Modem & Chipset Systems Engineer

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.