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Crossing Hurdles Logo

Software Engineer (JavaScript) | $125/hr Remote

Crossing Hurdles

$85 - $125
Nov 7, 2025
Remote, US
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Crossing Hurdles is looking for a Software Engineer to support AI research labs in building and training cutting-edge AI models by analyzing code repositories and evaluating AI systems' reasoning capabilities.

Requirements

  • Experience using coding agents or Large Language Models (LLMs) as part of engineering workflows (e.g., Copilot, Claude, GPT-4, Replit Agents).
  • Fluent in Python and JavaScript/TypeScript; comfortable with Java, Go, Rust, C++, or C-Sharp.
  • Strong architectural understanding and ability to identify design patterns and abstractions.

Responsibilities

  • Analyze large, production-grade code repositories to devise and evaluate technically challenging coding questions.
  • Systematically explore multiple modules and connect related functions across files for cross-file logical synthesis.
  • Assess AI systems’ reasoning capabilities about software architecture, data flow, and performance.
  • Base conclusions on evidence, citing specific files, functions, and code lines.
  • Write clear, structured technical documentation conveying precise insights.

Other

  • Strong years of elite software engineering experience at top-tier startups, quantitative trading firms, hedge funds, or similar environments.
  • Computer Science degree from a leading university or equivalent practical expertise.
  • Exhibits intellectual honesty and precision with ability to acknowledge uncertainty.
  • Hourly Contract
  • Remote