Infrastructure Engineer

G-NIUS; England; On-site; GBP 80,000 - 100,000; Full time

Job summary

A large public sector organisation is seeking an experienced Infrastructure Engineer to deliver high-quality 2nd & 3rd line support. This onsite role in East Sussex involves managing network and server infrastructure, and supporting complex domain migrations. Candidates should have proven experience in a large-scale environment, strong knowledge of Microsoft Active Directory, and robust troubleshooting skills. The contract offers a competitive day rate of £220, working full-time for 6 months with potential for extension.

Benefits

Competitive day rate

Opportunity to work on impactful projects

Exposure to large-scale infrastructure

Qualifications

• Proven experience in 2nd & 3rd line infrastructure support.
• Strong knowledge of Microsoft Active Directory and domain migrations.
• Solid understanding of network architecture including LAN/WAN.

Responsibilities

• Provide 2nd & 3rd line technical support for infrastructure services.
• Support planning and post-migration support of domain migrations.
• Troubleshoot and resolve technical issues during migration activities.

Skills

2nd & 3rd line infrastructure support

Microsoft Active Directory

Network architecture

VMware

Windows Server environments

Documentation

Communication

Stakeholder management

Tools

Active Directory

VMware

Call logging systems

Job description

My client, a large public sector organisation, is seeking an experienced Infrastructure Engineer to deliver high-quality 2nd & 3rd line support across a wide and complex IT estate, this role being onsite in East Sussex.This is a fantastic opportunity to play a key role in domain migrations and infrastructure projects while ensuring critical services remain stable, secure, and reliable.

Your Role

Key Responsibilities:

• Provide 2nd & 3rd line technical support for network, server, and infrastructure services.
• Support the planning, execution, and post-migration support of complex domain migrations (including Active Directory and related technologies).
• Configure, install, repair, and maintain high-value IT equipment to maximise availability and performance.
• Troubleshoot and resolve technical issues during and after migration activities, ensuring minimal disruption to business operations.
• Work with third-party suppliers and internal stakeholders to deliver robust technical solutions.
• Maintain detailed documentation of systems, configurations, and processes to support compliance and knowledge sharing.
• Contribute to infrastructure improvement projects, recommending and implementing changes in line with best practice and organisational objectives.
• Supervise and mentor junior engineers when required, sharing specialist knowledge and technical expertise.

Essential Requirements

• Proven 2nd & 3rd line infrastructure support experience in a large-scale environment.
• Strong knowledge of Microsoft Active Directory and domain migrations.
• Solid understanding of network architecture, including LAN/WAN and enterprise wireless infrastructure.
• Hands-on experience with VMware and Windows Server environments.
• Ability to analyse and resolve complex technical issues independently.
• Strong documentation, communication, and stakeholder management skills.
• Flexibility to work onsite across multiple sites within East Sussex.

Desirable:

• Experience working within the public sector or healthcare environment.
• Knowledge of call logging systems and working to SLAs.
• Familiarity with thin client technologies and Windows OS upgrades.

What’s on Offer

• Day Rate: £220 p/d via Umbrella (Inside IR35).
• Contract: 6 months with potential for extension.
• Working Pattern: Full-time, onsite, 37.5 hours per week.
• The opportunity to work on impactful infrastructure projects in a fast-paced environment.
• Gain exposure to large-scale domain migrations and high-value technical infrastructure.