Nextmark

Front-end Developer (Typescript)

Contractor · Remote · 10 openings

In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input. No prior experience in AI is required — your domain knowledge is what matters.

Key Responsibilities

  • Develop, optimize, and maintain scalable frontend components using Typescript, HTML, CSS, and JavaScript.
  • Integrate RESTful APIs and efficiently manage data flow between the frontend and backend services.
  • Ensure high standards of code quality and maintainability through code reviews, documentation, and best practices.
  • Implement and maintain robust testing strategies, including automation testing for continuous integration and deployment pipelines.
  • Collaborate closely with designers, backend developers, and other stakeholders to deliver seamless user interfaces.
  • Stay up-to-date with the latest in tooling and ecosystem advancements, identifying opportunities to improve workflows and application performance.
  • Communicate effectively in both written and verbal forms, contributing ideas that drive project success and team cohesion.

Required Skills & Qualifications

  • Expert-level proficiency in HTML, CSS, and modern JavaScript.
  • Deep experience with Typescript and its application in large-scale web projects.
  • Demonstrated expertise in API integration and data handling best practices.
  • Solid understanding of the frontend tooling ecosystem (e.g., Webpack, Babel, npm, Yarn).
  • Proven track record with automation testing frameworks and methodologies.
  • Strong focus on code quality, maintainability, and performance optimization.
  • Exceptional written and verbal communication skills, with a keen attention to collaboration and clarity.

Preferred Qualifications

  • Experience working in distributed, remote-first engineering teams.
  • Background in continuous integration, deployment, and monitoring of frontend applications.
  • Familiarity with modern design systems and UX/UI best practices.

$20–$45/hr

Remote