Backend Developer (C#)

Job Role: Backend Developer (C#)

Job Location: Luxembourg

Experience: Mid-Senior Level

Work Type: Hybrid

Note: Not open for sponsorship case.

About Company:

At Synechron, we believe in the power of digital to transform businesses for the better. Our global consulting firm combines creativity and innovative technology to deliver industry-leading digital solutions. Synechron’s progressive technologies and optimization strategies span end-to-end Artificial Intelligence, Consulting, Digital, Cloud & DevOps, Data, and Software Engineering, servicing an array of noteworthy financial services and technology firms. Through research and development initiatives in our FinLabs we develop solutions for modernization, from Artificial Intelligence and Blockchain to Data Science models, Digital Underwriting, mobile-first applications and more. Over the last 20+ years, our company has been honored with multiple employer awards, recognizing our commitment to our talented teams. With top clients to boast about, Synechron has a global workforce of 14,700+ and has 55 offices in 20 countries within key global markets. For more information on the company, please visit our website or LinkedIn community .

Diversity, Equity, and Inclusion

Diversity & Inclusion are fundamental to our culture, and Synechron is proud to be an equal opportunity workplace and an affirmative-action employer. Our Diversity, Equity, and Inclusion (DEI) initiative ‘Same Difference’ is committed to fostering an inclusive culture – promoting equality, diversity and an environment that is respectful to all. We strongly believe that a diverse workforce helps build stronger, successful businesses as a global company. We encourage applicants from across diverse backgrounds, race, ethnicities, religion, age, marital status, gender, sexual orientations, or disabilities to apply. We empower our global workforce by offering flexible workplace arrangements, mentoring, internal mobility, learning and development programs, and more.

All employment decisions at Synechron are based on business needs, job requirements and individual qualifications, without regard to the applicant’s gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law.

Mandatory Experience:

• Software design
• SQL
• C# / .NET
• APIs
• Front-end basics
• End-user support.

Strongly Preferred:

• Experience administering a Learning Management System (LMS) — especially IMC Learning Suite (Scheer-IMC)
• Experience with Visual Studio, multi-branch DevOps workflows, and Azure (ideally AKS / containerized deployments via existing pipelines)
• Experience applying IT security considerations in software design
• Experience integrating custom code with a COTS (commercial off-the-shelf) software product
• Prior work in a multi-cultural, public-service, transport, or aviation-related organization
• French language ability (any level — higher is better; not required)
• Experience working in — or adjacent to — a corporate learning/training/e-learning context.

Profile We're Looking For:

• Mid-to-senior back-end developer, roughly 3–6+ years' professional experience, comfortable as the sole embedded developer on a client team rather than working within a large delivery squad
• Confident working directly with client stakeholders (training experts, non-technical end users), not just other engineers
• Able to commute to or be based near Luxembourg at least 50% of working time on an ongoing basis, after a fully on-site first month
• Comfortable joining an existing codebase and working under a client's own coding standards and technical lead, rather than driving their own architecture
• Stable, long-term availability — the client explicitly asks for continuity of the same person across the life of the contract (up to 5 years), so someone likely to rotate off after a few months is not a fit.

What We Need from You:

• CV, with C#/.NET, SQL, and REST API experience clearly dated (years/duration per skill, not just "familiar with")
• 2–3 concrete examples of past projects that demonstrate the mandatory skills above — ideally with specifics such as database designs, repo/commit history, screenshots, or API documentation the candidate personally produced (the client requires documented "Examples" per project, not just a skills list)
• Confirmation of willingness/ability to be based in or regularly travel to Luxembourg on the terms above.
• Availability date and confirmation of ability to commit to a multi-year engagement.