Infrastructure Engineer

Flex

9d•Remote

About The Position

We're looking for an Infrastructure Engineer to design and own the cloud infrastructure, databases, and core systems that every other engineer at Flex builds on. You'll work closely with backend, frontend, and other stakeholders to keep the systems that move real money fast, reliable, and resilient. This is a role for someone who thrives in ambiguity, takes initiative, and is excited about building at an early-stage company.

Requirements

5+ years of experience building and operating production infrastructure at scale
Hands-on experience with AWS, database operations and tuning (Postgres or similar), and infrastructure as code (Terraform or similar)
Resourceful, curious, and comfortable learning new tools quickly
Thrive in fast-paced, dynamic environments and enjoy wearing multiple hats
Collaborative and enjoy working across teams to solve problems
Execution mindset and always keep the end user in mind
Proficient at leveraging AI tools to ship faster

Nice To Haves

Experience operating Rust services in production
Background in payments, fintech, or health benefits (HSA/FSA), or another regulated, money-moving domain

Responsibilities

Design, build, and operate the cloud infrastructure, databases, and core systems that engineering teams build on
Partner with backend, frontend, and other stakeholders to translate their needs into reliable platform capabilities
Own and improve our cloud infrastructure, databases, and observability stack
Analyze, troubleshoot, and resolve production issues rooted in infrastructure, scaling, and reliability
Collaborate on cross-functional projects that connect the full Flex experience, from consumer checkout to merchant analytics
Create and maintain documentation for infrastructure, platform services, and on-call runbooks
Contribute to a culture of learning, problem-solving, and operational excellence