Senior Systems Engineer — AI Data & Infrastructure

Senior Systems Engineer — AI Data & Infrastructure About the Role What if your systems engineering expertise could directly shape the infrastructure that powers the world's most advanced AI models? We're looking for a Senior Systems Engineer to build the data pipelines, annotation tooling, and evaluation systems that leading AI labs depend on — working on real production systems with genuine, measurable impact. This is a fully remote, flexible contract role for experienced engineers who thrive at the intersection of performance, reliability, and scale. If you've spent years making systems faster, smarter, and more resilient — this is where that expertise matters most. Organization : Alignerr Type : Hourly Contract Location : Remote Commitment : 20–40 hours/week What You'll Do Design, build, and optimize high-performance systems in Go, Rust, Python, or C++ Develop backend services and tooling for large-scale data annotation, validation, and evaluation workflows Build and maintain reliable data pipelines supporting AI model training and benchmarking Identify and resolve bottlenecks, edge cases, and failure modes across data and system layers Improve performance, scalability, and correctness across existing production codebases Collaborate directly with data, research, and engineering teams on model-facing infrastructure Participate in architecture reviews and iterate on system design decisions with senior peers Who You Are 5+ years of professional experience with Go, Rust, Python, or C++ Strong background in systems or backend engineering — you think in terms of performance, reliability, and correctness Proven experience shipping production services, developer tooling, or data pipelines at scale Able to reason clearly about failure modes, trade-offs, and system behavior under load Clear, precise communicator — in code, in writing, and in technical discussion Available to commit 20–40 hours per week on a contractor basis Nice to Have Experience with data annotation sys