Python Software Developer | Risk Technology in London

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.

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 Technology Department delivers differentiation, scalability and security for the business. 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. The Software Development function creates and maintains applications, frameworks and other software components to deliver to business requirements. Developers conceive, specify, design, engineer, document, test, and deliver bug fixes as needed to provide high quality software solutions. Each Development team is aligned to one of Marex’s business divisions and works with a corresponding Business Technology and Application Support team.

Role Summary

As a valued member of the Technology department, the Software Developer will be working daily within the Risk stream. There is an opportunity to learn the various areas of Risk & Compliance through development and collaboration and by improving business processes. The Developer will be joining a dynamic team that are building a strategic system-scape. There will be the capability to help shape Technology growth and add significant value to the Risk department. The Developer will, via technology, help to enable growth whilst automating and improving reporting & complex calculations across areas including Market Risk, Clearing Risk, Counterparty Risk and Operational Risk. The Developer will operate within the Risk Engines team, who focus primarily on the implantation and integration of new and existing Risk Methodologies as per the requirements of our key stakeholders. Key relationships need to be maintained both within the Risk Engines team and the wider Development community within Marex. The Developer will work closely with Risk Application Support and other key functions such as Platform Engineering and IT Security. The operational challenges to be addressed include delivering high-quality solutions to meet the demands of a fast-growing, data-intensive department.

Responsibilities

• Assist in the creation and enhancement of Marex’s key Risk Engines, such as:
• Potential Future Exposure (PFE) Engine
• Market Risk Limits Engine
• CVaR (Client Value at Risk)
• Assist with integrating key applications, processes and data inherited by Marex through acquisitions.
• Comfortable with using Agentic AI to assist in code generation, expectation would be to understand its output, being able to both challenge and defend code generated.
• Integration and standardisation of input and output data through Marex’s key Risk vendor platforms.
• Develop and maintain procedures, workflows and other documentation relating to our Risk Engines.
• Keep up to date with key industry and technology developments as they relate to best practices in the financial services industry, including Agentic AI practices.
• Locate and define new process improvement opportunities.
• Work with stakeholders to maintain effective backlog management.
• Liaise with QA team to establish and maintain a suitable testing strategy.
• Strong domain knowledge is essential, being able to understand business needs and convert them into high quality output.

Competencies, Skills, Experience & Qualifications

Competencies:

• A collaborative team player, approachable, self-efficient and influences a positive work environment.
• Demonstrates curiosity.
• Resilient in a challenging, fast-paced environment.
• Strategic collaborator with insight and agility, able to anticipate and communicate future challenges, ensuring operational effectiveness.

Skills and Experience:

Essential:

• Full-stack Python Software Developer skills, specialising in numerical processing using Pandas, Numpy, Polars, PySpark, Coroutines, async tasks and Unix.
• Building scalable applications, with intensive risk-based processing.
• Package software for distribution (eg Docker, Poetry, python-wheels, PyInstaller, Databricks bundles).
• Databricks, Data persistence with relational or non-relational databases.
• Familiarity with Cloud Data Technologies, especially AWS (ECS, Lambda, S3, EventBridge).
• Logging patterns, especially Splunk.
• Experience using TDD and/or automation testing (Use of BDD frameworks is a bonus).
• Software development methodologies (Sprints/Agile) and project management software (Jira Software).

Desirable:

• C#, Typescript, React.
• Experience working in a regulated environment and knowledge of the risk and compliance requirements associated with this.

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.