Backend Developer Data Annotation Systems

Software Development

vmysmartpros

1 open role Website

We’re looking for a senior Python full‑stack engineer to power AI data pipelines and large‑scale annotation systems. This contract role is fully remote and offers competitive hourly pay.

What You’ll Do

  • Design and optimize high‑performance Python systems for AI data pipelines.
  • Build full‑stack tools and backend services for large‑scale annotation and quality control.
  • Enhance reliability, performance, and safety of existing Python codebases.
  • Collaborate with data, research, and engineering teams on model training workflows.
  • Identify bottlenecks and edge cases, delivering scalable fixes.
  • Participate in synchronous code reviews to iterate on system design.

What You Need

  • 3‑5+ years of professional production Python development.
  • Full‑stack development experience with a strong systems‑programming background.
  • Experience building asynchronous task queues for long‑running background jobs.
  • Proficiency optimizing high read/write database queries and serving data via WebSockets.
  • Native or fluent English communication, both written and verbal.
  • Ability to commit 2040 hours per week.

Good to Have

  • Experience with data annotation, data quality, or evaluation systems.
  • Familiarity with AI/ML model training and benchmarking pipelines.
  • Background in distributed systems or developer tooling.

The Opportunity

This contract role offers flexible remote work and competitive hourly compensation based on experience. Join Alignerr’s team that partners with top AI labs on production‑grade systems and high‑impact research workflows.

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