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From the employer's careers site First seen 29 Oct 2026 · Still live on 5 Nov 2026

Group Director, Head of Security Architecture

The employer hasn't listed a salary.

Apply on London Stock Exchange Group (LSEG)

Description

As Group Director, Head of Security Architecture, you'll be a core member of the LSEG Cyber Security team, leading and setting the direction for the Cyber Security Architecture team.

The team delivers across several areas:

  • Principal Security architecture: a team of engineers ensuring security is built into all projects across the group.
  • Security Architecture Design: a central function delivering design patterns to ensure consistent implementation of controls across the group.
  • Security Architecture review: a central function delivering security reviews, including architecture governance reviews, network perimeter/firewall reviews, and third-party reviews.

You'll be involved in all major projects in the group, including technology new build, cloud migration projects, transformation programs, and mergers, acquisitions, and divestments.

Responsibilities:

  • Leads the development and execution of strategy for Security Architecture team.
  • Manages performance, development, and wellbeing of a team of architects.
  • Owns relationships with key stakeholders, including Cyber Security peers, group CTO, and Heads of Architecture.
  • Defines architecture principles, policies, and standards.
  • Contributes to the development of global enterprise standards.
  • Builds relationships with vendors, regulators, and industry bodies.
  • Seeks latest technology and business innovations.
  • Acts as trusted advisor and leader across the wider LSEG Engineering group.
  • Ensures Engineering projects meet critical security regulations.
  • Leads security engagement on major transformation projects.

Requirements:

  • Knowledge of financial market infrastructure technology and experience in deploying pragmatic security controls.
  • Strong deep expertise in Application Security Architecture and controls.
  • Experience in Enterprise Architecture, Technology Strategy, Cloud, Security, Applications, and Infrastructure.
  • Performing detailed security reviews of complex systems.
  • Experience of working with architectural development methodology, standards development, and technology architecture.
  • Qualifications in security leadership, such as CISSP, CISMP, or CISM, and TOGAF in architecture.
  • Modern engineering practices, agile practices, automation, and deployment pipelines.
  • Extensive experience in Enterprise Architecture and Technology Strategy across multiple Financial Services organisations.
  • Experience of developing and influencing strategic working relationships with key technology suppliers.
  • Experience in a leadership role within Security in a global Financial Services, FinTech, or Technology organisation.
  • Experience in managing high-performing teams and empowering them to deliver against the agreed strategy and roadmap.
  • Strong verbal and written communication skills.
  • Experience of successfully planning and delivering large-scale complex technology integrations and technology transformation programmes.
  • Proven ability to work well under pressure.

About LSEG: LSEG is a leading global financial markets infrastructure and data provider, operating across 70 countries, employing 26,000 people globally.

Benefits: LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days, and wellbeing initiatives.

Skills

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Ready to apply?

You apply with the employer directly. Their original posting is here: https://lseg.wd3.myworkdayjobs.com/en-US/Careers/job/London-United-Kingdom/Head-of-Security-Architecture_R0107534

Apply on London Stock Exchange Group (LSEG)