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Lead Security Engineer

Job in Milton Keynes, Buckinghamshire, MK1, England, UK
Listing for: Addition+
Full Time, Part Time, Apprenticeship/Internship position
Listed on 2026-02-24
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer, Network Security, Security Manager
Job Description & How to Apply Below

Addition+ Milton Keynes, England, United Kingdom

Lead Security Engineer

Addition+ Milton Keynes, England, United Kingdom

4 days ago Be among the first 25 applicants

Direct message the job poster from Addition+

This is an exciting opportunity to join a forward-thinking tech business as they scale their security capabilities. As Lead Security Engineer, you’ll take ownership of critical security initiatives, lead a talented team, and help shape the strategy that protects their growing platform.

Role Overview:

  • Location: Hybrid – Milton Keynes (with flexible working options)
  • Industry: Technology / SaaS / Financial Services

What You’ll Be Doing:

  • Leading endpoint monitoring and detection strategies across all company devices
  • Overseeing cloud security posture management and ensuring compliance with best practices
  • Driving improvements in network security and real-time intrusion detection
  • Leading the investigation and resolution of security incidents, collaborating with cross-functional teams
  • Designing and enforcing identity and access management (IAM) frameworks
  • Implementing proactive strategies to detect and stop account takeovers and impersonation threats
  • Owning the threat exposure management lifecycle and response protocols
  • Leading and mentoring a growing team of security engineers
  • Playing a key role in incident response planning and execution
  • Promoting security awareness and best practice across the business

Main Skills Needed:

  • Strong experience in endpoint monitoring, CSPM, intrusion detection, and network security
  • Proven ability to manage threat exposure and respond to live security events
  • Deep knowledge of IAM principles and tools (MFA, SSO, RBAC)
  • Experience leading and developing security teams in technical environments
  • Familiarity with cloud security (Azure, Google Cloud)
  • Expertise in industry frameworks (CIS, NIST, ISO
    27001)
  • Solid understanding of core protocols (TCP/IP, DNS, HTTP/S, VPN)
  • Comfortable presenting to both technical and non-technical audiences
  • Scripting skills in Python, Bash, or Power Shell for automation tasks

What’s in It for You:

  • High-impact role in a rapidly scaling, tech-driven business
  • Collaborative and agile culture with space to shape the security roadmap
  • Investment in tools, training, and professional development
  • Hybrid and flexible working to suit your lifestyle
  • Autonomy, ownership, and the support to grow a team around you

Let’s skip the hard sell — this is just a brilliant role.

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

By applying you are confirming you are happy to be added to the Addition Solutions mailing list regarding future suitable positions. You can opt out of this at any time simply by contacting one of our consultants.

Seniority level
  • Seniority level

    Mid-Senior level
Employment type
  • Employment type

    Full-time
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