Full-Stack Engineer
About the job
- 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.
- 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
About the company
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
Get referred to Ranger
See people who can refer or advise you
Simplify's Take
What believers are saying
- Ranger announced $8.9M total funding on 2026-08-03, extending runway.
- General Catalyst and XYZ back the company, signaling strong investor validation.
- Ranger claims 200-plus engineer hours saved annually, an easy ROI pitch.
What critics are saying
- Momentic called Ranger less mature on 2026-09-02, pressuring premium pricing.
- Ranger remains web-only in August 2026, while Autify and Functionize sell mobile coverage.
- If autonomous QA misses critical bugs, one headline failure kills trust and sales.
What makes Ranger unique
- Ranger pairs AI-written Playwright tests with human review, unlike pure self-serve tools.
- Its 2026 customer list included OpenAI, Suno, Clay, and Dust.
- Slack and GitHub integration keeps test results inside CI/CD workflows.
Help us improve and share your feedback! Did you find this helpful?
Benefits
- Hybrid Work Options