Job purpose
We’re looking for a contract UI-focused React developer to help build and refine analytical, data-driven web
applications for a quantitative trading firm. This role is hands-on and implementation-driven, working in
production React codebases where data visualization, performance, and correct client/server separation are
critical
Key responsibilities
- Building and maintaining UI components in React + TypeScript
- Developing data visualization and analytical interfaces (tables, charts, dashboards)
- Implementing responsive layouts and design systems using Tailwind CSS
- Working within applications that mix server-side and client-side logic
- Making informed decisions about what belongs on the client vs. the server
- Integrating UI with backend APIs that serve time-series and quantitative data
- Optimizing rendering performance for large datasets and frequent updates
- Debugging issues related to async data, re-renders, and UI state consistency
Key competencies :
Required Skills
- Strong experience with React and TypeScript
- Clear understanding of client vs. server responsibilities in modern React apps
- Experience building data-heavy UIs (tables, charts, filters, dashboards)
- Comfortable working with asynchronous data flows and state management
- Solid command of Tailwind CSS and responsive design patterns
- Ability to reason about performance, memoization, and rendering efficiency
- Able to work independently in an existing, complex codebase
Nice to Have
- Experience with financial, trading, or analytical applications
- Familiarity with charting or visualization libraries (e.g. ECharts, Chart.js)
- Experience handling time-series data or streaming updates
- Strong attention to UI precision and data accuracy
- Experience collaborating via Git (PRs, reviews, async communication)
