Senior Software Engineer - Transactions

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

Are you a passionate developer with an agile mindset? And would you like to be part of a strategically important product area in one of the world’s leading software providers within the Fintech industry? Then you should joinSimCorpasaC#& APLSoftware Engineer!

WHO WE ARE?

For over 50 years, we have worked closely with large and global investment and asset managers to become the world’s leading provider of integrated investment management solutions. We are 2,500+ colleagues with a broad range of nationalities,educations, professional experiences, ages, and backgrounds in general. SimCorp is an equal opportunity employer. We are committed to building a culture where diverse perspectives andexpertiseare integrated in our everyday work. We believe in the continual growth and development of our employees, so that we can provide best-in-class solutions to our clients. While striving to deliver client value, we believe it is vital to consider our people and our planet in every business decision we make. Acting responsibly is not optional. It is essential.

WHY THIS ROLE IS IMPORTANT TO US

We are looking for a Senior Software Engineer to join the Transactions & Private Debt product area and contribute to business-critical functionality used by our clients in their daily investment operations. You will work as part of an experienced engineering team, contributing to backend development, component design, performance, reliability and maintainability. The work is technically interesting because it combines complex business logic, long-lived enterprise software and the need to keep improving how we build and deliver functionality. Most of the current product logic is written in APL, while we are increasing our use of C#/.NET in new development, integrations, cloud enablement, and platform modernization. You do not need prior APL experience. We will provide training and support and we are looking for someone who is curious enough to learn what is needed while bringing strong engineering practices from C#/.NET. You will work with experienced engineers across locations and have room to influence how we build, modernize and evolve the product.

WHAT YOU WILL BE RESPONSIBLE FOR

As a Senior Software Engineer, you will help the team build reliable, maintainable and well-tested backend solutions. In practice, you will:

• 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 other 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

YOUR QUALIFICATION

• Bachelor’s degree in computer science, information technology, ora relatedfield
• 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 both technical and non-technical colleagues
• Interest in learning APL. Prior APL experience is not required
• Experience with Azure or cloud-based development is an advantage, but not a prerequisite

NICE-TO-HAVE

• Experience from fintech, financial services or another regulated industry
• Exposure to functional, array-oriented or vector-based programming languages
• Experience with Azure services or cloud-based development
• Experience mentoring other engineers or taking ownership of a component

BENEFITS

• Flexible working hoursand hybrid model - 2 days in the office, 3 days remote
• Modern office (next to Wilanowska metro station) with quiet zones and ergonomic workstations
• Base salary with annual bonus structure
• Holiday allowance upon a 2-week vacation
• Occasional remote work across Poland and international options available (up to 24 days domestic, 20 days international per year - subject to internal policy)
• Employer-paid Medicover Platinum healthcare package (employee-paid family upgrade available)
• Multisport card with 75% employer contribution
• Unum group life insurance (employee-paid upgrade available)
• Medicover travel insurance for private trips and global business travel insurance
• Possibility to join Deutsche Börse Group Share Plan (eligible after 1 year)
• Copyrights program for certain roles
• Possibility to develop your career in an international environment
• Professional training and courses provided by SimCorp
• Polish language classes for foreign employees; German and English classes based on business needs
• Integration events, volunteering initiatives and employee-led clubs
• Compensation ranges are being disclosed at the initial stage of candidate engagement.

SimCorp is a provider of industry-leading integrated investment management solutions for the global buy side. Founded in 1971, with more than 3,000 employees across five continents, SimCorp is a truly global technology leader that empowers more than half of the world’s top 100 financial companies through its integrated platform, services, and partner ecosystem. SimCorp is a subsidiary of Deutsche Börse Group. As of 2024, SimCorp includes Axioma, the leading provider of risk and management and portfolio optimization solutions for the global buy side.