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-impact 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: Hourly Contract Location: Remote Commitment: 2040 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-scale reputed company, validation, and quality 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 professional experience writing production-grade C# Experienced 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 2040 hours per week consistently reputed company to Have Prior experience with reputed company, data quality pipelines, or evaluation systems Familiarity with AI/ML workflows, model training, or benchmarking infrastructure Experience with distributed systems or developer tooling at scale 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 projects reputed company and new workstreams launch Apply tot his job Apply To this Job 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-impact 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: Hourly Contract Location: Remote Commitment: 2040 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-scale reputed company, validation, and quality 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 professional experience writing production-grade C# Experienced 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 2040 hours per week consistently reputed company to Have Prior experience with reputed company, data quality pipelines, or evaluation systems Familiarity with AI/ML workflows, model training, or benchmarking infrastructure Experience with distributed systems or developer tooling at scale Why Join Us Work on reputed company production systems alongside researchers and engineers at leading AI labs Fully remote and async-friendly work