Senior Software Engineer – C#.net and APL
Confirmed on the employer's own hiring board on Oct 3, 2026. First seen by Alion on Oct 1, 2026. SimCorp scores A on the Alion truth index.
Senior Software Engineer - C#.net and APL
WHO WE ARE
For over 50 years, we have worked closely with investment and asset managers to become a top provider of integrated investment management solutions. We are 3,000+ colleagues with a broad range of nationalities, educations, professional experiences, ages, and backgrounds.
SimCorp is an independent subsidiary of the Deutsche Börse Group. Following the recent merger with Axioma, we leverage the combined strength of our brands to provide an industry-leading, full, front-to-back offering for our clients.
SimCorp is an equal opportunity employer and welcome applicants from all backgrounds, without regard to race, gender, age, disability, or any other protected status under applicable law. We are committed to building a culture where diverse perspectives and expertise are integrated into our everyday work. We believe in the continual growth and development of our employees, so that we can provide high-quality solutions to our clients
WHAT MAKES US, US
Join some of the most innovative thinkers in FinTech as we lead the evolution of financial technology. If you are an innovative, curious, collaborative person who embraces challenges and wants to grow, learn and pursue outcomes with our prestigious financial clients, say Hello to SimCorp!
At its foundation, SimCorp is guided by our values - caring, customer success-driven, collaborative, curious, and courageous. Our people-centered organization focuses on skills development, relationship building, and client success. We take pride in cultivating an environment where all team members can grow, feel heard, valued, and empowered.
If you like what we’re saying, keep reading!
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 and AI 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 solid engineering practices from C#/.NET.
You will work with experienced engineers across locations and have room to contribute to 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
Use Git-based workflows and work effectively in a continuous integration environment.
WHAT WE ARE LOOKING FOR
- Bachelor’s degree in computer science, information technology, mathematics, or a related field.
- Solid engineering fundamentals: object-oriented design, architecture patterns, clean code, and pragmatic problem solving
- Solid experience in C#/.NET (Core/Framework) and building backend systems (APIs, services, integrations).
- Familiarity with APIs (REST/streaming patterns) and messaging concepts (e.g., service bus patterns).
- Experience with Azure or cloud-based development is an advantage, but not a prerequisite
- Experience with automated testing, code reviews, CI/CD, and Git-based workflows.
- Good problem-solving skills and the ability to work independently and as part of a team.
- Ability to work with complex business logic and collaborate with both technical and non-technical colleagues .
APL READINESS
- You don’t need prior APL experience. What matters is curiosity and willingness to learn. We provide training and a supportive environment to help you succeed, and SimCorp partly owns Dyalog APL, helping ensure the language remains actively maintained and relevant.
NICE-TO-HAVE
- FinTech / regulated-industry experience.
- Exposure to vector-based or functional languages (helpful for ramping up in APL).
- Experience with Azure services or cloud-based development.
- Experience mentoring other engineers or taking ownership of a component.
BENEFITS
- Flexible working hours and 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
NEXT STEPS
Please click below to apply or get in touch with Tangella Viswanath, Recruitment Consultant or you may send an email to [email protected] to learn more about the vacancy and what SimCorp has to offer regarding salary, benefits, and perks. Applications are continuously assessed, so please send your CV in English as soon as possible. If you are interested in being a part of SimCorp but are not sure this role is the right fit, submit your CV anyway. SimCorp is on an exciting growth journey, and our Talent Acquisition Team is ready to help you discover the right role for you. The approximate time to consider your CV is three weeks. We are eager to continually improve our talent acquisition process and make everyone’s experience positive and valuable. Therefore, during the process, we will ask you to provide your feedback, which is highly appreciated.
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