Lead Python Developer

O projekcie:
Company Overview

Our client is a leading global financial services organisation with significant operations across wholesale banking and risk management. They operate across five continents, serving complex risk reporting needs for a diverse portfolio. The organisation is committed to building an inclusive workplace where employees are valued, respected and supported through flexible working arrangements, continuous professional development and clear career progression opportunities.

Our client is seeking an experienced Lead Python Developer to join their Financial Engineering unit in Krakow. This is an excellent opportunity to lead technical development on toolkits that directly shape how credit risk is modelled and measured across the organisation. If you're looking to advance your career leading high-performing teams whilst working on meaningful financial engineering challenges, this role offers genuine impact and growth potential.

Position Overview

This role sits within the Model Enablement team, a critical part of the Financial Engineering unit that bridges toolkit development with end-user adoption. You'll contribute to building and improving the credit risk modelling toolkit whilst working directly with wholesale credit risk modellers to ensure effective toolkit usage and gather feedback for continuous improvement. Your work will directly influence how risk analysis and measurement processes operate across the organisation, helping to improve consistency, reduce project timelines, lower failure risk and streamline model deployment.

Location: Krakow, Poland

Contract Type: Contract
- Lead development of credit risk modelling toolkit used across global operations.- Manage and mentor a medium-sized developer team on high-impact financial engineering projects.- Shape how thousands of risk analysts work by improving toolkit adoption and user experience.- Work with senior stakeholders across five continents to influence risk analysis processes.- Flexible working arrangements including remote work options to support your work-life balance.Benefits
- Competitive salary package reflecting your seniority and expertise.- Opportunity to lead technical strategy on toolkits impacting global risk operations.- Clear pathway for career advancement within a large financial services organisation.- Access to continuous professional development and training programmes.- Flexible working arrangements including part-time, job sharing and remote work options.- Collaborative, inclusive workplace culture that values diverse perspectives and supports employee wellbeing.Extras:
High-quality banking technology environment, senior engineering scope, Python development, data/financial markets exposure, complex enterprise systems and long-term project potential.

Alongside a competitive benefits package, you'll join a forward-thinking organisation committed to supporting your career development, fostering an inclusive environment where your contributions are valued and enabling flexible working to support your individual needs.

Wymagania:
Essential:
- Senior-level professional experience building and testing Python applications in production environments.- Proven experience leading and managing developer teams.- Strong knowledge of coding best practices and ability to identify code quality issues.- Experience writing clean, Pythonic code with attention to code smells and maintainability.- Demonstrated expertise in code review best practices and standards.- Proficiency with git version control systems.- Experience working in Agile environments, ideally with continuous integration practices.
Desirable:
- MSc or PhD in a technical discipline such as Computer Science, Mathematics, Physics, or Operational Research.- Familiarity with credit risk analytics and financial modelling concepts.- Knowledge of Python scientific computing stack, including NumPy, SciPy, pandas, polars, and Matplotlib.- Experience with PySpark or similar big data tools.- Background developing open-source or commercial Python libraries.- Experience with containerisation and orchestration tools such as Docker, Kubernetes, and Jenkins.

Codzienne zadania:
- Lead the development and maintenance of a large-scale Python library used by credit risk modellers globally.
- Manage a team of developers, providing technical direction, code review oversight and mentoring on best practices.
- Collaborate with wholesale credit risk modellers to understand requirements and ensure toolkit effectiveness.
- Develop and maintain comprehensive testing suites to ensure code quality and reliability.
- Contribute to prototype development that influences risk analysis and measurement processes.
- Gather user feedback and translate this into toolkit improvements and enhancements.
- Promote coding best practices, code review standards and pythonic development across the team.
- Work with senior non-technical stakeholders to communicate technical progress and impact.