Title: Modem & Chipset Systems Engineer (Qualcomm/MediaTek/Apple)
Location: Basking Ridge, NJ (3 day onsite/week)
Note: This is not a QA/Testing role, we require engineers with C/C++ development background. Please see we need the candidates to have development experience in C/C++ and Java/Kotlin or Swift/Obj-C and understanding of protocol stacks. The ideal candidates would have experience in parsing and decoding protocol packets in real time.
Job Description:
We are seeking a Modem & Chipset Systems Engineer with deep expertise in cellular modems, RF stacks, and SoC integration across Qualcomm, MediaTek, and Apple chipsets. This role will support device telemetry, network diagnostics, performance optimization, and firmware-level integration across carrier networks, including 5G, LTE, and NB-IoT platforms. This role bridges device hardware, modem firmware, and network systems, enabling reliable data ingestion, remote diagnostics, and performance tuning for large-scale connected-device platforms.
Key Responsibilities:
Modem & Chipset Engineering
Analyze, debug, and optimize modem behavior on Qualcomm, MediaTek, and Apple SoCs
Work with baseband firmware, modem logs, and RF metrics to diagnose network and device issues
Support 5G, LTE, VoLTE, IoT, and eSIM modem stacks
Perform call flow, attach, handover, throughput, and latency analysis
Device & Network Diagnostics
Interpret and analyze:
o RSRP, RSRQ, SINR, CQI, BLER, throughput
o Attach failures, PDP context, IMS registration
o Mobility, roaming, and network fallback
Work with modem telemetry pipelines feeding DMAT-style analytics platforms
Firmware & OS Integration
Work with:
o Android modem HAL
o iOS baseband interfaces
o Linux-based embedded systems
Support:
o OTA modem updates
o Crash logs
o Baseband dumps
o Vendor debug tools (QPST, QXDM, MTK tools, Apple baseband logs)
Carrier Network Integration
Validate modem behavior against:
o carrier network profiles
o APN, IMS, VoLTE, VoWiFi
o 5G NSA/SA configurations
Support network certification, testing, and performance tuning
Production Support & Escalation
Support field escalations involving:
o Poor signal
o Call drops
o Data failures
o Device-network mismatches
Work with OEMs, chipset vendors, and carrier teams to resolve root causes
Required Technical Skills:
Chipsets & Modems
Qualcomm Snapdragon + X-Series modems
MediaTek Dimensity modem stacks
Apple Baseband/iOS modem stack
Wireless Technologies
5G NR (SA & NSA)
LTE, VoLTE, VoWiFi
IoT (NB-IoT, LTE-M)
IMS, SIP, APN, eSIM
Diagnostics & Tools
QXDM, QPST, MTK modem tools
Baseband log decoding
RF & protocol analyzers
Android/iOS modem logging
Operating Systems
Android
iOS
Embedded Linux
Networking Knowledge
TCP/IP over cellular
Network attach & session lifecycle
Carrier core network interaction
Preferred Skills:
Experience working with carrier device labs
Experience supporting large-scale device fleets
Knowledge of telemetry ingestion platforms
Familiarity with OTA firmware pipelines
Understanding of device certification and carrier acceptance testing.
Education:
Bachelor's or Master's degree in Computer Science, Computer or Electrical Engineering, Mathematics, or a related field.
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