We are looking for a highly experienced Senior Python Developer with a strong track record of modernizing legacy systems. This is a hands‑on engineering role for someone who excels at solving complex technical problems and improving existing codebases.

Tasks

Modernize and refactor legacy applications using Python, modern Python web frameworks, and SQLAlchemy.
Apply AI‑assisted development tools to analyze and refactor legacy code.
Improve code quality, maintainability, and system reliability in a regulated environment.
Contribute to scalable architecture design and long‑term technical improvements.
Drive continuous enhancement of our technology infrastructure.
Work directly in the codebase—debugging, refactoring, implementing, and delivering.

Expectations

10+ years of professional Python development experience.
Proven experience modernizing legacy systems and migrating them to modern architectures.
Strong SQLAlchemy knowledge and experience with complex data models.
Practical experience using AI tools to support code refactoring or analysis.
Solid understanding of code quality standards in regulated industries; Pharma compliance experience is a plus.
Ability to design scalable, maintainable solutions.
Hands‑on mindset—comfortable working directly with legacy code.

We offer

Ongoing support from a dedicated agent, taking care of your project continuity, client contact, necessary formalities, work comfort and development,
Consultant Development Program – advice on growth planning based on the latest trends and market needs in IT, including consultations with agents and growth mentors,
Access to 7N Learning & Development – a development and educational platform with webinars, a library of articles and industry reports, and regular invitations to one-time and recurring development events – technical, business, and lifestyle,
Spectacular integration events, both for you (e.g., annual Kick-Off trip, Christmas parties, or Summer Olympics sports events) and for your loved ones (e.g., family picnics, movie premieres),
Professional development not only during the project – you can get involved in knowledge transfer to others within the 7N Services offering directed at 7N clients,
Relationships and access to the knowledge of the most experienced IT experts in the market – the average professional tenure of our consultants in Poland is over 10 years,
A complete benefits package, including funding for medical care, life insurance, sports cards for you and your loved ones, as well as discounts in stores in Poland and abroad.

Senior Python Engineer

7N