Senior Security Engineer - UK

As a Senior Security Engineer, you'll take ownership of how we safeguard our digital platforms, identifying, assessing, and responding to security threats, and lead the way we harden systems at scale. You'll play a critical part in maintaining the integrity of our systems and the trust of our customers, while mentoring others and helping shape how the team operates.

Reporting to the Detection and Response Lead, this is a hands-on role that blends technical depth with time zone local operational responsibility.

What you'll be doing…

• Conduct security audits and assessments across platforms and infrastructure.
• Implement and maintain security monitoring, alerting, and reporting mechanisms.
• Lead incident response activities, including simulations and real-time investigations.
• Lead cross-functional efforts to harden systems and drive timely remediation of security updates.
• Monitor threat intelligence sources (including NCSC) and assess potential impacts.
• Lead vulnerability management end-to-end, including triage, analysis, and remediation, and continuously improve the processes behind it.
• Lead the review of penetration testing findings from internal and external assessments, driving remediation.
• Perform variant analysis to identify systemic vulnerabilities.
• Lead platform and product security evaluations, partnering with engineering teams on secure design.
• Be an active member of the 24x7 SOC capability.
• Mentor and guide more junior security engineers, and help raise the security engineering standard across the team.
• Represent Security on customer and cross-functional calls, to answer security-related questions and provide clear, trusted guidance.
• Foster a collaborative, supportive team culture that encourages knowledge-sharing and continuous improvement. Your Talents…
• 6+ years' experience in cyber security in a SOC, Security Engineering, or Systems Engineering role, with demonstrated ownership of security capabilities.
• Strong understanding of Windows OS, Linux, and system hardening.
• Strong understanding of common TTPs and monitoring.
• Hands on experience with AWS and/or Azure in a production environment.
• Able to lead security reviews and triage findings independently, setting the standard for others.
• Proven experience mentoring or leading junior engineers.
• Exposure to bug bounty programs and reproducing reported vulnerabilities.
• Experience performing manual web application testing highly desirable.
• Experience performing secure design reviews for new products highly desirable.
• Experience with threat detection, response, and monitoring tools.
• Determined, inquisitive, and curious mindset to fully investigate and understand situations.
• Confident liaising with external customers and internal stakeholders.
• Demonstrated efforts to keep up to date with latest developments in your technical area.
• Bachelor of IT (cyber security or system engineering focus) or equivalent experience.
• Good understanding of OWASP Top 10, NIST, MITRE ATT&CK frameworks & ISO accreditations.

Why Join us?

Our core values and culture unleash the boundless potential of creativity, innovation and the entrepreneurial spirit within our people.

When you experience Life at TechnologyOne you'll see that our team enjoys an extensive array of benefits, including foundation charity activities, which all cultivate a vibrant workplace our people are very proud to be involved with. Benefits…

• Competitive remuneration package
• Hybrid working options as standard, with flexibility to move to remote over time
• Enhanced annual leave offering
• Up to 1 week of additional leave via our Purchase Leave program
• 4 x salary life assurance (as standard - can be upgraded via our flex-bens)
• Contributory pension scheme
• Employee Health cash plan funded by the business (as standard - can be upgraded via our flex-bens)
• £1,000 per annum spend within our benefits platform
• Company Days and off-site team building days
• Foundation (volunteer days 2.5 per annum)
• Enhanced Maternity pay
• Enhanced Sickness absence pay
• Free LinkedIn Learning - professional development platform with access to thousands of courses for TechnologyOne employees (full access licence)
• Defined career framework - know what options you have in your career path and how you can get there
• Access to our industry leading Employee Share Plan

Who we are…

At TechnologyOne (ASX: TNE), we're more than Australia's largest top 50 ASX enterprise SaaS company; we're a team driven by purpose!

Our global SaaS ERP solution powers over 1,300 leading organisations, including government, education, health, and financial services. We take full responsibility for delivering outcomes - reducing time, cost, and risk; therefore, our customers can focus on what matters most.

For over 38 years, we've been helping communities and organisations thrive by making life simple through innovative technology. Ready to make a real difference? Join us and help shape the future of enterprise technology while building a career that matters.