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 2w 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 C++ could directly shape the infrastructure powering the next generation of AI? We're looking for senior C++ engineers to build and optimize the high-performance systems, data pipelines, and evaluation tooling that leading AI labs depend on — working on real production code with tangible, measurable impact.

This is a fully remote, flexible contract role for engineers who know how to write fast, clean, production-grade C++ and want to do meaningful work at the frontier of AI development.

What You'll Do

Design, build, and optimize high-performance C++ systems supporting large-scale AI data pipelines and evaluation workflows
Develop full-stack tooling and backend services for data annotation, validation, and quality control at scale
Improve reliability, performance, and safety across existing production C++ codebases
Identify bottlenecks and edge cases in data and system behavior — then implement scalable, robust fixes
Collaborate with data, research, and engineering teams to support model training and evaluation workflows
Participate in synchronous design reviews to iterate on system architecture and implementation decisions

Who You Are

Native or fluent English speaker with clear written and verbal communication skills
Full-stack developer with a strong systems programming background
5+ years of professional experience writing production C++ — preferably modern C++17 or C++20
Deep understanding of computer architecture, SIMD intrinsics, and cache coherency to optimize compute-heavy workloads
Experienced with lock-free programming and maximizing parallelism using threading libraries
Able to commit 20–40 hours per week consistently

Nice to Have

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

Why Join Us

Work on cutting-edge AI infrastructure alongside leading research labs
Fully remote and flexible — work when and where it suits you
Freelance autonomy with the structure of high-impact, production-grade engineering work
Make a direct contribution to the systems that power next-generation AI models
Potential for ongoing work and contract extension as new projects launch

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.