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Extend Logo

Senior Software Engineer - Purchasing Experience

Extend

$157,000 - $182,000
Nov 7, 2025
Remote, US
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Extend is revolutionizing the post-purchase experience for retailers and their customers by providing merchants with AI-driven solutions that enhance customer satisfaction and drive revenue growth. The Purchase Experience team owns the critical moment a customer decides to buy and needs a technical leader to architect resilient, high-throughput systems for seamless and trustworthy experiences as they scale to new global markets and product lines.

Requirements

  • You have a 7+ year history of building and maintaining critical backend systems where reliability and performance are non-negotiable.
  • You think about software from the user's perspective all the way down to the infrastructure it runs on.
  • You're as comfortable discussing API design as you are debating the merits of a database choice.
  • Our current stack includes TypeScript, React, and various AWS services, so you'll be able to hit the ground running.

Responsibilities

  • Architect for Scale: You'll be instrumental in designing the next evolution of our purchasing APIs, ensuring they can handle Black Friday-level traffic spikes without breaking a sweat.
  • Solve Complex Logic Problems: Partner with product and design to map out and build the backend systems for intricate, multi-step purchasing journeys that feel simple and intuitive to the user.
  • Drive Future Growth: Figure out how to decouple our core purchasing logic so we can launch in a new country or support a completely new type of product in weeks, not months.
  • Elevate the Team: Act as a technical compass for the engineering team, elevating the skills of your colleagues through thoughtful code reviews, mentorship, and clear architectural guidance.
  • Build Intelligent Systems: Go beyond simple request-response. Help us design and implement event-driven workflows that can manage complex, long-running processes autonomously.

Other

  • You don't just build what's asked; you ask "why" and work with your team to find the simplest, most robust solution to a business problem.
  • You thrive in a collaborative environment where you can share your knowledge and learn from others to move faster together.
  • Working with a great team from diverse backgrounds in a collaborative and supportive environment.
  • Competitive salary based on experience, with full medical and dental & vision benefits.
  • Stock in an early-stage startup growing quickly.