System Engineer for legacy application C/C++
Confirmed on the employer's own hiring board on Oct 17, 2026. First seen by Alion on Oct 14, 2026. Jit Team scores A on the Alion truth index.
Salary: 1000 - 1200 PLN/day on B2B
Work model: hybrid fromŁódź(2/3 days per week from the office)
Why choose this offer?
- You can expect a flexible work organization
- The international work environment will give you the opportunity to interact with the English language on a daily basis
- Scandinavian organizational culture will provide you with work-life balance, you will gain time for additional training (financed by Jit)
- The Jit community will bring you a nice time during regular integration meetings
Project
You will be involved in a financial project focused on developing and maintaining credit risk, credit scoring, and recommendation solutions used across multiple European markets. The platform supports critical decision-making processes within the banking and financial sector, ensuring compliance with local regulations and integrating with external credit authorities.
Working as part of an Agile Scrum team, you will design, develop, and maintain C/C++ microservices, APIs, and calculation engines that process complex business rules and financial data. You will participate in the full software development lifecycle, from requirements analysis and solution design through implementation, testing, deployment, and ongoing enhancements.
Responsibilities you'll have
- Develop and maintain C/C++ applications and microservices.
- Build APIs and calculation engines for credit scoring solutions.
- Integrate systems with external credit authorities.
- Analyze, debug, and resolve technical issues.
- Collaborate with Business Analysts on requirements and solution design.
- Write and execute unit and integration tests.
- Participate in code reviews and Agile Scrum ceremonies.
- Ensure code quality, performance, and maintainability.
Expected competences and knowledge
- Strong commercial experience with C and C++
- Strong debugging and troubleshooting skills
- Good understanding of XML, mapping, and code flow analysis
- Knowledge of unit, integration, and system testing
- Understanding of OOP, SOLID principles, and design patterns
- Experience with Visual Studio
- Experience in package building and executable (.exe) creation
- Familiarity with GitHub Copilot
- Good English communication skills
Technologies you'll work with
- C++
- C
- XML
- Visual Studio
- GitHub Copilot
- REST APIs
- Microservices
- Git
- Unit & Integration Testing
- Object-Oriented Programming (OOP)
- SOLID Principles
- Agile Scrum
- Credit Scoring & Risk Systems (domain-related)
Client - why choose this particular client from the Jit portfolio?
Jit Team has had an over-decade-long relationship with the leading financial group in the Nordic countries, and we are privileged to be our client's premier partner in Poland. At present, over 200 Jit personnel are engaged in the completion of more than 60 projects for this Norwegian major provider of financial services with a global presence and a strong focus on modern technology. Our customer's work atmosphere is epitomized by the Scandinavian culture, which is conducive to people who place emphasis on work-life balance and feedback culture. Furthermore, all projects are executed in international teams, giving constant exposure to the English language.
About Jit Team
The Human Factor of IT - it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts, to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams.
Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.