Lead Rust Engineer: AI Infra Performance & Scale

UMATR; San Francisco (CA); On-site; USD 210,000 - 270,000; Full time

Job summary

UMATR is seeking a Principal Rust Engineer in San Francisco to own a major architecture transformation for a high-volume AI infrastructure platform. You’ll drive performance, reliability and maintainability while guiding a phased rollout and coordinating with backend and infra teams.

You will lead the introduction of Rust in a production codebase, optimize latency and throughput, and balance engineering velocity with stability at production scale.

Qualifications

• Deep, production-level Rust experience with several years of hands-on development.
• Strong understanding of latency, throughput and resource efficiency.
• Experience building and operating high-volume production backend or infrastructure systems.
• Strong systems thinking and the ability to make pragmatic trade-offs between performance, reliability and complexity.
• Experience owning technically complex projects from architecture through to production.
• Comfortable working with backend infrastructure and databases such as PostgreSQL and Redis.

Responsibilities

• Own a major architectural transformation across a high-volume AI infrastructure platform.
• Work directly with senior technical leadership to define the architecture and implementation strategy.
• Restructure existing systems to support long-term performance and engineering velocity.
• Lead the gradual introduction of Rust into a mature production codebase.
• Identify and remove bottlenecks across latency, throughput and resource utilisation.
• Design systems capable of handling significant production traffic while maintaining reliability.
• Develop a phased rollout strategy that minimises risk to existing customers and workloads.
• Make key architectural decisions around performance, scalability, reliability and maintainability.
• Work closely with backend and infrastructure engineers to ensure changes align with wider platform priorities.
• Measure the impact of architectural changes through meaningful production performance metrics.

Skills

Rust

Performance engineering

Backend systems

PostgreSQL

Redis

Distributed systems

Job description

UMATR is seeking a Principal Rust Engineer in San Francisco to own a major architecture transformation for a high-volume AI infrastructure platform. You’ll drive performance, reliability and maintainability while guiding a phased rollout and coordinating with backend and infra teams.

You will lead the introduction of Rust in a production codebase, optimize latency and throughput, and balance engineering velocity with stability at production scale.