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Hiring now · posted 6d ago Tech Contract · Remote

Senior Software Engineer

$80–$120/hr

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

Remote · Worldwide 10 openings Language: English Posted 8 Nov 2026

Senior Software Engineer is remote AI-training work for developers, paying $80–$120/hr, open to applicants worldwide. Posted 8 Nov 2026, still open on 15 Nov 2026. Zekai lists it for free; the application goes to the employer's platform.

About this role

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Job Title: Senior Software Engineer

Job Type: Contractor (~15 hrs a week)

Location: Remote (Globally)

Job Summary: 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.

As an expert you will be creating Reinforcement Learning Environments which test an AI model's ability to solve complex software engineering workflows. These workflows are similar in scope to common DevOps | CI/CD | Debugging workflows using common cli tools such as git, docker, gdb, asan, ffmpeg and many more. Your task will be to create reproducible rl environments that test a model's ability to solve these workflows along with a golden reference solution.

Required Skills and Qualifications:

  • Proficiency in C++, Python, JAVA, GoLang, Typescript, or Rust.
  • Deep understanding of algorithms, data structures, and performance tuning.
  • Demonstrated experience in debugging complex software issues and delivering maintainable solutions.
  • Strong background in feature development and codebase refactoring.
  • Proven ability to optimize software for performance and scalability.
  • Exceptional written and verbal communication skills, with a keen attention to detail.
  • Track record of success in collaborative, cross-functional teams, ideally in remote settings.

Preferred Qualifications:

  • Previous experience working on large-scale, distributed codebases.
  • Familiarity with modern AI or machine learning systems is a plus, though not required.
  • Background in participating in rigorous code reviews and contributing to the development of software best practices.

Process:

  • Apply to the role, filling out the screening questions
  • Complete AI interview (aprox. 30 minutes)
  • Technical Assessment (Tentative)
  • Hiring Manager review

Compensation Structure

Compensation is output-based; experts are paid per task that meets the project specifications. The time required to complete work may vary depending on the expert’s experience and workflow. Minimum submission requirements apply. Experts must submit a minimum of tasks per week.

Start Timeline & Availability

We typically fill roles within 48 hours and are looking for experts ready to jump in right away. If selected, we expect you to start your first tasks within 24–48 hours of completing onboarding.

This is a 100% remote contract role, open to applicants worldwide in the countries the employer accepts.

Python3JAVARustAlgorithmsBasics C++Typescriptbug fixingfeature implementationcodebase refactoringperformance optimization

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What to know before you apply

Pay
At the published rate, 10 hours a week would be about $800–$1,200 and 20 hours about $1,600–$2,400 before tax. Hours depend on the project, so treat this as a ceiling, not a promise.
Location
Open worldwide in the countries the employer accepts. Payments usually go out through services like PayPal or Wise, so check one of them works in your country.
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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