Senior IT Infrastructure Engineer

Relout is a place created by ambitious people with a passion for technology. We work for international projects and clients from various industries, helping startups, software houses, and enterprises to transform and scale their businesses. We’re a boutique consulting (https://relout.team) & technology (https://relout.cloud) partner that builds the foundation to scale for our client’s success. Our mission is to connect best-in-class, passionate engineers with fast-growing digital & technology companies.

We're looking for a Senior IT Infrastructure Engineer who will join a project in one of our strategic clients in the UK, supporting and developing central IT infrastructure across multiple sites. This is a senior, hands-on role with strong ownership over the Microsoft-based infrastructure in a complex, multi-site environment. You will be responsible not only for operations, but also for technical decisions, architecture, improvements and acting as the final L3 escalation point. You will work closely with the client’s Central IT Services team, local IT Managers, and external vendors on infrastructure operations, migrations, and automation initiatives, where fluent English communication is essential for daily collaboration.

The role follows the client’s (UK) time zone, with standard working hours of 10:00–18:00 Polish time.

🔷Responsibilities:

• Maintain and support central IT infrastructure across multiple sites and business units

• Act as an L3 escalation point, resolving complex incidents and technical issues

• Take end-to-end ownership of assigned systems, incidents, and projects

• Manage and support VMware-based infrastructure, ensuring high availability and performance

• Configure and maintain Microsoft 365 environment (Exchange Online, Entra ID, Intune, SharePoint)

• Administer and support Active Directory, Group Policy, and Windows environments

• Participate in and deliver infrastructure projects: migrations (e.g. to cloud / M365), modernization initiatives, system upgrades and improvements

• Collaborate closely with UK-based stakeholders, internal IT teams, and external vendors

• Monitor systems, troubleshoot issues, and ensure high uptime and reliability

• Identify opportunities for automation and standardization to improve efficiency

• Support security and compliance across infrastructure and services

• Participate in planned maintenance activities (including occasional out-of-hours work)

• Align working hours with the client’s (UK) time zone, ensuring availability during 10:00–18:00 Polish time to support ongoing collaboration and operations

🎯Requirements:

• 6–8+ years of commercial experience in roles such as Senior System Engineer, Senior SysAdmin, Infrastructure Engineer, or similar

• Proven experience supporting hybrid IT environments (on-premises + cloud)

• Strong hands-on expertise with VMware (ESXi, clustered environments) – must have

• Solid experience with Microsoft ecosystem – Microsoft 365 (Exchange Online, Entra ID, Intune, SharePoint), Active Directory & Group Policy, Windows Server (2016–2025) and Windows 10/11

• Strong knowledge of core infrastructure services – DNS, DHCP, NTP, networking fundamentals

• Experience working at L3 support level (troubleshooting, root cause analysis, escalations)

• Familiarity with enterprise infrastructure environments (servers, storage, virtualization, networking)

• Experience with monitoring and management tools (e.g. PRTG, SNMP, RMM tools)

• Understanding of identity management, SSO, and security best practices

• High level of ownership and accountability – ability to take full responsibility for systems and tasks end-to-end

• Fluent English communication skills (C1/C2) – must have, as the role involves daily collaboration with UK-based stakeholders

• Strong problem-solving mindset and ability to work independently

• Ability to create and maintain technical documentation

⭐What we offer:

• Flexible contract currency of your choice (PLN/EUR/GBP)

• Flexible work arrangements and remote work options

• Professional development and training opportunities

• Collaborative and inclusive work environment

• Regular company events and integrations (meetups)

• Unlimited legal advice & support with B2B partnership and self-employment

• Missing anything you like? Luxmed, Multisport? Ask us about it!

Apply now! Join the Relout Team today! 📢