Full stack QA Java/Kotlin

OnHires; San Francisco (CA); Remote; USD 100,000 - 130,000; Full time

Job summary

A technology and liquidity provider is seeking a QA Engineer with extensive experience in backend test automation. The role requires 5+ years in QA, proficiency in Java or Kotlin, and a strong understanding of test design principles. The position is remote-first and part of a fast-paced, Agile environment. Ideal candidates will have experience with automated tests for backend services and be passionate about quality assurance.

Qualifications

• 5+ years in QA with a focus on automation.
• 3+ years of experience with Java or Kotlin in test automation.
• Solid understanding of HTTP and RESTful APIs.

Responsibilities

• Analyze business requirements and translate them into test strategies and automation suites.
• Design and implement maintainable automated tests for backend services.
• Identify, reproduce, and troubleshoot test failures.

Skills

Test automation

Java

Kotlin

HTTP and RESTful APIs

Test design principles

Git

Tools

TestNG

Maven

RestAssured

Job description

About Company:
The company is a liquidity and technology provider of solutions for the crypto and foreign exchange (FX) industry. It specializes in B2B services and products and caters to a wide range of clients, including large licensed brokers, crypto exchanges, crypto brokers, forex brokers, hedge and crypto funds, and professional managers.

Key Responsibilities

• Analyze business requirements and translate them into test strategies and automation suites
• Design and implement maintainable automated tests for backend services (HTTP, gRPC, WebSocket, FIX)
• Identify, reproduce, and troubleshoot test failures
• Occasionally perform manual testing and develop automation for web UI
• Apply test design techniques for full coverage with minimal redundancy
• Contribute to planning, triaging, and root cause analysis
• Work closely with cross-functional teams and participate in Agile ceremonies

Must-Have Qualifications

• 5+ years in QA with a focus on automation
• 3+ years of experience with Java or Kotlin in test automation
• Solid understanding of HTTP and RESTful APIs
• Strong knowledge of test design principles
• Backend test automation experience
• Experience with Git
• Ability to reason about complex systems

Nice to Have

• Experience with: TestNG, Maven, RestAssured
• Web UI test automation (Playwright or similar)
• Familiarity with protocols like gRPC, WebSocket, and FIX
• Performance testing with Gatling/Scala
• Linux, shell scripting

Work Setup & Process

• Remote-first within the GMT+4 ±1 time zone
• Hybrid Russian-speaking team
• Fast-paced, Agile environment

If you are passionate about backend test automation and want to work on technically challenging products in a stable, international team, we’d love to hear from you.