AlignerrPython Software Engineer — AI Workflows About The Role What if your Python expertise could directly shape the infrastructure behind next-generation AI? We're looking for a senior full-stack Python engineer to build the data pipelines, annotation tooling, and evaluation systems that leading AI labs depend on to train and improve their models. This is a fully remote, flexible contract role for an experienced engineer who wants to work on real production systems at the cutting edge of AI — not toy projects, but high-impact infrastructure that influences how the world's most advanced models are built.
Commitment: 20–40 hours/week What You'll Do Design, build, and optimize high-performance Python systems 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, then implement scalable fixes
Participate in synchronous design reviews to iterate on architecture and implementation decisions Who You Are 3–5+ years of professional experience writing production-grade Python
Strong full-stack developer with a solid systems programming background
You write clean, maintainable code — linters, formatters, and testing frameworks are second nature
Experienced in integrating AI services and APIs, handling edge cases, and building robust error reporting A clear communicator — both in writing and in synchronous discussions
Native or fluent English speaker
Available to commit 20–40 hours per week Nice to Have 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 Why Join Us Work on cutting-edge AI infrastructure alongside leading research labs
Fully remote and flexible — work when and where it suits you
Freelance autonomy with the structure of meaningful, high-impact engineering work
Tackle real production challenges that directly shape how next-generation AI models are built
Potential for ongoing work and contract extension as new projects launch
Interested in this role?