Senior Software Engineer – C++/ C# Migration and Test Automation

Sigma Group; Lunds kommun; On-site; SEK 550,000 - 900,000; Full time

Job summary

Sigma Industry Evolution in Lund, Sweden is seeking an experienced Software Engineer to migrate C++ functionality to C# and to develop automated tests within an established product environment.

You will analyze existing C++ code, ensure functional equivalence, verify on product units, and collaborate with verification teams and system engineers. Experience with embedded systems or regulated environments is a plus.

Qualifications

• Strong experience with C# development.
• Good knowledge of C++ and understanding of existing C++ codebases.
• Experience migrating or translating functionality between programming languages.
• Experience developing automated tests.
• Experience working with legacy software and established product platforms.
• Experience with software verification, debugging and troubleshooting.
• Ability to work independently and take responsibility for analysis, implementation and verification.
• Experience in embedded systems or regulated environments is an advantage.

Responsibilities

• Review and analyse existing C++ source code.
• Understand dependencies and purpose of legacy software components.
• Design and implement functionality in C#.
• Ensure functional equivalence between old and new solutions.
• Verify functionality on existing product units.
• Develop automated tests based on established protocols.
• Analyse test results and investigate deviations.
• Troubleshoot software and system-level issues.
• Document implementations, test coverage and verification results.
• Collaborate with developers, system engineers and verification teams.

Skills

C# development

C++ knowledge

Software migration

Test automation

Legacy software

Verification

Troubleshooting

Independent work

Embedded systems

Job description

We are looking for an experienced Software Engineer for an assignment focused on software analysis, migration, verification and test automation within an established product environment.

The assignment involves understanding existing C++ implementations, developing corresponding functionality in C# and ensuring that the new solutions behave correctly on existing product units.

Responsibilities

Your responsibilities will include:

• Reviewing and analysing existing C++ source code.


• Understanding the behaviour, dependencies and purpose of legacy software components.


• Designing and implementing corresponding functionality in C#.


• Ensuring functional equivalence between existing and newly developed solutions.


• Verifying software functionality directly on existing product units.


• Developing automated tests based on established test protocols and test methods.


• Analysing test results and investigating deviations.


• Troubleshooting software and system-level issues.


• Documenting implementations, test coverage and verification results.


• Collaborating with software developers, system engineers and verification teams.

Your background

We believe you have:

• Strong experience in C# development.


• Good knowledge of C++ and the ability to understand existing C++ codebases.


• Experience migrating, translating or recreating software functionality between programming languages.


• Experience working with legacy software and established product platforms.


• Experience developing automated tests.


• The ability to translate existing test protocols and manual test procedures into automated test solutions.


• Experience with software verification, debugging and troubleshooting.


• The ability to work independently and take responsibility for analysis, implementation and verification.

Experience from embedded systems, regulated industries, medical technology or other environments with high requirements for quality, traceability and verification is considered an advantage.

#LI-IK1 #SIE

Who you are

You are analytical, structured and solution-oriented. You are comfortable working with existing systems and can identify how legacy functionality should be implemented in a modern software environment. You take ownership of your work, communicate clearly and maintain a strong focus on quality throughout development and verification.

Senior Software Engineer – C++/C# Migration and Test Automation

Company

Sigma Industry Evolution

Location

Lund, Sweden

Competence area

Software development embedded systems, Software development

2026-09-03

2026-09-26