Infrastructure Engineer

Role overview

A senior infrastructure engineering role serving as the first dedicated infrastructure hire on a Core Platform team at a US-based expense-splitting platform used by tens of millions of people globally. The platform currently runs on Ruby on Rails monoliths and the role focuses on architecting and launching pragmatic, developer-friendly, cost-effective systems. It is a hands-on position with significant authority over architecture, priorities, and roadmap, and includes mentoring other engineers.

Responsibilities

- Make architectural decisions that balance rapid feature development with cost proportional to growth - Define and own SLOs and SLIs for core services - Plan capacity using data-driven recommendations on when to scale or re-architect - Build and maintain infrastructure as code with Terraform across an AWS footprint and supporting services such as Cloudflare - Develop in-house tooling in Rust to improve the developer experience - Own CI/CD and deployment workflows - Collaborate with engineers to improve dependency and vulnerability management - Help engineers adopt healthy observability patterns - Evaluate and select vendors and services for infrastructure needs

Requirements

- 6-10 years of experience as an infrastructure engineer, platform engineer, or SRE in cloud-native AWS environments - Hands-on experience writing code that lets developers manage AWS resources - Strong Terraform skills - Proficiency in Ruby, Python, or a comparable language - Experience operating relational databases at scale - Sound judgment on security and reliability tradeoffs - A 4-year Bachelor's degree in Computer Science, Software Engineering, or related field, or equivalent professional experience

Nice to have

- Experience working with Ruby on Rails monoliths - Deep relational database expertise

Benefits and work setup

- Remote-friendly US company with a small headquarters in Providence, RI and existing coworker hubs in New York and LA; fully remote candidates in the USA are supported - In-person team gatherings 2-3 times per year - Base cash compensation range of $197,000-$220,000/yr depending on experience and tenure - Equity or stock options - Health care covered at 100% for the employee and 50% for dependents, plus dental and vision insurance - Flexible or unlimited PTO, with most teammates taking 4-6 weeks - 12+ weeks of paid parental leave - 401(k) with employer match - Flexible hours, with meeting times generally between 10am-5pm ET - Professional development budget for conferences or paid resources - Periodic annual retreats and in-person colleague visits - Stipends or support for remote, co-working, or in-office setups