Principal Python Engineer - ML InfrastructureAlignerr • Los Angeles, CA, United States
[error_messages.no_longer_accepting]
Principal Python Engineer - ML Infrastructure
Alignerr • Los Angeles, CA, United States
[job_card.variable_days_ago]
[job_preview.job_type]
- [job_card.full_time]
[job_card.job_description]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
About the Job
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.
Position
Senior Python Full-Stack Engineer - AI Data & Infrastructure
Type : Contract, Remote Commitment : 20-40 hours / week Compensation : Competitive, hourly (based on experience)
Role 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
Qualifications
Must-Have
Preferred
Application Process
$50 - $75 an hour
[job_alerts.create_a_job]
Principal Ml Engineer • Los Angeles, CA, United States
[internal_linking.similar_jobs]
Job Title : Manager, Infrastructure & Cloud Engineering.Director of Technology Operations & Information Security Officer.
Department : Technology Operations.The Manager, Infrastructure & Cloud Enginee...[show_more]
A company is looking for a Principal Engineer - Pulumi Neo.Key Responsibilities Build planning and execution systems for multi-step infrastructure operations across various cloud platforms Desig...[show_more]
A leading auction marketplace in California is seeking a Senior Software Engineer to design and deploy scalable backend solutions and machine learning models.
The role involves collaborating with da...[show_more]
The Aerospace Corporation is the trusted partner to the nation's space programs, solving the hardest problems and providing unmatched technical expertise.
As the operator of a federally funded resea...[show_more]
The Data Engineer will design, build, and maintain scalable data infrastructure and integrations to support enterprise analytics and operational systems.
This role focuses on enabling seamless data ...[show_more]
Northwood is on a mission to transform connectivity between earth and space and bring the benefits of space to the masses through innovations in space communications technologies.If you are energiz...[show_more]
A prominent entertainment firm is seeking a Lead Software Engineer to develop AI / ML frameworks and contribute to innovative tooling across products.
This role involves mentorship of junior developer...[show_more]
What success looks like in this role : .We are seeking a highly skilled Senior Azure Cloud Engineer with proven expertise in designing and deploying multitenant Microsoft Sentinel environments.The id...[show_more]
SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not.
Today SpaceX is actively developing the technolo...[show_more]
At Boeing, we innovate and collaborate to make the world a better place.We're committed to fostering an environment for every teammate that's welcoming, respectful and inclusive, with great opportu...[show_more]
Hadrian — Manufacturing the Future.Hadrian is building autonomous factories that help aerospace and defense companies manufacture rockets, satellites, jets, and ships up to 10x faster and up to 2x ...[show_more]
Senior Fullstack Engineer : Agentic Infrastructure Team.Internet Brands is looking for a Senior Fullstack Engineer to join our Agentic AI team.
You'll help build our AI capabilities from the ground u...[show_more]
As humans, there are few things more exciting than meeting someone new.At Tinder, we’re inspired by the challenge of keeping the magic of human connection alive.
With tens of millions of users, hund...[show_more] SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not.
Today SpaceX is actively developing the technolo...[show_more] 
A leading global marketplace provider is looking for a Senior Software Engineer to build, deploy, and maintain backend solutions.
The role involves deploying machine learning models and developing A...[show_more]
TekWissen is a global workforce management provider headquartered in Ann Arbor, Michigan that offers strategic talent solutions to our clients world-wide.
Our client is an American multinational inf...[show_more] Northwood is on a mission to transform connectivity between earth and space and bring the benefits of space to the masses through innovations in space communications technologies.If you like buildi...[show_more] 
We are looking for a leader who will be responsible for overseeing the day-to-day management and maintenance of our organization's data centers.
Coordinates data center hardware installation, reconf...[show_more]
Infrastructure & Cloud Engineering Manager
WPS • Torrance, CA, United States
[job_card.full_time]
[last_updated.last_updated_variable_hours] • [promoted] • [new]
Principal Engineer
VirtualVocations • Van Nuys, California, United States
[job_card.full_time]
[last_updated.last_updated_variable_hours] • [promoted] • [new]
Senior Platform Engineer : Python, ML & AI Pipelines
Ritchie Bros. • Beverly Hills, CA, United States
[job_card.full_time]
[last_updated.last_updated_variable_days] • [promoted]
Cloud Engineer
The Aerospace Corporation • El Segundo, CA, United States
[job_card.full_time]
[last_updated.last_updated_30] • [promoted]
Data Engineer
Customs Goods • Carson, California, United States
[job_card.full_time]
[last_updated.last_updated_variable_days] • [promoted]
Staff Software Engineer - Cloud Platform
Northwoodspace • Los Angeles, California, United States
[job_card.full_time] +1
[last_updated.last_updated_variable_days] • [promoted]
Lead AI Infrastructure & Tooling Engineer
The Walt Disney Company • Santa Monica, CA, United States
[job_card.full_time]
[last_updated.last_updated_30] • [promoted]
Senior Azure Cloud Engineer
Unisys Corporation • Long Beach, CA, United States
[job_card.full_time]
[last_updated.last_updated_30] • [promoted]
Facilities Infrastructure Engineer (Reliability)
Spacex • Hawthorne, California, United States
[job_card.full_time] +1
[last_updated.last_updated_30] • [promoted]
Principal Systems Engineer
Boeing • El Segundo, California, United States
[job_card.permanent]
[last_updated.last_updated_variable_hours] • [promoted] • [new]
Infrastructure Engineer
Hadrian Automation • Los Angeles, California, United States
[job_card.full_time] +1
[last_updated.last_updated_30] • [promoted]
Senior Fullstack Engineer Agentic Infrastructure Job ID 2025-9881
Internet Brands • El Segundo, California, United States
[job_card.full_time]
[last_updated.last_updated_variable_days] • [promoted]
Cloud Infrastructure Engineer Intern
Match Group • Los Angeles, California, United States
[job_card.internship]
[last_updated.last_updated_30] • [promoted]
Facilities Infrastructure Engineer
Spacex • Hawthorne, California, United States
[job_card.full_time] +1
[last_updated.last_updated_variable_days] • [promoted]
Senior Python / ML Platform Engineer
RB Global Inc. • Beverly Hills, CA, United States
[job_card.full_time]
[last_updated.last_updated_variable_days] • [promoted]
Developer AWS, Python
Merican • Santa Monica, CA, United States
[job_card.temporary]
[last_updated.last_updated_variable_days] • [promoted]
Infrastructure Engineer
Northwoodspace • Los Angeles, California, United States
[job_card.full_time] +1
[last_updated.last_updated_30] • [promoted]
Data Center Infrastructure Engineer
Quadranet Enterprises • Los Angeles, California, United States
[job_card.full_time]
[last_updated.last_updated_30] • [promoted]