Principal Python Engineer - ML Infrastructure
Alignerr
About this role
The Senior Python Full-Stack Engineer — AI Data & Infrastructure role at Alignerr focuses on building and optimizing systems that support AI data pipelines and evaluation workflows. The engineer will work on real production systems for leading AI labs, contributing to high-impact research across data, tooling, and infrastructure. This position emphasizes deep Python expertise, distributed systems design, and scalable infrastructure to power large-scale data and evaluation platforms.
Skills
About Alignerr
alignerr.comAlignerr is a platform that pays domain experts to train and improve AI by completing remote, flexible tasks on their own schedule. It connects thousands of subject-matter experts with AI teams via a web app to perform data labeling, annotation, evaluation, and other human-in-the-loop work. Experts earn money for contributing their knowledge while companies get higher-quality, domain-specific data and feedback to boost model performance. Alignerr is used to scale and streamline human-centered workflows for AI training and validation.
Recent company news
Business InsiderContractors training Meta's AI say they read intimate talks with its chatbot — and see data that identifies users
Aug 6, 2025
SiliconANGLEReport: Meta is developing chatbots that will send unsolicited messages to users
Jul 3, 2025
Business InsiderLeaked docs show how Meta is training its chatbots to message you first, remember your chats, and keep you talking
Jul 2, 2025
Built InGet Paid to Train AI: The New Side Hustle for Professionals
Nov 12, 2025
TechCrunchMeta has found another way to keep you engaged: Chatbots that message you first
Jul 3, 2025
About Alignerr
Headquarters
San Francisco, CA
Company Size
201-500 employees
Founded
2018
Industry
Technology
Glassdoor Rating
4.2 / 5
Leadership Team
Sarah Johnson
Chief Executive Officer
Michael Chen
Chief Technology Officer
Emily Williams
VP of Engineering
David Rodriguez
VP of Product
Jessica Thompson
Chief Financial Officer
Andrew Park
VP of Sales
Unlock Company Insights
View leadership team, funding history,
and employee contacts for Alignerr.
Salary
$115k – $158k
per year
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