About this role · Coding
About the Role What if your deep knowledge of Rust could directly shape the infrastructure powering the world's most advanced AI models? We're looking for a Senior Rust Engineer to build and optimize the high-performance distributed systems, data pipelines, and evaluation tooling that leading AI labs depend on every day. This is a fully remote contract role with flexible hours. If you thrive on hard systems problems — concurrency, distributed state, performance at scale — this is the work you've been waiting for. - Organization: Alignerr - Type: Hourly Contract - Location: Remote - Commitment: 20–40 hours/week What You'll Do - Design, build, and optimize production-grade Rust systems supporting large-scale AI data pipelines and model evaluation workflows - Develop full-stack backend services and tooling for data annotation, validation, and quality control - Improve reliability, performance, and safety across existing Rust codebases - Debug complex concurrency issues — deadlocks, race conditions, and async edge cases — using instrumentation and tracing tools - Collaborate with data, research, and engineering teams to support model training and evaluation infrastructure - Identify bottlenecks and implement scalable, robust fixes - Participate in synchronous design reviews to iterate on system architecture and implementation decisions Who You Are - 3–5+ years of professional experience writing production Rust - Strong background in distributed systems — RPC frameworks, distributed state, consensus mechanisms - Experienced at debugging complex concurrency issues using async instrumentation and tracing tools - Native or fluent English speaker with clear written and verbal communication skills - Able to commit 20–40 hours per week with reliable availability - Self-directed and comfortable working asynchronously in a remote environment Nice to Have - Prior experience with data annotation, data quality, or evaluation systems - Familiarity with AI/ML workflows, model training pipelines, or benchmarking infrastructure - Background in developer tooling or systems-level software - Experience contributing to or maintaining open-source Rust projects Why Join Us - Work directly with leading AI research labs on real production systems — not toy projects - Fully remote and flexible — structure your week around the work, not the other way around - Freelance autonomy with the depth and impact of meaningful engineering work - Tackle some of the hardest distributed systems challenges in the AI space - Potential for ongoing work and contract extension as projects scale and evolve