Senior Software Developer (m/w/d) - Windows

IT-Systemhaus der Bundesagentur für ArbeitRegensburg

Stellenbeschreibung:

Senior Software Developer (m/w/d) - Windows

Beginn

We are seeking a Senior Software Developer to enhance our Windows application, a secure document editing and collaboration platform. In this role, you will be a hands‑on technical developer responsible for designing and building scalable systems, making sound technical decisions, and collaborating effectively with team members.

What you’ll do

Core Development

Design and develop new features for the Windows client application using modern .NET technologies
Build and maintain desktop applications that handle file management, application launching, and session lifecycle management
Implement security features including argument validation, secure file handling, and authentication integration
Optimize application performance and reliability in enterprise environments
Design and implement scalable application architecture for Windows client deployments
Apply service‑oriented patterns and dependency injection for maintainability and extensibility
Create reusable components and libraries for document handling and session management
Evaluate and recommend technology solutions for new features

Integration & Deployment

Develop installer packages and deployment automation for enterprise distribution
Implement integration with server‑side components and cloud services
Build custom installation logic and system validation checks
Ensure compatibility with enterprise Windows environments and Group Policy configurations

Quality Assurance & Testing

Write comprehensive unit and integration tests to ensure code quality and reliability
Develop automated testing strategies covering multiple scenarios
Participate in code reviews and knowledge sharing with team members
Participate in security reviews and threat modeling

Technical Collaboration

Communicate technical decisions and architectural rationale to team members and stakeholders
Partner with product and security teams to translate business requirements into technical solutions
Share knowledge and best practices through documentation and technical discussions
What you’ll bring
- 7+ years of professional software development experience
- Strong understanding of application lifecycle management and deployment strategies
- Experience with version control systems and collaborative development workflows
- Proven track record delivering production‑grade enterprise software
- Proficiency in C# and modern .NET framework development
- Experience with Windows application development, UI frameworks, and Windows API integration
- Understanding of installer and packaging technologies
- Knowledge of security principles for desktop applications (encryption, secure storage, input validation)
- Experience with automated build and deployment systems
- Solid grasp of testing frameworks and testing methodologies
- Strong problem‑solving and debugging abilities
- Clear communication and documentation skills
- Ability to take ownership of complex features and drive them to completion
- Self‑motivated with strong attention to detail
- Experience working in Agile development environments
- Technical depth combined with strong problem‑solving abilities
- Ability to balance architectural vision with practical delivery timelines
- Collaborative approach to working with cross‑functional teams
- Proactive approach to identifying and resolving technical risks
- Passion for building products that solve real business challenges
Nice to Have
- Knowledge of Windows Server deployment and management
- Background in security‑focused software development
- Experience with PowerShell scripting and system automation
- Understanding of document management systems or content collaboration platforms
- Experience with enterprise authentication systems (Active Directory, SAML, OAuth)
- Knowledge of RDP (Remote Desktop Protocol) or Terminal Services
- Experience building cross‑platform applications
- Familiarity with CI/CD pipeline development