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 visit https://www.marex.com/
The Enterprise Technology team sits at the centre of Marex’s technology landscape, delivering a cross- business platform that enables our trading and business streams to innovate and go to market at pace.
We provide shared capabilities including API gateways, centralised APIs, real-time data streaming, connectivity solutions and emerging AI-driven services. By building scalable, resilient and reusable platform components, the team reduces duplication, accelerates product delivery and ensures consistent standards across the organisation. Engine Room is a core part of this strategy, forming the foundation upon which next-generation digital services are built.
Marex recognises the need to provide digital services to give client’s the best possible experience. As such, the technology team at Marex is playing an increasingly important role in the evolution of the firm and enabling business growth and new products and services.
Job Reference: VN2510 & VN2511
Role Summary
Join the Enterprise team working on Engine Room, one of Marex’s most strategic technology initiatives. As a Full Stack C# Developer, you’ll help build and evolve a modern, enterprise-grade platform at the core of the business. We’re growing quickly and need energetic, flexible thinkers who can respond to changing demands, work collaboratively, and bring ideas to the table. If you enjoy solving complex problems in a fast-moving environment and want to help shape technology that truly matters, this is the role for you.
Responsibilities
- Design, develop and maintain high-quality C#/.NET solutions within the Engine Room platform.
- Contribute to the development of shared enterprise capabilities including API gateways, centralised APIs, real-time data streaming, connectivity frameworks and AI-enabled services.
- 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.
Skills and Experience
Essential
- Strong commercial experience in C# and .NET (Core / .NET 6+) development.
- Experience building RESTful APIs and microservices in enterprise environments.
- Good working knowledge of React and modern front-end development principles.
- Experience working with AWS cloud services (e.g. ECS/EKS, Lambda, S3, RDS, API Gateway)
- Experience with event-driven architectures, ideally using Kafka.
- Understanding of CI/CD pipelines, automated testing and DevOps practices.
- Experience with Infrastructure as Code, ideally Terraform.
- Strong understanding of software design principles (SOLID, clean architecture, domain-driven design concepts).
- Experience working in Agile/Scrum delivery environments.
Desired
- Working knowledge of Node.js and/or Python.
- Experience building or contributing to enterprise platform or shared services environments.
- Exposure to API gateway technologies and distributed systems design.
- Experience implementing observability tooling (logging, monitoring, tracing).
- Financial services or capital markets experience (advantageous but not essential). · Experience using CDM as a data model (advantageous but not essential).
Competencies
- 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
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
- 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.
Acting as a role model for the values of the Company:
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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