Senior System Test Engineer

Mountain View, CA · Remotefull timeRemote

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senior

$135k–$145k

H1B: yes

Skylo Senior System Test Engineer at Skylo designs and executes quality assurance strategies for the company’s satellite Non-Terrestrial Network (NTN). The role focuses on validating system reliability, performance, and 3GPP standards compliance across device, radio access, and core network layers.

Responsibilities

Develop and execute comprehensive test plans to validate Skylo’s NTN system functionality, scalability, and performance - from understanding requirements, to defining test plans to execution to automation
Collaborate with system architects, software developers, and network engineers to define test strategies for new features and releases.
Conduct integration, interoperability, and regression testing across device, RAN, core network, and satellite segments.
Perform lab-based and field-based testing to validate performance under real-world conditions.
Analyze and debug complex system issues, identifying root causes across hardware, software, and network layers.
Define KPIs, collect telemetry, and assess observability tools for ongoing system validation.
Document test results, provide clear feedback to development teams, and drive resolution of issues.
Actively participate in test automation, enhancing test coverage for different test categories
Mentor junior engineers and contribute to best practices in system validation methodologies and processes.
Required Experience:
Proven track record in system test or validation engineering or acceptance testing for large-scale, distributed, or telecommunications systems.
Strong understanding of 3GPP cellular protocols (LTE/5G/NBIOT-NTN), with a strong emphasis on RAN and Core Network components.

Qualification

Additional information

Preferred

Experience with satellite or NTN systems, including LEO/MEO/GEO connectivity.
Familiarity with RF testing methodologies, lab equipment, and field measurement tools.
Exposure to cloud-based infrastructure and virtualized test environments.
Advanced degree in Electrical Engineering, Telecommunications, Computer Science, or related discipline.
Hands-on experience using JIRA & Confluence
Experience with designing and building test automation frameworks using Robot Framework and Python
Experience leading system validation projects or mentoring junior engineers.
Additional information