Backend Engineer & Architect - Node


LEX Markets is a venture-backed fintech startup conducting securities offerings of commercial real estate buildings. LEX provides a new source of capital to property owners while giving retail investors new access to quality real estate investments.

About the Role:
LEX is seeking to hire a Backend & API Engineer to help build and architect our APIs and backend services. As one of the first 7 engineers on a team with a flat structure, you’ll fully own core components and services.


  • Design, build, and maintain APIs, services, and systems across LEX's core platform
  • Own scaling our systems as our customer base continues to grow
  • Work with engineers across the company to build new features
  • Improve engineering standards, tooling, and processes
  • Debug production issues across services and multiple levels of the stack
  • Build infrastructure that is specific to our APIs
  • Plan for the growth of LEX’s infrastructure
  • Focus on eliminating risks and build reliable, scalable and performant systems
  • Hold yourself and others to a high bar when working with production systems
  • Over time, hire a team of engineers to support your work.


  • 5+ years of software engineering experience
  • Enjoy and have experience building APIs
  • Experience building and deploying systems from scratch
  • Solid foundation of modern web frameworks
  • Advanced in Node, Express, and JavaScript / TypeScript
  • Good intuition for REST API design
  • Strength thinking about systems — their edge cases, failure modes, and lifecycles
  • Similar experience as an early engineer at a startup would be a bonus.

Bonus Points:

  • Experience as an engineer at an early stage start up
  • FinTech or finance related work history
  • Expert with microservice architecture

Check out some LEX press: