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Modem/Cellular System Test Engineer



Quality Assurance
Posted on Monday, January 16, 2023

Modem/Cellular System Test Engineer

Cupertino, California /
Software Engineering /
Full Time - Remote
/ Remote
Founded in 2020 by former members of the Essential Products team in Silicon Valley, OSOM is a hardware/software technology start-up that prioritizes privacy. OSOM (pronounced awe-some) stands for “Out of Sight, Out of Mind.” As our mission states, we are creating products that give people access to the world without giving the world access to them. We are excited to introduce a future where our users decide how and when to share their personal information.
At OSOM, we believe privacy is a right, not a luxury or a privilege. We want to enable every individual to own their privacy. We are looking for passionate people to help us build this future.
We are looking for a passionate, hands-on modem/cellular system test engineer who has expertise in hands-on wireless system test diagnostics, analytics, certification, IOT, and/or cellular system performance. The Modem/Cellular System Test Engineer will be responsible for working closely with the development teams to understand requirements, break the requirements down to write, and execute test cases, then document all failures with appropriate logs/screenshots.

What You’ll Do:

    • Strong understanding of 3GPP specifications (LTE & NR Air Interface, PHY, MAC, RLC, RRC, PDCP, and NAS layer)
    • Participate in all ongoing projects
    • Work within development and testing schedules in order to meet all expectations and deadlines
    • Establish and uphold the quality standards of the software team
    • Review product requirements documents for conformity
    • Interpret and report testing results and be a vocal proponent of quality
    • Work intimately with software development engineers to understand the overall technical requirements and how each feature will be implemented

What We’re Looking For:

    • Experience organizing and leading a structured test process for shipping a software and hardware product
    • 5+ years of hands-on testing experience in wireless system testing, certification, and/or cellular system performance
    • Experience in defining, developing, and validating cellular modem system test cases for mobile devices using popular test development platforms
    • Broad spectrum of knowledge and understanding of the end-to-end wireless system architecture from wireless physical layer all the way to application layer
    • Excellent planning, communication, and observational skills
    • Jira, Confluence, Testrail experience preferred
    • Embedded Linux or Android experience required
    • BS degree in a STEM field or equivalent experience
    • International remote work possible


    • The US base salary range for this full-time position is $140,000-$180,000 + bonus + equity + benefits. Our salary ranges are determined by role, level, and location. The range displayed on each job posting reflects the minimum and maximum target for new hire salaries for the position across all US locations. Within the range, individual pay is determined by work location and additional factors, including job-related skills, experience, and relevant education or training. Your recruiter can share more about the specific salary range for your preferred location during the hiring process.

Perks You’ll Receive:

    • Medical, Dental, Vision, and Life Insurance
    • Maternity, Paternity, & Adoption Leave
    • Flexible Paid Time Off & Holidays Including a Winter Shutdown
    • Work-from-Home Stipend
At OSOM, we are committed to providing an environment fundamentally built on mutual respect; where employment opportunities are available to all applicants and employees without regard to race, color, religion, sex, pregnancy, nationality, age, disability, marital status, sexual orientation, gender identity, gender expression, genetic information (including characteristics and testing), military service and veteran status, and any other characteristic protected by applicable law. OSOM believes that diversity and inclusion among our team is critical to our success as a company. 
OSOM is requiring all employees to be vaccinated against COVID-19 unless the employee has a medical or religious reason not to be vaccinated.
If you need any accommodations or assistance with applying for a position, please email us at
Read more about OSOM here: