ABOUT US:

LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. It’s how we’ve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services - and our open-access model - we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.

LSEG is headquartered in the United Kingdom, with significant operations in 65 countries across EMEA, North America, Latin America and Asia Pacific. We employ 25,000 people globally, more than half located in Asia Pacific. LSEG’s ticker symbol is LSEG.

OUR PEOPLE:

People are at the heart of what we do and drive the success of our business. Our values of Integrity, Partnership, Excellence and Change shape how we think, how we do things and how we help our people fulfil their potential. We embrace diversity and actively seek to attract individuals with unique backgrounds and perspectives. We break down barriers and encourage teamwork, enabling innovation and rapid development of solutions that make a difference. Our workplace generates an enriching and rewarding experience for our people and customers alike. Our vision is to build an inclusive culture in which everyone feels encouraged to fulfil their potential.

We know that real personal growth cannot be achieved by simply climbing a career ladder - which is why we encourage and enable a wealth of avenues and interesting opportunities for everyone to broaden and deepen their skills and expertise. As a global organisation spanning 65 countries and one rooted in a culture of growth, opportunity, diversity and innovation, LSEG is a place where everyone can grow, develop and fulfil your potential with meaningful careers.

Heimdall Manager GG14

ROLE PROFILE:

We are seeking a Senior Engineering Manager to join our Customers Identity & Access Management team at LSEG. You will play a pivotal role in maintaining and evolving our custom Secure Token Service, a critically significant component of our infrastructure that underpins secure authentication across to our customers.

This is a rare opportunity to work on a high-performance, low-latency, and highly resilient system at scale, with direct impact on the security and reliability of financial services used globally.

What You’ll be doing:

• Lead and mentor a team of Senior Developers.
• Own and evolve a custom-built application written in Go & Python, deployed in AWS, and crafted for sub-millisecond latency and 99.999% uptime.
• Implement and optimize OAuth2 and OpenID Connect flows for secure, scalable authentication.
• Collaborate with DevOps and Security teams to ensure robust observability, automated recovery, and zero-downtime deployments via Gitlab pipeline, Terraform and DevSecOps practices.
• Drive architectural decisions and mentor engineers in performance tuning, resilient design, and secure coding practices.
• Contribute to incident response and postmortems, continuously improving system reliability.

What You’ll bring:

• Experience in managing engineers, with 3+ years in deep expertise in distributed systems.
• Proven record building low-latency, high-throughput, and fault-tolerant services in cloud-native environments (preferably AWS or Azure).
• Strong understanding of OAuth2, OpenID Connect, and identity federation protocols.
• Proficiency in Linux internals, networking, and performance profiling.
• Experience with infrastructure as code, CI/CD pipelines, and monitoring tools.
• Passion for clean code, automation, and continuous improvement.
• Excellent interpersonal skills and a collaborative mentality.

What you’ll get in return:

At LSEG, we invest in excellence. You’ll be part of a high-performing team where your expertise is valued and your impact is visible. We offer:

• Competitive compensation with performance-based rewards.
• A flexible hybrid work model that supports work-life balance.
• Access to cutting-edge tools and infrastructure to do your best work.
• Opportunities for continuous learning, including certifications, conferences, and internal mobility.
• A collaborative culture that values technical mastery, ownership, and innovation.
• The chance to work on a globally critical system that powers secure financial transactions across markets.

Career Stage:
Manager

London Stock Exchange Group (LSEG) Information:

Join us and be part of a team that values innovation, quality, and continuous improvement. If you’re ready to take your career to the next level and make a significant impact, we’d love to hear from you.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants’ and employees’ religious practices and beliefs, as well as mental health or physical disability needs.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

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

Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject .

If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.

ABOUT US:

LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. It’s how we’ve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services - and our open-access model - we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.

LSEG is headquartered in the United Kingdom, with significant operations in 65 countries across EMEA, North America, Latin America and Asia Pacific. We employ 25,000 people globally, more than half located in Asia Pacific. LSEG’s ticker symbol is LSEG.

OUR PEOPLE:

People are at the heart of what we do and drive the success of our business. Our values of Integrity, Partnership, Excellence and Change shape how we think, how we do things and how we help our people fulfil their potential. We embrace diversity and actively seek to attract individuals with unique backgrounds and perspectives. We break down barriers and encourage teamwork, enabling innovation and rapid development of solutions that make a difference. Our workplace generates an enriching and rewarding experience for our people and customers alike. Our vision is to build an inclusive culture in which everyone feels encouraged to fulfil their potential.

We know that real personal growth cannot be achieved by simply climbing a career ladder - which is why we encourage and enable a wealth of avenues and interesting opportunities for everyone to broaden and deepen their skills and expertise. As a global organisation spanning 65 countries and one rooted in a culture of growth, opportunity, diversity and innovation, LSEG is a place where everyone can grow, develop and fulfil your potential with meaningful careers.

