Remote Frontend Engineer: Build & Validate Complex UI

Crossing Hurdles; United States; Remote; USD 96,000 - 138,000; Full time

Job summary

Crossing Hurdles is seeking a Frontend / UI Engineer on a remote contractor basis. You will design and implement multi-step tasks for evaluating UI skills, specify success criteria, provide reference implementations, and review peer submissions to ensure technical accuracy and verifiability.

The ideal candidate has strong React/TypeScript frontend capabilities, a track record of shipping complex interfaces, and the ability to read, modify, and debug real application code.

Qualifications

• Public GitHub profile with substantial, verifiable contributions.
• Strong frontend engineering skills with React, TypeScript, or similar technologies.
• Experience shipping complex interfaces and interactions.
• Ability to read, modify, debug, and validate real application code.
• Experience with UI, graphics, SVG, or Canvas work is valuable.
• Strong written English and ability to explain expected behavior and verification steps.

Responsibilities

• Design multi-step coding tasks grounded in visual material such as screenshots, UI mockups, and diagrams.
• Specify code and artifacts involved in tasks and define expected behavior.
• Define objective success criteria for task verification.
• Provide a working reference implementation for tasks.
• Review tasks built by other contributors for technical accuracy and verifiability.
• Flag ambiguous or ungradable tasks.

Skills

Frontend engineering

Strong communication

English writing

Code debugging

Tools

React

TypeScript

UI design

SVG/Canvas

Job description

Crossing Hurdles is seeking a Frontend / UI Engineer on a remote contractor basis. You will design and implement multi-step tasks for evaluating UI skills, specify success criteria, provide reference implementations, and review peer submissions to ensure technical accuracy and verifiability.

The ideal candidate has strong React/TypeScript frontend capabilities, a track record of shipping complex interfaces, and the ability to read, modify, and debug real application code.