Application Support Manager - Enterprise Technology

Marex Group plc (NASDAQ: MRX) is a diversified global financial services platform providing essential liquidity, market access and infrastructure services to clients across energy, commodities and financial markets. The group provides comprehensive breadth and depth of coverage across four core services: clearing, agency and execution, market making, and hedging and investment solutions.

The Enterprise Technology team sits at the centre of Marex’s technology landscape, delivering a cross‑business platform that enables our trading and business streams to innovate and go to market at pace. We provide shared capabilities including API gateways, centralised APIs, real‑time data streaming, connectivity solutions and emerging AI‑driven services.

Role Summary

Join the Enterprise team working on Engine Room, one of Marex’s most strategic technology initiatives. As an Application Support Manager, you’ll play a critical role in ensuring the stability, performance, and reliability of a modern, enterprise‑grade platform at the core of the business. You’ll lead support efforts, manage incidents, and work closely with development and business teams to drive continuous improvement.

Responsibilities

• Lead and manage the application support team, driving performance, prioritisation, and a high standard of service delivery.
• Own production support for enterprise platforms, ensuring stability, performance, and availability.
• Operate within a SOX‑controlled environment, ensuring adherence to controls, audit requirements, and change governance.
• Lead support, managing incidents, problems, and changes in line with ITIL standards.
• Act as escalation point for critical issues, driving resolution and clear stakeholder communication.
• Support and operate modern platforms (APIs, microservices, event‑driven systems, cloud infrastructure).
• Partner with development and technologists to ensure systems are supportable, observable, and resilient in production.
• Drive automation and operational improvements using scripting, automation and tooling and AI.
• Oversee system releases and changes, aligned with CI/CD practices.
• Act as liaison between technology, business, and clients for system changes and support matters.
• Ensure effective monitoring, alerting, and proactive issue detection.
• Maintain high‑quality documentation for systems, processes, and support procedures.
• Support regulatory, audit, and compliance activities, including reporting obligations.

All staff:

• Ensure compliance with the company’s regulatory requirements under the FCA.
• Adhere to the operational risk framework for your role ensuring that all regulatory or company determined parameters are complied with.
• Role model for demonstrating highest level standards of integrity and conduct and reflecting Company Values.
• At all times comply with the FCA’s Code of Conduct.
• Ensure that you are fully aware of and adhere to internal policies that relate to you, your role or any other activities for which you have any level of responsibility.
• Report any breaches of policy to Compliance and/or your supervisor as required.
• Escalate risk events immediately.
• Provide input to risk management processes, as required.

Competencies, Skills, Experience & Qualifications:

• Collaborative and approachable leader who fosters a positive team environment.
• Strong ownership mindset with accountability for platform stability and performance.
• Proactive and solution‑oriented, with a focus on continuous improvement.
• Resilient and adaptable in a fast‑paced, high‑demand environment.
• Excellent relationship builder, able to influence across technology and business teams.
• Strategic thinker with the ability to anticipate challenges and drive operational effectiveness.
• Curious and forward‑looking, with an interest in evolving technologies and practices.

Skills and Experience Essential:

• Strong experience in application support within financial services, ideally in trading or capital markets environments.
• Solid technical background across: Windows and Linux/Unix environments, Databases (SQL Server, Oracle), Distributed systems and APIs.
• Experience supporting modern architectures: Microservices and REST APIs, Cloud platforms (preferably AWS).
• Proven experience with ITIL processes (incident, problem, change management).
• Strong understanding of DevOps practices, CI/CD pipelines, and release management.
• Experience with scripting/automation (e.g., PowerShell or similar).
• Knowledge of trading systems, market connectivity, and protocols (e.g., FIX).
• Experience managing vendor systems, exchange connectivity, and external integrations.
• Strong documentation, communication, and stakeholder management skills.
• Ability to operate effectively in a high‑pressure, fast‑paced environment.
• Experience contributing to or supporting enterprise platforms or shared services.
• Exposure to infrastructure as code (e.g., Terraform).
• Experience with observability tooling (monitoring, logging, tracing).
• Understanding of high‑frequency trading environments.
• Prior experience in client‑facing or consultative technical roles.
• Bachelor’s degree in a relevant field.

Conduct Rules

• Act with integrity.
• Act with due skill, care and diligence.
• Be open and cooperative with the FCA, the PRA and other regulators.
• Pay due regard to the interests of customers and treat them fairly.
• Observe proper standard of market conduct.

Company Values

• Respect – Clients are at the heart of our business, with superior execution and superb client service the foundation of the firm.
• Integrity– Doing business the right way is the only way.
• Collaborative– We work in teams – open and direct communication and the willingness to work hard and collaboratively are the basis for effective teamwork.
• Developing our People– Our people are the basis of our competitive advantage.
• Adaptable and Nimble– Our size and flexibility is an advantage.

Marex is fully committed to being an inclusive employer and providing an inclusive and accessible recruitment process for all.