Senior Messaging Engineer - 3rd line - Exchange/Email Security

Job Title: Senior Messaging Engineer - 3rd line - Exchange / Email Security
Location: Hybrid - 2 days per week onsite in London or Leeds
Salary/Rate: Up to 250/day INSIDE IR35
Start Date: ASAP
Job Type: 9 month contract - very likely to extend
Company: Financial Services/Banking client

We are hiring for an SC Cleared Senior Messaging Engineer with strong third-line support experience, deep expertise in Exchange / email security, and the ability to design, improve, and stabilize complex messaging environments.

Key Responsibilities

• Implement, support, and enhance enterprise messaging and email security solutions
• Provide third-line support for messaging-related incidents and escalations
• Manage and improve Exchange Online and Exchange Hybrid environments
• Support and administer secure email gateways and encryption technologies
• Troubleshoot complex messaging issues and drive root-cause resolution
• Lead and contribute to initiatives aimed at simplifying and modernising email estates
• Mentor junior engineers and support first- and second-line teams
• Produce clear technical and user documentation
• Work across multiple workstreams, balancing competing priorities and deadlines

Essential Skills & Experience

• Strong experience with Exchange Online and Exchange Hybrid
• Proven background supporting secure enterprise messaging in complex environments
• Hands-on experience with email security gateways and encryption technologies
• Strong PowerShell scripting and automation skills
• Excellent troubleshooting and problem-solving abilities
• Strong written and verbal communication skills
• Experience mentoring and knowledge-sharing with wider support teams

Desirable Experience

• Experience with Mimecast and/or Clearswift
• Knowledge of email DNS and authentication (SPF, DKIM, DMARC, MX records)
• Experience with email encryption (PGP, TLS, PME)
• Exposure to email journaling and archiving solutions (e.g. Enterprise Vault)
• Experience migrating complex messaging environments to Exchange Online
• Familiarity with Agile delivery and sprint-based working
• Knowledge of ITIL processes (Incident, Problem, Change)

Apply now for immediate consideration