Senior Backend Engineer: AI Tooling & Data Pipelines, Remote

Alignerr Corp.; Seattle (WA); Remote; USD 96,000 - 165,000; Part time

Benefits offered by this job

Fully remote

Flexible hours

Job summary

Alignerr is seeking a senior backend engineer to shape AI tooling and data pipelines. This fully remote hourly contract role focuses on building Python-based data pipelines, annotation tooling, and evaluation systems used by leading AI labs.

You will design APIs, optimize performance, and collaborate with cross-functional teams to enable model training and evaluation workflows. The position requires 5+ years of production Python experience, API design expertise, and the ability to work

Qualifications

• 5+ years of production Python backend experience.
• APIs design and secure auth systems experience.
• Ability to work remotely on a 20–40 hours/week contract.

Responsibilities

• Design, build, and optimize Python systems for data pipelines and evaluation workflows.
• Develop backend services and tooling for data annotation, validation, and quality control.
• Architect robust APIs, databases, and authentication/authorization flows.
• Improve reliability, performance, and safety of Python codebases.
• Collaborate with data, research, and engineering teams to support model training and evaluation workflows.
• Identify bottlenecks and implement production-ready fixes.
• Lead code reviews and system design sessions.

Skills

Python backend

API design

REST/GraphQL

Distributed systems

Code reviews

Autonomy

Job description

Alignerr is seeking a senior backend engineer to shape AI tooling and data pipelines. This fully remote hourly contract role focuses on building Python-based data pipelines, annotation tooling, and evaluation systems used by leading AI labs.

You will design APIs, optimize performance, and collaborate with cross-functional teams to enable model training and evaluation workflows. The position requires 5+ years of production Python experience, API design expertise, and the ability to work