Senior Software Engineer (Python) - Agent Evaluation - Freelance/Remote 100+ openings

What This Opportunity Involves

We're building a dataset to evaluate AI coding agents - how well a model handles real-world developer tasks. You'll create challenging tasks and evaluation criteria within realistic simulated environments:

• Build realistic developer environments - a virtual company with codebase, infrastructure, and context (tickets, docs, conversations) that forms a believable development history
• Design tasks from intermediate states of these environments - craft the prompt, define what "solved" means, and ensure the task is solvable by an AI agent
• Write tests that verify agent solutions - accept all valid approaches and reject incorrect ones, neither too strict nor too lenient
• Iterate on tasks and tests based on QA feedback - review agent solutions, analyze failures, and refine until the evaluation is fair and robust

What This Is NOT

• Data labeling
• Prompt engineering
• Writing code from scratch - the agent writes most of the code; you guide and evaluate

What We Look For

• 5+ years of professional experience with Python
• Strong experience with FastAPI, pytest, and async/await
• Hands-on experience with Docker, PostgreSQL, and CI/CD pipelines
• Proven experience writing and maintaining automated tests (not just executing them)
• Full-stack experience with React and TypeScript is a plus

English Proficiency

English proficiency at B2 level or higher.

Availability

Availability to work 30+ hours per week.

Why This Is Hard

Frontier models are already good at coding. Creating a task that genuinely challenges the best models is non-trivial. You need to deeply understand where models fail and what scenarios reveal the difference between a good and a bad solution. Tasks have many valid solutions - writing tests that accept all correct solutions and reject incorrect ones is harder than it sounds.

How It Works

• Apply
• Pass qualification(s)
• Join a project
• Complete tasks
• Get paid

Hiring & Onboarding Process

• App review and invitation to a virtual project introduction session (approximately 30 minutes)
• Platform registration and identity verification
• Technical assessment (approximately 35 minutes)
• Background check (completed at no cost to candidates)
• Onboarding and project-specific training tasks
• Begin production work!

Additional Requirements

• Willingness to complete identity verification as part of the onboarding process
• Ability to complete a technical assessment
• Willingness to join and participate in Discord, which will be used for project communication and updates
• Successful completion of a background check is required prior to onboarding
• Reliable internet connection and ability to communicate effectively in a remote environment