Hauler Hero Inc. - Senior Frontend Engineer (Contractor)
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Requirements
• Timezone: Must overlap with US working hours • 5+ years building production React applications • Strong TypeScript experience or full readiness to adopt it • Expert-level use of Redux Toolkit and RTK Query • Advanced CSS3 including Flexbox, Grid, responsive design, and mobile-first principles • Experience building complex forms with React Hook Form • Hands-on ownership of frontend testing (Jest, RTL, Cypress or Playwright) • Design & Execution • Pixel-accurate Figma-to-code execution • Strong understanding of responsive and mobile-first UX • Experience with performance optimization, code splitting, lazy loading, and profiling • Experience working in Agile or Scrum environments • Comfortable with PR-based Git workflows and code reviews • Familiarity with Jira, Slack, Figma, and modern frontend build tools (Vite or Webpack) • Firebase (Auth or Storage) • Mapping libraries (Leaflet, Mapbox, Google Maps) • GraphQL or REST API integration • B2B SaaS or field-service software experience • What We Look For • Technical Excellence • Strong opinions, loosely held • Clean, maintainable, well-tested code • Systematic debugging and ownership of production issues • Good judgment balancing quality and speed • Ownership Mindset • Ownership of the full feature lifecycle • Proactive problem identification and solutioning • Attention to edge cases, error states, and accessibility • Follow-through until features are stable and shipped • Communication & Collaboration • Clear written English communication • Comfort working async across time zones • Proactive about blockers and clarifying requirements • Thoughtful, constructive code reviews and mentorship • Startup Mindset • Comfortable with ambiguity and changing priorities • Move fast without cutting corners • Willing to wear multiple hats when needed • Curious, resourceful, and self-directed • What Success Looks Like • High-quality UI features shipped consistently • Clean, scalable frontend architecture • Strong test coverage and predictable releases • Minimal rework due to UX or quality issues • Strong trust from Product and Design partners • Contractor & Location Notes • This is a contractor role, not full-time employment • Candidates must be based in LATAM • Senior-level ownership and reliability are expected • Consistent overlap with US working hours is required
Responsibilities
• Implement pixel-accurate, responsive interfaces from Figma using React, TypeScript, and Material-UI (MUI) • Own features end-to-end from design handoff through implementation, testing, deployment, and iteration • Build complex, validated forms using React Hook Form • Ensure mobile-first UX, including tablet-first workflows used in the field • Quality & Craft • Own frontend testing across unit, integration, and e2e layers (Jest, React Testing Library, Cypress or Playwright) • Drive frontend quality standards and best practices • Optimize performance including bundle size, render performance, and Core Web Vitals • Extend and customize MUI components using advanced CSS (Flexbox, Grid, CSS variables) • Collaborate & Iterate • Work closely with Product, Design, and Backend Engineering • Participate in code reviews and mentor junior engineers • Ship MVPs quickly and iterate based on customer feedback • Communicate clearly in an async-first environment using Slack, Notion, and Loom • Shape the Platform • Help define component patterns and frontend architecture • Influence and support the transition from JavaScript to TypeScript • Contribute to the evolution of the design system • Identify and address technical debt pragmatically
Benefits
• Equity opportunities mentioned as part of the benefits package. • Paid time off (PTO) is included in the compensation details provided. • Perks such as Slack and Notion for communication tools are listed but do not directly relate to financial or tangible benefits; however, they contribute to overall job satisfaction which can be considered an indirect benefit. • Remote work options available with the stipulation of overlapping US working hours due to AI tool usage requirements.
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