ROLE PROFILE:

We are seeking a Senior Frontend Developer to join our Customers Identity & Access Management team at LSEG. You will play a pivotal role in maintaining and evolving our JavaScript SDK, a critical interface that enables secure authentication and seamless integration of our Authentication into client applications across to our customers.

This role is ideal for someone who thrives in developer experience, SDK design, and security-focused frontend engineering.

What You’ll be doing:

• Own and maintain a JavaScript SDK built with React and TypeScript, enabling secure integration with our custom Secure Token Service.
• Design intuitive, developer-friendly APIs that abstract complex authentication flows (OAuth2, OpenID Connect).
• Ensure the SDK is secure, performant, and easy to integrate across a wide range of frontend applications.
• Collaborate with backend engineers to align SDK functionality with evolving identity protocols and token flows.
• Build automated tests and CI pipelines to ensure quality, reliability, and backward compatibility.
• Write clear documentation and sample apps to support internal and external developers.
• Stay current with frontend security best practices and contribute to platform-wide improvements.

What You’ll bring:

• Proven of experience in frontend development, with deep expertise in React, TypeScript, and modern JavaScript.

• Proven experience designing and maintaining SDKs or libraries used by other developers.

• Strong understanding of OAuth2, OpenID Connect, and secure authentication flows.

• Familiarity with CI/CD pipelines, automated testing, and versioning strategies for SDKs.

• Experience with frontend performance optimization, cross-browser compatibility, and accessibility standards.

• Passion for clean code, automation, and continuous improvement.

• Excellent interpersonal skills and a passion for developer experience and security.ROLE PROFILE:

  We are seeking a Senior Frontend Developer to join our Customers Identity & Access Management team at LSEG. You will play a pivotal role in maintaining and evolving our JavaScript SDK, a critical interface that enables secure authentication and seamless integration of our Authentication into client applications across to our customers.

  This role is ideal for someone who thrives in developer experience, SDK design, and security-focused frontend engineering.

  What You’ll be doing:

  • Own and maintain a JavaScript SDK built with React and TypeScript, enabling secure integration with our custom Secure Token Service.
  • Design intuitive, developer-friendly APIs that abstract complex authentication flows (OAuth2, OpenID Connect).
  • Ensure the SDK is secure, performant, and easy to integrate across a wide range of frontend applications.
  • Collaborate with backend engineers to align SDK functionality with evolving identity protocols and token flows.
  • Build automated tests and CI pipelines to ensure quality, reliability, and backward compatibility.
  • Write clear documentation and sample apps to support internal and external developers.
  • Stay current with frontend security best practices and contribute to platform-wide improvements.

• What You’ll bring:

  • Proven of experience in frontend development, with deep expertise in React, TypeScript, and modern JavaScript.
  • Proven experience designing and maintaining SDKs or libraries used by other developers.
  • Strong understanding of OAuth2, OpenID Connect, and secure authentication flows.
  • Familiarity with CI/CD pipelines, automated testing, and versioning strategies for SDKs.
  • Experience with frontend performance optimization, cross-browser compatibility, and accessibility standards.
  • Passion for clean code, automation, and continuous improvement.
  • Excellent interpersonal skills and a passion for developer experience and security.

Common FOOTER

What you’ll get in return:

At LSEG, we invest in excellence. You’ll be part of a high-performing team where your expertise is valued and your impact is visible. We offer:

• Competitive compensation with performance-based rewards.
• A flexible hybrid work model that supports work-life balance.
• Access to cutting-edge tools and infrastructure to do your best work.
• Opportunities for continuous learning, including certifications, conferences, and internal mobility.
• A collaborative culture that values technical mastery, ownership, and innovation.
• The chance to work on a globally critical system that powers secure financial transactions across markets.

Career Stage:
Manager

London Stock Exchange Group (LSEG) Information:

Join us and be part of a team that values innovation, quality, and continuous improvement. If you’re ready to take your career to the next level and make a significant impact, we’d love to hear from you.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants’ and employees’ religious practices and beliefs, as well as mental health or physical disability needs.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

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

Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject .

If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.

Rate - £550 - £600 Inside IR35 total to umbrella

Duration - 6 months initial

Location - Bournemouth / London (three days a week on site)

Overview:

We are seeking a Senior IAM Engineer / Technical Specialist to support a series of high profile identity transformation projects.

This is a hands-on engineering role with a strong design focus, you will play a key part in shaping and delivering modern Identity & Access Management (IAM) solutions across a complex enterprise environment.

You will bring deep technical expertise across the identity lifecycle, helping to deliver secure, scalable and automated access solutions for internal users, applications and third parties.

