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

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 Have: Experience operating Rust services in production and background in payments, fintech, or health benefits (HSA/FSA), or another regulated, money-moving domain.

Infrastructure Engineer

Key skills