Security Engineer
Confirmed on the employer's own hiring board on Oct 19, 2026. First seen by Alion on Sep 15, 2026. London Stock Exchange Group scores B on the Alion truth index.
The Global Security Access Control (GSAC) team is responsible for maintaining users and group accounts within Active Directory (AD) to ensure optimal performance, security, and access control within our organisation’s network through various industry standard consoles including PowerShell. This involves crafting, modifying, and deleting user and group accounts, managing permissions and access rights, troubleshooting issues, and ensuring compliance with company policies and industry benchmark.
Role summary:
We are looking for a Security Engineer who will perform administrative tasks relating to the design, implementation and maintenancewithin the AD, to protect LSEG.
Key responsibilities and skills required for this role:
- The Security Engineer will contribute to the effective operation of the GSAC processes by accepting ownership of service requests for support and to ensure they are resolved to the customer’s satisfaction within agreed service levels, promoting customer confidence and satisfaction
- Work within the GSAC team on a shift pattern which includes a 24/7/365 Rota.
- Accept requests for support by telephone, email and the ServiceNow system.
- Performing all relevant Security and Access control requests in a timely fashion whilst maintaining accuracy
- Record every request for support, ensuring these records meet published support and Incident Management guidelines.
- Assess the impact of each request and take appropriate action.
- Assign requests to appropriate internal or third-party support groups where required
- Proactively monitor the progress of each request and escalate where required.
- Inform customers of the status and progress of their requests regularly via ticket updates
- Ensure incident records are updated regularly with events and action plans
- Ensure customers are satisfied before resolving their requests
- Maintain the GSAC documentation and knowledge bases
- Assist and help in the identification of Problems
- Undertake any other duties as may be required by LSEG management on an ad-hoc basis
- Understanding of the ITIL / ITSM methodologies
- Good understanding of Microsoft Windows core technologies is essential.
What you'll be doing:
User Account Management
Group Management
Access Control & Permissions
Monitoring and Reporting
Security and Compliance
Documentation and Process Improvement
What you'll bring:
- Very good Active Directory Knowledge in an Enterprise environment - Hierarchy / management group design, deployment, configuration and BAU support.
- Experience with all aspects of AD user and group Management
- Must be excellent liaising with customers
- Good document authoring skills
- Experience working in an enterprise environment with strong change control practices
- Knowledge of Windows Server Technologies e.g. Service accounts and policies restricting their use through Group membership and GPO
- Experience with ServiceNow (OSM) as the primary ITSM tool.
- Worked with Power BI, Power Apps, proficient in Excel
- Self-motivated and self-starter who can work independently as well as part of a team.
- Ability to learn new concepts and products with ease.
- Ability to think quickly and look for alternative solutions in complicated situations.
What you’ll get in return:
We recognise that to attract the best talent, we need to be flexible, and we are open to discussing work arrangements with you. We take hybrid approach to workplace; this role is hybrid/ digital first. As a global business, we rely on diversity of culture and thought to deliver on our goals. People are at the heart of what we do and drive the success of our business. Our colleagues thrive personally and professionally through our shared values of Integrity, Partnership, Innovation and Excellence are at the core of our culture. We embrace diversity and actively seek to attract people with unique backgrounds and perspectives. We are always looking at ways to become more agile, so we meet the needs of our teams and customers. We believe that an inclusive collaborative workplace is pivotal to our success and supports the potential and growth of all colleagues at LSEG
We're proud to have been recognised as a Great Place to Work® in India ‘25
Career Stage:
Senior AssociateLondon 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.