{"schemaVersion":"jobsearcher.job.v1","id":"baba4a2c5c2db6a7aefef1a3","url":"https://jobsearcher.com/jobs/baba4a2c5c2db6a7aefef1a3","canonicalUrl":"https://jobsearcher.com/jobs/baba4a2c5c2db6a7aefef1a3","title":"Front-End Developer — Web & C# (Junior)","description":"Trading Platform UI · Hybrid · $65,000–$75,000About the roleWe're building the next-generation web trading interface alongside our established C# desktop platform, and we want a junior developer to grow with it. You'll write modern React/TypeScript, current-stack codebase — and get exposure to our C# WinForms trading GUI. It's a rare chance to learn high-reliability financial UI engineering with mentorship and real ownership from day one.What you'll do- Build trading UI components in React 19 + TypeScript — order grids, price displays, dashboards, and entry forms- Work with Material-UI, AG Grid, and Tailwind/Emotion to compose responsive, data-dense trading screens- Wire up real-time market data over WebSocket and manage server/client state with TanStack Query and Zustand- Build forms with React Hook Form + Zod validation (order entry, settings, workspace config)- Write unit tests (Vitest + React Testing Library) and E2E tests (Playwright)- Contribute to our C# / .NET 8 WinForms desktop GUI— grid enhancements, data binding, and real-time feed handlersOur stackWeb: React 19, TypeScript, Vite, Material-UI, AG Grid, Tailwind, TanStack Query, Zustand, WebSocket (JSON over a C++ streaming backend).Desktop: C# / .NET 8 (Windows), WinForms, custom high-performance grids, pub/sub messaging from our C++ services.Must-have- Working knowledge of React and TypeScript/JavaScript- Strong HTML/CSS fundamentals and an eye for clean, usable UI that's responsive to both desktop and mobile devices- Understanding of component composition, props, and hooks- Git basics and a testing mindset- Eagerness to learn the trading/finance domainStrongly preferred- Material-UI or another component library- AG Grid or any data-grid library (we render thousands of live rows)- WebSocket / real-time client patterns- Basic SQL (SELECT queries)- Any C# / .NET exposure (or genuine interest — you'll touch the desktop app)Nice-to-have- Experience with financial/trading UIs or real-time dashboards- Vite, Playwright/Cypress, or PWA experience","company":"Matrix Executions","rawCompany":"matrix executions","city":"Chicago","state":"IL","isRemote":false,"isActive":false,"createdAt":"2026-07-01T10:37:47.689Z","occupations":[{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"},{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1255.00","title":"Web and Digital Interface Designers","slug":"web-and-digital-interface-designers"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Front-End Developer — Web & C# (Junior)","description":"Trading Platform UI · Hybrid · $65,000–$75,000About the roleWe're building the next-generation web trading interface alongside our established C# desktop platform, and we want a junior developer to grow with it. You'll write modern React/TypeScript, current-stack codebase — and get exposure to our C# WinForms trading GUI. It's a rare chance to learn high-reliability financial UI engineering with mentorship and real ownership from day one.What you'll do- Build trading UI components in React 19 + TypeScript — order grids, price displays, dashboards, and entry forms- Work with Material-UI, AG Grid, and Tailwind/Emotion to compose responsive, data-dense trading screens- Wire up real-time market data over WebSocket and manage server/client state with TanStack Query and Zustand- Build forms with React Hook Form + Zod validation (order entry, settings, workspace config)- Write unit tests (Vitest + React Testing Library) and E2E tests (Playwright)- Contribute to our C# / .NET 8 WinForms desktop GUI— grid enhancements, data binding, and real-time feed handlersOur stackWeb: React 19, TypeScript, Vite, Material-UI, AG Grid, Tailwind, TanStack Query, Zustand, WebSocket (JSON over a C++ streaming backend).Desktop: C# / .NET 8 (Windows), WinForms, custom high-performance grids, pub/sub messaging from our C++ services.Must-have- Working knowledge of React and TypeScript/JavaScript- Strong HTML/CSS fundamentals and an eye for clean, usable UI that's responsive to both desktop and mobile devices- Understanding of component composition, props, and hooks- Git basics and a testing mindset- Eagerness to learn the trading/finance domainStrongly preferred- Material-UI or another component library- AG Grid or any data-grid library (we render thousands of live rows)- WebSocket / real-time client patterns- Basic SQL (SELECT queries)- Any C# / .NET exposure (or genuine interest — you'll touch the desktop app)Nice-to-have- Experience with financial/trading UIs or real-time dashboards- Vite, Playwright/Cypress, or PWA experience","datePosted":"2026-07-01T10:37:47.689Z","dateModified":"2026-07-01T10:37:47.689Z","hiringOrganization":{"@type":"Organization","name":"Matrix Executions","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Chicago","addressRegion":"IL","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"baba4a2c5c2db6a7aefef1a3"},"url":"https://jobsearcher.com/jobs/baba4a2c5c2db6a7aefef1a3"}}