Our client - a new Silicon Valley based profitable B2C product startup building innovative mobile solutions for the planet, is now looking for an Infrastructure QA Engineer.

Type: Remote, full-time
Start date: ASAP
About project and role:

The product VPN - Super Unlimited Proxy is a Virtual Private Network that provides users online privacy and anonymity by creating a private network from a public internet connection.

The company has over 44M MAUs (and growing) with a solid customer base in the US and worldwide. In iOS, Out of the top markets we track worldwide, upon searching for the keyword VPN in the App Store, they are the #1 product in 32 out of 40 countries follow (including in the US, all of Western Europe, etc.) and in the top 3 for all 40 countries. In addition, they have been consistently ranked in the top 10 productivity apps in the US, right up with Google Docs, Google Sheets, etc.
The product has >1.6M very high-quality ratings in iOS alone.

Now we are looking for a drive, full of positive energy QA Engineers with a solid background in backend testing.

Responsibilities:

• Testing servers
• Testing Admin panel
• Testing APIs
• Analyze CS tickets
• Prepare performance scripts based on JMeter

Requirements:

• 2+ years of experience in Quality Assurance, preferably in infrastructure, backend, or platform-related projects
• Strong understanding of server-side testing, including Linux-based environments, logs analysis, and configuration validation
• Experience testing Admin panels / back-office systems, including role-based access, data integrity, and system workflows
• Solid knowledge of API testing (REST, JSON), including request validation, error handling, and edge cases
• Experience working with API testing tools such as Postman, Swagger, or similar
• Ability to analyze Customer Support (CS) tickets, reproduce issues, identify root causes, and collaborate with engineering teams on fixes
• Understanding of performance and load testing concepts (latency, throughput, bottlenecks, scalability)
• Hands-on experience with performance testing tools (e.g., JMeter)
• Familiarity with monitoring and logging tools is a plus
• Strong analytical skills, attention to detail, and ability to work independently
• Good communication skills and experience collaborating with developers, DevOps, and support teams
• Good communication skills (verbal and written)
• English - Intermediate+