Application Support Engineer

Build strong working relationships with CDSClear First Line Risk, Operations, and Customer Success teams, ensuring functional and operational requirements

Proactively align IT teams with business and production events, ensuring required IT activities are identified, planned, and performed effectively

Own and maintain standard operating procedures before, during, and after daily clearing sessions to meet service expectations of LCH members and clients

Run CDSClear test environments (IUA, EUA), ensuring availability, performance, and stability targets are met across all supported applications

Supervise CDSClear IT Support team activity and optimise workload allocation across BAU support, project work, shift coverage, on‑call duties, and business events

Coordinate and implement Disaster Recovery testing, ensuring compliance with Business Continuity and resilience standards

Lead incident management activities, including timely escalation, cross‑team coordination, resolution, and remediation

Own organisational change for CDSClear applications, coordinating delivery schedules, aligning with the enterprise change calendar, and ensuring quality gates are met prior to deployment

Drive a continuous improvement culture to strengthen production stability and operational efficiency. Contribute to IT Change and Governance forums to prioritise enhancements supported by clear cases

Collaborate with development teams to improve release reliability and automation, using the approved LSEG DevOps toolset

Lead capacity and performance management, improving monitoring capabilities to ensure platforms scale in line with business growth, increased volumes, and new product launches

Maintain hands‑on technical expertise across the CDSClear estate, including Unix, SQL, Control‑M, web services, and networking technologies. Exposure to AWS is advantageous.

Coordinate IT risk management activities for the CDSClear information system, including remediation of risk appetite actions and Internal Audit findings.

Act as the primary IT interface to Information Security, ensuring vulnerabilities across applications and infrastructure are identified, prioritised, and remediated.

Career Stage:

Senior Associate

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.