Principal Python Engineer - ML Infrastructure jobs in United States
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Alignerr · 3 weeks ago

Principal Python Engineer - ML Infrastructure

positionUnited States
timeContract
remoteRemote
senioritySenior Level
money$50/hr - $75/hr
date5+ years exp

Alignerr connects top technical experts with leading AI labs to build, evaluate, and improve next-generation models. The role involves designing, building, and optimizing high-performance systems in Python to support AI data pipelines and evaluation workflows, along with developing full-stack tooling and backend services for data annotation and quality control.

Computer Software

Responsibilities

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

Qualification

Production PythonDistributed computing systemsPerformance optimizationFull-stack developmentAI/ML workflowsData annotation experienceDeveloper tooling experienceClear communication

Required

Native or fluent English speaker
Full-stack developer experience with a strong systems programming background
5+ years of professional experience writing production Python, specifically for large-scale infrastructure or platform engineering
Expertise in designing distributed computing systems and managing concurrency with advanced asynchronous patterns
Deep understanding of Python internals (GIL limitations, memory profiling) and experience optimizing performance for compute-heavy workloads
Clear written and verbal communication skills for driving technical strategy and architectural decisions
Ability to commit 20–40 hours per week

Preferred

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

Company

Alignerr

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We're looking for experts to help train better AI.
people-size11-50 employees
web-link
https://www.alignerr.com/

Funding

Current Stage
Early Stage
Company data provided by crunchbase