Sr. Full-Stack Software Engineer
You will contribute to AI training through software development, technical problem-solving, system architecture, debugging, and code evaluation. The work covers both front-end and back-end systems, including user-facing features, services, APIs, data models, and external…
- Field
- Software & coding
- Where
- United States, Algeria, Argentina, Austria, Bahrain, Bangladesh +46 more
- Commitment
- part time
- Hours
- up to 20/week
- Posted
- today
Pay data for your profession: Software engineer AI trainer jobs
How this pay compares
At $75/hr (the midpoint of $50 to $100), this role pays more than 66% of the 220 open software & coding roles with a listed pay range, above the median of $70.
Among platforms with 10 or more priced software & coding roles, Mercor has the highest median ($88/hr across 18 roles) and OpenTrain AI the lowest ($65/hr across 107).
OpenTrain AI roles that closed since late October stayed listed a median of 31 days (122 roles). OpenTrain AI posted this one today.
Computed from 2,746 open roles we track across Mercor, micro1, Handshake AI, Alignerr, Appen and OpenTrain AI, refreshed daily. Midpoints of listed ranges; “up to” ceilings are left out of medians.
What you would earn at this rate
Per week, before tax
$1,500
Per month, if the work is steady
$6,500
- Tax
- Contract pay arrives with no tax withheld. A US contractor at this rate and these hours would set aside about $1,643 a month for self-employment tax plus federal income tax at the 12% bracket (25%, before state tax). Outside the US, your own country's rules apply.
Assumes paid hours only; unpaid assessments, onboarding and gaps between projects lower the real figure. Full take-home calculator · Track what you actually earn
Open software & coding roles on each platform
The same kind of work, priced on every platform we track, with the best-paid open role on each.
| Platform | Open | Median | Best-paid open role |
|---|---|---|---|
| Mercor | 20 | $88/hr | Legacy Codebase Migration Expert$200/hr |
| micro1 | 25 | $75/hr | Strategic Project Lead, Coding/SWE$300k-500k/yr |
| Alignerr | 73 | $70/hr | DevOps / IaC Engineer$90-120/hr |
| OpenTrain AIthis role | 123 | $65/hr | Software Engineer, AI Code Evaluation$200/hr |
| Handshake AI | 10 | up to $90/hr | Senior Software Engineer - AI Data (US)Up to $150/hr |
“Up to” rows list only ceilings, so their median is a maximum, not comparable with the range midpoints above them.
All 251 open software & coding roles →The full listing
As posted on OpenTrain AI. See the original
The work
You will contribute to AI training through software development, technical problem-solving, system architecture, debugging, and code evaluation. The work covers both front-end and back-end systems, including user-facing features, services, APIs, data models, and external integrations.
You will also create and solve challenging engineering tasks, translate complete coding builds between programming languages, and assess AI-generated solutions against standards for correctness, completeness, performance, security, and maintainability.
- Develop, modify, and debug front-end and back-end application components.
- Build user-facing features with supporting services, APIs, and data models.
- Trace requests and data across browsers, applications, APIs, services, databases, and external integrations.
- Work in unfamiliar repositories and understand existing application architecture.
- Diagnose issues involving application state, API contracts, authentication, persistence, networking, and deployment.
- Evaluate and improve code written in multiple programming languages.
- Review and validate challenging software-engineering tasks and AI-generated solutions.
What it pays and takes
This is part-time contractor work for an AI training and software evaluation project.
- Pay: $50 to $100 per hour equivalent, paid per task that meets the project specifications.
- Time: Less than 20 hours per week.
- Work type: Part-time contract work.
- Location: Open to candidates in the United States, Canada, the United Kingdom, Europe, Asia, Africa, the Middle East, and Latin America, including the listed eligible countries.
- Language: Fluent in English.
- Strong professional experience developing production full-stack applications.
- Hands-on experience across both front-end and back-end engineering.
- Production experience with multiple programming languages.
- Strong knowledge of browser applications, APIs, application state, databases, and service integration.
- Experience understanding and contributing to complete software-system architecture.
- Ability to work effectively in unfamiliar codebases.
- Strong debugging and technical problem-solving skills.
How it works
You apply here in about two minutes and finish on the hiring platform. The next step is a short AI interview (technical roles include a coding challenge). Passing it is how you qualify for paid tasks, so take it soon after you are invited.
The hiring platform's application for this job asks for your resume, your LinkedIn profile, your phone number, your location and answers to 5 screening questions.
About AI training work
AI training is the human work behind systems that learn from examples, including writing, reviewing, and evaluating computer code. Experienced software engineers help improve these systems by judging whether generated solutions are correct, secure, complete, efficient, and maintainable.
From applying to your first payment on OpenTrain AI
- 1
Create a profile
Create a free OpenTrain profile with your domains, languages and hourly rate.
- 2
Apply
Apply to the listing. Some listings hire through OpenTrain; others send you to the hiring platform.
- 3
Funded milestones
The client funds each milestone before work starts.
- 4
First payment
OpenTrain pays out to your connected payout method when the client approves the milestone. It doesn't publish a fixed payout schedule.
Sources: OpenTrain: AI training careers, OpenTrain docs: invoicing and payouts
Full OpenTrain AI profile: watch-outs and the public record →Pay history
OpenTrain AI has listed this role at $50-100/hr since Nov 11, 2026 with no change.
Across OpenTrain AI's software & coding roles, the median listed pay was $65/hr on Nov 1, 2026 (72 roles) and is $65/hr as of Nov 11, 2026 (107 roles).
What workers report about OpenTrain AI
Anonymous reports from people who applied or worked there: whether they got work, what they were paid and how fast.
Other software & coding roles
- Strategic Project Lead, Coding/SWEmicro1$300k-500k/yr
- Legacy Codebase Migration ExpertMercor$200/hr
- Open Source GitHub Maintainer Code ReviewOpenTrain$120-200/hr
- Software Engineer, AI Code EvaluationOpenTrain$200/hr
- Software Engineer (Electron.js)micro1$200k-320k/yr
- DevOps / Platform Engineer Talent NetworkMercor$70-150/hr