Flex

Software Engineer

Flex

full-time

Posted on:

Location Type: Remote

Location: Remote • 🇺🇸 United States

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Salary

💰 $160,000 - $220,000 per year

Job Level

Mid-LevelSenior

Tech Stack

AWSJavaScriptNext.jsPostgresReactRedisRustTypeScript

About the role

  • Contribute to building the highest-converting HSA/FSA checkout experience.
  • Build simple, elegant APIs that make Flex easy to integrate.
  • Design and develop scalable solutions for HSA/FSA payment infrastructure.
  • Interact directly with customers to help define the roadmap.
  • Work with technologies including Next.js, Rust, TypeScript, Postgres, Redis, and AWS.

Requirements

  • 3+ years of engineering experience at tech and product-driven companies
  • Proficient in TypeScript, React, and modern web technologies
  • Skilled in at least one backend language (we use Rust)
  • Hands-on experience deploying to AWS infrastructure
  • Comfortable in dynamic, fast-paced startup environments
  • Prior startup experience (seed–Series B) strongly preferred
Benefits
  • Equity compensation with competitive salary
  • Medical, dental, and vision plans
  • Unlimited PTO and sick days
  • Paid parental leave
  • Flexible, remote-first team with quarterly in-person meetups

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
TypeScriptRustReactNext.jsPostgresRedisAWSAPI developmentscalable solutionspayment infrastructure
Soft skills
customer interactionroadmap definitionadaptabilityteam collaborationproblem-solvingcommunicationinitiativetime managementflexibilitycreativity
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