Contract Full Stack Engineer (Trading)

X4 Technology; Greater London; Hybrid; GBP 65,000 - 90,000; Full time

Job summary

X4 Technology are partnering with a leading energy trading firm on a major Azure Databricks transformation, offering an experienced Full Stack Developer the chance to join a high-profile Trading Technology team in London.

This hands-on role focuses on React.js front-end and Node.js back-end, with exposure to Python, Azure, CI/CD and cloud deployment as you work with Databricks Engineers to enhance trading applications and APIs.

Qualifications

• Proven Full Stack development experience with React.js and Node.js.
• Experience building backend APIs and microservices.
• Exposure to Python, Azure, Docker and Kubernetes is a plus.
• Trading/energy/commodities experience preferred.

Responsibilities

• Build high-quality UI components in React.js.
• Develop backend APIs, services, and microservices in Node.js.
• Deploy applications via cloud services and CI/CD (Azure).
• Bridge data and application layers for intuitive UX.
• Contribute to design patterns and engineering standards.
• Drive performance, resilience, observability, and reliability.
• Support code reviews and Agile delivery.

Skills

React.js

Node.js

Full Stack development

UI development

Tools

Docker

Kubernetes

Azure DevOps

REST APIs

GraphQL

Job description

Project: Trading Applications (Azure/Databricks)

Industry: Energy Trading

Location: London - Hybrid, 3 days/week

Contract: 6 months initial - expected multi-year scope

X4 Technology are partnered with a leading energy trading firm on a major Azure Databricks transformation, offering an experienced Full Stack Developer the opportunity to join a high-profile Trading Technology team.

This is a hands-on role focused heavily on React.js and Node.js, sitting at the intersection of application, data and cloud engineering. You'll work closely with Databricks Engineers to enhance the front-end application layer (React.js) of trading applications while also developing the backend services and APIs that power them (Node.js).

You'll also gain exposure across the wider technology ecosystem, including Python, Azure Cloud Engineering, CI/CD and the deployment, operation and scaling of critical trading applications.

Responsibilities of the Contract Full Stack Engineer (Trading)

• Build high-quality, responsible and scalable UI components (React.js)
• Develop backend APIs, services, microservices and integrations (Node.js)
• Deploy and automate applications through cloud services and CI/CD (Azure)
• Bridge the data and application layers to build intuitive user experiences
• Contribute to technical design, patterns and engineering standards
• Drive performance, resilience, observability and reliability across the stack
• Support code reviews, technical delivery and Agile development

Requirements for the Contract Full Stack Engineer (Trading)

• Proven Full Stack development experience, with strong React.js and Node.js expertise
• Strong backend experience with Node.js, APIs, microservices and integrations
• Exposure to Python, Rest APIs, GraphQL, Azure DevOps, Docker, Kubernetes (beneficial)
• Proven experience within trading (energy/commodities specifically preferred)

An initial 6 month contract with expected continuous extensions across a multi-year programme, offering genuine long-term scope within a major Trading Technology transformation.

X4 Technology have already placed 160+ contractors here, with many extending for 3-4+ years, some 7+

We're shortlisting immediately, with client interview availability from W/C 24th August.