xelys jobs xelys jobs

Senior Software Engineer

Haystack

seniorfrontend United States Yesterday via LinkedIn

See how well this job matches your profile

Sign up to get an AI match score and generate a tailored application in seconds.

Get your match score

Tags

ReactTypeScriptReduxCSSAccessibilityWCAG 2.1 AACheckoutPayment SystemsFrontend ModernizationHigh-Traffic Web Applications

About the role

Role Overview

Senior Software Engineer to build and modernize the systems behind guest checkout and payment experiences for consumer services used by millions.

Responsibilities

  • Build and ship features across guest-facing checkout and payment flows.
  • Modernize a large, mature frontend codebase, including migrating legacy state-management to current standards.
  • Deliver payment features end-to-end from design through launch on high-traffic consumer surfaces.
  • Ensure accessibility for all shipped products, meeting WCAG 2.1 AA.
  • Trace features from the UI through the backend services that power them.

Requirements

  • 7–10 years building production web frontends with React and TypeScript.
  • Deep Redux experience, including refactoring and migrating large, established Redux codebases.
  • Strong CSS and layout fundamentals.
  • Proven experience shipping accessible UI that meets WCAG 2.1 AA.
  • Ability to read backend code and connect UI features to underlying services.
  • Proven ability to ramp up quickly on large, unfamiliar codebases.

Nice to Have / Signals

  • Experience working on user-facing, high-impact payment systems.
  • Comfort working in a distributed, async team environment.

Scraped 7/26/2026