Senior Software Engineer (.NET)

Description

Reliable, high-performing software supports investment professionals in making informed decisions and running critical business processes. As a Senior Software Engineer, you will evolve the Portfolio Analytics area of SimCorp Dimension, strengthening backend services and APIs that support clients.

You will join an agile team of 5–7 colleagues working with C#, .NET, Dyalog APL, Oracle, and AI-assisted development tools. The team improves and supports the Asset Manager module, with C# and Oracle as its main technologies.

Key focus areas include maintainability, system performance, continuous integration and delivery, and migration to a unified cloud platform. The role offers opportunities to grow in technical leadership or guide others with existing leadership experience.

Responsibilities

• Collaborate with product and engineering colleagues to understand customer needs, challenge assumptions, shape solutions, and deliver tested, supportable software.
• Design, build, and maintain backend components and APIs using C#/.NET and related technologies.
• Improve system performance, maintainability, reliability, and build efficiency through pragmatic engineering and continuous improvement.
• Use AI-assisted development tools responsibly for exploration, implementation, testing, documentation, and code review.
• Contribute to automated testing, continuous integration, and continuous delivery practices for predictable, high-quality releases.
• Help shape technical decisions and share knowledge through code reviews, pairing, mentoring, and constructive collaboration.

Qualifications

• Experience developing production software with C# and/or APL, or comparable strong backend engineering experience.
• Interest in technical design and practical decision-making for scalable, high-performing applications, services, or APIs.
• Familiarity with automated testing, version control, continuous integration, and continuous delivery.
• Thoughtful use of AI-assisted development tools, with sound judgement regarding quality, security, and maintainability.
• Curiosity and willingness to learn Dyalog APL and deepen knowledge of investment-management software.
• Collaborative approach to problem-solving, knowledge sharing, and technical leadership growth.
• Experience with Angular, Node.js, JavaScript/TypeScript, HTML, CSS, Oracle databases, or financial systems is welcome but not required.

Benefits

• Flexible working hours and hybrid work model: 2 days in the office and 3 days remote.
• Modern office near Wilanowska metro station, with quiet zones and ergonomic workstations.
• Base salary with annual bonus structure.
• Occasional remote work across Poland and internationally: up to 24 domestic and 20 international days per year, subject to internal policy.
• Employer-paid Medicover Platinum healthcare package, with a family upgrade available.
• Monthly MyBenefit Cafeteria budget, usable for a Multisport card with a 25% employee contribution or other lifestyle options.
• Unum group life insurance, with an employee-paid upgrade available.
• Medicover travel insurance for private trips and global business travel insurance.
• Opportunity to join the Deutsche Börse Group Share Plan after one year of eligibility.
• Copyrights program for certain roles.
• Professional training and courses.
• Polish language classes for foreign employees; German and English classes based on business needs.
• Compensation ranges disclosed at the initial stage of candidate engagement.

Application

Please submit an application in English through the career site. Applications are processed continually, and only applications submitted through the system will be considered.

Exclude personal data such as a photo, age, or other non-professional information from the application. The approximate CV review time is three weeks.