Quality Assurance Engineer (Microsoft Azure IoT) - (B2B Contract)

Mesh Systems is an Internet of Things (IoT) Solutions Accelerator providing enterprise-grade implementations globally. As a trusted Microsoft Partner, they specialize in scalable, cloud-based systems processing massive data volumes. With nearly 20 years of industry experience, they develop end-to-end IoT solutions with a repeatable cloud framework to accelerate time to market and abstract complexity.

• 3+ years of experience in quality assurance, preferably in IoT, embedded systems, or cloud-based platforms.
• Experience with test automation frameworks and tools such as Selenium, Playwright, Cypress, Postman, or similar.
• Proficiency in at least one programming language for test automation: Python, JavaScript/TypeScript, or C#.
• Hands-on experience with API testing and familiarity with RESTful services and message queuing systems.
• Knowledge of cloud platforms, preferably Azure, and cloud-based testing strategies.
• Experience with CI/CD pipelines and integrating automated tests into DevOps workflows.
• Strong analytical and troubleshooting skills across hardware, firmware, and software.
• Familiarity with version control systems (Git) and agile development methodologies.
• Excellent communication skills and strong English proficiency for collaboration with U.S. partners.
• Detail-oriented mindset with a passion for quality and continuous improvement.

Bonus Points:

• Experience with Azure DevOps and Azure Pipelines for CI/CD.
• Experience with Docker containerization.
• Experience with k6.
• Background in industrial IoT, asset management, or monitoring systems.

• Design, develop, and execute comprehensive test plans for IoT systems including embedded devices and web/mobile applications.
• Perform end-to-end testing of IoT solutions covering device provisioning, connectivity, data ingestion, and cloud processing pipelines.
• Test hardware-software integrations, communication protocols (MQTT, AMQP, HTTP/REST, CoAP), and edge computing solutions.
• Develop and maintain automated test frameworks for APIs, web applications, and IoT device simulations.
• Conduct performance, load, and stress testing on cloud-based IoT platforms to ensure scalability and reliability.
• Validate data accuracy and integrity across the entire IoT data pipeline from device to cloud to application.
• Collaborate with firmware engineers, backend developers, and DevOps teams to identify and resolve quality issues.
• Create and maintain test documentation, bug reports, and quality metrics.
• Participate in design reviews and provide quality-focused feedback early in the development cycle.
• Troubleshoot complex issues across multiple layers of the technology stack (device, edge, cloud, application).
• Work in a small, autonomous engineering team influencing the technical direction of solutions.

• Collaboration within the Central European Timezone (CET).
• Support provided with formalities for Polish contractors working with a U.S. company.