Full-Time

Full-Stack Engineer

Ranger

Ranger

11-50 employees

AI-assisted end-to-end QA testing

Compensation Overview

$130k - $200k/yr

No H1B Sponsorship

San Francisco, CA, USA

Hybrid

Minimum 3 days in-office required.

Category
Software Engineering (1)
Required Skills
Kubernetes
Python
JavaScript
React.js
Node.js
SQL
Java
Docker
TypeScript
AWS
Go
REST APIs
Linux/Unix
Requirements
  • 6-10+ years of professional experience in software engineering.
  • Strong desire to lead, execute, and own their own projects.
  • Track record of learning new languages, technologies, and patterns on the job.
  • Comfortable working and reasoning across the stack - frontend, backend, and infrastructure.
  • Willingness to work a hybrid schedule with a minimum of 3 days in-office.
  • Applicants must be authorized to work for ANY employer in the U.S. We are unable to sponsor or take over sponsorship of an employment Visa at this time.
Desired Qualifications
  • Experience at an early-stage startup
  • Experience with DOM parsing and manipulation
  • Familiarity with LLM APIs and experience using them in a production environment
  • Experience with any of our tech stack: Express+NodeJS, PostgreSQL, MongoDB, Playwright, FFmpeg, GCP

Ranger focuses on end-to-end QA testing for web-based products by combining AI and human expertise. An AI agent writes tests, which are then reviewed by a team of human QA experts to ensure quality. This dual approach helps catch real bugs and keeps core workflows intact, so development teams can move faster on their product roadmaps. Ranger targets teams that want rapid development and deployment, offering a service that automates and refines testing tasks. On average, its clients save about 200 hours per engineer each year. The company's goal is to make QA more efficient and trustworthy, pulling testing work away from developers so they can focus on building features.

Company Size

11-50

Company Stage

N/A

Total Funding

N/A

Headquarters

N/A

Founded

N/A

Simplify Jobs

Simplify's Take

What believers are saying

  • General Catalyst invested in Ranger's agentic AI QA approach.
  • OpenAI, Clay, Suno, and Dust use Ranger for critical testing.
  • Saves 200 engineer hours annually via automated end-to-end testing.

What critics are saying

  • Applitools automates visual UI testing at 99.9% accuracy by March 2026.
  • Meticulous.ai launches fully autonomous E2E tests at 95% reliability in February 2026.
  • OpenAI shifts to internal agentic QA models by April 2026, dropping Ranger.

What makes Ranger unique

  • Ranger's AI agent writes tests reviewed by human experts for quality.
  • Platform auto-triages failures to surface only real bugs in CI/CD.
  • Hosted infrastructure scales tests without extra staff or environments.

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Benefits

Hybrid Work Options

Company News

The Manila Times
Mar 2nd, 2025
BleeqUp Debuts Ranger, The World's First 4-in-1 AI Cycling Camera Glasses at MWC 2025

BleeqUp debuts Ranger, the world's first 4-in-1 AI Cycling Camera Glasses at MWC 2025.