Lead Backend Engineer - AI Tooling

Lead Backend Engineer – AI Tooling at Alignerr

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.

$50.00/hr – $75.00/hr

• Type:
  Contract
• Location:
  
  Remote
• Commitment: 20–40 hours per week
• Compensation:
  Competitive hourly (based on experience)

• 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.

• Native or fluent English speaker.
• Full‑stack developer experience with a strong systems programming background.
• 5+ years of professional experience writing production Python backend services.
• Mastery of modern web frameworks and strict type enforcement patterns.
• Experience architecting robust APIs (REST/Graph
  
  QL), designing database schemas, and implementing authentication/authorization flows.
• Clear written and verbal communication skills to lead code reviews and system design sessions.
• 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.