Key Responsibilities:

• Design and engineer modern IAM solutions across cloud and on-prem environments
• Lead technical delivery across key programmes, including MIM replacement and IAM transformation initiatives
• Build and optimise identity lifecycle processes (Joiners, Movers, Leavers) with a strong focus on automation
• Develop and implement least privilege access models and role-based access controls (RBAC)
• Configure and support Microsoft Identity Manager (MIM) and Entra ID (Azure AD) solutions
• Contribute to the design of a target-state IAM architecture, including vendor/tooling selection
• Support evaluation and integration of IAM platforms such as SailPoint, Saviynt (or similar IGA tools)
• Enable secure access for third parties and external users, removing reliance on legacy constraints (e.g. email domain restrictions)
• Collaborate with Architecture, Security and Engineering teams to ensure IAM is embedded across all programmes

Required Skills & Experience:

• Strong background in IAM engineering within enterprise-scale environments
• Proven experience with Microsoft Identity Manager (MIM 2016) - including design, build and lifecycle automation
• Deep understanding of identity lifecycle management (Joiners, Movers, Leavers)
• Hands-on expertise with Entra ID (Azure AD) and broader Azure IAM capabilities
• Experience with IAM/IGA platforms such as SailPoint, Saviynt, or similar
• Solid understanding of authentication and authorisation protocols: SAML, OAuth, OpenID Connect, SCIM
• Strong knowledge of directory services (Active Directory, LDAP)
• Scripting and development capability (PowerShell, C#, Java) for automation and integration
• Experience implementing RBAC and least privilege access models
• Understanding of cloud IAM across cloud infrastructures

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.

Role: IAM Specialist (Identity Governance & Administration)

Location: Culham - 2-3 days per week on site, remainder remote

Duration: Until 18/12/2026 (possible extension)

Day Rate: Approx. £50-55/hour (Umbrella)

IR35: In scope

Sector: Cyber / Public Sector

Clearance: BPSS (eligible for SC)

Our client’s mission is to deliver highly secure, scalable and innovative digital solutions to support critical national work. The IAM Specialist will sit within the cyber security team and will be directly responsible for the technical implementation and configuration of a new IGA platform.

What you will be doing

• Implement and configure an enterprise IGA platform (SailPoint, Saviynt, Omada, One Identity or similar) from a hands-on, technical standpoint.
• Integrate the IGA solution with Microsoft Entra ID / Azure AD as the primary Identity Provider.
• Connect authoritative sources (HR systems, contractor databases, directories) to underpin identity lifecycle management.
• Design and build automated Joiner-Mover-Leaver (JML) processes for provisioning and deprovisioning.
• Create and optimise approval workflows and access request processes, including exceptions.
• Set up and manage access certification / recertification campaigns and attestation activities.
• Develop and refine RBAC models, including role mining and entitlement management.
• Configure application connectors for AD, Entra ID, SaaS and on-prem systems.
• Implement segregation of duties (SoD) policies and access risk analytics.
• Configure SSO and federation using SAML, OAuth 2.0, OpenID Connect and SCIM.
• Troubleshoot provisioning and synchronisation issues and support data quality remediation.
• Produce clear technical documentation, runbooks and configuration specifications.
• Support audit and compliance reporting against frameworks such as ISO 27001 and NIST CSF.

What they are looking for

• Strong, hands-on IGA implementation experience (SailPoint, Saviynt, Omada, One Identity, or similar).
• Proven track record integrating IGA with Microsoft Entra ID / Azure AD and directory services (AD, LDAP, hybrid identity).
• Deep understanding of identity lifecycle management and automated JML workflows.
• Experience building approval workflows, access request processes and certification campaigns.
• Solid knowledge of authentication and authorisation standards: SAML, OAuth 2.0, OpenID Connect, SCIM.
• Good troubleshooting skills around provisioning, synchronisation and connector configuration.
• Comfortable documenting configurations and creating runbooks.

Nice to have

• Degree in Information Security, Computer Science or related STEM field.
• Vendor certifications in IGA (e.g. SailPoint, Saviynt, Omada) and/or Microsoft SC-300.
• Scripting skills (PowerShell, Python) for automation and connector development.
• Experience with API integrations, web services and ITSM / change control processes.
• Background in public sector or critical national infrastructure environments.

Why this role could interest you

• Long-term stability: Contract running until December 2026, offering continuity and depth of involvement.
• Impactful work: You will be shaping the core identity governance capability for a high-profile, security-focused organisation.
• Hands-on technical focus: This is not a high-level advisory role - you will actually build, configure and optimise the platform.
• Collaborative environment: Work closely with cyber, HR, IT operations and application owners to design pragmatic access models.