Career Opportunities

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 Technology Department, reporting to the CEO, delivers secure, scalable digital tools, software services, and infrastructure across all business units. Agile development teams align with specific business areas, while other teams handle enterprise-wide IT operations, support, security, and architecture.

The Data & AI team drives productivity, compliance, and insights by leveraging a robust Data Lakehouse, decentralizing data access, improving client experiences, promoting data-driven practices, and ensuring efficient, auditable use of data in line with commercial terms.

Role Summary

The DBA supports the resilience, performance, and operational integrity of Marex’s multi-platform database estate. Based in Singapore and reporting to the DBA Manager in London, the role is responsible for the administration, optimisation, and lifecycle management of databases that underpin critical systems.
Working as part of a globally distributed DBA team, the individual will deliver high‑quality database support across Development, UAT, and Production environments.

A key focus of the role is performance tuning and diagnosis, optimising SQL execution paths, managing capacity, and ensuring high‑availability configurations operate effectively in a 24/7 environment.

The role also contributes to maintenance, patching, upgrades, automation, and cross‑platform initiatives across database technologies, helping to ensure consistency, reliability, and alignment to best practices across the group.

All employees are expected to understand and comply with any Sarbanes‑Oxley (SOX) operational requirements relevant to their role.

Overall Responsibilities

• Administer Oracle Exadata Cloud Service on Dedicated Infrastructure within Oracle Cloud Infrastructure (OCI).
• Administer, configure, and maintain databases supporting critical operational systems.
• Deliver patching, upgrades, and security hardening in line with internal standards and regulatory expectations.
• Provide L2/L3 support for production incidents, performing root cause analysis and driving permanent remediation.
• Collaborate with development, infrastructure, and application support teams across EMEA/APAC to ensure reliable database services.
• Contribute to the uplift and maintenance of database monitoring, automation, and observability tooling.
• Support initiatives across other RDBMS platforms (e.g. SQL Server, MongoDB, PostgreSQL, MySQL) as required.
• Produce and maintain operational documentation, runbooks, and architectural artefacts.
• Ensure compliance with internal controls, change management processes, and all applicable SOX control objectives.
• The Company may require you to carry out other duties from time to time

Competencies, Skills and Experience

Competencies

• Excellent verbal and written communication skills.
• A collaborative team player—approachable, self‑sufficient, and able to positively influence the working environment.
• Demonstrates curiosity and a proactive approach to problem‑solving.
• Resilient in a challenging, fast‑paced environment.
• Ability to take a high level of responsibility in a high‑volume and time‑critical operational setting.
• Excels at building relationships, networking, and influencing cross‑functional teams.
• Strategic collaborator with insight and agility; able to anticipate future challenges and support operational effectiveness.

Skills and Experience

Required

• Experience of Oracle Exadata and the Maximum Availability Architecture including Oracle RAC, Data Guard, RMAN, and related tools.
• Strong experience as an Oracle DBA in mission‑critical production environments.
• Deep expertise in Oracle performance tuning (SQL tuning, AWR/ASH/ADDM analysis, optimizer behaviour).
• Proven experience working in a regulated environment with understanding of associated risk and compliance requirements.
• Hands‑on experience with backup/recovery, failover, patching, and upgrades.
• Comfort working as part of a global follow‑the‑sun support model.
• Experience with Linux‑based environments and shell scripting. Experience working in a regulated environment and knowledge of the risk and compliance requirements associated with this.

Preferred

• Experience of OCI database services and the features and functionality of each.
• Exposure to multiple database platforms (e.g. SQL Server, MongoDB, PostgreSQL, MySQL).
• Experience with automation (Terraform, Ansible, scripting) and monitoring tools (OCI Native and OEM).
• Familiarity with cloud database services (OCI, AWS, Azure) beneficial.
• Experience in financial services or other high‑availability, low‑latency environments.

Company Values

Acting as a role model for the values of the Company:

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.

Conduct Rules

You must:

• Act with integrity
• Act with due skill, care and diligence
• Be open and cooperative with the FCA, the PRA and other regulators (where applicable)
• 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