QA Engineer | Test Designer | Senior

Department: Research and Development

Location: Global Remote

Employment Type: FullTime

Excitingly, we're developing new products, including BUSY Bar. Testing is a crucial and extensive part of the development process. As our developers continue to roll out new versions of both software and hardware, we are looking for a QA Engineer to join our team.

Requirements

• 4-5 years in QA, including at least 1-2 years in a test designer/analyst role.

• Expertise in test design for complex software features: Experience designing test coverage for features implemented simultaneously in firmware, cloud (backend API), and mobile applications (iOS/Android). Ability to decompose end-to-end (E2E) scenarios into components and test each layer.

• Deep requirements analysis and systems thinking: Skill in identifying implicit dependencies and integration points between the device and the cloud. Experience working with user stories, API technical specifications, and data exchange protocols (e.g., MQTT, WebSockets, REST).

• API and backend logic testing: Practical experience testing REST/gRPC APIs (using Postman, Swagger, existing automated tests). Understanding of how business logic is distributed between the device and the cloud.

• Working with firmware and logs: Ability to work with device logs (UART, syslog) and cloud logs (e.g., Kibana, Sentry) to analyze system behavior, diagnose bugs, and confirm scenario execution. Basic understanding of embedded systems architecture.

• Mobile application testing: Experience testing native or cross-platform mobile applications that interact with devices via BLE/Wi-Fi and the cloud.

• Processes and tools: Experience working in Agile/Scrum and building testing processes from scratch in a team. Confident use of Jira, Confluence, TestRail/Qase/TestOps for managing test artifacts.

• Automation mindset: Understanding the principles of test automation at different levels (API, mobile). Ability to write clear test specifications and scenarios for handoff to automation engineers.

• Proficiency in English at a level sufficient for reading documentation and communicating with an international team.

Nice-to-haves

• IoT/smart device testing experience: Understanding the device lifecycle (testing OTA updates, loss/recovery of connection scenarios, offline operation).

• Basic programming skills in Python/JavaScript: Not for developing frameworks, but for reading firmware code (C/C++), writing simple scripts for test data generation or log parsing, and understanding automated test code.

• Experience working with device simulators/emulators for testing the cloud part without physical hardware.

• Knowledge of networking fundamentals (Wireshark, tcpdump) for analyzing network traffic between the device and the cloud.

• Security testing experience at the API and device-to-cloud data exchange protocol level.

• Leadership experience: Mentoring junior engineers, improving QA processes within the team.

Your responsibilites

Designing tests for E2E scenarios

• Developing test cases and checklists for scenarios where device state is changed via the app and the result is verified in the cloud, and vice versa (e.g., "adding a device to a room," "creating a schedule," "OTA update").

• Test design for verifying data consistency between the mobile app (cache), cloud database, and the actual device state.

Testing Firmware & Cloud integration

• Analyzing and testing device-to-cloud communication protocols. Checking the handling of network failures, reconnections, and timeouts.

• Testing over-the-air (OTA) updates: verifying the process from the cloud receiving the firmware to the successful update and rollback of the device.

• Analyzing device and cloud logs to verify correct command execution and detect anomalies.

Testing API and business logic in the cloud

• In-depth testing of cloud and local APIs used by the application and device. Focus on use cases, data validation, and error handling.

• Testing scenarios where logic is executed in the cloud.

Managing test data and configurations

• Creating a data strategy for testing different device types, users, and scenarios (e.g., a large number of devices in one room).

Automation and process optimization

• Identifying and prioritizing E2E scenarios for automation (e.g., using Python + pytest).

• Consulting automation engineers on the specifics of working with the device and cloud. Reviewing automated tests for edge case coverage.

• Participating in the creation and maintenance of a stable test environment for smoke and regression testing.

What we offer

• Choose your work format: office, hybrid, or fully remote from anywhere in the world

• You will be provided with all the necessary equipment for a comfortable working environment

• Benefits such as VHI, corporate sports, foreign language courses, and therapy sessions

• A five-day workweek with a flexible start of the working day