Software Developer | Market Making Technology

Marex Group; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Marex is seeking a Market Making Senior Software Developer in London to design, develop and maintain high‑quality applications across internal and client-facing platforms. You will build scalable services, collaborate with product owners and engineers, and help shape platform standards within a technology-driven market making context.

You will work in a dynamic, regulated environment, applying modern CI/CD, DevOps and testing practices to deliver reliable software and improve operational

Qualifications

• Experience in C# .NET.
• Experience in JavaScript/TypeScript/React/NodeJS/GraphQL.
• Experience with NoSQL or RDMS databases.
• Knowledge of CI/CD and DevOps practices.
• Experience with AWS cloud services (ECS/EKS, Lambda, S3, RDS).
• Knowledge of BDD/TDD.
• Experience in Agile/Scrum delivery environments.
• Strong software architecture and design approach.

Responsibilities

• Design, develop and maintain high-quality internal and external applications.
• Build scalable, resilient services supporting multiple business streams.
• Collaborate with product owners, architects and other teams to translate requirements.
• Contribute to architectural design discussions and platform standards.
• Ensure solutions are secure, observable and compliant with governance.
• Support CI/CD pipelines, automated testing and DevOps practices.
• Participate in team discussions and knowledge sharing.
• Adapt to changing priorities in a fast-paced environment.
• Provide production support ensuring high availability.

Skills

C# .NET

JavaScript/TypeScript/React/NodeJS

GraphQL

NoSQL or RDMS databases

CI/CD

AWS (ECS/EKS, Lambda, S3, RDS)

BDD/TDD

Agile/Scrum

Software architecture

Verbal and written communication

Tools

Docker

Microsoft Technologies

Job description

Software Developer | Market Making Technology

London, GB,

Technology,

Full-Time

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 2,300 employees across Europe, Asia and the Americas.

For more information visithttps://www.marex.com/

Job Reference: VN2638

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 Market Making division within Marex encompasses asset classes where Marex acts as a principal risk taker to provide pricing and liquidity to our clients, including but not limited to Base Metals, Precious Metals, Agricultural Products, Energy, US Power, and Environmental contracts.

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.

Role Summary

Market Making at Marex is a critical and growing business, operating across multiple asset classes and geographies. The Market Making businesses have a high degree of complexity, operating with multiple workflows and booking systems, across different Marex entities and in different regions. The business uses several different technologies, some built in-house, others vendor driven.

In this role as a Market Making Senior Software Developer, you will work closely with both business stakeholders and engineering teams to identify, design, and deliver products that strengthen our market making capabilities and improve operational efficiency across the business. Your role is critical to the future success of the Market Making business as we seek to drive technology-led growth.

Responsibilities

Role specific:

• Design, develop and maintain high-quality for internal and external facing applications.
• Build scalable, resilient and high-performance services that support multiple business streams across Marex.
• Collaborate closely with product owners, architects and other engineering teams to translate business requirements into robust technical solutions.
• Contribute to architectural design discussions and help shape platform standards, patterns and best practices.
• Ensure solutions are secure, observable and aligned with enterprise governance and regulatory requirements.
• Support the continuous improvement of CI/CD pipelines, automated testing and DevOps practices.
• Participate actively in team discussions, technical brainstorming sessions and knowledge sharing.
• Adapt quickly to changing priorities and evolving business demands in a fast-paced environment.
• Provide support and troubleshooting for production systems where required, ensuring high availability and reliability.
• Contribute to documentation and maintain clear technical artefacts to support long-term platform sustainability.
• Promote a collaborative, inclusive and high-performing team culture.

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 and Experience

Competencies:

• A collaborative team player, approachable, self-efficient and influences a positive work environment.
• Demonstrates curiosity.
• Resilient in a challenging, fast-paced environment.
• Ability to take a high level of responsibility in a fast pace and high-volume environment.
• Excels at building relationships, networking and influencing others.
• Strategic collaborator with insight and agility, able to anticipate future challenges, ensuring operational effectiveness.

Skills and Experience: Essential:

• Experience in C# .NET.
• Experience in at least one of JavaScript, Typescript, React, NodeJS, GraphQL, Docker.
• Experience of NoSQL or RDMS databases.
• Knowledge of modern CI/CD and DevOps practices.
• Experience working with AWS cloud services (e.g. ECS/EKS, Lambda, S3, RDS, API Gateway).
• Knowledge of BDD/TDD.
• Experience working in Agile / Scrum delivery environments.
• Methodical approach to software architecture and design and experience employing the right design choices for a given project.
• Strong verbal and written communication skills.

Desirable:

• Extended knowledge across multiple asset classes.
• Trade Lifecycle knowledge. Pre-trade, Trade, settlement/clearing, Risk. Full front to back.
• Experience with trading or pricing platforms.
• Microsoft Technologies, Cloud services, hosting and deployment.
• Experience implementing observability tooling (logging, monitoring, tracing).
• Experience working in a regulated environment and knowledge of the risk and compliance requirements associated with this.

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
• 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

Be collaborative - by working together across the organisation, we foster teamwork, can better respond to challenges and successfully deliver for our clients

Act with integrity - we pride ourselves on our honesty and high ethical standards. We apply these values when working with all our clients, colleagues and other stakeholders

Be adaptable and entrepreneurial - we embrace change as markets evolve to constantly increase our efficiency and create innovative solutions for our clients. We are interested in the world around us and inquisitive about understanding the challenges and opportunities our clients face.

Be respectful – how we treat each other, and our clients says everything about who we are. We always act respectfully and treat people fair in everything we do.

Nurture talent – we aim to grow our own talent and make Marex the place ambitious, hardworking and talented people choose to build their career. This means giving and taking stretch opportunities, taking risks, and committing to career development and support – for ourselves, and our teams.

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.

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