OCU is seeking a proactive and technically driven Digital Security Engineer to join our growing Cyber Security team in Preston. Reporting to the Security Operations Manager, you will play a key role in designing, implementing and continuously improving security controls that protect OCU's cloud platforms, identity services, endpoints, networks and business systems across the UK, Australia and the US.
This is a hands-on engineering role focused on hardening environments, reducing cyber risk, driving vulnerability remediation and enhancing security capabilities across the Microsoft security ecosystem. Working closely with Security Analysts, Infrastructure, Cloud, IAM and Application teams, as well as our 24/7 managed SOC partner, you will build, maintain and optimise the security controls that safeguard OCU's digital estate around the clock.
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Design, implement and maintain security controls across cloud, endpoint, network and identity environments.
- Configure and optimise Microsoft security technologies including Defender XDR, Sentinel, Entra ID, Intune and Purview.
- Engineer secure identity and access management controls, including MFA, Conditional Access and privileged access management.
- Lead technical vulnerability remediation activities, implementing hardening, patching and risk reduction measures.
- Support cyber incident response and recovery activities through hands-on engineering expertise.
- Develop security standards, automation, documentation and repeatable engineering processes.
- Collaborate with technology teams to ensure secure-by-design principles are embedded across projects and services.
You'll have experience in a Security Engineer, Cyber Security Engineer, Cloud Security Engineer or similar role, with strong knowledge of Microsoft security technologies and modern security engineering practices. You'll be passionate about continuous improvement, proactive risk reduction and delivering high-quality security outcomes in a fast-paced, multi-region environment.
Desirable certifications include AZ-500, SC-200, SC-300, MS-102 or CompTIA Security+, alongside experience with vulnerability management tools such as Qualys, Tenable or SecurityScorecard.
At OCU Group, we don’t just deliver infrastructure - we help power modern life.
As one of the UK’s fastest-growing utility and infrastructure businesses, we deliver complex, nationally critical projects across power, energy transition, water, telecoms, and digital infrastructure. Over the last five years, OCU has grown five-fold to a £1.1bn organisation, expanding both organically and through strategic acquisitions across the UK, Australia, New Zealand and India.
Our growth is driven by ambitious people, operational excellence, and a commitment to doing things properly. We work on projects that genuinely matter by supporting the UK’s energy transition, strengthening essential infrastructure, and helping build more sustainable communities for the future.
Whether you’re an experienced professional looking to take ownership of major projects and influence delivery at scale, or someone starting your career through an apprenticeship, graduate programme, or placement route, OCU offers real opportunity to grow, develop, and make an impact.
We are building a business where high performance, collaboration, innovation, and accountability sit at the centre of our culture. Our people are trusted to lead, encouraged to challenge thinking, and supported to continuously develop their skills and careers.
At OCU, you won’t just join a growing business, you’ll help shape it.
Our Culture & Values
At OCU, our values are at the heart of everything we do. We care about safety, lead with integrity, strive to be better every day, make a positive impact, and deliver to grow, together, as One Company United.
Our Commitment to Inclusion
At OCU Group, we believe diversity, inclusion, and belonging are fundamental to building stronger teams, better ideas, and a more successful business. We welcome applications from people of all backgrounds and are committed to creating an environment where everyone feels valued and supported.
As part of our commitment to fairness and equality, candidates may be asked to complete an equal opportunities monitoring form during the recruitment process. This information is used for monitoring purposes only and plays no part in hiring decisions.
We are proud to be a Disability Confident employer and are committed to offering interviews to candidates with disabilities or long-term health conditions who meet the essential criteria for the role.
To ensure that everyone has a fair opportunity to join our team, please inform us if you require any reasonable adjustments to our recruitment and interview process is, by emailing
[email protected].
