Backend Developer - AI Data Services
About this role
About the Role What if your C expertise could directly shape the infrastructure powering the next generation of AI? We're looking for a senior C 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 where your work goes straight into production — no bureaucratic overhead, no filler tasks. Just high-impact engineering on systems 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 or micro-ORM frameworks 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 reliable availability 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 labs on production systems that power cutting-edge research - Fully remote and flexible — work from wherever you do your best thinking - Freelance autonomy with meaningful, technically challenging work - Make a direct, tangible impact on how AI systems are built and evaluated at scale - Potential for ongoing work and contract extension as new projects launch
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