Senior Frontend Engineer (React/TypeScript) — Remote & AI Tools

United States Digital Space LLC; United States; Remote; USD 120,000 - 160,000; Full time

Job summary

Routescanner is seeking a senior frontend engineer to own and scale our React/TypeScript frontend. You will build advanced UI components for route search, maps, and data tables, while collaborating with backend engineers on API contracts and integrating Auth0, PostHog, and Sentry.

Expect a remote-friendly environment with an emphasis on performance and architecture. The role requires strong frontend fundamentals, experience with REST APIs, and a self-directed work style in a fast‑growing

Qualifications

• 5+ years of professional frontend development with React and TypeScript.
• Fluent in Polish and English.
• Strong understanding of component architecture, state management, and frontend performance.
• Experience working with REST APIs and designing frontend data flows.
• Solid command of modern CSS and responsive design.
• Experience with CI/CD pipelines and Git-based workflows.
• Clean code as a practice — you write components your colleagues can confidently extend.
• Genuine ability to self‑direct: you can take a loosely defined problem, break it down, and deliver.

Responsibilities

• Build and maintain a React/TypeScript frontend at real scale.
• Own complex UI components: route search, filtering, map-based visualization, data tables, and comparison views.
• Work closely with backend engineers on API contracts (REST/BFF).
• Integrate third‑party tools including Auth0, PostHog, Sentry, and mapping/routing engines.
• Maintain high performance standards — lazy loading, code splitting, bundle optimization.
• Leverage AI‑assisted development tools as part of your daily workflow.
• Ship via GitHub Actions CI/CD pipelines.
• Participate in architecture and UX decisions — your opinion will carry weight.

Skills

React

TypeScript

Frontend architecture

Frontend performance

REST APIs

CSS

CI/CD

GitHub Actions

AI-assisted development tools

Polish language

English language

Tools

Sentry

PostHog

Maps/Routing engines

GitHub Actions

Claude AI

Job description

Routescanner is seeking a senior frontend engineer to own and scale our React/TypeScript frontend. You will build advanced UI components for route search, maps, and data tables, while collaborating with backend engineers on API contracts and integrating Auth0, PostHog, and Sentry.

Expect a remote-friendly environment with an emphasis on performance and architecture. The role requires strong frontend fundamentals, experience with REST APIs, and a self-directed work style in a fast‑growing