Contract Full Stack Developer (Commodities)

X4 Technology; Greater London; Hybrid; GBP 96,000 - 138,000; Full time

Job summary

X4 Technology in London is seeking a contract Full Stack Developer to join their Trading technology team. The role involves designing, developing and delivering scalable full-stack applications, APIs, microservices and integrations across the trading landscape.

You will leverage Azure and Databricks to build robust, high-performing solutions with a focus on scalability, reliability and performance. The position supports a hybrid working pattern with 3 days on site.

Qualifications

• Experience building REST APIs/ GraphQL, microservices and integrations.
• Strong Azure experience with SQL/database knowledge; exposure to Databricks a plus.
• CI/CD experience with GitHub Actions, Azure DevOps or Jenkins; Docker/Kubernetes beneficial.

Responsibilities

• Design, develop and deliver scalable full-stack applications, APIs, microservices and integrations across the Trading landscape.
• Leverage Azure and Databricks to build robust, high-performing solutions with focus on scalability, reliability and performance.
• Contribute to technical architecture, solution design and reusable engineering patterns with high coding standards.
• Own CI/CD pipelines, automated deployments, monitoring and performance optimisation for production readiness.
• Partner with Product Owners, Designers and engineering teams, contributing to Agile delivery and technical decisions.

Skills

REST APIs

GraphQL

Microservices

CI/CD

GitHub Actions

Azure

Databricks

Docker

Kubernetes

Agile/Scrum

SQL

Tools

Azure DevOps

Jenkins

GitHub Actions

Databricks

Docker

Kubernetes

Job description

Project: Trading applications (Azure/Databricks)

Location: London, hybrid (3 days per week)

Contract: 6 months initial (multi-year scope)

X4 Technology are partnered with a leading commodity trading firm offering the opportunity for a contract Full Stack Developer to join their Trading technology team.

This is an excellent opportunity for an experienced Full Stack Developer to design, develop and deliver scalable, high-performance applications, working across both front-end and back-end technologies

Responsibilities for the contract Full Stack Developer (Commodities)

• Design, develop and deliver scalable full-stack applications, APIs, microservices and integrations across the Trading landscape
• Leverage Azure and Databricks to build robust, high-performing solutions, with a focus on scalability, reliability and performance
• Contribute to technical architecture, solution design and reusable engineering patterns, while maintaining high coding and development standards
• Own CI/CD pipelines, automated deployments, monitoring and performance optimisation, ensuring solutions are reliable and production-ready
• Partner with Product Owners, Designers and engineering teams, contributing to Agile delivery, code reviews and technical decision-making

Requirements for the contract Full Stack Developer (Commodities)

• Strong experience building REST APIs / GraphQL, microservices and integrations, with a good understanding of scalable and event-driven architectures
• Hands-on experience with Azure, alongside strong SQL/database knowledge and exposure to Databricks or modern data platforms
• Proven experience with CI/CD, GitHub Actions, Azure DevOps or Jenkins, with Docker/Kubernetes and cloud-native development considered a strong advantage
• Strong problem-solving and communication skills, with experience working in Agile/Scrum environments, collaborating with stakeholders and taking ownership of technical delivery

Excellent opportunity to join a high-profile technology team within the cutting-edge energy trading space, working across modern full-stack, cloud and data technologies.