Natural Language Processing-Jobs in Deutschland

At Sonar we’re a group of brilliant, motivated and driven professionals working hard to help organizations build responsible, secure, high‑quality code quickly and systematically. We build solutions that don’t just solve symptoms of problems – we fix problems at the source, at the source code, to be specific.

We have a dynamic culture with employees worldwide and hub offices in the USA, Switzerland, the UK, Singapore and Germany. We believe team members should have the opportunity to come to work every day, work on a product they are proud of, love what they do and feel energized by their peers.

At Sonar we are seeking an innovative Machine Learning Scientist to join our Data & AI team and pioneer the next generation of our code analysis engine. You will be at the forefront of applying cutting‑edge AI and Large Language Model (LLM) techniques to the complex domain of source code. Your work will directly shape our products, pushing the boundaries of static analysis to help millions of developers write better, more secure code.

• Spearhead Research & Innovation: Stay on the cutting edge of ML, Deep Learning and LLMs, specifically their application to the Software Development Lifecycle (SDLC) and identify novel opportunities to enhance our products.
• Develop Advanced AI Models: Design, prototype and validate novel ML models that identify and resolve complex bugs, vulnerabilities and code smells, going beyond the capabilities of traditional static analysis.
• Build LLM‑Powered Features: Develop and implement advanced LLM‑based solutions including Retrieval‑Augmented Generation (RAG) for contextual code analysis, fine‑tune models on proprietary codebases and explore agentic systems for automated code remediation.
• 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 ML 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.

• An advanced academic background (Masters or PhD) in Computer Science, Machine Learning or a related quantitative field.
• Strong industry experience in machine learning with a solid understanding of modern software engineering practices and tools.
• Solid programming skills in Python and hands‑on experience with core ML/DL frameworks (e.g. PyTorch, TensorFlow, Hugging Face). Familiarity with Java is a plus.
• Proven experience in applied Machine Learning with a strong focus on Natural Language Processing (NLP) or ideally Programming Language Processing (PLP).
• Hands‑on experience with modern LLM architectures and techniques such as fine‑tuning strategies (e.g. LoRA, QLoRA), advanced prompt engineering, building and optimizing Retrieval‑Augmented Generation (RAG) pipelines and working with vector databases and semantic search.
• Experience with large‑scale data processing frameworks and cloud infrastructure (e.g. AWS).
• Experience driving research projects from initial ideation to a demonstrable prototype with a high degree of autonomy.
• Excellent communication skills in English and a talent for explaining complex scientific topics clearly and concisely.

Our culture and mission set us apart. We value respect, kindness, and the right to fail (and get right back up again). The best idea wins and everyone has a voice. We believe great people make a great company and strive to keep things friendly, laid‑back, and passionately innovative. Our workforce is diverse and global – 550 SonarSourcers from 33 nationalities, all working in a flexible environment that supports remote and in‑office hybrid work (minimum three days a week in the office – Monday, Tuesday or Thursday). We have a growth mindset, love continuous learning, and support our team’s skill development.

At Sonar we are a global workforce and recognize the value of different backgrounds and global cultures. We are committed to creating a diverse work environment and are proud to be an equal‑opportunity employer. All qualified applicants will be considered for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age or veteran status. All offers of employment at Sonar are contingent upon the clear results of a comprehensive background check conducted prior to the start date. Please note that applications submitted through agencies or third‑party recruiters will not be considered.

Employment Type: Full‑Time

Vacancy: 1