Infra Security Engineer – Backup, Firewall & AD Remote UK

Dentro Talent Ltd; United Kingdom; Remote; GBP 74,000 - 83,000; Part time

Job summary

Dentro Talent Ltd. is seeking an experienced Infrastructure Engineer for a 6-month contract (Outside IR35) to support a UK-based client. The role focuses on security-centric core infrastructure across MS Server, on-prem, and Azure environments.

You will lead Back Up and Recovery improvements, define firewall standards, and prepare AD readiness, including Domain Controllers, DNS and replication. Strong troubleshooting and hands-on MS Defender Firewall experience are essential.

Qualifications

• Extensive experience in MS Server administration and engineering.
• In-depth knowledge of Active Directory Domain Services (Domain Controllers, DNS, replication).
• Experience with AD upgrades and Defender Firewall configuration.
• Proven ability to test backups and disaster recovery procedures.

Responsibilities

• Oversee Back Up and Recovery testing and improve recovery procedures.
• Review and standardise server firewall configurations and implement a phased plan.
• Assess AD forest/domain config, uplift where needed, and validate changes.

Skills

Windows Server

On-Prem Infrastructure

Azure

Active Directory

Defender Firewall

Backup and Recovery

Security

Job description

Dentro Talent Ltd. is seeking an experienced Infrastructure Engineer for a 6-month contract (Outside IR35) to support a UK-based client. The role focuses on security-centric core infrastructure across MS Server, on-prem, and Azure environments.

You will lead Back Up and Recovery improvements, define firewall standards, and prepare AD readiness, including Domain Controllers, DNS and replication. Strong troubleshooting and hands-on MS Defender Firewall experience are essential.