Senior Backend Engineer – Fintech Platform (C#/.NET)

SimCorp; Warszawa; Hybrid; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Flexible working hours

Hybrid work model

Modern office near Wilanowska

Annual bonus

Healthcare (Medicover)

Multisport card

Share plan eligibility

Job summary

SimCorp is seeking a Senior Software Engineer for the Transactions & Private Debt product area. You will contribute to backend development, improve performance, and help modernize the platform while leveraging both C#/.NET and APL skills.

You will join a multinational team focused on reliable, scalable fintech solutions. The role emphasizes collaboration with product managers and engineers, code quality, CI/CD practices, and ongoing learning, including Azure cloud opportunities, with a flexible,

Qualifications

• Bachelor’s degree in computer science, information technology, or a related field.
• Solid experience with C#/.NET and backend development.
• Good understanding of object-oriented design, clean code, APIs, and integration patterns.
• Experience with automated testing, code reviews, CI/CD, and Git-based workflows.
• Ability to work with complex business logic and collaborate with technical and non-technical colleagues.
• Interest in learning APL; prior APL experience not required.
• Experience with Azure or cloud-based development is an advantage, but not required.

Responsibilities

• Design, implement, test and maintain backend functionality using APL and, where relevant, C#/.NET.
• Contribute to component design, code quality, performance and long-term maintainability.
• Work closely with product managers, engineers and stakeholders to understand requirements and deliver client-relevant functionality.
• Improve reliability and delivery through code reviews, automated testing, CI/CD and pragmatic engineering practices.
• Investigate technical issues, performance bottlenecks and bugs and help design sustainable solutions.
• Share knowledge with colleagues and contribute to technical discussions within the team.

Skills

C#/.NET

Backend development

OO design & APIs

Automated testing & CI/CD

Code reviews

APL learning

Azure / Cloud development

collaboration with cross-functional

Education

Bachelor's degree in CS/IT or related field

Job description

SimCorp is seeking a Senior Software Engineer for the Transactions & Private Debt product area. You will contribute to backend development, improve performance, and help modernize the platform while leveraging both C#/.NET and APL skills.

You will join a multinational team focused on reliable, scalable fintech solutions. The role emphasizes collaboration with product managers and engineers, code quality, CI/CD practices, and ongoing learning, including Azure cloud opportunities, with a flexible,