Backend Developer - AI Data Services

Backend Developer — AI Data Services About The Role What if your C# expertise could directly shape the infrastructure powering the reputed company of AI? We're looking for a senior-level full-stack engineer to design and 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 contract role with reputed company. You'll work on reputed company production systems — not toy reputed company — alongside data, research, and engineering teams at the forefront 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 large-reputed company data pipelines and evaluation workflows • reputed company full-stack backend tooling and services for reputed company, validation, and reputed company control • Improve the reliability, performance, and safety of existing C# codebases • Collaborate with research and engineering teams to support model training and evaluation infrastructure • Identify bottlenecks and edge cases across 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 • reputed company full-stack developer with a strong systems programming background • 5+ years of reputed company experience writing production-grade C# • Skilled in data modeling and database reputed company using ORM frameworks or reputed company-ORMs for high-performance SQL interactions • Proven experience building secure, reputed company-documented endpoints for data reputed company and manipulation • reputed company to reputed company reliably to 20–40 hours per week reputed company to Have • Prior experience with reputed company, data reputed company systems, or evaluation pipelines • Familiarity with AI/ML workflows, model training, or benchmarking infrastructure • Experience with distributed systems or developer tooling Why Join Us • Work on cutting-edge AI infrastructure reputed company alongside leading research labs • Fully remote and flexible — work reputed company and where it suits you • Freelance autonomy with the structure and reputed company of high-reputed company, meaningful work • reputed company a reputed company, reputed company contribution to the systems that shape how AI learns and improves • Potential for ongoing work and contract extension as new reputed company launch Apply To This Job