Top Tech Jobs & Startup Jobs in London

Manage Calero technology expense and market data inventory records, reconcile invoices, validate cost allocations, investigate variances, and support accounts payable. Administer market data licenses, exchange entitlements, vendor permission files, and joiner/leaver updates. Prepare reporting, support accruals and prepayments, audit processes, and coordinate with suppliers and internal stakeholders in a regulated environment.

Designs, implements, operates, and maintains Marex’s global network infrastructure. Responsibilities include network consultancy, operational support, security design, troubleshooting, vendor management, cloud networking, automation, infrastructure as code, and reporting. The role supports WAN, campus LAN, firewalls, exchange connectivity, and low-latency networks while ensuring regulatory compliance and operational resilience.

Manages the day-to-day operations of the global Internal Audit function, including audit plan coordination, resource planning, issue tracking, governance reporting, methodology updates, regulatory coordination, quality assurance, TeamMate+ administration, onboarding, cross-functional projects, and budget tracking.

Reviews payment and ongoing screening alerts for sanctions, AML, CTF, PEP, adverse media and other financial crime risks. Investigates client, counterparty and transaction information, determines alert dispositions, documents evidence-based rationales, escalates potential risks, supports payment hold or release decisions, maintains audit trails, and contributes to quality assurance, control testing, remediation and process improvements.

Build and operate cloud and on-premises platforms supporting infrastructure provisioning and application deployment. Develop CI/CD capabilities, improve developer experience, automate workflows with scripting and IaC, and enforce security and governance practices. Collaborate on cloud architecture, support platform users, participate in on-call and maintenance activities, and promote DevOps practices while mentoring junior engineers.

The Security Engineer designs, administers, and improves cybersecurity capabilities, primarily focused on identity protection and privileged access management. Responsibilities include PAM administration, privileged account lifecycle management, credential rotation, secrets and certificate management, access governance, threat detection, automation, incident response, security control monitoring, audit reporting, and collaboration on system hardening and security platform improvements.

Oversee legal entity financial control and reporting for a global regulated financial services group. Responsibilities include preparing financial statements under IFRS, US GAAP, and FRS 102; managing month-end reporting, reconciliations, audits, management reporting, SOX controls, acquisitions, and business changes. The role also reviews balance sheet substantiation, improves processes, supports senior management, and provides guidance and line management to team members.

Leads Marex’s enterprise Quality Engineering and Assurance capability in a regulated financial-services environment. Owns the risk-based quality framework, testing standards, quality gates, traceability, evidence, and assurance model. Drives adoption of automation-first, continuous, AI-augmented testing integrated with CI/CD, while providing independent challenge and governance. Partners with engineering, security, risk, compliance, and architecture teams to improve operational readiness, control effectiveness, auditability, and technology delivery outcomes.

Leads clearing-business strategy, financial planning, performance management, management information, budgeting, cost discipline, and revenue-growth initiatives. Partners with finance, strategy, operations, treasury, IT, and senior stakeholders on organic and inorganic growth, acquisitions, projects, client profitability, and regulatory compliance. Develops KPIs, financial reports, board materials, investor communications, and three-year plans while supporting sustainable, scalable business performance.

Supports the Solutions COO team in managing a structured-products business, leading strategic and technology-focused initiatives, improving operational processes, automating MI and KPI reporting, managing budgets and costs, delivering platforms, coordinating regulatory projects, and serving as a liaison between business and control functions. The role also mentors junior staff and drives innovation, efficiency, and sustainable business growth.