Application Support Engineer

LSEG; City Of London; On-site; GBP 50,000 - 70,000; Full time

Job summary

LSEG is seeking a Senior Associate to deliver Level 2 IT support for the CDSClear business in London. The role involves maintaining the operational health of production and UAT environments, leading incident management activities, and coordinating disaster recovery testing. Candidates should have strong Unix and SQL skills, hands-on experience in IT support, and familiarity with change management processes. The position fosters collaboration across teams and supports a culture of continuous improvement.

Qualifications

• Strong technical expertise across CDSClear systems including Unix, SQL, and networking.
• Hands-on experience in IT support and incident management.
• Familiarity with change management processes.

Responsibilities

• Deliver Level 2 IT support for CDSClear business.
• Lead incident management activities and coordinate disaster recovery testing.
• Supervise IT support team and optimize workload allocation.

Skills

Unix

SQL

Control-M

Networking technologies

AWS

Job description

Career Stage

Senior Associate

Responsibilities

• Deliver Level 2 IT support for the CDSClear business, providing hands‑on support for in‑house trade management and risk platforms across production and test environments.
• Partner closely with other CDSClear teams to advance the CDSClear delivery roadmap, including active support of non‑production environments.
• Participate in an out‑of‑hours on‑call rota, ensuring continuity and resilience of critical clearing services.
• Support extended clearing operations as part of a late‑shift Site Reliability Engineering rota (up to 10:30 pm London time) to accommodate increased US trading hours, with scope evolving as the global support model matures.
• Be responsible for the operational health of all CDSClear production and UAT environments, ensuring agreed service levels are consistently met.
• Lead front‑to‑back operational support for CDSClear‑aligned and non‑aligned applications and infrastructure, maintaining day‑to‑day service stability.
• 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 change management 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, enhancing 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.

Equality and Diversity

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.