Software Engineer(C/C++)

At Tech Soft 3D, we’re on a mission to Fuel Innovation. Empowering developers with intuitive, frictionless SDKs that let them build powerful engineering software, without reinventing the wheel. We are looking for our next Software Engineer II (C/C++) to join our Engineering team.

In this role, you will help maintain and enhance our HOOPS Visualize Desktop and Mobile SDKs, working within mature, widely used codebases that power advanced CAD and visualization applications across industries. This role is ideal for an engineer who enjoys solving complex problems within established systems, with a strong focus on debugging, stability, and continuous improvement. You will work as part of an international Scrum team, collaborating with colleagues across Europe and the US.

This position is based in Europe and is ideally suited to candidates who can work on-site or in a hybrid arrangement near one of our offices in Lyon (France) or Sophia Antipolis (France), Skoppum (Norway), or Tamworth (UK). Remote work may be exceptionally considered within the CET ±1 time zone What You’ll Do

Maintain and improve a large C/C++ codebase with a focus on robustness, performance, and long-term maintainability

Diagnose and resolve complex issues across rendering, data processing, and platform-specific behavior

Investigate and improve rendering pipelines, addressing visual artefacts and inconsistencies across platforms

Contribute to incremental feature development and enhancements

Collaborate in an Agile Scrum team across planning, development, and review cycles

Contribute to product quality through unit, functional, regression, visual, and performance testing

Improve developer workflows and enhance documentation to support internal teams and SDK users

Work closely with other engineering teams, the product owner, and other stakeholders

Ensure our SDKs remain reliable for customers building demanding CAD and visualization applications

Exemplify the Core Values of Tech Soft 3D on a consistent basis What We’re Looking For

MSc degree in Computer Science (or equivalent experience).

3 + years of professional experience in C and C++ software development, including debugging in large existing codebases.

Solid computer science fundamentals (such as data structures, algorithms, memory management, and debugging methodology).

Practical understanding of 3D graphics fundamentals and rendering concepts.

Experience with graphics APIs such as OpenGL, Metal, or Direct3D 11.

Comfortable working with the ambiguity typical of legacy systems, such as reading code, isolating issues, and making safe changes.

Some experience and general curiosity about how AI tools can boost productivity and quality in software development.

Professional working proficiency in English.

Bonus Points If You Have

Interest in scientific and CAD-related workflows.

Experience with modern graphics APIs such as Vulkan, Direct3D 12, or Metal.

Multi-platform development experience across Windows, macOS, Linux, iOS, or Android.

Experience with build systems and development tooling such as CMake, Conan, Git, and CI/CD pipelines (e.g., GitHub Actions).

Familiarity with CAD and AEC/BIM concepts and workflows.

Experience with C#, SLANG, cross-platform architecture patterns, or AI-assisted development

French language skills.

Reasons to Not Apply We believe in matching great talent with the right roles. You might want to pass on this opportunity if:

You prefer a slow-paced environment that resists change

You expect rigid job boundaries and minimal cross-team collaboration

You’re uncomfortable working across global time zones or adapting to evolving priorities

You prefer highly structured oversight over autonomous, results-driven work

You don’t like to have fun!

Benefits and Other Cool Stuff Our employees enjoy a robust benefit package, health coverage, bonus potential, generous paid time off and holidays, and parental leave.

Additional country-specific benefits apply, including pension schemes where relevant.

Not to mention the perks you get as a “Techsoftian”: a collaborative and inclusive environment, strong leadership, continuous learning opportunities, flexible schedules, charitable donation matching, home office support, and an employee recognition program with global rewards. The salary for this role is based on a combination of factors, including experience, education, and any special skills or expertise you bring. For individuals located in France, the pay range is €45.000 - € 55.000 per year

Our work reaches almost every part of the world. As one of our Founders, Ron Fritz, states:

“You almost can’t walk down the street and see a man-made thing that somehow hasn’t been touched by Tech Soft 3D technology.”

Meet our people: https://www.youtube.com/watch?v=7pJMdhYuJtc

What are you waiting for? Apply now! Location

Lyon (Hybrid)

Department

Visualize

Employment Type

Full-Time

Minimum Experience

Mid-level

Compensation

€45.000 - € 55.000 per year