RAN Validation Engineer (Starlink Mobile)
About the role
SpaceX is developing a satellite-to-mobile network to deliver ubiquitous cellular connectivity worldwide through the Starlink constellation. We are partnering with mobile network operators globally to provide direct-to-cell service, extending coverage to billions of existing cellular devices. Starlink Mobile was designed to connect the unconnected, with applications including connecting hikers in national parks, emergency responders, rural communities, remote sensors, and people in emergency situations.
As a RAN Validation Engineer on the Starlink Mobile program, you will be responsible for validating and optimizing the 4G/5G RAN software protocol stack. This includes developing automated test cases for feature validation, performing lab and field testing, analyzing and optimizing network performance, and collaborating with developers to resolve complex issues.
Responsibilities
- Develop and maintain automated test cases and frameworks for eNB/gNB feature validation, including functional, performance, interoperability, and regression testing
- Analyze UE and eNB/gNB logs to debug and root-cause RAN issues, and collaborate with developers to drive fixes
- Lead UE log collection and field testing to support eNB/gNB feature development
- Build software tools and database queries to analyze RAN performance and tune eNB/gNB parameters to optimize KPIs
- Manage and prioritize network issues and work with developers to resolve them
- Troubleshoot and maintain RAN lab infrastructure in collaboration with partner teams
Requirements
- Bachelor’s degree in a STEM discipline
- Experience with RAN parameter configuration, optimization, and performance analysis
- Experience with Python for test automation and data analysis, along with experience in Linux and code repositories (Git)
- Experience developing, executing, and managing LTE/5G-NR test cases (including test planning and results tracking)
- Willing to work extended hours and weekends when needed
Preferred Skills and Experience
- 2+ years of experience with eNB/gNB and/or modem validation
- 2+ years of lab and/or field experience in new product introduction or product certification
- Strong understanding of LTE and 5G-NR protocols with hands-on experience debugging issues at the PHY, MAC, and RRC layers
- Experience with UE log analysis and associated software tools (QXDM/XCAL)
- Experience with RAN lab equipment, including testbed setup and RF troubleshooting
- In-depth knowledge of 3GPP specifications and R17+ RAN features
- Strong skills in debugging and performance optimization; exceptional analytical skills and engineering fundamentals
Additional Requirements
To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C.1157, or (iv) Asylee under 8 U.S.C.1158, or be eligible to obtain the required authorizations from the U.S. Department of State.
Pay
Pay Range:
- Level 1: $125,000.00 - $165,000.00
- Level 2: $145,000.00 - $200,000.00
Your actual level and base salary will be determined on a case-by-case basis and may vary based on job-related knowledge and skills, education, and experience.
Benefits
- Comprehensive medical, vision, and dental coverage
- Access to a 401(k) retirement plan
- Short and long-term disability insurance
- Life insurance
- Paid parental leave
- Employee Stock Purchase Plan with stock discount
- Long-term incentives in the form of company stock or long-term cash awards
- Potential discretionary bonuses
- 3 weeks of paid vacation
- 10 or more paid holidays per year
- Paid sick time (for employees in Washington State, in compliance with state and federal law)
- Company shuttles for roundtrip travel from select Seattle locations to the SpaceX Redmond office (Monday to Friday)
- Various other discounts and perks