Nextmark

UI Engineer

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

  • Design, develop, and maintain robust and scalable UI components using React and Typescript.
  • Collaborate cross-functionally with product managers, designers, and backend engineers to deliver seamless, user-centric solutions.
  • Translate complex business requirements into elegant, responsive, and accessible user interfaces.
  • Champion best practices in UI design, code quality, and performance optimization throughout the development lifecycle.
  • Conduct thorough code reviews and provide mentorship to peers on front-end engineering standards.
  • Proactively identify and resolve UI/UX issues to improve the overall quality and usability of the product.
  • Contribute actively to technical discussions and team documentation, ensuring clear written and verbal communication at all times.

Required Skills & Qualifications

  • 3+ years of professional experience developing web applications with React and Typescript.
  • Demonstrated expertise building complex and responsive UI architectures.
  • Strong foundation in modern JavaScript, HTML5, and CSS3.
  • Excellent written and verbal communication skills, with an emphasis on clarity and collaboration.
  • Proficiency in version control tools such as Git and agile development methodologies.
  • Experience with cross-browser compatibility and web accessibility standards.
  • Self-motivated, detail-oriented, and able to thrive in a remote, fast-paced environment.

Preferred Qualifications

  • Experience working with distributed or customer-facing teams in a remote setting.
  • Knowledge of UI testing frameworks and end-to-end testing best practices.
  • Exposure to design systems and component-driven development workflows.

$30–$70/hr

Remote