Withflex Inc. logo

Infrastructure Engineer

Job Overview

Location

United States

Job Type

Full-time

Category

DevOps & SysAdmin

Date Posted

May 3, 2026

Full Job Description

đź“‹ Description

  • • Infrastructure Engineer role focused on designing and owning the cloud infrastructure, databases, and core systems that enable all engineering teams at Flex to build and ship products reliably and at scale.
  • • Day-to-day responsibilities include designing, building, and operating AWS-based infrastructure, managing and tuning Postgres databases, implementing infrastructure as code with Terraform, collaborating with backend and frontend teams to translate needs into platform capabilities, troubleshooting production issues related to scaling and reliability, maintaining documentation and on-call runbooks, and contributing to a culture of operational excellence and learning.
  • • Flex is an early-stage fintech company solving the problem of HSA/FSA payment processing for health and wellness brands, enabling real-time eligibility verification, split payments, and Letters of Medical Necessity at checkout, backed by prominent investors and serving clients like Equinox, Dermstore, and Therabody.
  • • The role offers the opportunity to make a significant impact at a growing startup, work on mission-critical financial infrastructure, develop deep expertise in cloud and database systems, collaborate across functions, and grow technically and professionally in a high-trust, transparent environment.

🎯 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
  • • Thrives in fast-paced, dynamic environments and enjoys wearing multiple hats
  • • Collaborative and enjoys working across teams to solve problems
  • • Execution-minded with a focus on the end user
  • • Proficient at leveraging AI tools to ship faster

🏖️ Benefits

  • • Mission-driven team making healthcare spending effortless
  • • Early-stage impact - work directly shapes company growth and success
  • • Collaborative, high-trust, and transparent culture
  • • Competitive compensation and equity package
  • • Flexible, remote-friendly work environment

Skills & Technologies

Rust
PostgreSQL
AWS
Terraform
DevOps
Remote

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Withflex Inc. logo
Withflex Inc.
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About Withflex Inc.

Withflex is a technology company focused on revolutionizing the way businesses manage their flexible workforce. Their platform provides a comprehensive solution for hiring, onboarding, managing, and paying contingent workers, freelancers, and contractors. By centralizing these processes, Withflex aims to streamline operations, ensure compliance, and reduce administrative overhead for companies. They cater to businesses of all sizes looking to leverage flexible talent efficiently and effectively, offering tools for talent sourcing, contract management, time tracking, and automated payments. Withflex operates within the HR tech and gig economy enablement sectors.

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