Mid-Senior QA Engineer

Key Responsibilities

Hardware Peripheral Testing: Design, execute, and maintain test scenarios for physical

hardware components, peripheral drivers, and low-level system services.

System Service Validation: Validate backend services, system daemons, and background

workers under various physical conditions (e.g., paper out, card reader timeouts, hardware

disconnects, power cycles).

API Service Automation: Build and expand test automation suites for backend APIs, hardware

abstraction layers, and IPC/socket channels using modern automation and mock tools.

Defect Lifecycle Management: Identify, log, prioritize, and track hardware, driver, and service

defects with precise system logs, peripheral state data, and reproduction steps in Jira or Azure

DevOps.

Compliance Transaction Verification: Test transaction workflows to ensure strict adherence to

security protocols, data integrity, and industry standards (e.g., PCI compliance).

Cross-Functional Collaboration: Partner directly with backend .NET engineers and technical

operations to debug edge-case hardware faults, refine acceptance criteria, and ensure reliable

releases.

Required Qualifications Technical Skills

Experience: 4+ years of professional quality assurance experience, with direct experience testing

software integrated with physical devices, hardware, or external peripherals.

Hardware Systems Testing: Strong expertise testing software that interfaces with physical

peripherals (e.g., credit card readers/POS terminals, receipt printers, scanners, or kiosk

components).

API Backend Testing: Solid proficiency in testing RESTful APIs, backend services, and

asynchronous processes using tools like Postman, Swagger, or custom CLI harnesses.

Test Automation: Hands-on experience developing automated integration or API test suites using

tools like Playwright, Selenium, C#, or Python.

Tooling Logs: Expertise in analyzing system logs, Windows Event Logs, and device diagnostic

traces to pinpoint root causes.

Core Competencies Cultural Fit

Self-Motivated Learner: Curious about low-level systems, eager to understand complex hardware

specs, and proactive in expanding technical skills.

Strong Individual Contributor: Able to take ownership of hardware test setups, ask critical

architectural questions, and execute test cycles independently.

Reliable Team Player: Values transparent communication, acts as a quality advocate, and

collaborates smoothly with backend developers and operations teams.

Remote-Ready Communicator: Clear, precise, and prompt communication across chat tools

(Slack, Teams) and project management systems (Jira, Azure DevOps).

Preferred / "Nice-to-Have" Qualifications

Experience testing self-service kiosk, Point-of-Sale (POS), or transaction processing systems.

Familiarity with hardware communication interfaces (Serial/COM, USB, HID, TCP/IP sockets).

Exposure to mocking or simulating physical hardware interfaces for automated test runs.

AI-Assisted Quality Engineering: Experience using AI tools (e.g., GitHub Copilot, Claude, Cursor)

to generate edge-case test data, draft test scripts, and parse complex log output faster.

Required Skills

C# / .NET Core .NET 8 Hardware Systems Testing Hardware/Peripheral Integration API Service Automation .NET Core / .NET 8

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