Senior Rust Engineer — AI Data & Infrastructure

About The Role What if your systems programming expertise could directly shape the infrastructure behind some of the world's most advanced AI models? We're looking for a Senior Rust Engineer to build and optimize the high-performance data pipelines, annotation tooling, and evaluation systems that leading AI labs depend on to train and improve next-generation models. This is a fully remote contract role with serious technical depth. You'll be working on real production systems — not toy projects — alongside research and engineering teams at the frontier of AI development. • Organization: Alignerr • Type: Hourly Contract • Location: Remote • Commitment: 20–40 hours/week What You'll Do • Design, build, and optimize high-performance systems in Rust that power AI data pipelines and evaluation workflows • Develop backend services and tooling for large-scale data annotation, validation, and quality control • Improve reliability, performance, and memory safety across existing Rust 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 — then implement scalable, production-ready fixes • Participate in synchronous design reviews to iterate on architecture and implementation decisions Who You Are • 5+ years of professional experience writing production-grade Rust • Strong systems programming foundation — you think carefully about performance, concurrency, and memory safety • Proven experience building backend services, developer tooling, or data pipelines • Clear, direct communicator — written and verbal — comfortable working across technical and research teams • Able to commit 20–40 hours per week with consistency and reliability Nice to Have • Prior experience with data annotation systems, data quality pipelines, or model evaluation infrastructure • Familiarity with AI/ML workflows, model training, or benchmarking pipelines • Experience with distributed systems design or developer tooling at scale • Exposure to Go, Python, or C++ in a systems context Why Join Us • Work directly with leading AI labs on real, production-grade infrastructure that matters • Fully remote — work from anywhere, on a schedule that fits your life • Freelance autonomy with the structure and focus of high-impact, technically challenging work • Contribute to systems that shape how the world's most advanced AI models are built and evaluated • Potential for ongoing engagement and expanded scope as projects grow