Backend Developer - AI Data Services
About this role
About the Role What if your C expertise could directly shape the infrastructure powering the world's most advanced AI systems? We're looking for a Senior C Full-Stack Engineer to build and optimize the data pipelines, annotation tooling, and evaluation systems that leading AI labs depend on every day. This is a fully remote contract role working on real production systems — not toy projects. You'll collaborate with data, research, and engineering teams at the frontier of AI development, solving hard infrastructure problems that matter. - Organization: Alignerr - Type: Hourly Contract - Location: Remote - Commitment: 20–40 hours/week What You'll Do - Design, build, and optimize high-performance C 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 C 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 design reviews to iterate on architecture and implementation decisions Who You Are - Native or fluent English speaker with clear written and verbal communication skills - Full-stack developer with a strong systems programming background - 5+ years of professional experience writing production-grade C - Strong skills in data modeling and database access using ORM frameworks or micro-ORMs for high-performance SQL interactions - Experienced building secure, well-documented endpoints for data access and manipulation - Able to commit 20–40 hours per week with consistency and reliability 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 directly with leading AI research labs on systems that power next-generation models - Fully remote and flexible — work from anywhere on a schedule that suits you - Freelance autonomy with the structure and consistency of meaningful, ongoing project work - Make a tangible impact on how AI systems are built, evaluated, and improved at scale - Potential for ongoing work and contract extension as new projects launch
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