Senior Software Engineer (C/C++)

Location: Remote from Germany or the United Kingdom

Base pay: £76,000–£120,000 per year

Company

nTop develops engineering software that uses programmable, parametric geometry to accelerate product design and enable exploration of thousands of design variants.

What you will do

• Re-architect and evolve the execution kernel toward the next generation of the modeling platform.
• Modernize an established C++ codebase with more than 100,000 files by reducing application-specific coupling and moving toward an open, service-oriented structure.
• Diagnose and resolve complex production issues involving memory, concurrency, and performance in a desktop application.
• Own technical direction through design discussions, code reviews, and architectural decisions.
• Collaborate with platform specialists and raise the team's standards for modernization work.

Requirements

• 5+ years of professional C/C++ experience with modern C++ standards, object-oriented design, and design patterns.
• Proven experience working with large-scale C++ codebases and diagnosing complex production problems.
• Deep understanding of memory management, multithreading, and performance optimization.
• Bias to action and the ability to work effectively in fragile, legacy, or ambiguous codebases.
• Technical leadership skills, including setting direction, driving change, and navigating engineering disagreements.
• Experience working with established development, testing, and QA practices.

Nice to have

• Software architecture modernization and migration from monolithic to distributed or service-oriented systems.
• Computational or algorithmic geometry, CAD, or engineering software experience.
• Compiler development, functional programming, legacy-code refactoring, or technical-debt assessment experience.
• SOA, microservices, API, or RESTful design experience.
• Working understanding of AI/ML systems and how to architect toward them.

Culture & Benefits

• Remote full-time role serving candidates in Germany or the United Kingdom.
• Opportunity to work on the next generation of a load-bearing modeling platform.
• Live collaborative coding interview allows the use of AI tools while discussing reasoning.
• The role reports to the Engineering Manager of the Build team.

Hiring process

• Recruiter screening followed by a conversation with the hiring manager.
• Final stage includes an extended technical session with live collaborative coding and a team-fit conversation.