# Research Engineer (f/m/d) at Sonar Research Engineer (f/m/d) at Sonar in Bochum. On-site, full-time, paying €90k–€160k. Posted September 8, 2025. - Company: Sonar - Location: Bochum - Workplace: On-site - Job type: Full-time - Pay: €90k–€160k - Experience: 2+ years - Posted: 2025-09-08 - Apply: https://jobs.lever.co/sonarsource/9984dd32-2082-4ca2-9ee5-d47cb6940da8/apply - Source: https://jobmagic.ai/jobs/research-engineer-fmd-sonar-83bbvx ## Requirements - Advanced academic background in Computer Science, Machine Learning, or a related quantitative field. - Strong software engineering experience (minimum 2+ years in industry) with proficiency in Python and major modern programming languages. - Practical experience with modern agentic frameworks, software automation tools, and LLM architectures. - Experience of driving research projects from initial ideation to a demonstrable prototype with a high degree of autonomy. - Hands-on experience integrating third-party tools, program analysis frameworks, or open-source libraries into functional prototypes. - Proven experience in data handling: constructing high-quality datasets, defining objective success metrics, and building robust benchmarks for new solutions. - The ability to fast context-switch and maintain momentum across multiple concurrent, fast-moving research topics. - Excellent communication skills in English, with a talent for translating complex research findings into clear, actionable artifacts for product engineering squads. - Background in static analysis: abstract syntax trees (ASTs), code security, bug detection, etc.. - Familiarity with LLM techniques such as model fine-tuning, semantic search engines, etc. - Experience with large-scale data processing frameworks and cloud infrastructure (e.g. AWS). ## Description ### **Position description**   At Sonar, we are seeking an innovative Research Engineer to join our Data & Agentic team and pioneer the next generation of our code analysis and verification engines. You will be at the forefront of applying cutting-edge AI, advanced agentic workflow and static analysis techniques to complex source code. Your work will directly shape our core products—ensuring both AI-generated and developer-written code meets rigorous enterprise quality and security standards. If you are driven to turn state-of-the-art research into practical, high-impact solutions, this is the role for you.     ### What you will do - **Create & Innovate:** Actively participate in the conceptualization phase. Brainstorm novel ways to improve our products and provide immediate, practical feedback to steer exploratory research toward paths that are both impactful and engineering-feasible. - **Develop Agentic Workflows**: Design, prototype, and validate intelligent agentic systems and automated workflows that facilitate writing clean code, identifying root causes of system issues, and remediating complex bugs and vulnerabilities. - **Develop Pragmatic Prototypes: **Build hands-on prototypes that prove the viability and scalability of research concepts. Proactively identify engineering bottlenecks or scalability limits and propose effective mitigations early in the research phase. - **Evaluate & Benchmark: **Drive the rigorous evaluation of new product features. Construct high-quality datasets, define relevant success metrics, and implement comprehensive benchmarks leveraging Sonar’s existing IP alongside third-party and open-source AI tools. - **Engineer Data Pipelines**: Build and manage robust data pipelines to gather, process, and version massive code-centric datasets required for training and evaluating specialized models at scale. - **Translate Prototypes to Products**: Collaborate closely with engineering and product teams to integrate successful prototypes into Sonar's cutting-edge products, ensuring they meet the needs of our global user base. - **Communicate and Evangelize**: Clearly articulate and document complex technical concepts and research findings to both technical and non-technical stakeholders ### Experience and qualifications Must have: - Advanced academic background in Computer Science, Machine Learning, or a related quantitative field. - Strong software engineering experience (minimum 2+ years in industry) with proficiency in Python and major modern programming languages. - Practical experience with modern agentic frameworks, software automation tools, and LLM architectures. - Experience of driving research projects from initial ideation to a demonstrable prototype with a high degree of autonomy. - Hands-on experience integrating third-party tools, program analysis frameworks, or open-source libraries into functional prototypes. - Proven experience in data handling: constructing high-quality datasets, defining objective success metrics, and building robust benchmarks for new solutions. - The ability to fast context-switch and maintain momentum across multiple concurrent, fast-moving research topics. - Excellent communication skills in English, with a talent for translating complex research findings into clear, actionable artifacts for product engineering squads. Plus: - Background in static analysis: abstract syntax trees (ASTs), code security, bug detection, etc.. - Familiarity with LLM techniques such as model fine-tuning, semantic search engines, etc. - Experience with large-scale data processing frameworks and cloud infrastructure (e.g. AWS).      ### **Additional comments** This role is based in Bochum. We are unable to consider candidates unwilling to be in Bochum, but we are willing to relocate the right candidate.