Critical Software Development Engineer

GROUPE LR TECHNOLOGIES

. Analyze requirements and write software specifications (HLR/LLR) .

Posted 10/19/2026full-timeLes Ulis • FranceMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in developing SIL4 safety-critical embedded software for railway signaling systems, with a strong focus on requirements analysis, software specifications, and adherence to EN 50128 standards. Proficient in Ada and C/C++, with a rigorous approach to testing and documentation management.

Highest-signal resume keywords

SIL4 Safety-Critical Software DevelopmentAda ProgrammingC/C++ ProgrammingEN 50128 ComplianceV-Model Development Processes

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

Software SpecificationsUnit TestingIntegration TestingRequirements TraceabilityCode ReviewsDesign Reviews

Soft Skills

Rigorous ApproachMethodical Approach

Tools & Technologies

ERTMSSCADEDOORSColdFire ArchitectureARM Architecture

Certifications & Qualifications

Master's Degree in Computer ScienceMaster's Degree in Embedded Systems

Industry Keywords

Critical Software DevelopmentRailway Signaling SystemsVerification and Validation ActivitiesTechnical English Proficiency

Tech Stack

Tools & technologies

C++

About the role

Key responsibilities & impact

Analyze requirements and write software specifications (HLR/LLR)
Design and develop software components in Ada and C/C++
Perform unit and integration testing
Ensure requirements traceability and document management in accordance with the EN 50128 standard
Participate in code and design reviews
Support verification and validation activities
Develop SIL4 safety-critical embedded software for railway signaling systems and other critical systems
Work with ARM and ColdFire embedded processors as part of a project team

Requirements

What you’ll need

Master's degree (Bac+5) in computer science or embedded systems
Proven experience in critical software development, ideally under EN 50128 (SIL4) or DO-178C (DAL A)
Proficiency in Ada and/or C/C++
Strong knowledge of V-model development processes, including requirements, traceability, and reviews
Technical English proficiency required
Knowledge of ERTMS, SCADE, DOORS, or ColdFire/ARM architectures would be a strong advantage
Rigorous and methodical approach
Available to start in early November

Benefits

Comp & perks

Great Place to Work-certified company
ECOVADIS-labeled company