Software Engineer (Backend) for Custody

A t the Boerse Stuttgart Group, we are the sixth-largest stock exchange group in Europe with strategic pillars in the capital markets business as well as in the digital and crypto business. In the capital markets sector , we operate stock exchanges in Germany, Sweden, and Switzerland, and CATS, a European over-the-counter trading network. The group also includes EUWAX AG, an internationally active broker . ​ ​ As a pioneer , we have developed Boerse Stuttgart Digital, the largest digital and crypto business among European exchange groups . With solutions for institutional clients in brokerage , trading , and custody , as well as the BISON platform for private investors , Boerse Stuttgart Digital provides reliable, regulated , and transparent access to the crypto world . We employ over 700 people across locations in Stuttgart, Berlin, Stockholm, Zurich , and Šenčur. This position allows for partly remote work; however, we highly value in-person interaction within the team. Therefore, we request your regular on-site presence for alignments, special events, and to help foster team spirit. Your Future Team You will be part of the Custody team, specializing in developing secure, scalable backend solutions for institutional-grade custody products. This role focuses on blockchain integrations, high security, and regulatory compliance. Your Tasks Work as part of an agile development team and collaborate with a wide range of stakeholders. Develop and maintain secure APIs and microservices. Integrate and maintain blockchain support. Follow industry security standards, write unit tests, and participate in code reviews to ensure secure, compliant, and maintainable code. What You Bring to the Table A minimum of 3 years of experience in C# programming, knowledge of the .NET platform (.NET Core / .NET 5+ is an advantage) Experience in designing, coding, and testing new applications. Good knowledge of microservice environments/distributed systems (Kubernetes, Docker), Linux, and relational databases. Basic proficiency with AWS. Familiarity with Git. Interest in the fields of trading, investing, and wealth growth. Experience in agile software development. What We Offer You The opportunity to work in the dynamic, fast-growing, and innovative environment of Crypto & Digital Assets. A challenging role with personal development opportunities. Attractive and competitive remuneration that rewards success and performance. A modern hybrid working environment in Stuttgart, Berlin, or Ljubljana with flexible working hours. Additional benefits include Workflex (working abroad) and 30 days of vacation (plus December 31st).