> Markdown version of [/jobs/ext/2309974-3rd-line-engineer](https://www.wearedevelopers.com/jobs/ext/2309974-3rd-line-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# 3rd Line Engineer

- **Company:** ME AND EM LIMITED
- **Location:** London, UK
- **Contract:** Permanent contract
- **Skills:** Application Firewall, Microsoft Azure, Border Gateway Protocol, Cisco PIX, Cloud Computing, System Configuration, Disaster Recovery, Domainkeys Identified Mail, Domain-Based Message Authentication Reporting and Conformance (DMARC), Hyper-V, Identity and Access Management, Networking Hardware, Internet Protocol Security (IP SEC), Virtual Private Networks (VPN), Microsoft Office, Network Architecture, Network Monitoring, Open Shortest Path First (OSPF), Paessler Router Traffic Grapher, Windows PowerShell, Real-Time Operating Systems, Remote Access Technology, Phishing, Security Information and Event Management, Virtual Local Area Networks, Virtualization Technology, Software Vulnerability Management, Backup and Restore, Scripting, Transport Layer Security, Google Cloud, Load Balancing, System Availability, Firewalls (Computer Science), Sender Policy Framework (SPF), Information Technology, SolarWinds (Software), Microsoft Sentinel, Fortinet, Veeam, Splunk, Network Server
- **Published:** August 30, 2026
- **Apply:** https://www.collegerecruiter.com/job/2815442893-3rd-line-engineer

## About the Role

* IT-related degree or equivalent professional experience
 * CCNA or Microsoft Azure Administrator (AZ-104) certified - essential
 * Experience in a third-line, cloud, or network infrastructure role
 * Proven experience designing and implementing backup & disaster recovery strategies, with clearly defined RTOs and RPOs
 * Experience with backup and recovery tooling such as Veeam, Azure Site Recovery, or equivalent
 * Hands-on experience managing the full patch and vulnerability lifecycle, from scanning through to remediation and reporting
 * Experience configuring and administering email security gateways such as Mimecast, Proofpoint, or Microsoft Defender for Office 365, including SPF, DKIM, and DMARC
 * Advanced routing and switching knowledge including BGP, OSPF, VLANs, and QoS
 * Firewall administration experience with platforms such as Palo Alto, Fortinet, or Cisco ASA
 * Experience with network monitoring tools such as SolarWinds, PRTG, or equivalent
 * Strong understanding of VPN technologies including IPSec, SSL, and Always On VPN
 * Azure networking experience covering VNets, ExpressRoute, Azure Firewall, NSGs, and load balancers
 * Experience with Azure Policy and Defender for Cloud for security posture and compliance management
 * Proficiency in Entra ID including Conditional Access, Privileged Identity Management (PIM), and identity governance
 * Familiarity with SIEM platforms such as Microsoft Sentinel or Splunk - desirable
 * Working knowledge of data protection legislation including GDPR and practical implementation of compliance controls - desirable
 * Scripting or automation experience using PowerShell or similar - desirable

## Description

This role is critical for providing advanced technical expertise and knowledge within the IT team, ensuring the stability, reliability, and performance of IT systems and infrastructure within ME+EM., * Provide third-line technical support to resolve complex and escalated IT issues, including incidents and service requests, ensuring timely resolution and minimal disruption to business operations.

 * Own the end-to-end patch and vulnerability management lifecycle, from scanning and prioritisation through to remediation and reporting.
 * Hands-on experience configuring and administering enterprise email security platforms such as Mimecast, Proofpoint, or Microsoft Defender for O ice 365, including anti-phishing, anti-spoofing, DLP policies, and SPF/DKIM/DMARC implementation.
 * Design, implement, and continuously test enterprise Backup and Disaster Recovery strategies, ensuring procedures are clearly defined, documented, and validated through regular DR simulations.
 * Design, implement, and maintain IT infrastructure including servers, storage systems, networking devices, and virtualization environments, to ensure high availability, scalability, and performance to meet the growth needs of ME+EM.
 * Investigate and diagnose advanced software, hardware, and network problems, utilising expert knowledge of Azure, Google Cloud and Hyper-V infrastructure to troubleshoot and identify root causes and implement effective solutions.
 * Collaborate with second-line engineers, vendors, and other IT teams to resolve escalated issues, providing guidance and expertise as needed.
 * Lead and participate in IT projects, including system upgrades, migrations, and deployments, from planning and design to implementation and postimplementation support.
 * Develop and maintain technical documentation, including system configurations, procedures, and troubleshooting guides, to facilitate knowledge sharing and ensure compliance with regulatory requirements.
 * Provide mentorship and training to junior engineers, sharing expertise and best practices to enhance the overall technical capabilities of the team.
 * Stay abreast of emerging technologies, industry trends, and best practices, evaluating their potential impact and recommending innovative solutions to address business needs.


## Related Videos

- [Our journey with Spring Boot in a microservice architecture](https://www.wearedevelopers.com/videos/511-our-journey-with-spring-boot-in-a-microservice-architecture)
- [Azure-Well Architected Framework - designing mission critical workloads in practice](https://www.wearedevelopers.com/videos/1529-azure-well-architected-framework-designing-mission-critical-workloads-in-practice)
- [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure)
- [Checkmate: 5 Real Incidents That Can End a Software Company](https://www.wearedevelopers.com/videos/100126-checkmate-5-real-incidents-that-can-end-a-software-company)

## Related Articles

- [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers)
- [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market)
- [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london)
- [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk)
- [IT Salaries in UK](https://www.wearedevelopers.com/magazine/288-it-salaries-in-uk)
- [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries)