Senior Test Automation Engineer, Python

Network Optix

8d•Hybrid

About The Position

We are looking for a Senior Test Automation Engineer (SDET) to design, build, and evolve large-scale integration and end-to-end validation for complex Nx environments. This role sits within the Functional Test (FT) Automation team and focuses on expanding automated validation for desktop and mobile clients, as well as the APIs and services they interact with. Our goal is to reduce reliance on manual validation while providing fast, reliable feedback to development teams through automated system-level testing. As a senior engineer, you will operate with a high degree of independence. You will improve test reliability, strengthen CI signal quality, identify gaps in coverage, and help move deterministic validation earlier in the development lifecycle. You will work across virtual machines, physical devices, networking, cloud services, and rich client applications — including embedded servers, physical cameras, and desktop/mobile clients — to ensure the system behaves reliably in realistic environments and deployment topologies. Our team values clean, robust code, curiosity, and continuous learning. We encourage experimentation, thoughtful problem solving, and collaborative improvement of our infrastructure. There is no untouchable legacy code, and every engineer has a voice in shaping our tools, frameworks, and engineering practices.

Requirements

5+ years of commercial experience in software development or test automation
Expert-level Python proficiency
Strong computer science fundamentals
Extensive experience automating tests in virtualized environments
Experience testing desktop and mobile client applications
Deep knowledge of test architecture and scalable automation frameworks
Experience integrating automated tests into CI/CD pipelines
Strong troubleshooting skills using logs, dumps, and system diagnostics
Cross-platform experience (Windows and Linux)
Experience optimizing test execution for fast feedback cycles
Strong Git and version control workflows
Experience with VM environments and system automation
Understanding of networking fundamentals
Experience validating rich client applications

Nice To Haves

Familiarity with containerization or virtualization tools (e.g., Docker)
Experience with cloud services, embedded devices, or hardware-integrated systems is a plus
Experience improving test flakiness at scale
Experience with modern web automation tools
Familiarity with performance testing for desktop or mobile applications
Experience developing shared testing libraries or frameworks
Software design and architecture, Windows/Linux administration, network or system programming
Familiarity with AI-assisted testing tools

Responsibilities

Design, develop, and maintain large-scale integration and end-to-end automated tests
Build scalable automation solutions validating desktop and mobile clients, APIs, and system interactions
Strengthen layer-appropriate automation (API/integration vs GUI)
Apply advanced test architecture and automation design patterns
Contribute to the evolution of the test framework and shared testing libraries
Identify gaps in automated coverage and areas of regression risk
Apply risk-based thinking to prioritize automation work
Reduce over-reliance on brittle GUI automation by strengthening lower-level validation
Proactively propose improvements that increase framework scalability, reliability, and maintainability
Create and manage virtual environments (Windows, Ubuntu)
Automate testing for desktop and mobile clients across virtualized environments
Configure Windows and Linux systems for automated testing
Automate desktop and mobile GUI using Qt-based tools
Continuously improve test infrastructure to make it robust, fast, and scalable
Ensure automated tests provide fast, trustworthy CI feedback
Optimize test execution to improve feedback cycles and build reliability
Investigate and systematically reduce test flakiness
Improve pre-commit, smoke, and regression gating
Partner with developers to distinguish product defects from test instability
Contribute to reducing defect leakage into production
Improve infrastructure scalability to support faster test execution and larger coverage
Investigate failures using logs, dumps, and backtraces
Use tools like strace and procmon to dig into system-level issues
Analyze failures across different OS environments
Collaborate with developers and teammates to identify root causes
Communicate findings clearly, with actionable next steps
Write clean, readable, and maintainable Python code (3.10+)
Maintain professional Git history
Participate in strict code reviews and design discussions
Contribute to long-term framework evolution and infrastructure improvements
Develop reusable testing utilities and shared automation libraries
Mentor junior engineers and promote automation best practices across the team
Support continuous improvement of engineering standards and testing practices