Senior 3rd Line Engineer -MSP

Ashdown Group; Borehamwood; Hybrid; GBP 55,000 - 65,000; Full time

Benefits offered by this job

Hybrid working pattern

£3k annual certificate budget

Competitive benefits

Job summary

Ashdown Group is seeking a Senior 3rd Line Engineer for a growing MSP. The role demands solving complex incidents and mentoring the support team in a hybrid office setting near Barnet/Watford. You will drive NinjaOne RMM deployment, own M365/Intune/CA/Exchange/Azure AD, and collaborate with tech leadership to advance diagnostics and automation across the estate.

The package includes £55,000–£65,000 salary plus a £3k annual certificate budget and competitive benefits.

Qualifications

• 3rd line experience within an MSP.
• Expert M365 (CA, Intune, hybrid Exchange, ATP).
• Strong troubleshooting methodology and confident communicator.

Responsibilities

• Act as the top-tier escalation point for complex incidents.
• Lead rollout and optimisation of NinjaOne RMM (automation, alerting, remediation scripting).
• Own M365, Intune, Conditional Access, hybrid Exchange, and Azure AD/Entra.
• Mentor engineers in diagnostic methodology.
• Work closely with technical leadership - no non-technical managers blocking decisions.

Skills

3rd line support

M365

PowerShell

Azure AD/Entra

NinjaOne

Datto RMM

Firewall expertise

Troubleshooting

Effective communicator

Education

Microsoft Certifications

Tools

NinjaOne

Datto RMM

PowerShell

Azure AD/Entra

Job description

Our client, a growing, technically driven MSP that’s investing heavily in automation and next generation technology require a Senior 3rd Line Engineer. This is a pivotal role within the company and will require someone who can provide solutions for complex 3rd line issues whilst mentoring other team members within the support team.

The role is offered with a hybrid working pattern and is based at the company’s offices which are easily accessible for the Barnet/Watford areas.

Key responsibilities

• Act as the top-tier escalation point for complex incidents
• Lead the rollout + optimisation of NinjaOne RMM (automation, alerting, remediation scripting)
• Own M365, Intune, Conditional Access, hybrid Exchange, and Azure AD/Entra
• Mentor engineers in diagnostic methodology
• Work closely with technical leadership - no non-technical managers blocking decisions

Role requirements:

• Must have 3rd line experience within an MSP
• Expert M365 (CA, Intune, hybrid Exchange, ATP)
• Strong troubleshooting methodology
• Confident communicator at all levels
• Full Microsoft Certificates desirable
• NinjaOne/Datto RMM config
• Azure infrastructure
• Firewalls (Fortinet, SonicWall, Draytek)
• Solid PowerShell skills

The role is offered with a salary of between £55,000 - £65,000 + £3k annual certificate budget plus competitive benefits.