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QA Engineer (USA Only - 100% Remote)

Remote, USA Full-time Posted 2026-06-17

About Us

Our app’s frontend is a single-page TypeScript web app mostly written in React. Our mobile app is built using React Native. Our UI updates in near real-time and takes advantage of fun technologies like Websockets, WebRTC, and GraphQL Subscriptions. Our backend tech stack consists of Python/Flask, MongoDB, Postgres, Elasticsearch, and Redis, and communicates with clients via our REST API & GraphQL endpoints. We run our services in Docker on AWS. We care about performance, maintainability, and testability of our code. We test with Vitest, React Testing Library, Playwright, and Chromatic (VRT). Writing tests is embedded into our engineering culture. We also house lists of manual test steps to follow for testing critical features like calling and composing emails. Our focus is on testing actual user behaviour, leveraging the Testing Library approach. Our product development process is inspired by Shape Up. We sweat the UI/UX details and work collaboratively within cross-functional product development teams. We think about testing in the technical specification phase and we continuously spend time assuring we’re shipping a high-quality product. We love open sourcing our code and ideas on our GitHub and on The Making of Close, our behind-the-scenes Product & Engineering blog. Check out our projects like TaskTiger and use-infinite-scroll or insights from our day-to-day work on such as Rendering untrusted HTML email, safely, How We Improved Reliability Of Our WebSocket Connections, and Cutting our Lead page LCP by half.

About the Role

As a Senior QA Engineer at Close, you would be closely working with three of our six cross-functional product development teams. These include the CRM, Admin & Onboarding, Conversations, Messaging & Scheduling, Automations & Integrations and Data Insights teams*.* You will be working with another QA engineer as well as frontend/backend engineers, product managers, designers and other teams here at Close.

  • You’ll report to our Director of Engineering (Frontend).
  • Help us improve the quality of what we’re shipping, reducing amount of bugs/regressions.
  • Help us test features as they are being built/reviewed, and keep an eye on recently shipped code for potential issues.
  • Primarily you will focus on testing/QA of user-facing behavior and creating high quality issues (bug reports) based on testing our in-product UI across web, desktop, and mobile.
  • Additionally you will test against our API and consider ways that our customers may hit issues in their integrations or Zapier.
  • Help us improve how we’re doing automated testing (unit, E2E, etc.).
  • Help Dev teams find ways to improve their testing strategies.

Come help us with projects like...

  • Modern Rich Text Editor with collaboration features
  • Workflow Automation
  • Web-based calling
  • Web Forms
  • AI Notetaker
  • Responsive mobile web & native mobile app

About You We're looking for an experienced individual to join the team as our second QA Engineer. You’ll have a solid understanding of web technologies and real world user behavior and wants to help test, QA, and launch major user-facing features. You'd enjoy an opportunity to lead the way on the QA front - helping us further improve best practices for testing/QA and the quality of our product. You’re comfortable working in a fast-paced environment with a small and talented team. At Close, you're supported in your efforts to grow professionally. You are able to manage your time well, communicate effectively and collaborate in a fully distributed team.

  • Senior 1 & 2 level candidates should have 4+ years of experience with testing/QA of user-facing behavior.
  • Staff level candidates should have 8+ years of experience.
  • Mid-level candidates should have ~3 years of similar experience and be eager to level up with the right opportunity.
  • You have a brain for breaking things. You are detail-oriented and thorough when writing down test plans and when opening high-quality bug reports.
  • You deeply care about the quality of a product — not just defects, but overall user experience.
  • You are located in the USA (lower 48 timezones).

Bonus points if you have...

  • Experience in contributing to tests in JavaScript via React Testing Library/Cypress/Playwright
  • Experience testing GraphQL and Websockets endpoints
  • Worked in B2B SaaS, specifically on Sales software

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