Senior C++ Software Engineer - Core Framework

Location: Remote (Berlin HQ - monthly visits)
Contract: 12 months (extensions likely)
Level: Senior

About the Role

We are looking for a Freelance Senior C++ Software Engineer to join a core platform team working on a production-grade medical device software system.

This role focuses on evolving and improving the underlying software framework, addressing architectural challenges, and ensuring the long-term sustainability of a complex system. You will work closely with experienced architects and senior engineers, contributing to design decisions, refactoring efforts, and platform-wide improvements.

Key Responsibilities

• Analyse and improve the existing software framework and architecture
• Identify and address design issues and technical debt
• Refactor and modernise legacy components for scalability and maintainability
• Contribute to and challenge architectural and design decisions
• Collaborate with senior engineers to ensure consistent design patterns and system coherence
• Maintain high standards of code quality, performance, and reliability

Required Experience

• Experience within medical devices
• Strong experience with modern C++ (ideally C++20)
• Solid understanding of software architecture and design principles
• Experience working with large, complex codebases
• Hands-on experience with:
  • Qt / QML (full stack exposure preferred)
  • Multithreading and system-level programming
• Strong knowledge of:
  • Design patterns
  • Modular architecture
  • Code refactoring strategies

Tools & Environment

• Qt Creator, VS Code
• QBS (nice to have)
• Perforce
• Jenkins
• JIRA

What Success Looks Like

• Ability to quickly understand complex systems and existing designs
• Strong design reasoning, beyond implementation
• Focus on long-term system sustainability
• Confidence contributing to architecture-level discussions

Ideal Profile

• Architecture-oriented C++ engineer
• Comfortable working with complex and evolving systems
• Strong focus on design quality and system evolution