Front-end Developer (UX/UI)

THE OPPORTUNITY

As our Front-end Developer, you’ll help design and build intuitive, impactful interfaces that empower traders & brokers to make confident, informed decisions.  You’ll collaborate with a skilled team of engineers and innovators, building high-performance applications that deliver real-time insight and impact.

This is your chance to make a tangible mark in a scaling fintech, where your ideas and craftsmanship directly influence the future of commodities trading. If you’re motivated by creating meaningful solutions and enjoy solving complex problems, Sphere is where you can make it happen.

YOUR RESPONSIBILITIES

• Frontend Development: Build and maintain complex React applications with TypeScript, ensuring performance, scalability, and maintainability.
• User Experience Design: Translate deep understanding of trader and broker workflows into intuitive, efficient UI/UX designs.
• Collaboration with Backend: Work with backend engineers to design and refine RESTful APIs, ensuring clean and efficient data exchange.
• Code Quality & Refactoring: Review, refactor, and improve existing frontend code to align with modern best practices.
• Testing & Automation: Establish and maintain a comprehensive test suite, including unit, integration, and end‑to‑end tests (Playwright).
• Mentorship & Standards: Support and foster frontend best practices, coding standards, and UX principles across the team.
• Continuous Improvement: Stay current with emerging frontend technologies and propose improvements to architecture and tooling

YOUR SKILLS & EXPERIENCE

• Experience with React & TypeScript: Advanced proficiency in building production‑grade applications
• UX/UI driven: we are looking for someone who is genuinely passionate about creating an world class experience, fuelled by their commercial experience
• REST Integration: Strong understanding of RESTful API design and consumption
• Testing: Experience setting up and maintaining automated test frameworks, especially Playwright for end‑to‑end testing
• Code Quality: Ability to refactor existing codebases for maintainability, readability, and performance
• Collaboration: Strong communication skills to work with backend developers, product owners, as well as our end users
• Speed of action: Experience from within a Fintech or scaling tech-based firm
• Any experience of the following would also be an advantage:
  • Familiarity with real‑time data handling (WebSockets, SignalR)
  • Knowledge of CI/CD pipelines and DevOps practices
  • Understanding of accessibility standards (WCAG) and responsive design