Cellular SW Stability - Verification Engineer

Munich, Bavaria-Bayern, Germany
Software and Services


Role Number:200464933
Apple engineers have always focused on one person when they build software — the person who will use it. Working in our Software Group (SWE) you’ll see why every Apple product and service feels intuitive and simple, and why every aspect of this group’s work is built around a respect for the customer’s needs. The world is quickly moving to 5G, and iPhone offers an advanced 5G experience, transforming the way users connect, share, and enjoy content. Support for 5G on iPhone around the globe includes over 200 carriers worldwide in 60 countries and regions. Would you like to make an impact on this scale? Join our Wireless Technologies and Ecosystems (WTE) team and help us create amazing experiences through ground breaking advances in cellular technologies.

Key Qualifications

  • Strong hands-on experience in Cellular System verification by both manual and automated testing; understanding of end-to-end verification / QA flow.
  • Experience in UE-side testing and UE logs analysis.
  • Ability to triage on failures, including genuine SW crashes and test environment issues.
  • Strong understanding of 3GPP specifications (LTE & NR Air Interface, PHY, MAC, RLC, RRC, PDCP and NAS layer).
  • Good working experience with commercial test simulators and test systems such as Keysight, R&S, Anritsu call boxes for lab validation.
  • Experience in defining, developing and validating cellular modem system test cases for mobile devices.
  • Comfortable with solving problems and triaging/debugging/reproducing issues.
  • These skills will be an advantage:
  • Scripting skills using Python or programming using C language
  • Good knowledge in cellular protocol stack
  • Experience in Test Automation
  • Experience in modem SW development and understanding of architecture


We are looking for a colleague to join our Stability Verification team in Munich. The team is responsible for Stress and Stability testing of cellular modem software for modern wireless platforms. In this role you will be responsible for development of test plans and test methodology for the product stress test in multiple locations and multiple operators, as well as for tests execution, monitoring, issues analysis and reporting. It includes but is not limited to identifying issues, root cause analysis and following up with development teams on issues remedy. In this role you will collaborate with other parts of the team all around the world and have impact on product delivery by working with partners from other teams. Taking part in test strategy development, including plan for locations, operators and technologies. Identification of test cases and development of test methodology for broad feature coverage, both in live network and on simulators. End-to-end execution of Stress and Stability test campaigns, including starting, monitoring, and reporting. Analysis of test failures, issues and crashes, modem logs analysis and triage, followed by engagement with respective development teams to fix issues. Interfacing with test framework development teams on automation improvements, new test cases and end-to-end workflow. Participation in various review meetings, cross-geo and with different audiences to represent stability results and top issues. This challenging position will require you to effectively manage numerous activities simultaneously and feel comfortable in a dynamic environment. You can expect a high-profile position on a phenomenal team with many challenges and rewards.

Education & Experience

Additional Requirements

  • Apple’s most important resource, our soul, is our people. Apple benefits help further the well-being of our employees and their families in meaningful ways. No matter where you work at Apple, you can take advantage of our health and wellness resources and time-away programs. We’re proud to provide stock grants to employees at all levels of the company, and we also give employees the option to buy Apple stock at a discount — both offer everyone at Apple the chance to share in the company’s success. You’ll discover many more benefits of working at Apple, such as programs that match your charitable contributions, reimburse you for continuing your education and give you special employee pricing on Apple products.
  • Apple benefits programs vary by country and are subject to eligibility requirements.
  • Apple is an equal opportunity employer that is committed to inclusion and diversity. We take affirmative action to ensure equal opportunity for all applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, Veteran status, or other legally protected characteristics. Apple is committed to working with and providing reasonable accommodation to applicants with physical and mental disabilities. Apple is a drug-free workplace.