mthree - Senior Software Engineer, Cracow

mthree Recruiting Portal; Poland; On-site; PLN 191,164 - 254,885; Full time

Job summary

mthree Recruiting Portal is seeking a Senior Software Engineer in Cracow, Poland. You will contribute to enhancing a credit risk modelling toolkit, engaging with stakeholders to ensure effective use and continuous improvement.

The ideal candidate should have solid Python development experience, understand coding best practices, and be familiar with Agile methodologies. Applicants must be authorized to work in Poland without sponsorship for work visas.

Qualifications

• Strong commercial experience building and testing Python applications.
• Solid knowledge of testing principles and best practices.
• Experience with coding best practices and writing maintainable code.

Responsibilities

• Contribute to the development of credit risk modeling toolkit.
• Engage with stakeholders to understand requirements.
• Gather feedback to support toolkit enhancements.

Skills

Python development

Agile development

Stakeholder engagement

Object-oriented programming

Testing principles and practices

Education

MSc or PhD in Computer Science or related field

Tools

pytest

Git

Job description

mthree - Senior Software Engineer, Cracow

Poland

The role will involve contributing to the development and enhancement of the credit risk modelling toolkit while partnering with modellers to ensure the toolkit is being used correctly and efficiently; and gather feedback to support future improvements and enhancements.

This position requires strong stakeholder engagement skills, the ability to understand end-user requirements, and solid Python development experience, including contributing to large-scale Python libraries and testing frameworks.

Qualifications

• Strong commercial experience building and testing Python applications in a professional environment.
• Strong understanding of object-oriented programming and test-driven development.
• Solid knowledge of testing principles and best practices, including experience with pytest.
• Strong understanding of coding best practices and writing clean, maintainable, pythonic code.
• Experience identifying and addressing code smells.
• Familiarity with code review best practices.
• Practical understanding of SOLID principles and common design patterns.
• Good working knowledge of Git version control.
• Experience working in Agile development environments, ideally with continuous integration practices.

Nice to Have

• MSc or PhD in Computer Science, Mathematics, Physics, Operational Research, Information Systems, or a related technical discipline.
• Exposure to credit risk analytics or related financial risk domains.
• Strong familiarity with the scientific Python stack, including NumPy, SciPy, pandas, polars, and Matplotlib.
• Experience with PySpark or other Big Data technologies.
• Experience contributing to open-source projects or developing reusable Python libraries.

Applicants must be currently authorized to work in Poland on a full-time basis. The Company will not sponsor applicants for work visas.