Senior Software Developer, C# / .NET – Billing System

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🕒 June 3

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Hypoport SE

WebsiteLinkedInAll Job Openings

1001 - 5000 employees

Founded 1999

💳 Fintech

🏠 Real Estate

☁️ SaaS

Fintech • Real Estate • SaaS

Hypoport SE is a publicly listed parent company that operates a network of technology firms serving the FinTech, PropTech and InsurTech sectors. It provides platforms and software-enabled services that connect lenders, brokers, insurers and other financial and real-estate market participants, while promoting agile, self-organized workplace culture and digital, activity-based offices. Hypoport positions itself as a growth-focused technology network enabling B2B platform solutions and talent development across its group companies.

📋 Description

• You develop and take ownership of a central billing system (C# / .NET, backend) and ensure its stable operation. • You work within an established .NET system landscape and take responsibility for the further development of a long-standing codebase. • You analyze complex business and technical contexts and make well-founded technical decisions that sustainably improve and purposefully modernize the system. • You identify technical debt early, assess it realistically, and drive pragmatic, effective modernization. • Within the team you communicate technical topics clearly, stand by your decisions, and provide guidance even in demanding situations. • You work with relational databases, web applications and REST APIs in the .NET environment. • You perform deployments, keep an eye on production operations, and follow issues through to a reliable solution.

🎯 Requirements

• You have at least 5–10 years of experience as a software developer with C# and .NET and are comfortable working in large, existing backend systems. • Object-oriented software development, ASP.NET, Entity Framework, REST APIs and relational databases are part of your core skill set. • You are willing to work primarily in mature .NET codebases (e.g. .NET Framework 4.7/4.8) and actively, realistically drive their modernization. • Clean Code, maintainable architectures and automated tests form the basis for your technical decisions. • You take responsibility, communicate clearly and can confidently represent technical positions. • Experience with CI/CD or AI-assisted development tools is a plus. • You have fluent German language skills (C1) and very good English skills (B2), both written and spoken. • Experience from product-oriented environments such as FinTech, platforms or SaaS is an advantage.

🏖️ Benefits

• Company pension plan and 30 days of annual leave per year (based on a 5-day week) • Experienced colleagues who will support and welcome you to the team • The opportunity to shape our shared future – with a high degree of freedom and scope for implementation • The chance to make an impact across the Hypoport Group and to leverage support from the group • Trust as one of our company values, which we aim to live up to every day • A personal and flexible working environment where your needs are taken into account • An attractive workplace with regular after-work and team events and the option to bring dogs to the office • Daily free and fresh: lunch, drinks, brainfood as well as fruit and vegetables