Contract Frontend Developer (Commodities Trading)
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Role: Contract UI Software Developer (React / Svelte)
Project: ETRM and trading analytics applications
Industry: Energy trading & commodities
Location: London (hybrid 3 days per week)
Contract: 6 month initial contract (5+ year programme)
Rate: £700-800/d (inside IR35)
X4 Technology are partnered with a leading energy trading firm to hire a Contract UI Software Developer for a high-priority ETRM transformation. The programme focuses on moving from a legacy in-house platform to a modern, cloud-hosted ecosystem, with the goal of delivering UI-heavy, data-driven trading and analytics applications.
Responsibilities for the Contract Frontend Software Developer (Commodities):
- Design and build high-quality web applications (React, Svelte, TypeScript)
- Develop reusable components aligned to enterprise design systems
- Collaborate with UX/UI to deliver intuitive, accessible interfaces
- Integrate with backend APIs (REST / GraphQL)
- Support CI/CD, testing, and code quality practices
- Contribute to code reviews and technical design
- Troubleshoot performance and cross-browser issues
- Work within Agile delivery teams
Requirements for the Contract Frontend Software Developer (Commodities):
- Experience building UI-heavy, data-driven trading applications
- Strong React + TypeScript (Svelte desirable)
- Modern JavaScript (ES6+) and component-based architecture
- State management (Redux, Context API or similar)
- HTML5, CSS3, responsive design
- API integration and async data handling
- Testing frameworks (Jest, React Testing Library)
- Git workflows and CI/CD pipelines
This is a high-impact role with strong visibility and long-term scope, shaping next-generation trading and analytics platforms used across global commodities operations.
If you have relevant front-end experience within trading environments, apply now for immediate consideration.