Job Description We’re looking for a hands-on Senior Application Developer with deep expertise in .NET UI development, particularly using C# and WPF, and a strong foundation in software architecture, modular design, and secure coding. This role involves significant UI development work and offers a clear, supported path toward becoming a Technical Lead. The position is based at our headquarters in Gothenburg, Sweden. You’ll be part of a collaborative and skilled team of ~15 engineers, working on a mission-critical desktop application used by over 50,000 engineers worldwide across several industries. This is a unique opportunity for someone who enjoys both building robust, high-impact applications and guiding others to grow technically. Key Responsibilities Design and implement scalable, secure features using .NET (C#) and WPF Champion and apply secure coding practices throughout the development lifecycle Collaborate with architects, designers, and developers to turn complex requirements into clean, maintainable code Take ownership of technical components and provide mentorship to fellow developers Lead technical improvements and actively contribute to architecture discussions Progressively assume Tech Lead responsibilities in planning, design decisions, and team guidance Continuously enhance the performance, security, and functionality of the application to meet industry standards Requirements Must be located in commutable distance to Gothenburg, Sweden. Proven experience developing applications using .NET (C#) and WPF Strong understanding of modular design, software architecture, and secure coding practices. Familiarity with modern software security standards and concepts A hands-on mindset with a passion for problem solving, R&D, and thoughtfully applying new technologies after gaining a solid understanding of existing systems, code and architecture. Comfortable working in diverse teams and mentoring junior developers Exposure to modern UI technologies such as MAUI, Avalonia, or similar Experience in desktop and cross-platform application development Strong drive and readiness to grow into a technical leadership role Required Skills NET, C#, WPF, UI frameworks, MVVM, software architecture, secure coding, hands-on development, problem solving, R&D, applying new technologies, desktop application development, cross-platform application development. The Benefits Generous pension scheme. Holiday in advance. Salary to pension-conversion (löneväxling). Health care/rehab. Insurance. Wellness grant (5000 SEK) Competent coworkers, senior and junior. Flexible hours. “Förmånscykel” (through BusinessBike) GYM with PT/Health Coach-sessions (CityGate Omnia) Modern workspace located in Gothenburg’s tallest commercial building (CityGate) Meet The Team SystemWeaver HQ office @ CityGate Department Development Locations HQ Remote status Hybrid