SF Platform Engineer — AI Infra, Scale & Reliability

Harper; San Francisco (CA); On-site; USD 140,000 - 280,000; Full time

Benefits offered by this job

Uber commuter benefits

Meals provided (breakfast, lunch, and/

Snacks, drinks and coffee daily

Free gym membership

Health, dental and vision insurance

Job summary

Harper seeks an infrastructure-focused engineer in San Francisco to own and scale core infrastructure across databases, AWS, and networking. You’ll design observability, CI/CD and AI tooling that enable thousands of concurrent operations while maintaining reliability and developer velocity.

You’ll work with founders and product teams to preempt incidents, design robust fixes, and ship solutions before fires occur. Remote relocation is considered for the right candidate.

Qualifications

• Software engineering with a platform, infrastructure or SRE focus.
• Proficiency in Python, TypeScript, Go or similar.
• Production experience with AWS, databases (Postgres) and observability tooling.
• Track record of building reusable systems and tooling for engineers.
• Based in San Francisco or willing to relocate.

Responsibilities

• Own core infrastructure—Databases, AWS services, networking, CI/CD.
• Build for scale: thousands of concurrent AI ops, sub-second times.
• Design observability that detects system and business silent failures.
• Orchestrate agentic workloads as concurrency grows.
• Multiply developer velocity with usable tooling for engineers.
• Own reliability end-to-end: SLOs, on-call, post-mortems.
• Build eval infra to measure AI output improvements.

Skills

Python

TypeScript

Go

AWS

PostgreSQL

Observability

Job description

Harper seeks an infrastructure-focused engineer in San Francisco to own and scale core infrastructure across databases, AWS, and networking. You’ll design observability, CI/CD and AI tooling that enable thousands of concurrent operations while maintaining reliability and developer velocity.

You’ll work with founders and product teams to preempt incidents, design robust fixes, and ship solutions before fires occur. Remote relocation is considered for the right candidate.