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Senior Python Full-Stack Engineer

3 weeks ago

Los Angeles, CA, United States Alignerr Full time
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

- Native or fluent English speaker

- Full-stack developer experience with a strong systems programming background

- 5+ years of professional experience writing production Python

- Strong background in performance optimization and concurrency (e.g., asyncio, multiprocessing, threading) and type safety (e.g., Pydantic, mypy)

- Experience building robust backend services (using frameworks like FastAPI or Django) or scalable data pipelines

- Clear written and verbal communication skills

- 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

Application Process

- Submit your resume

- Complete a short technical screening

- Project matching and onboarding

$50 - $75 an hour