systems, where AI becomes part of the core operating layer of engineering workflows. We are looking for a Senior AI Systems Engineer to help build and validate this next-generation platform. You will work on LLM production pipelines, evaluation, retrieval, orchestration, and knowledge graphs — turning engineering intent into structured, checkable, and reliable system behavior. At WSCAD, AI is not a side project or an isolated feature. This role is about making AI systems work in production: defining where models should and should not make decisions, measuring their quality against real data, and building the technical foundations that make their behavior scalable, reproducible, and trustworthy. • Own evaluation. Build gold datasets, metrics, and regression tests for quality, stability, and cost. Measure whether model or prompt changes improve or worsen results. • Design the LLM boundary. Define tool contracts, structured outputs, context, uncertainty handling, and refusal paths. • Improve retrieval at scale. Strengthen grounding, pattern matching, and duplicate detection, and measure the impact. • Consolidate orchestration. Improve routing, re-execution, and bounded agent workflows. • Turn expert knowledge into graph knowledge. Work with electrical engineers to formalize reusable circuit patterns. • Be a technical sparring partner. Challenge architectural decisions with evidence and help shape the technical direction. • Experience shipping and operating a production LLM system, including measurable evaluation using gold data, precision/recall or equivalent metrics, stability, and cost. • Strong backend engineering skills. Experience with C#/.NET is helpful but not required. • Experience with graphs, rich engineering schemas, or complex domain models. • Strong understanding of the difference between prompts, specifications, and measurable system behavior. • Ability to work across software engineering, electrical engineering, and product. • Professional proficiency in English and German. Nice to have: • Experience with RDF, SPARQL, SHACL, SKOS, named graphs, or triple stores. • Experience with embeddings, hybrid retrieval, and reranking. • Experience with LLM observability, tracing, and cost monitoring. • Familiarity with industrial information models such as IEC 81346, ECLASS, AAS, AutomationML, or ISO 15926. • Experience with CAD, CAE, PLM, automation, or digital twins. • Experience with agent frameworks. • A defining role in building a new category of engineering software • Direct influence on product architecture and strategy • Highly competitive compensation and a long-term growth path • A growing company with a motivated team and helpful colleagues • Flexible working hours and a hybrid working model • 30 days annual leave • An individual onboarding programs • High-quality advanced training • A good working atmosphere with an open feedback culture • Benefits package including: • Company pension plan (BAV) • Capital-forming benefits • Employee benefits • Ticket Plus® Card (Edenred) • JobBike Dein HR-Ansprechpartner bei WSCAD Vanessa Riß Telefon: +49 8131 3627-340 E-Mail: Jobs@wscad.com WSCAD GmbH – Office Bergkirchen Dieselstraße 4 85232 Bergkirchen