Senior Software Developer: Analytics

About Marex

Marex Group plc is a diversified global financial services platform, providing essential liquidity, market access and infrastructure services to clients in the energy, commodities and financial markets. It listed on Nasdaq Global Select Market in April 2024. With more than 35 offices in Europe, US and APAC, it 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 delivers differentiation, scalability and security for the business. Reporting to the CEO, Technology provides digital tools, software services and infrastructure globally to all business groups. Software development and support teams work in agile ‘streams’ aligned to specific business areas. Our other teams work enterprise‑wide to provide critical services including our global service desk, network and system infrastructure, IT operations, security, enterprise architecture and design.

We’re looking for a highly skilled C# engineer with deep software engineering expertise and a strong understanding of financial markets. You’ll contribute to the design and development of advanced pricing and risk platforms, including a high‑performance distributed computing and market data system that supports quantitative research and trading. This role involves close collaboration with technology, trading, and quantitative teams, ensuring solutions meet business objectives while promoting Agile best practices, robust architecture, and continuous innovation.

We’re seeking a strong C# engineer who’s passionate about building scalable, high‑performance systems and developing innovative products that evolve with the business.

• Contribute to the architecture, design, and implementation of technology solutions developed and maintained by the team.
• Collaborate with the Software Development Manager to shape the development roadmap and define strategic priorities.
• Ensure all delivered systems meet production‑quality standards, are fully documented, and support a smooth handover for long‑term maintenance.
• Help define, promote, and uphold best practices in software engineering to ensure consistency, quality, and scalability across the team’s work.
• Actively participate in Agile ceremonies – including sprint planning, stand‑ups, and retrospectives – ensuring principles are applied effectively.
• Support sprint delivery by ensuring stories and bugs are well‑defined, prioritised, testable, and accompanied by clear acceptance criteria.
• Troubleshoot, diagnose, and resolve support issues efficiently, maintaining a professional and customer‑focused approach.
• Comply with the Operational Risk Framework, meeting all regulatory, security, and company standards.
• Demonstrate and promote integrity, professionalism, and alignment with Marex values in all interactions.

• Expert in C#
• Strong in Pythonn
• Hands‑on experience with React, JavaScript, and Type Script for front‑end development.
• Proven exceptional mathematical and analytical abilities.
• Strong understanding of risk sensitivities ("Greeks").
• Solid experience with derivative products.
• Skilled in working with SQL Server and Mongo
  
  DB databases.
• Experience implementing Infrastructure as Code using Terraform or similar tools.
• Familiar with modern CI/CD pipelines and Dev Ops best practices.
• Knowledge of cloud technologies, ideally AWS (Amazon Web Services).
• Proficient in using unit and integration testing frameworks to ensure code quality and reliability.
• Strong understanding of Agile and Scrum methodologies.
• Methodical approach to software architecture and design, with the ability to apply the right design patterns and principles for each project.
• Excellent verbal and written communication skills, with the ability to convey complex

• Excellent verbal and written communication skills
• A…