Senior Infrastructure Engineer

• Significant experience in enterprise messaging systems, with a strong focus on Microsoft Exchange and Microsoft 365.
• Microsoft Certified: Exchange Online or Microsoft 365 Expert certifications with significant experience in managing a Microsoft Exchange environment (On-Premises, Online and Hybrid configurations).
• Proven ability to manage mail flow, transport rules, connectors, and security configurations as well as PowerShell scripting and automation.
• Strong understanding of Active Directory, Azure AD, and API integrations (Microsoft Graph, EWS, REST).
• Demonstrated ability to lead in complex technical initiatives and cross-functional teams with strong stakeholder engagement and ability to translate technical concepts into business outcomes with excellent problem-solving, communication, and documentation skills.
• Experience of other Microsoft 365 services (Purview, Teams, SharePoint, OneDrive).

You and your role

We’re looking for a Senior Infrastructure Engineer to take ownership of critical Microsoft messaging platforms that keep services running smoothly and securely at scale. You’ll lead the design and support of Exchange Online, Hybrid and on-premises environments, drive automation through PowerShell and APIs and help shape the future of Microsoft 365 messaging and compliance services.

This is a role for someone who enjoys solving complex technical challenges, influencing strategy and working closely with technical and business teams to deliver secure, resilient and high performing solutions. Alongside hands-on engineering, you’ll mentor others, champion best practice and play a key role in modernising enterprise messaging capabilities.

Pay up to £73,205 plus 28.97% employer pension contributions, hybrid working, flexible hours, and great work life balance., Hybrid Working: We work a hybrid model - you’ll spend some time working at home and some time collaborating face to face in a hub.

Pay: We offer competitive pay of up to £73,205

Pension: You’ll get a brilliant civil service pension with employer contributions worth 28.97%, worth over £16,000 per year.

Holidays: A generous leave package starting at 26 days rising to 31 days over time.

You can also take up to 3 extra days off a month on flexitime. You’ll also get all the usual public holidays.

We have a broad benefits package built around your work-life balance which includes:

• Flexible working including flexible hours and flex-friendly policies
• Time off volunteering and charitable giving
• Bring your authentic self to work with ‘I Can Be Me in DWP’
• Discounts and savings on shopping, fun days out and more
• Interest-free loans to buy a bike or a season ticket, so it’s even easier for you to get to work and start making a difference
• Professional development, coaching, mentoring and career progression opportunities.

And we have an award-winning environment and culture:

• DWP have been recognised as 2024 Diversity Employer of the Year at the Computing Women in Tech Excellence awards
• Diverse and Inclusive Leadership at Digital Leaders Awards 2024
• Commended as Best Place to Work in Digital category in the Computing Digital Technology Leaders awards 2025
• Recognised as one of the Best Public Sector Employers at 2025 Women In Tech Employer Awards

We are looking for outstanding Senior Infrastructure Engineers who are skilled in Microsoft Exchange and Microsoft 365 to join our community of tech experts in DWP Digital.

We’re using fresh ideas and leading-edge tech to build and maintain digital solutions that will be used by nearly every person in the UK, every day and at key moments in their lives.

DWP is the UK’s largest government department. We help people into work and make payments worth over £280bn a year to support and empower millions of people.

The scale of what we do is extraordinary, and our purpose is unique. We’d love you to join us.