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Hiring now · posted today Tech Contract · On-site / hybrid

Senior Software Engineering Experts

$120–$180/hr

Published pay. The final rate depends on your test, experience and country.

United States Language: English Posted 27 Oct 2026

About this role

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our partner is working with a leading AI research lab on a project to improve how AI systems do real-world software engineering work. We're looking for senior software engineers who have deep experience at top technology, quantitative or financial firms. You'll use that expertise to train and evaluate frontier AI models. This role is open to candidates based in the United States, United Kingdom, Canada, Australia or New Zealand. Key Responsibilities

  • Designing realistic, challenging software engineering tasks drawn from real-world work, including but not limited to:

    • feature changes in large codebases

    • debugging and root-cause analysis

    • code review

    • system design and architecture decisions

    • codebase Q&A

    • technical documentation and planning

  • Writing clear task proposals that explain why each task is realistic, how it is verified and what makes it hard for current AI models

  • Illustrating "what good looks like" by writing reference solutions, tests and precise, task-specific criteria covering correctness, architecture, maintainability, style and scope

  • Assessing AI-generated code and engineering work, and working alongside AI coding agents to judge where they succeed and fail

  • Applying consistent, evidence-based judgment so that assessments are reproducible and defensible

  • Taking structured feedback from senior reviewers and iterating on submitted work

Ideal Profile

  • 4+ years of professional software engineering experience in one of these settings:

    • A leading technology or quantitative firm (such as FAANG+, Magnificent 7+, top-tier quant funds or equivalent) with a Mid-senior level title. Machine Learning, Infrastructure, Data, Security and Quant Developer engineering roles may also qualify.

    • A top financial institution (a leading bank, hedge fund or trading firm), working as a software engineer

    • A high-growth technology company that is a household name, with a senior-level title

    • Experience may be split across more than one qualifying employer

  • Strong command of at least one major language (such as Python, Java, C++, Go, TypeScript or Rust), along with system design, testing, debugging and code review

  • Proven ability to work in large, complex production codebases and to judge code quality beyond "it passes the tests"

  • Excellent written English, including the ability to explain technical decisions and trade-offs clearly

  • Bachelor's degree from an English-speaking country

  • A detail-oriented, consistent approach to evaluating complex work

  • Comfortable receiving feedback and calibrating judgment against set standards

Location: United States.

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What to know before you apply

Pay
At the published rate, 10 hours a week would be about $1,200–$1,800 and 20 hours about $2,400–$3,600 before tax. Hours depend on the project, so treat this as a ceiling, not a promise.
Location
Only applicants located in United States can be paid for this role. Platforms usually verify where you are, so apply only if you are based there.
Credentials
The listing asks for 4+ years of experience. Put it in the first line of your profile: reviewers screen for it before anything else.
Timing
This listing is new today. Projects can close once they have enough people, so it is worth applying while it is open.
Test tips for developers
  • Run the code in your head (or for real) before judging it: correctness beats style.
  • Write the smallest failing test that proves a bug.
  • Explain fixes in two or three clear sentences. Written clarity is graded too.
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