Application Support Manager - Enterprise Technology

About Marex 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. It has a leading franchise in many major metals, energy and agricultural products, with access to 60 exchanges. The group provides access to the world’s major commodity markets, covering a broad range of clients that include some of the largest commodity producers, consumers and traders, banks, hedge funds and asset managers. With more than 40 offices worldwide, the group has over 3,000 employees across Europe, Asia and the Americas.

Position Reference: VN2637

Department Description Marex has unique access across markets with significant share globally both on and off exchange. The depth of knowledge amongst its teams and divisions provides its customers with clear advantage, and its technology‑led service provides access to all major exchanges, order‑flow management via screen, voice and DMA, plus award‑winning data, insights and analytics. 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. By building scalable, resilient and reusable platform components, the team reduces duplication, accelerates product delivery and ensures consistent standards across the organisation. Engine Room is a core part of this strategy, forming the foundation upon which next‑generation digital services are built. Marex recognises the need to provide digital services to give clients the best possible experience. As such, the technology team at Marex is playing an increasingly important role in the evolution of the firm and enabling business growth and new products and 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. We’re growing quickly and need proactive, adaptable leaders who can navigate changing demands, coordinate across teams, and bring a solutions‑focused mindset. If you thrive in a fast‑paced environment and enjoy owning and improving mission‑critical systems, this is the role for you.

Responsibilities Role specific:

• 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.
• Manage vendor systems mandatory upgrades.
• 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 Competencies:

• 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, Event‑driven systems (e.g., Kafka), 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.

Desirable:

• 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.
• Act to deliver good outcomes for retail customers.

Company Values:

• Respect - Clients are at the heart of our business, with superior execution and superb client service the foundation of the firm. We respect our clients and always treat them fairly.
• Integrity - Doing business the right way is the only way. We hold ourselves to a high ethical standard in everything we do – our clients expect this and we demand it of ourselves.
• Collaborative - We work in teams - open and direct communication and the willingness to work hard and collaboratively are the basis for effective teamwork. Working well with others is necessary for us to succeed at what we do.
• Developing our People - Our people are the basis of our competitive advantage. We look to “grow our own” and make Marex the place ambitious, hardworking, talented people choose to build their careers.
• Adaptable and Nimble - Our size and flexibility is an advantage. We are big enough to support our client’s various needs, and adaptable and nimble enough to respond quickly to changing conditions or requirements. A non‑bureaucratic, but well controlled environment fosters initiative as well as employee satisfaction.

Marex is fully committed to being an inclusive employer and providing an inclusive and accessible recruitment process for all. We will provide reasonable adjustments to remove any disadvantage to you being considered for this role. We value the differences that a diverse workforce brings to the company. We welcome applications from candidates returning to the workforce. Also, Marex is committed to avoiding circumstances in which the appearance or possibility of conflicts of interest may exist within the hiring process. If you would like to receive any information in a different way or would like us to do anything differently to help you, please include it in your application.