IT Infrastructure Specialist

BT Security; Hemel Hempstead; On-site; GBP 40,000 - 60,000; Full time

Job summary

A leading telecommunications company is looking for an IT Infrastructure Designer to enhance security operations in Hemel Hempstead. Candidates must obtain DV security clearance and have experience in designing and maintaining IT infrastructures. This full-time role offers a competitive salary, a bonus, and a range of flexible benefits to ensure a strong work-life balance.

Benefits

Competitive salary

10% on target bonus

BT Pension scheme

25 days annual leave

Flexible benefits including healthcare and retail discounts

World-class training and development opportunities

Qualifications

• Hands-on experience in the design, build, development, integration, testing and maintenance of IT infrastructure.
• Implemented hardware and operating systems to hardened build standards.
• Experience with SAN storage solutions is a plus.

Responsibilities

• Design and maintain robust customer on-premise platforms.
• Implement design changes and updates to products.
• Produce high and low level design documentation.

Skills

Experience in design and development of IT infrastructure

VMware infrastructure design skills

Advanced knowledge of Windows Server

Tools

Vulnerability and compliance scanning tools

MDT and SCCM

Job description

Recruiter: Krystle James

Career Grade: D

Internal Closing Date: 28/11/25

#BTSEC25

Due to the sensitive nature of this role, you will be required to undergo DV (Developed Vetting) level Security Clearance ( https://www.gov.uk/government/publications/united-kingdom-security-vetting-clearance-levels/national-security-vetting-clearance-levels ). An allowance of £5k per annum may be payable monthly while you hold this DV and continue to work in a role that requires that level of security clearance. The terms of this allowance will be made available if you are successful in being recruited into this role.

Security isn’t always the first thing that comes to mind when you think of BT, but when it comes to keeping everyone safely connected, We Are The Protectors. We deal with thousands of cyber-attacks every day, so that millions of people can safely go about their daily lives and run their businesses. We deliver vital work at scale, with real breadth and impact. We connect for good.

You’ll be joining a specialist security team that is a trusted partner to governments worldwide, protecting critical national infrastructure and committed to the safety and security of our nation and global communities. Our mission focused work is innovative, inspiring and technologically challenging in a way that makes every day different and stimulating. We provide the opportunity to work on rare projects, with exciting tools and brilliant people. Everyone has access to unparalleled professional and personal development opportunities and your contribution is always valued.

This job role can be based in Hemel Hempstead or Chippenham. Onsite (5 days office based). Monday-Friday (37.5 hours per week). You must be able to obtain DV clearance in order to start this role. You will need to have lived in the UK for 10 years+ to obtain this.

What you’ll be doing

• Be hands on in the design, build, development, integration, testing and maintenance of IT infrastructure to provide a robust customer on-premise platform.
• Identifying and implementing design changes, improvements and updates required to keep products within supportability lifecycles
• Utilising your experience in physical and virtual host infrastructures to ensure a resilient platform for hosted applications
• Producing of High and Low level design documentation and build guides
• Executing against the project technical roadmap and delivery plan
• Undertaking self-development to broaden knowledge in new technologies outside current skillsets

You’ll definitely have

• Hands on experience in the design, build, development, integration, testing and maintenance of IT infrastructure
• Implemented hardware and operating systems to hardened build standards and used vulnerability and compliance scanning tools
• VMware infrastructure design, implementation and deployment skills
• Advanced knowledge of Windows Server & Desktop including specification, operating system builds, deployment toolsets (such as MDT, SCCM), OS version uplifts and migration

You might even have

• Experience with SAN storage solutions and networking
• IP network design including Juniper, Cisco configuration
• Experience in use of Advanced Microsoft Active Directory including Group Policy definition and deployment, including OS and application integration
• Integration with other supporting systems such as monitoring, patch update and Anti-Virus
• PKI infrastructure design, build & deployment
• MS SQL database skills including design, deployment, high availability, version migration
• Ability to perform SAN storage implementation, configuration and systems upgrade
• Built & deployed Network and Infrastructure management & monitoring tools with strong knowledge of SNMP, syslog & IP networking, with OS and network troubleshooting skills

Benefits

• Competitive salary
• 10% on target bonus (Depending on country based)
• BT Pension scheme, minimum 5% Employee contribution, BT contribution 10%
• On-call allowance (Depending on role requirements)
• 25 days annual leave (not including bank holidays), increasing with service
• Huge range of flexible benefits including cycle to work, healthcare, season ticket loan
• World-class training and development opportunities
• From January 2025, equal family leave: receive 18 weeks at full pay, 8 weeks at half pay and 26 weeks at the statutory rate. It’s for all parents, no matter how your family is made up.
• Enhanced women’s health support: including help with menopause symptoms, cancer screenings, period care and more.
• 24/7 private virtual GP appointments for UK colleagues
• 2 weeks paid carer’s leave
• World-class training and development opportunities
• Option to join BT Shares Saving schemes.
• Discounted broadband, mobile and TV packages
• Access to 100’s of retail discounts including the BT shop

#LI-Onsite

Security is one of the fastest growing parts of our global organisation. We are protecting our networks from more than 6,500 cyber attacks each day, investing over £40m in research each year – and in employing nearly 3,000 people, we’re also the largest private cyber employer in the UK. With incredible opportunities to learn, develop and grow your skills, we’ll invest in you, nurture your potential and shape your future – whatever your background or experience.

In today’s world, safe and secure digital connections have never been more vital. You’ll be joining a global company operating at the forefront of the information age: BT employs 90,000 people in 180 countries. With huge scale, we’re capable of achieving great things, striving to be personal, simple, and brilliant for our customers whilst creating an inclusive working environment where people from all backgrounds can succeed. Play your part. Make a difference. We are the Protectors.

A FEW POINTS TO NOTE:

Although these roles are listed as full-time, if you’re a job share partnership, work reduced hours, or any other way of working flexibly, please still get in touch.

We will also offer reasonable adjustments for the selection process if required, so please do not hesitate to inform us.

DON’T MEET EVERY SINGLE REQUIREMENT?

Studies have shown that women and people who are disabled, LGBTQ+, neurodiverse or from ethnic minority backgrounds are less likely to apply for jobs unless they meet every single qualification and criteria. We’re committed to building a diverse, inclusive, and authentic workplace where everyone can be their best, so if you’re excited about this role but your past experience doesn’t align perfectly with every requirement on the Job Description, please apply anyway – you may just be the right candidate for this or other roles in our wider team.