Senior Software Engineer (Python)

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 they’re 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:

• Proven expertise in Python development, writing clean, maintainable, and efficient code.
• Solid software engineering foundation, including algorithms, testing, CI/CD, and best practices for building scalable and reliable software.
• Deep curiosity about LLMs, static analysis, and multiple programming languages, recognizing their strengths, challenges, and nuances.
• Genuine interest in AI-driven software development, and a willingness to work on projects integrating AI with developer tools.
• Pragmatic approach to problem-solving, balancing research-driven innovation with building production-ready systems.
• Self-driven mindset, bold enough to challenge the status quo, yet humble and open to learning and feedback.
• Bonus points for hands-on experience with LLM-related projects, static analysis, or proficiency in additional programming languages (e.g., TypeScript, Java, C#).
• Initiative and Ownership: You can take a task from concept to completion with minimal supervision.
• Curiosity and Adaptability: You thrive in a fast-moving environment, staying eager to learn new technologies and experiment with AI-driven solutions.
• Open-mindedness and a Positive Attitude: You welcome new ideas, embrace feedback, and collaborate effectively with diverse teams.
• Comfort with Complexity and Change: You excel at navigating uncertainty, iterating quickly, and adjusting to evolving challenges.
• Confidence to Challenge and Be Challenged: You’re unafraid to question assumptions and engage in constructive discussions to drive the best outcomes.

Why You Will Love It Here:

• Our culture and mission set us apart. We have a dynamic work culture that values respect and kindness and embraces the right to fail (and get right back up again!). 
• Great people make a great company. We value people skills as much as technical skills and strive to keep things friendly while still being passionate leaders in our domains. 
• We have a flexible work policy that includes 3 days in-office and 2 days work-from-home each week for those located near our office locations; some locations such as Dubai, India, Japan and Australia operate fully remotely.
• We have a growth mindset. We love learning and believe continuous education is critical to our success. In an ever-changing industry, new skills are necessary, and we're happy to help our team acquire them.
• As the leader in our field, our products and services are as strong as our internal team members.
• We embrace transparency with regular meetings, cascading messages and updates on the growth and success of our organization.

Benefits of Working With Sonar:

• We encourage usage of our robust time-off allocations with 27 PTO days for our employees based out of the Geneva region, plus additional days based on seniority and circumstances.
• We contribute 60% of the total cost for your pension; 13.5% to 15.5% of your base salary for savings; 2% for risk.
• Generous discretionary Company Growth Bonus, paid annually.  
• Commuting:Sustainable mobility options, including carpooling and the refund of 60% of the annual transportation subscription.
• Global workforce with employees in 20+ countries representing 35+ unique nationalities.
• We have an annual kick-off somewhere in the world where we meet to build relationships and goals for the company.