Principal Python Engineer - ML Infrastructure

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This range is provided by Alignerr. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

$50.00/hr - $75.00/hr

Alignerr connects top technical experts with leading AI labs to build, evaluate, and improve next-generation models. We work on real production systems and high-impact research workflows across data, tooling, and infrastructure.

Senior Python Full-Stack Engineer — AI Data & Infrastructure

Type:
Contract, Remote Commitment: 20–40 hours/week Compensation:
Competitive, hourly (based on experience)

• 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

• 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.

• 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

• Submit your resume
• Complete a short technical screening
• Project matching and onboarding

Mid-Senior level

Contract

Engineering and Information Technology

Industries:
Technology, Information and Internet

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