Infrastructure Engineering Specialist

Recruiter: Lloyd Hughes
Career Grade: D
Closing Date: 31/07/2026

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.

About the role

Our team develop, maintain and operate big data platforms for one of our major customers. Comprised of big data storage platforms like Apache Hadoop and Ceph, OpenSearch and Elasticsearch, and a significant number of in-house developed applications in pyspark, scala and other languages to simplify our user’s interactions with the platform. These are built on a large remote Linux (predominantly) estate. The platform supports a suite of tools for storing, enriching, querying and visualising large amounts of data. The requirements can change at short notice, so the team uses a DevOps methodology to react to these changes and continue to provide the best customer service.

This role requires DV Clearance and will be onsite 5 days a week in either London or Ipswich.

What you’ll be doing

• Responsible for 24 x 7 platform support including ongoing monitoring enhancements via scripting of custom tests and deployment/adaptation of built-in monitoring.
• Manage project relationship with 24x7 monitoring teams both internal and external.
• Monitoring and tracking platform performance and power utilisation.
• Strong Communication skills working with individuals and teams at all levels (up to CTO and senior customers).
• Producing and delivering training for the platform support teams. Onboarding new members of the support team.
• Work closely with customers and internal stakeholders to plan outages and platform support & availability reporting including equipment and service upgrades whilst maintaining minimal if not zero outage deployments/upgrades.
• Production of monthly platform reports, tailored to customers evolving requirements.
• Ownership of thousands of assets across full lifecycle from order to decommissioning and destruction.
• Deliver future site expansion capability – Managing deliveries across multiple sites and building the hardware and software stacks to evolving designs.
• It is a requirement to work as part of the on call 24/7 rota, 1 week in 4.

Essential Skills / Experience

• Excellent Communication skills.
• Ability to work to strict time constraints due to Customer priorities.
• Ability to multitask due to rapidly changing priorities.
• Server hardware installation/maintenance/management.
• Linux Admin (rocky).
• Proxmox (including HA and Ceph stores).
• (python/scala) Spark. Ceph and/or HDFS.
• OpenSearch/Elasticsearch cluster management.Operating system and firmware patching.
• Ability to critique design documents to improve outcomes or understand limitations where required.

Desirable Skills / Experience

• Network design/implementation (Cisco ASA/FTD and Dell OS10/SONIC).
• Check MK (nagios) administration and monitoring. including Nagvis and Business Intelligence (BI) development.
• Windows Domain Admin (server 2022+).
• MariaDB (multi-site replication, including active-active).
• Knowledge of hardware/software based data boundary enforcement (diodes). Automated testing (Cypress & pytest) within CI/CD pipelines.
• Python3/4.

Our Package

Tailored benefits make a real difference. That’s why we offer a comprehensive range to support your growth, wellbeing, and everyday life.

You can design the package to suit you and your lifestyle. Your core benefits include:

• 10% on target annual bonus

• Access to an online private GP 24/7 for you and your immediate family

• Market-leading paid carers leave with up to 2 weeks off

• Equalized maternity, paternity, and adoption leave – 18 weeks’ full pay and 8 weeks’ half pay

• Discounted EE and BT products, including mobile and broadband

• Market leading Pension scheme – 5% from you and 10% from us

• Holiday purchase scheme

You can select additional benefits, including healthcare, dental, gym memberships and more when you’re ready.

Ready to connect for good and help shape the future? Apply now

#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.