OpenTrainPhDMaster's

FreeCAD Expert (BIM & IFC Focus)

You will create realistic architectural and engineering models in FreeCAD to support AI training. The work includes building, editing, checking, and troubleshooting BIM and IFC models, then explaining the workflow clearly so it can be reproduced.

Field: Engineering
Where: United States, Algeria, Argentina, Austria, Bahrain, Bangladesh +46 more
Commitment: part time
Asks for: PhD, Master's
Posted: 8 days ago

Pay data for your profession: Engineering AI trainer jobs · PhD AI trainer jobs

How this pay compares

At $94/hr (the midpoint of $65 to $123), this role pays more than 68% of the 207 open engineering roles with a listed pay range, above the median of $80.

Open engineering roles that ask for a PhD have a median of $94/hr (34 roles).

Among platforms with 10 or more priced engineering roles, Mercor has the highest median ($88/hr across 35 roles) and micro1 the lowest ($60/hr across 28).

OpenTrain AI roles that closed since late October stayed listed a median of 31 days (122 roles). OpenTrain AI posted this one 8 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

Where in the listed range$94/hrHours a week15 hrs

Per week, before tax

$1,410

Per month, if the work is steady

$6,110

Show in

Tax: Contract pay arrives with no tax withheld. A US contractor at this rate and these hours would set aside about $1,545 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 engineering 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	36	$88/hr	Infrastructure / Site Reliability Engineer (SRE)$200/hr
OpenTrain AIthis role	132	$85/hr	Chief Engineer / Senior Mechanical Engineer$200-300/hr
Alignerr	14	$61/hr	Robotics Technician$40-120/hr
micro1	29	$60/hr	Member of Technical Staff, Research Engineering$400k-800k/yr
Handshake AI	52	up to $85/hr	Engineering LeadUp to $195/hr

“Up to” rows list only ceilings, so their median is a maximum, not comparable with the range midpoints above them.

All 263 open engineering roles →

The full listing

As posted on OpenTrain AI. See the original

The work

Create and modify 3D CAD and BIM models using FreeCAD.
Work with architectural elements, building structures, and IFC files.
Develop and validate BIM models with FreeCAD BIM tools.
Troubleshoot modeling issues and improve IFC compatibility.
Complete advanced BIM tasks and explain each step clearly.
Write instructions and detailed prompts for BIM and IFC workflows.
Record your screen while completing modeling tasks.

What it pays and takes

This is a part-time contractor role open to candidates across more than 50 countries in the Americas, Europe, Africa, Asia, and the Middle East. English proficiency at B2 level or higher is required.

Pay: $65 to $123 per hour.
Work type: Part-time contract work.
Location: Open to candidates in the countries supported for this role across the Americas, Europe, Africa, Asia, and the Middle East.
Strong, hands-on professional experience with FreeCAD.
Practical experience with BIM modeling and IFC file formats.
Understanding of architectural modeling, 3D CAD, and BIM workflows.
Ability to create, edit, and validate IFC-compatible models.
Access to FreeCAD and the ability to record your screen during work.
Ability to explain technical workflows clearly.
Helpful background: a master's degree or PhD in Architecture, Civil Engineering, or a related field.
Relevant additional experience includes AutoCAD, Revit, other BIM software, architecture, engineering, construction, annotation, RLHF, or AI model evaluation.

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 artificial intelligence, including preparing and reviewing examples that help models learn. OpenTrain is a free platform where people find AI training and data-labeling projects, build a profile, and start applications.

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 $65-123/hr since Nov 3, 2026 with no change.

Across OpenTrain AI's engineering roles, the median listed pay was $69/hr on Nov 1, 2026 (50 roles) and is $85/hr as of Nov 11, 2026 (130 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 engineering roles

All 263 engineering roles →