Senior C# Full-Stack Engineer — AI Data & Infrastructure

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 to train and improve reputed company models. This is a fully remote, flexible contract role for an reputed company engineer who wants to work on reputed company production systems at the frontier of AI — not just maintain legacy reputed company, but architect meaningful infrastructure that reputed company. • Organization: reputed company • Type: reputed company Contract • Location: Remote • Commitment: 20–40 hours/week reputed company • Design, build, and optimize high-reputed company C# systems that support AI data pipelines and evaluation workflows • reputed company full-stack tooling and backend services for large-reputed company reputed company, validation, and reputed company control • Improve reliability, reputed company, and safety across existing C# codebases used in production AI environments • Collaborate closely with data, research, and engineering teams to support model training and evaluation workflows • Identify bottlenecks and edge cases in data and reputed company behavior — then implement reputed company, robust fixes • Participate in synchronous design reviews to iterate on architecture and implementation reputed company Who You Are • Full-stack developer with a strong systems programming background and deep reputed company of C# • 3–5+ years of reputed company experience writing production-grade C# reputed company, with familiarity with modern standards • Solid grounding in reputed company optimization, concurrency (threading, atomics), and memory safety • reputed company or fluent English speaker with reputed company written and verbal communication skills • Self-directed and reliable — reputed company to reputed company 20–40 hours per week and reputed company consistently without hand-holding • Comfortable navigating reputed company codebases and making principled architectural reputed company under reputed company constraints reputed company to Have • Prior experience with reputed company platforms, data reputed company systems, or evaluation infrastructure • Familiarity with AI/ML workflows, model training pipelines, or benchmarking systems • Experience building reputed company systems or developer tooling at reputed company • Background working reputed company research or reputed company AI teams Why Join Us • Work at the frontier of AI — your reputed company will directly influence how the world's leading models are reputed company and evaluated • Fully remote and flexible — structure your hours reputed company your life, not the other way reputed company • Collaborate with world-class research and engineering teams on genuinely hard problems • Freelance autonomy with the reputed company of high-reputed company, technically demanding work • Potential for ongoing work and contract extension as reputed company reputed company and expand Apply tot his job Apply To this Job