At ABAKUS IT-Solutions we are looking for a Senior Windows Engineer with strong expertise in digital collaboration and end-user device management. You'll join a fast-paced, international IT environment where you'll play a key role in driving systems development, integration, and support of managed workstations across a large-scale infrastructure. This is a hands-on engineering position with both technical depth and strategic responsibilities.
Your responsibilities
Act as a subject-matter expert for managed client devices (Windows, MacOS, iOS) across their full lifecycle.
Diagnose and resolve complex Hardware/software issues, working closely with Level 1 and Level 2 support teams.
Define and manage technical requirements, including roadmaps for future development.
Lead the planning and coordination of upgrades, patches, and service interruptions, including with remote teams.
Drive systems integration and testing efforts, including system builds and environment configuration.
Design and maintain system documentation and change records.
Coordinate with security, infrastructure, and application teams to ensure seamless device management.
Provide Level 2/3 support and emergency on-site assistance when required.
Conduct root cause analysis and proactively implement improvements to prevent incidents.
Ensure 24/7 system reliability through effective monitoring policies and tools.
Your profile
Bachelor's degree in Computer Science, IT, Engineering, or related field with at least 2 years of relevant experience
OR at least 6 years of progressive professional experience in the absence of a degree.
Strong experience in large-scale Windows Server and Windows client OS management (10,000+ endpoints).
Proven experience with Microsoft ecosystem tools: Active Directory, DNS, DHCP, GPO, MECM/SCCM.
Experience with Intune, O365 administration, Teams, Exchange Online.
Deep understanding of security practices: PKI, data protection, least privilege, 2FA, AAA.
Practical experience in system integration, operation, maintenance, and configuration.
Experience in supervising technical staff and cross-functional collaboration.
Excellent communication and documentation skills.
Strong troubleshooting and problem-solving abilities.
Fluent in English (spoken and written); French is a plus.
Must be eligible for or already hold an active NATO-Secret security clearance.
What we offer
The opportunity to work on high-impact, mission-critical systems in a multicultural setting.
A stable, long-term project with opportunities for renewal or evolution.
A professional and supportive environment with a strong team culture.
Competitive compensation package tailored to your experience.
Are you ready to take the lead in secure, enterprise-level end-user device management?
Join ABAKUS IT-Solutions and be part of a team that drives innovation, reliability, and collaboration.