Senior Software Engineer Python

Your new company 

Our client is an international technology-driven organization focused on delivering innovative software solutions for web-based platforms. As a recruitment agency, we are supporting a dynamic and fast-growing development team working on modern, scalable, and data-driven applications. The company fosters a collaborative, Agile environment and values high-quality engineering, continuous improvement, and knowledge sharing.

Your new role 

• Designing system architecture and implementing scalable solutions
• Developing, testing, and maintaining high-quality Python code
• Implementing new features and improving existing functionalities
• Ensuring adherence to coding standards and best practices
• Writing clean, tested code (unit, integration, and QA tests)
• Creating and maintaining technical documentation
• Supporting debugging and troubleshooting of software issues
• Conducting code reviews and providing technical guidance
• Mentoring junior engineers and contributing to team development
• Participating in research and solution design with Product Managers
• Contributing to the improvement of development processes and tool selection

What you'll need to succeed 

• 7+ years of experience in developing commercial-grade web applications using Python
• Strong experience with data-driven web applications
• Practical knowledge of SOLID principles and Domain-Driven Design (DDD)
• Hands-on experience working with Large Language Models (LLMs) and NLP technologies, ideally within multi-agent systems
• Experience working in Agile environments (Scrum, Kanban)
• Basic understanding of machine learning concepts and algorithms
• Solid experience in designing data models and working with SQL databases (MySQL, MariaDB, PostgreSQL)
• Strong communication skills and ability to work in cross-functional teams
• Proactive, self-driven, and well-organized approach to work
• Fluency in English (both written and spoken)

What you'll get in return 

• Competitive employment conditions within a stable, international environment
• Generous vacation allowance
• Up to 14 days of paid sick leave annually (including short absences)
• Private healthcare package (Luxmed or Medicover)
• Access to a benefits platform (including Multisport card)
• Opportunity to work with cutting-edge technologies (including AI/LLM solutions)
• Collaborative work culture with opportunities for professional growth and mentorship
• Long-term career development in a modern engineering organization

What you need to do now 

If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.

Hays Poland sp. z o.o. is an employment agency registered in a registry kept by Marshal of the Mazowieckie Voivodeship under the number 361.