OpenTrain

Mid-Level Full-Stack Engineer (English)

Build complete, production-quality applications from scratch. The finished software will serve as examples for training AI models.

Field: Software & coding
Where: United States, Albania, Algeria, Antigua and Barbuda, Armenia, Australia +89 more
Commitment: part time
Hours: up to 20/week
Posted: 6 days ago

Pay data for your profession: Software engineer AI trainer jobs

How this pay compares

At $80/hr, this role pays more than 76% 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 6 days ago.

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

Rate

$80/hr

Hours a week (listing allows up to 20)20 hrs

Per week, before tax

$1,600

Per month, if the work is steady

$6,933

Show in

Tax: Contract pay arrives with no tax withheld. A US contractor at this rate and these hours would set aside about $1,753 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

Build complete, production-quality applications from scratch. The finished software will serve as examples for training AI models.

Create dashboards, management systems, workflow tools, and data-driven platforms.
Build features such as authentication, data management, real-time functions, reporting, and business logic.
Connect frontend interfaces with caching services and SQL databases.

What it pays and takes

Pay: $80 per hour.
Hours: At least 20 hours per week.
Location: Remote, open to candidates in supported countries.
Work type: Contract, part time.
Language: Fluent in English.
Skills: Strong Next.js skills, including server-side rendering and API routes; Redis experience with caching, session management, and real-time data; and SQL database skills with PostgreSQL, MySQL, or similar.
You should be able to design database schemas, queries, relationships, and performance improvements, and build applications that connect frontend, caching, and database layers.
Experience with Tailwind CSS and responsive interface development using utility classes is required.

How it works

Apply on OpenTrain with your resume, then complete your application on the hiring site.

About AI training work

AI training is the human work of preparing examples that help AI models learn. Software engineers contribute working applications that show models how complete software can be designed and built. OpenTrain is a free platform where people find AI training projects, build a profile, and apply.

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 $80/hr since Nov 7, 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

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