Senior Solutions Test Engineer, MSP; Norwalk, CT - Hybrid

Ventus is an entity within Digi, a Business Unit that’s an industry leader in IT networking innovations, leveraging technology to produce market-driving network solutions. Operating from over 20 years of experience and delivering secure enterprise class networks, Ventus develops cellular wireless and fixed line SD-WAN, Hybrid WAN, and Cellular WAN solutions for an expanding array of business connectivity applications.

We are seeking a skilled Senior Solutions Test Engineer to lead the validation of next-generation managed service provider (MSP) network solutions spanning cellular hardware, embedded software, and complex IP networks in hybrid on‑premises and AWS cloud environments. In this role, you will own end‑to‑end solution testing, from defining test strategy to deep failure analysis, ensuring our products meet the highest standards for reliability, scalability, performance, and security.

You will be hands‑on and act as a technical bridge between engineering, product management, operations, and customers - translating real‑world use cases into robust, repeatable test coverage.

Work on connected solutions that matter, influencing quality at the solution and system level. Collaborate with deeply technical teams solving real‑world MSP, cellular, and cloud networking challenges while making a measurable impact on product reliability and customer success.

• Lead testing and validation of large‑scale MSP network infrastructures built on TCP/IP, including VPN technologies such as IPsec, GRE, and Multicast.
• Design and execute test strategies for hybrid deployments, integrating on‑premises infrastructure with AWS cloud services.
• Validate complex cellular solutions involving hardware, firmware, operating systems, and IP networking.
• Own end‑to‑end solution quality, ensuring all components work together under real‑world conditions.
• Define comprehensive test plans, test strategies, and acceptance criteria aligned with product and customer requirements.
• Design, build, and maintain test systems including: test automation frameworks, custom hardware test setups, network simulation and traffic generation tools
• Identify gaps in test coverage and proactively improve testing methodologies.
• Automation & Tooling
• Develop and maintain test automation using Python, Bash, and related scripting languages.
• Build tooling to validate performance, scalability, failover, resiliency, and long‑running stability.
• Integrate automated testing into CI/CD pipelines where applicable.
• Failure Analysis & Quality Advocacy
• Perform deep root‑cause analysis of complex failures across hardware, software, and network layers.
• Clearly document issues, reproduce defects, and work closely with development teams to drive resolution.
• Champion quality throughout the product lifecycle, advocating for design improvements and risk mitigation.
• Cross‑Functional Collaboration
• Partner closely with software, firmware, hardware, Dev Ops, product management, and support teams.
• Translate customer requirements and field scenarios into actionable test cases.
• Provide technical guidance and mentorship to other test and engineering team members.

• 6+ years of experience in test engineering, systems validation, or network solutions testing.
• Strong expertise in TCP/IP networking and large‑scale IP network architectures.
• Hands‑on experience with VPN technologies, including IPsec, GRE, and Multicast.
• Proven experience testing MSP‑grade or carrier‑class solutions.
• Strong scripting skills in Python and Bash for automation and tooling.
• Experience with scalability, performance, and soak testing in production‑like environments.
• Proven ability to troubleshoot and analyze complex, multi‑layer system failures.
• Linux systems knowledge and experience with network test tools (traffic generators, packet capture, protocol analyzers).
• Excellent communication skills with the ability to explain complex technical issues to diverse audiences.
• Highly organized, detail‑oriented, and capable of driving large test initiatives to completion.

• Background in cellular or wireless solutions (LTE, 5G, gateways, routers, or…