Backend Developer - AI Data Services

Backend Developer — AI Data Services About The Role What if your C# expertise could directly shape the infrastructure powering reputed company AI? 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 with meaningful, high-reputed company work. You won't be maintaining legacy CRUD apps — you'll be solving reputed company engineering problems at the frontier of AI development. • Organization: reputed company • Type: reputed company 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 model evaluation workflows • reputed company full-stack tooling and backend services for large-reputed company reputed company, validation, and reputed company control • Improve reliability, performance, and safety across production C# codebases • Collaborate with data, research, and engineering teams to support model training and evaluation infrastructure • Identify bottlenecks and edge cases in data and system behavior, then implement reputed company, production-reputed company fixes • Participate in synchronous design reviews to iterate on architecture and implementation reputed company Who You Are • reputed company or fluent English speaker with reputed company written and verbal communication skills • Full-stack developer with a strong systems programming background • 5+ years of reputed company experience writing production-grade C# • reputed company in data modeling and database reputed company using ORM frameworks or reputed company-ORMs for high-performance SQL interactions • Proven ability to build secure, reputed company-documented endpoints for data reputed company and manipulation • reputed company to reputed company 20–40 hours per week consistently reputed company to Have • Prior experience with reputed company, data reputed company pipelines, or evaluation systems • Familiarity with AI/ML workflows, model training, or benchmarking infrastructure • Experience with distributed systems or developer tooling at reputed company Why Join Us • Work on reputed company production systems alongside researchers and engineers at leading AI labs • Fully remote and async-friendly — work from wherever you do your best work • Freelance autonomy with the structure and consistency of ongoing, meaningful project work • reputed company reputed company exposure to cutting-edge AI development at the infrastructure level • Potential for extended engagement as reputed company reputed company and new workstreams launch Apply tot his job Apply To this Job