Telecom & Modem Engineer (Senior/Staff)

Reading modem traces well is rare, which is why this stays a specialist problem. Few engineers get to build the tool their own field will use. You will be building the system that modem and Wi-Fi engineers at device makers rely on to get from a trace to a root cause.

You'll build the first system that does automatic cross-layer root cause from the baseband, through QMI and the radio HAL, into Android, grounded in the customer's own stack. The same applies on the Wi-Fi side: automatic cross-layer root cause from the Wi-Fi driver and firmware, through the networking stack and management plane, on OpenWrt-class access points and CPE.

The bar

• 8 plus years of relevant engineering experience.
• Fewer than 8 is fine if you were at a startup where you owned the whole connectivity surface yourself.
• Deep expertise in one of the two tracks below.
• • Cellular: modem/baseband bringup, debug, or protocol-stack work; fluency with DIAG/QMI, QXDM/QCAT, and reading modem crash dumps; working knowledge of 4G/5G NAS, RRC, and lower-layer behavior; IMS/VoLTE/VoNR debugging (SIP/IMS signaling and carrier field issues); comfort at the RIL / radio HAL boundary.
  • Wi-Fi / CPE: OpenWrt-based access points or CPE; Wi-Fi 6/7 (802.11ax/be); hostapd/wpa_supplicant and mac80211/cfg80211; Qualcomm QSDK or MediaTek SDKs; debugging from wlan driver/firmware traces, hostapd logs, syslog, and packet captures.
• Proficient in day-to-day work with CLI-based AI coding tools like Claude Code (or an equivalent). It's how the team operates, not a nice-to-have.

What you'll do

• Build parsers and analysis for modem traces: DIAG, QMI, QXDM/QCAT, modem ramdumps and crash logs.
• Build parsers and analysis for AP/CPE diagnostics: wlan driver and firmware logs, hostapd/wpa_supplicant logs, syslog, and packet captures.
• Map observed failures to root cause across NAS, RRC, and L1/L2, and across the RIL / radio HAL interface into Android.
• Implement Wi-Fi-stack reasoning: association/auth flows, roaming, mesh (EasyMesh), throughput and interference triage, driver/firmware crash analysis.
• Encode the cellular- and Wi-Fi-stack reasoning the platform uses to ground remediations.

Bonus

• Qualcomm modem internals.
• MediaTek modem familiarity (ELT / MTK logging).
• Carrier certification or lab/field debug experience.
• Any exposure to log-analysis or ML tooling.
• Network-side or RAN familiarity (gNB, RRC, NGAP, CU/DU/RU splits, open-RAN).
• EasyMesh, TR-069/TR-369 (USP), or TR-181 device management.
• RF debug and throughput/interference triage; FTTH/ONT familiarity.
• Operator acceptance testing.

What we offer you

• A front seat as we scale. Customer calls, the roadmap, the pipeline, how the company is actually doing.
• Top-of-market salary and founding equity. You'll own a piece of what you build.
• The AI tools you need. We use AI across writing code, reviewing it, research, ops, and internal tooling. If something would help you work better, we'll get it.
• Early ownership, and full visibility. We move fast, and you'll help decide where.
• Comprehensive medical insurance for you and your family.
• Start-up perks and flexible time off, the kind people actually take.
• A small team that's easy to work with. People here like solving hard problems and helping each other out.

What to expect after you apply

• Screening call with Head of People & Business Operations
• Technical conversation with Co-founder/CEO
• Technical exercise with Co-founder/ Head of Engineering
• Final conversation with Co-founder/CEO
• References, then offer

In your application, tell us what you'd own here, and the hardest thing you've shipped in this domain.