Software Engineer, Wireless - Cellular (Automotive 5G)

Location: Bay Area, California, United States

Annual salary: $150,000–$175,000

Company

hirify.global is a design house focused on connected products in consumer electronics and IoT, with expertise in mobile, embedded, and wireless technologies.

What you will do

• Build and own the vehicle-side eSIM client using GSMA SGP.32, integrating the embedded eUICC with cloud eSIM and connectivity management platforms.
• Extend the cellular stack for multi-carrier and multi-region operation, including carrier detection, APN configuration, network selection, roaming, and recovery.
• Design and maintain modern C++ services on embedded Linux for modem control, concurrent data sessions, IPv4/IPv6 networking, and Wi-Fi handoff.
• Implement resilient connectivity recovery across data stalls, registration failures, modem initialization problems, and vehicle sleep/wake states.
• Define connectivity telemetry, analyze modem diagnostics and fleet data, and drive firmware and modem defects to resolution with vendors.
• Write design documentation, review code, mentor engineers, and set technical direction with cloud, hardware, RF, systems, test, and homologation partners.

Requirements

• Bachelor’s degree in Computer Science, Electrical Engineering, Computer Engineering, or equivalent practical experience.
• 6+ years of embedded or systems software experience, including 3+ years of device-side LTE/5G cellular software shipped in production devices such as telematics units, IoT modules, or phones.
• Strong modern C++17 or later on embedded Linux, including multithreaded services, state machines, IPC, and unit testing with GoogleTest/GoogleMock or similar.
• Experience with host-side modem integration through vendor SDKs, QMI, AT commands, MBIM, or Android RIL.
• Working knowledge of 3GPP procedures, including attach and registration, reject causes, PDN/PDU sessions, APN configuration, PLMN selection, and roaming.
• Linux networking experience with IPv4/IPv6 dual-stack, policy routing, iptables/nftables, DNS/DHCP, and tcpdump or Wireshark.
• Experience debugging field cellular issues using modem diagnostic logs such as QXDM/QCAT or equivalent through root cause in the application, modem firmware, or network.

Nice to have

• eSIM development with GSMA SGP.32, SGP.22, or SGP.02; eUICC ES10 interfaces and APDUs; IPA/LPA, SM-DP+, eIM, bootstrap, and operational profile flows.
• Qualcomm automotive or IoT modem platforms, including the Qualcomm Telematics SDK.
• Carrier certification, GCF/PTCRB, carrier configuration files, and acceptance testing across North America, Europe, or Asia-Pacific.
• IMS, VoLTE/VoNR, emergency calling, eCall, NG-eCall, or E911 experience.
• Multi-carrier, multi-SIM, or dual-modem products; steering-of-roaming behavior; automotive or regulated embedded products.
• Cellular test automation with network simulators, RF attenuation setups, and Python test frameworks; Yocto/BitBake or Bazel.

Culture & Benefits

• Scandinavian work culture focused on knowledge sharing, collaboration, and work-life balance.
• Paid time off, vacation, paid holidays, paid parental leave, and paid bereavement leave.
• 401(k) with matching, life insurance, FSA, HSA, employee assistance, and referral programs.
• California positions include long-term and short-term disability insurance.
• The role involves collaboration with clients, vendors, and cross-functional engineering partners in a fast-paced environment.