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 10d 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 C# expertise could directly shape the infrastructure powering the next generation of AI? We're looking for a Senior Backend Engineer to design and build the data pipelines, annotation tooling, and evaluation systems that leading AI labs depend on to train and improve their most advanced models.

This is a fully remote, flexible contract role for a seasoned engineer who thrives on solving hard systems problems and wants their work to matter at scale.

What You'll Do

Design, build, and optimize high-performance C# systems supporting large-scale AI data pipelines and evaluation workflows
Develop backend services and tooling for data annotation, validation, and quality control at scale
Improve the reliability, performance, and safety of existing C# codebases
Collaborate with data, research, and engineering teams to accelerate model training and evaluation
Identify and resolve bottlenecks and edge cases across data and system behavior
Participate in synchronous design reviews and iterate rapidly on architecture and implementation decisions

Who You Are

5+ years of professional experience building scalable backend services in C#
Strong systems programming background with full-stack development experience
Deep expertise in modern frameworks for RESTful APIs and RPC services
Experienced with cloud-native data services and message bus architectures for workflow orchestration
Native or fluent English speaker with clear written and verbal communication skills
Self-directed and reliable — able to commit 20–40 hours per week and deliver independently

Nice to Have

Prior experience with data annotation platforms, data quality pipelines, or evaluation systems
Familiarity with AI/ML workflows, model training pipelines, or benchmarking infrastructure
Experience with distributed systems design or developer tooling
Background working directly with or alongside AI research teams

Why Join Us

Work on real production systems used by leading AI research labs — not toy projects
Fully remote and asynchronous-friendly — work from wherever you do your best work
Flexible contract structure with meaningful, high-impact technical work
Collaborate with top engineers and researchers pushing the boundaries of AI
Potential for ongoing contract extensions as projects grow and new initiatives 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.