Developer python Jobs in Essen

Who is Sonar

Sonar helps prevent code quality and code security issues from reaching production amplifies developers productivity in concert with AI assistants and improves the developer experience with streamlined workflows. Sonar analyzes all code regardless of who writes it your internal team genAI or third parties resulting in more secure reliable and maintainable applications. Rooted in the open source community Sonars solutions support over 30 programming languages frameworks and infrastructure technologies. Today Sonar is used by 7M developers and 400K organizations worldwide including the DoD Microsoft NASA MasterCard Siemens and T-Mobile.

We believe in developing great products that are supported by great internal teams and a strong culture. We are highly committed to and obsessed with the company users each other and our open source community. We have high standards and hold each other accountable for acting with positivity dedication thoughtfulness empathy and passion daily.

We are deliberate with our decisions with high clarity of intention. At the same time we feel extreme urgency and move forward quickly.

And lastly we are highly effective and operationally efficient . We operate collectively as One Team to accomplish our goals.

At Sonar CODE is more than just an acronym its a mindset that defines daily operations.

Why You Should Apply :

At Sonar were a group of brilliant motivated and driven professionals working hard to help supercharge developers to build better faster. Sonar helps to continuously improve code quality and code security while reducing developer toil. This means that developers can focus on doing more of what they love and less of what they dont. Our solutions dont just solve symptoms of problems we help fix issues at the source for all code whether its developer-written AI-generated or from third parties.

We have a dynamic culture with employees worldwide and hub offices in the USA Switzerland the UK Singapore and Germany. Team members should be able to come to work every day work on a product they are proud of love what they do and feel energized by their peers. With our roots deep in the open source community were all about the mission : supercharge developers to build better faster.

The Impact You Will Have :

The Sonar Code Next team is looking for a passionate Python Developer to join a fast-paced dynamic group at the intersection of Large Language Models (LLMs) static analysis and programming languages. Working on cutting-edge AI-driven projects youll help push the boundaries of automated code quality and security.

Our mission is to harness our expertise in static analysis and large language models (LLMs) to advance AIs ability to understand generate and improve code. We develop prototypes grounded in cutting-edge research testing innovations across the LLM development lifecyclefrom data processing and model training to benchmarking. Our approach leverages techniques such as supervised fine-tuning (SFT) direct preference optimization (DPO) reinforcement learning from human feedback (RLHF) and retrieval-augmented generation (RAG) to enhance model performance and code quality.

As a key member of this team youll directly influence AI-driven solutions by developing and refining the tools that make these initiatives this hands-on role youll focus on implementing and optimizing methodologies that enhance code qualityensuring that all solutions are scalable maintainable and ready for production.

What You Will Do Daily :

• Develop and maintain Python-based tooling and infrastructure to support AI-driven solutions for code quality and security.
• Implement and optimize AI-focused experiments creating robust systems to evaluate modern techniques including fine-tuning retrieval-augmented generation (RAG) direct preference optimization (DPO) and reinforcement learning from human feedback (RLHF).
• Write scalable production-quality Python code to support AI workflows dataset processing and evaluation frameworks.
• Design and maintain benchmarking pipelines to assess Large Language Model (LLM) performance in generating clean maintainable code.
• Process and refine datasets ensuring theyre structured and optimized for training and evaluation.
• Develop integrations between AI systems and static analysis tools enabling AI-assisted insights for developers.
• Collaborate with static analysis experts and AI researchers to turn experimental ideas into practical working solutions.
• Ensure the scalability reliability and maintainability of AI tooling as it transitions from experimentation to production.
• Continuously improve the development processes via workflow refinement automation and tooling for AI-assisted coding.
• Work in a fast-paced iterative environment that bridges research-driven innovation with real-world software development.

The Experience You Will Need :

Why You Will Love It Here :

Benefits of Working With Sonar :

We Value Diversity Equity and Inclusion :

At Sonar we believe that our diversity is our strength. We are a global company that values and respects different backgrounds perspectives and cultures.

We are committed to fostering a diverse and inclusive work environment where everyone feels valued and empowered to contribute their best. We are proud to be an equal opportunity employer and welcome all qualified applicants regardless of 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 precise results of a comprehensive background check and reference verification conducted before the start date.

Applications that are submitted through agencies or third party recruiters will not be considered.

Required Experience :

Senior IC

Key Skills

Spring,.NET,C / C++,Go,React,OOP,C#,AWS,Data Structures,Software Development,Java,Distributed Systems

Employment Type : Full-Time

Experience : years

Vacancy : 1