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MT

Senior Frontend Engineer

Marathon TS, Inc.
Location not stated
Remote
Senior
2 months ago
  • React.js
  • Next.js
  • Tailwind
  • AI
  • CSS
  • Core Web Vitals
  • JavaScript
  • TypeScript
  • REST API
  • React Query
  • Zustand
  • Redux
  • Git
  • GitHub
  • Data Visualization
2 months ago
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Marathon TS
Senior Frontend Engineer-- React/ Next.js/ Tailwind
REMOTE


Summary

Marathon TS is seeking a Senior Frontend Engineer for a contract role to build and evolve our consumer weather web applications with a strong emphasis on mobile web engineering. You will collaborate with cross-functional teams to deliver fast, responsive experiences including real-time forecasts, interactive maps, and AI-driven features.

The ideal candidate has expert-level command of React, Next.js, and modern CSS/Tailwind, with a focus on mobile web optimization and reliability at scale. Success requires strong technical decision-making and clear communication to align engineering standards with product goals.

Responsibilities

  • Designing, building, and shipping features for client web applications using React and Next.js, with a mobile-first approach throughout.
  • Collaborating with product managers, designers, and data teams to translate weather data and AI capabilities into intuitive, responsive user experiences.
  • Owning performance profiling and optimization targeting Core Web Vitals (LCP, CLS, INP) to ensure smooth rendering, fast load times, and reliable behavior across mobile networks and devices.
  • Building responsive, accessible UI components that work seamlessly across screen sizes, with mobile web as the primary target.
  • Integrating with backend APIs and real-time data streams for weather data, mapping, and analytics.
  • Contributing to frontend architecture decisions, code standards, and review practices that maintain quality across an actively developed codebase.

Qualifications

  • Programming Skills: Proficiency in JavaScript and TypeScript, with strong command of React and Next.js.
  • Mobile Web Expertise: Deep understanding of mobile web performance, responsive design patterns, touch interaction, and the constraints of low-bandwidth mobile environments.
  • Styling: Strong command of modern CSS — including layout, animation, and responsive design patterns.
  • API Integration: Experience consuming REST APIs, handling real-time data, and managing complex client-side state with tools such as React Query, Zustand, or Redux.
  • Performance: Hands-on experience optimizing Core Web Vitals and measuring performance with tools like Lighthouse, WebPageTest, or Chrome DevTools.
  • Version Control: Proficient in Git-based workflows and code collaboration via GitHub or similar platforms.
  • Strong problem-solving instincts and the ability to operate effectively in a self-directed, fast-paced, consumer-facing product environment.

Nice to Have

  • Experience with geospatial data, mapping libraries (e.g., Mapbox, Google Maps), or data visualization.
  • Familiarity with AI feature integration in web products, such as personalization or LLM-backed experiences.
  • Experience with Tailwind CSS or a similar utility-first CSS framework.
Marathon TS is committed to the development of a creative, diverse and inclusive work environment. In order to provide equal employment and advancement opportunities to all individuals, employment decisions at Marathon TS will be based on merit, qualifications, and abilities. Marathon TS does not discriminate against any person because of race, color, creed, religion, sex, national origin, disability, age or any other characteristic protected by law (referred to as "protected status ").

Senior Frontend Engineer · Marathon TS, Inc.

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