Senior Software Engineer - FinTech & Fulfillment (C#/.NET)

Auction Group A/S (AutoProff); København; On-site; DKK 700,000 - 900,000; Full time

Job summary

AutoProff, Copenhagen-based, seeks a Software Engineer to design, develop, and maintain robust post-trade services in a cross-functional B2B FinTech environment. You will work closely with product, operations, and external partners to deliver scalable solutions across Europe.

You’ll operate in a developer-friendly culture that values experimentation, learning, and ownership, using modern tools and best practices to ship reliable software.

Qualifications

• Proven ability to thrive in adaptable, ownership-driven environments.
• Experience with .NET and C#.
• Strong understanding of OOP, distributed systems and event-driven architecture.
• Experience with relational databases or No-SQL databases.
• Fluent business English (spoken and written).
• Willingness to learn new technologies and tools.
• Ability to troubleshoot and debug complex issues.

Responsibilities

• Design, develop, and maintain efficient, reusable code in a cross-functional team.
• Collaborate with product, operations and external partners to deliver robust post-trade services.
• Contribute to scalable solutions and architecture for the Fulfillment & FinTech domain.
• Mentor and coach teammates and share knowledge.
• Own and drive the quality of your code and features.

Skills

C#/.NET

OOP

Distributed systems

Event-driven

Relational/NoSQL DBs

Business English

Adaptability

Troubleshooting

Tools

AWS

Job description

AutoProff, Copenhagen-based, seeks a Software Engineer to design, develop, and maintain robust post-trade services in a cross-functional B2B FinTech environment. You will work closely with product, operations, and external partners to deliver scalable solutions across Europe.

You’ll operate in a developer-friendly culture that values experimentation, learning, and ownership, using modern tools and best practices to ship reliable software.