Senior Frontend Engineer (Webshare product)

We’re a team of 500+ professionals who develop cutting-edge proxy and web data scraping solutions for thousands of the world’s best known businesses, including Fortune 500 companies. 

What’s in store for you:

You’ll be solving complex challenges and maintaining our own infrastructure with 60PB+ monthly data traffic. Here are its scale and maturity in numbers:

- 6PB+ Ceph storage

- 60PB+ monthly data traffic through our systems

- 300k+ service requests/sec processed

- 500k+ Kafka messages/sec streamed

About the Role:

You'll build and maintain the customer-facing dashboard that powers Webshare's proxy infrastructure. Our Next.js application serves many active users managing billions of proxy requests daily. You'll work on a modern React 19 + TypeScript stack with a highly autonomous team, balancing new features, experiments, and technical improvements.

• Build and maintain performant frontend applications using Next.js 15, React 19, and TypeScript that power Webshare's proxy management dashboard.
• Own the design and delivery of UI features covering subscriptions, proxy configuration, analytics, user management, and payments (Stripe integration).
• Collaborate in a highly autonomous team to scope, plan, and execute work with minimal meetings.
• Investigate and resolve production issues using Sentry error monitoring and DataDog browser RUM.
• Balance time equally between features, experiments, tech debt, and bug fixes.
• Write comprehensive tests using Jest, Testing Library, and Playwright for E2E coverage.
• Develop and maintain component library with Storybook and Material UI (MUI 7).
• Continuously improve performance, accessibility, and user experience.

• Strong experience with TypeScript and modern React (hooks, context, concurrent features).
• Proven experience with Next.js (App Router, SSR/SSG, API routes).
• Familiarity with Material UI or similar component libraries.
• Experience with data fetching patterns (SWR, React Query, or similar).
• Comfortable writing tests (unit, integration, E2E).
• Understanding of web performance optimization techniques.
• English fluency to thrive in a remote team.

• Experience with Storybook for component development.
• Familiarity with payment integrations (Stripe).
• Experience with observability tools (Sentry, DataDog, PostHog).
• Knowledge of charting libraries (Recharts, D3).
• Understanding of proxy/networking concepts.

• Gross salary: from 5800 EUR/month +  quarterly KPI-based performance bonus is applicable.