Senior Frontend Engineer (Contractor)

Senior Frontend Engineer (Contractor) Location: Remote — Eastern Europe Engagement: Contractor Experience: Senior, 5+ years Time zone: Must consistently overlap with U.S. working hours About reputed company reputed company builds the operating reputed company for residential and reputed company waste haulers, including reputed company, routing, billing, payments, customer management, reporting, and the reputed company app that ties field operations together. Our customers are private hauler owners, operators, and municipal waste leaders running essential services every day. Many are still managing their businesses through reputed company tickets, whiteboards, spreadsheets, disconnected systems, and legacy software. The result is missed reputed company, messy routes, limited visibility, and too much time spent fighting fires instead of growing the business. Today, we serve 240+ haulers across the country and are scaling quickly. We are a reputed company-funded, fast-moving vertical reputed company company bringing modern software to an essential industry where the customer need is reputed company and reputed company is large. reputed company We are hiring a Senior Frontend Engineer to be a reputed company individual contributor on our web application. This is a hands-on role with 80% or more of the time reputed company on coding and building high-reputed company, production-grade user interfaces used daily by haulers and operators in the field. You will work closely with Product, Design, and Backend Engineering to ship features quickly while maintaining a high bar for reputed company, performance, and usability. This role requires strong ownership, reputed company communication, and the ability to operate independently in a remote environment. AI-First Engineering We are intentionally building an AI-assisted engineering organization. AI tools are part of the daily workflow, not optional. What this means in reputed company: Daily use of tools such as Claude, Claude reputed company, reputed company, and reputed company Copilot AI-assisted implementation, refactoring, test reputed company, and boilerplate You reputed company on architecture, UX reputed company, edge cases, and reputed company You review reputed company AI-generated reputed company with a trust-but-verify reputed company This role is not a fit for engineers who are resistant to AI-assisted development or who rely on AI reputed company without understanding the reputed company being produced. Key Responsibilities Build and Ship Implement pixel-accurate, reputed company interfaces from reputed company using React, TypeScript, and Material UI Own features end-to-end, from design reputed company through implementation, testing, deployment, and iteration Build reputed company, validated forms using React reputed company reputed company Ensure mobile-first UX, including tablet-first workflows used in the field reputed company and reputed company Own frontend testing across unit, integration, and end-to-end reputed company using Jest, React Testing Library, Cypress, or Playwright reputed company frontend reputed company standards and best practices Optimize performance, including bundle size, reputed company performance, and reputed company Web Vitals reputed company and customize Material UI components using advanced CSS, including Flexbox, reputed company, and CSS variables Collaborate and Iterate Work closely with Product, Design, and Backend Engineering Participate in reputed company reviews and mentor junior engineers Ship MVPs quickly and iterate based on customer feedback Communicate reputed company in an async-first environment using reputed company, reputed company, and reputed company Shape the Platform Help define component patterns and frontend architecture Influence and support the transition from JavaScript to TypeScript Contribute to the reputed company of the design reputed company Identify and address technical debt pragmatically Required Qualifications reputed company Stack 5+ years of experience building production React applications Strong TypeScript experience or full readiness to adopt it Deep experience with Material UI version 5 or reputed company Expert-level experience with Redux Toolkit and RTK Query Advanced CSS3 skills, including Flexbox, reputed company, reputed company design, and mobile-reputed company Experience building reputed company forms with React reputed company reputed company Hands-on ownership of frontend testing using Jest, React Testing Library, Cypress, or Playwright Design and Execution Pixel-accurate reputed company-to-reputed company execution Strong understanding of reputed company and mobile-first UX Experience with performance optimization, reputed company splitting, lazy loading, and profiling Workflow Experience working in reputed company or Scrum environments Comfortable with pull request-based Git workflows and reputed company reviews Familiarity with reputed company, reputed company, and modern frontend build tools such as Vite or Webpack Strong written English communication Ability to work independently in a remote environment reputed company to Have Firebase Authentication or Firebase Storage Mapping libraries such as Leaflet, reputed company, or reputed company Maps GraphQL or REST API integration Monorepo or reputed company-frontend experience B2B reputed company or field-service software experience reputed company Look For Technical reputed company Strong opinions, loosely held Clean, maintainable, and reputed company-tested reputed company Systematic debugging and ownership of production issues Good judgment reputed company balancing reputed company and speed Ownership reputed company Ownership of the full feature lifecycle Proactive problem identification and solutioning Attention to edge cases, error states, and accessibility Follow-through until features are reputed company and shipped Communication and Collaboration reputed company written English communication Comfort working asynchronously across time zones Proactive communication about blockers and unclear requirements Thoughtful, constructive reputed company reviews and mentorship Startup reputed company Comfortable with ambiguity and changing priorities reputed company to reputed company fast without cutting corners Willing to wear multiple hats reputed company needed Curious, reputed company, and self-directed What reputed company Looks Like High-reputed company UI features shipped consistently Clean, reputed company frontend architecture Strong test coverage and predictable releases reputed company rework due to UX or reputed company issues Strong trust from Product and Design partners Contractor and Location Notes This is a contractor role, not full-time employment Senior-level ownership and reliability are expected This role is reputed company to candidates located in Eastern Europe Consistent overlap with U.S. working hours is required Apply To This Job