Is this job worth applying to?

Pay

Below typicalTops out at $75/hr. The typical top rate across 237 priced coding listings is $90/hr.

Getting in

Hard to get in~1–2 hours of assessments. Valid government photo ID.

Steady work

Work is patchyFeast-or-famine project volume.

Payout record

Some delaysSchedule: weekly, by Friday for the prior Monday–Sunday. Paid via Stripe or PayPal (depends on country).

Freshness

RecentPosted 11d ago. Still listed on Alignerr on Nov 6, 2026.

Where you live

Not statedThe listing names no country.

The job description

About the Role

What if your mastery of Rust could directly shape the infrastructure powering the next generation of AI models? We're looking for a Principal Rust Engineer to design and build high-performance systems at the heart of real AI research and production workflows — working alongside leading AI labs on the tools and pipelines that make cutting-edge AI possible.

This is a fully remote, flexible contract role for an experienced Rust engineer who thrives on hard technical problems, cares deeply about performance and correctness, and wants their work to matter at scale.

What You'll Do

Design, build, and optimize high-performance Rust systems supporting AI data pipelines and model evaluation workflows
Develop full-stack tooling and backend services for large-scale data annotation, validation, and quality control
Improve reliability, performance, and memory safety across existing production Rust codebases
Collaborate with data, research, and engineering teams to accelerate model training and evaluation workflows
Identify and resolve bottlenecks and edge cases in complex data and system behavior
Participate in synchronous design reviews and contribute to high-impact architectural decisions

Who You Are

Native or fluent English speaker with clear written and verbal communication skills
5+ years of professional experience writing production-grade Rust for data-intensive applications
Deep expertise in memory management, ownership semantics, and zero-copy deserialization with minimal runtime overhead
Proven experience integrating Rust with machine learning frameworks or columnar data standards to support model training workflows
Able to commit 20–40 hours per week with reliable availability
You write code that other senior engineers learn from — and you're proud of it

Nice to Have

Prior experience with data annotation, data quality, or evaluation systems
Familiarity with AI/ML workflows, model training pipelines, or benchmarking infrastructure
Experience with distributed systems, developer tooling, or systems programming at scale

Why Join Us

Work on real production systems for leading AI research labs — not toy problems
Fully remote and flexible — work when and where you do your best thinking
Freelance autonomy with the structure of meaningful, high-impact engineering work
Contribute to infrastructure that directly shapes how next-generation AI models are built and evaluated
Potential for ongoing work and contract extension as projects grow and evolve

How do you apply to Alignerr?

Apply on Alignerr

The Apply button opens this post on Alignerr's own site. You apply with them, not with Rubric. Budget about 1–2 hours of assessments.

Get through screening

What Alignerr asks for after you apply:

Take the TestGorilla skills assessment (usually one attempt per role)
Verify your identity with Persona
Join the Alignerr Slack community
Set up payouts once you are assigned to a project

Start work and get paid

Pay schedule: weekly, by Friday for the prior Monday–Sunday. Paid via Stripe or PayPal (depends on country). You're paid for the work they hand out, not a fixed salary.

Alignerr also needs

Valid government photo ID
Degree or professional experience for expert roles
Webcam for proctored assessments on some roles

Red flags

Red flagLong gaps with no project after passing
Red flagWorker reports of delayed or withheld payments on Glassdoor

What is Alignerr like to work for?

Labelbox's contractor network, which hires generalists and domain experts to label data and write and grade AI training tasks.

Advertised pay	$15–150/hr
Getting in	Hard to get in
Application takes	~1–2 hours of assessments
How you get paid	Weekly, by Friday for the prior Monday–Sunday, via Stripe or PayPal (depends on country)
Payout record	Some delays
Countries	Accepts most countries but blocks signups from about two dozen; posts India-specific roles such as Hindi, Telugu and Indian-English language and cultural review work.

Generalist and bilingual work is around $15–20/hr, coding QA $30–40/hr, and senior software, advanced math, medical and law roles $70–150/hr; some projects pay per approved task.