C++ Software Engineer / UI M/F

The accompanied company and the missions:

The company and the context: This international high-tech company specializes in the development of advanced solutions for securing and protecting digital content. Its technologies are used by major players in the media and entertainment sector to secure the broadcasting of high-value content. With over twenty years of innovation, this company designs complex solutions integrating algorithms, media processing, and multi-environment software platforms. As part of strengthening its R&D team, it is currently looking for a UI-oriented Software Engineer, capable of providing true expertise in interface design while maintaining a strong low-level development foundation. This is a strategic position in a human-sized team, where the technical impact is direct and visible.

The position and the missions: You will join an agile development team working on complex software solutions used internationally. The position combines a technical UI / UX dominance (70 to 80%) with an algorithmic development component. Your responsibilities include notably:

• Contributing to the design and evolution of existing (and future) user interfaces and improving the product experience,
• Defining, with the product and technical teams, ergonomics, user journeys, and functional design,
• Actively participating in UI architecture choices for standalone applications and web services,
• Providing expertise on front-end development best practices and UI engineering,
• Helping to increase the UI skill level of the team,
• Participating in the implementation and improvement of watermarking algorithms in C/C++,
• Contributing to validation automation via Python,
• Intervening on issues of performance, robustness, and software quality,
• Collaborating on Linux / Windows environments,
• Working closely with the Product Manager and development teams,
• Participating in daily technical exchanges in a cross-functional logic,
• Supporting clients and partners in the integration of solutions, etc.

Profile:

What you bring: You have at least 3 years of experience in software development, with significant experience in user interface issues. We are primarily looking for someone capable of providing a true expert perspective on UI in a team where this skill is currently underrepresented.

Expected skills:

• Ideally, you master C/C++ and have good practice with Python. Knowledge of JavaScript is expected for UI/web topics.
• You have a minimum of 2 years of solid experience in the design and development of user interfaces, whether on desktop, web, or hybrid applications.
• No specific framework is required: the important thing is your ability to structure, design, and make the right technical choices.

Pluses:

• Experience in watermarking
• Audio/video processing (FFmpeg, codecs, media pipelines…)
• Cloud solutions (AWS)
• Experience in an international environment

Regarding soft skills, we are looking for a dynamic and proactive person, technically curious. You want to learn and help the team progress. You are able to take a step back from UI/product choices. You are comfortable in a small team where exchanges are direct and fast. For this position, professional English is indispensable, and the icing on the cake would be Spanish skills (collaboration with a team based in Spain).

Benefits:

Working conditions:

• Location: Rennes Est (near metro)
• Proximity to public transport
• Company backed by a large group, international context with possible mobility
• 1 day of teleworking (or more)
• Flexible hours
• Salary up to 50K€ depending on your experience

What you will gain:

• A challenging environment
• A stimulating position in which you can flourish and contribute your part to the building
• Mentoring, training, and expertise development
• Rich exchanges in projects within autonomous teams
• Innovative, concrete products, with many stakes and significant market visibility

Recruitment process:

• A first exchange with Nicolas from Externatic
• A technical interview with your future manager
• A second HR interview