Senior Frontend Developer - React
Primary stack
Job description
About the Position
Senior Frontend Developer - React
Location: Remote / Hybrid
About the Project
We are looking for a Senior Frontend Developer to work on a data-rich analytics platform used by operational and management teams to monitor KPIs, investigate incidents, analyze trends, and manage workflow dashboards.
The frontend is built with React 18/19, TypeScript, Vite, TanStack Query, Zustand, and a reusable component library. The role includes regular technical communication with international product, design, backend, and QA teams, so confident spoken English is required.
Responsibilities
- Build complex React views for dashboards, tables, filters, charts, drill-down pages, and admin tools.
- Work with TypeScript, strict typing, reusable components, and scalable frontend architecture.
- Integrate frontend features with REST APIs and real-time updates where needed.
- Improve client-side performance, bundle size, rendering behavior, and loading states.
- Own frontend quality through code reviews, reusable patterns, testing, and technical guidance.
- Work closely with UX/UI designers to implement responsive, accessible, and usable interfaces.
- Support Playwright-based E2E test coverage for critical user flows.
Requirements
- 5+ years of commercial frontend development experience.
- Strong experience with React, TypeScript, modern hooks, component composition, and browser APIs.
- Experience with TanStack Query, Zustand, Redux Toolkit, or similar state/server-state tools.
- Experience building complex data tables, dashboards, filters, forms, and role-based interfaces.
- Good understanding of frontend performance, accessibility, validation, and error handling.
- Experience with testing tools such as React Testing Library, Vitest, Jest, or Playwright.
- Strong spoken English - B2+ or higher, including the ability to explain technical decisions to international stakeholders.
Nice to Have
- Experience with Next.js, micro-frontends, or design system ownership.
- Experience with charting libraries such as Recharts, ECharts, Highcharts, or similar.
- Experience with WebSockets, SSE, or real-time dashboards.
- Background in analytics, SaaS, operations, finance, logistics, or monitoring platforms.
Apply
If you are a frontend engineer who enjoys building polished, data-heavy React applications with real users and real performance constraints, we would be glad to hear from you. Send us your CV and we will contact you to discuss relevant opportunities.
© Infinity Technologies. This job description was sourced from the employer's public career page. TheJob is not the employer — we index the posting and route candidates to the source. All content rights and hiring decisions belong to the employer.
Infinity Technologies, headquartered in London, specializes in creating global R&D hubs to help businesses achieve their goals. Promoting fully remote teams and a lean approach, we eliminate unnecessary office costs, sales, marketing expenses, and overheads for our customers. Our innovative fractal model ensures each R&D hub functions as a self-contained ecosystem tailored to the unique needs of each customer, acting as an extension of their team to develop products, maintain services, or execute strategic objectives.We leverage over 20 trademarked frameworks for building teams, developing software products, and designing outsourcing strategies, focusing on startups andmid-sizedcustomers. Our goal is to help them globalize their R&D efforts efficiently. Infinity Technologies also maintains a library of reusable components, enabling rapid prototyping, idea validation, and faster time to market—all while reducing costs. Since 2003, we have built 81 R&D hubs and currently operate 12 active hubs with distributed teams in 21 countries.With our expertise in cost-effective practices, economies of scale, and lean methodologies, Infinity Technologies empowers businesses to innovate, grow, and succeed in a global marketplace.
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