Flex (YC S23) logo

Senior Software Engineer - AWS & Back-End Development

Flex (YC S23)

About Flex

Flex is a payment platform for businesses to accept HSA/FSA cards, offering a prebuilt, hosted checkout page or UI building blocks to integrate HSA/FSA payments directly into existing flows. As an early-stage startup backed by Y-Combinator and other notable investors, Flex is on a mission to unlock the $120B sitting in HSA/FSA accounts.

Role Overview

We are seeking a Senior Software Engineer to join our founding team and drive the future of HSA/FSA Payments. This role is ideal for someone who thrives in dynamic environments and is passionate about building innovative solutions.

Key Responsibilities

  • Contribute to building the highest converting HSA/FSA checkout experience.
  • Develop simple and elegant APIs for seamless integration with Flex.
  • Design and develop scalable solutions for HSA/FSA payment infrastructure.
  • Lead technical efforts on in-house Telehealth as a service.
  • Interact directly with customers to help define the future roadmap.
  • Work with technologies such as NextJS, Rust, Typescript, Postgres, Redis, and AWS.

Qualifications

  • 3+ years of relevant engineering experience at tech and product-driven companies.
  • Proficiency with Typescript, React, and other web technologies.
  • Experience with backend languages, particularly Rust.
  • Hands-on experience deploying to AWS Cloud infrastructure.
  • Previous startup experience, ideally at a seed through series B startup.

Desired Attributes

  • Low Ego: Open to feedback and views it as an opportunity for growth.
  • Collaborative: Thrives in team settings and works across functions to drive the best outcomes.
  • Hustler: Puts in the effort required to make things happen.
  • Self-starter: Capable of teaching oneself new technologies and skills.

Benefits

  • Equity compensation
  • Medical, dental, and vision plans
  • Unlimited PTO and sick days
  • Parental leave

Flex is an equal opportunity employer and encourages applicants from all backgrounds and life experiences. We celebrate diversity and do not discriminate based on race, religion, color, national origin, sexual orientation, gender identity, gender expression, age, veteran status, disability, or other legally protected characteristics.

Benefits
Extracted with AI

  • Equity compensation
  • Medical, dental and vision plans
  • Unlimited PTO and sick days
  • Parental leave

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