OpenRecently verified

Backend Developer - Data Annotation Systems

  • Software Engineering
  • Platform: Alignerr
  • Level: Intermediate

$50-75/hrAs published by the platform.

About this job

This role involves designing and optimizing Python-based backend systems for data annotation, validation, and AI model training infrastructure. The position requires a senior full-stack engineer to build high-performance data pipelines, asynchronous task queues, and evaluation systems used by leading AI labs.

What you'll do

  • Design and optimize high-performance Python systems supporting large-scale AI data pipelines and evaluation workflows
  • Develop full-stack backend tooling for data annotation, validation, and quality control at scale
  • Build and maintain asynchronous task queues to handle long-running background jobs reliably
  • Optimize database queries for high-read/write workloads and serve data via real-time protocols such as WebSockets

Requirements

Python
  • 3+ years of experience

Pay

$50-75/hr

Pay as published by the platform. It is not a guarantee of income or hours.

Location

The platform has not published which countries are eligible for this job.

How to apply

You apply on Alignerr, Labelbox's expert network: create a profile, complete an AI-led interview and skills assessment, then get matched to projects in your field.

All Alignerr jobs and how the platform works

Source

Official posting: https://www.alignerr.com/jobs/20b9e86e-f3f8-4078-a8d8-b0283f4bdebe

Last checked on October 8, 2026.

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