Principal Python Engineer - ML Infrastructure
Alignerr · Remote · Coding / software engineering
Principal Python Engineer - ML Infrastructure is an open role at Alignerr, available remotely, with pay listed as $50–$75/hr.
Applications open on Alignerr’s own site. How we make money.
At a glance
- Pay
- $50–$75/hrStated by Alignerr
- Location
- Remote
- Time commitment
- 20-40 hours per week
- Experience
- 5+ years writing production Python for large-scale infrastructure or platform engineering
- Languages
- Native or fluent English
- Work type
- Coding / software engineering
- Field
- Coding
- Listed
- Since Oct 4, last confirmed Oct 22
The work
A senior Python engineer will architect data pipelines, annotation tools, and evaluation systems to support AI model training infrastructure.
What you would do
- Architect and tune high-performance Python systems that support AI data pipelines and model evaluation
- Create backend services and full-stack tooling for annotation, data validation, and quality control at scale
You're a fit if you
- have 5 or more years of professional production Python experience for large-scale infrastructure
- have deep expertise in distributed computing systems and advanced asynchronous concurrency management
- have thorough knowledge of Python internals, including GIL constraints and memory profiling
- are a senior full-stack developer with a solid systems programming background
Summarised by HumanSourcer from Alignerr’s listing. Check the listing before you apply.
How the pay compares
Higher than 46% of the 79 distinct hourly rates advertised for Coding roles right now. Hourly USD, top of each advertised range, one count per distinct rate. Same method as the Pay Index.
From Alignerr’s listing
“Principal Python Engineer — ML Infrastructure (AI Training) About the Role What if your Python expertise could directly shape the infrastructure that powers the most advanced AI systems in the world?”
About Alignerr: part of Labelbox. See the full profile →
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Frequently asked questions
How do I apply for the Principal Python Engineer - ML Infrastructure role at Alignerr?
Applications go through Alignerr's own portal - HumanSourcer links to the listing and never collects applications or handles hiring. Alignerr's access model is "Open / self-serve" (Open roles / applications). This listing was first seen here on October 4, 2026 and was still live at the last check.
Is the Principal Python Engineer - ML Infrastructure role at Alignerr remote?
Yes - Alignerr lists this role as remote.
What does the Principal Python Engineer - ML Infrastructure role at Alignerr pay?
Alignerr lists this role's pay as $50–$75/hr, quoted from the listing rather than estimated.
What kind of work is Principal Python Engineer - ML Infrastructure?
Coding / software engineering. AI training, evaluation, coding, writing and specialist review
Is Alignerr a legitimate AI-training platform?
Labelbox expert network - and that relationship is rated "Confirmed" here because it can be checked against labelbox.com rather than taken on Alignerr's word. Confidence describes how well the ownership is evidenced. It is not a rating of how the platform treats the people who work for it, which no public source covers reliably.
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