Software Development Engineer, C# – Electro-Optical Testing Line

HGH Systèmes Infrarouges SAS

. Join the software team within the Electro-Optical Testing R&D department .

Posted 10/12/2026full-timeIgny • FranceMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Proficient in C# and the .NET Framework, with experience in software development, debugging, and implementing communication protocols. Strong technical documentation skills and ability to collaborate across multidisciplinary teams are essential.

Highest-signal resume keywords

C# ProficiencyMicrosoft Visual Studio.NET FrameworkDebugging MethodologiesTechnical Documentation

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Software DevelopmentUnit TestingFunctional TestingReverse EngineeringRefactoring MethodologiesSignal Processing Knowledge

Soft Skills

CuriosityTeam CollaborationProactive Recommendations

Tools & Technologies

SVNWindowsLinux

Certifications & Qualifications

Master’s Degree in Software Engineering

Industry Keywords

Electro-Optical TestingR&DTechnical SupportProduct Roadmap

Tech Stack

Tools & technologies

LinuxSubversionGo

About the role

Key responsibilities & impact

Join the software team within the Electro-Optical Testing R&D department
Contribute to software development projects for new products and the evolution of existing products
Implement new features and fixes for existing software
Prepare the associated technical documentation
Write software specifications and verify their compliance with requirements
Write unit and functional tests
Implement new communication protocols
Contribute to defining the roadmap for software products during product reviews
Collaborate with project managers, mechanical, opto-mechanical, electronics and IT teams, as well as Production, Customer Support, Procurement, Sales, customers and suppliers
Follow a structured training program covering technologies, products and processes
Gradually provide technical support to the Production and Customer Support departments

Requirements

What you’ll need

Master’s degree in Software Engineering or a related field (five years of higher education)
At least 3 years of significant experience in a similar role
Proficiency in C#
Proficiency with Microsoft Visual Studio and the .NET Framework
Experience with Windows or Linux, depending on the projects
Experience with SVN
Proficiency in debugging, reverse engineering and refactoring methodologies
Strong written and spoken English is essential
Knowledge of signal processing is an advantage
Curiosity and a strong technical and scientific background
A strong interest in experimentation
Ability to make proactive recommendations and work effectively as part of a team

Benefits

Comp & perks

Profit-sharing and performance-based incentive schemes
Meal vouchers
RTT days
Sustainable mobility allowance
Works council benefits
Comprehensive health coverage (individual or family health insurance and disability/death benefits)
Possibility of working remotely up to 2 days per week
Free parking next to the company
Structured training program covering technologies, products and processes
Company seminar in Europe
Sports tournaments
Summer barbecue