Modem Engineer (C/C++)

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 SoCsWork with baseband firmware, modem logs, and RF metrics to diagnose network and device issuesSupport 5G, LTE, VoLTE, IoT, and eSIM modem stacksPerform call flow, attach, handover, throughput, and latency analysis Device & Network Diagnostics:Interpret and analyze:RSRP, RSRQ, SINR, CQI, BLER, throughputAttach failures, PDP context, IMS registrationMobility, roaming, and network fallbackWork with modem telemetry pipelines feeding DMAT-style analytics platforms Firmware & OS IntegrationAndroid modem HALiOS baseband interfacesLinux-based embedded systemsOTA modem updatesCrash logsBaseband dumpsVendor debug tools (QPST, QXDM, MTK tools, Apple baseband logs) Carrier Network IntegrationValidate modem behavior against: carrier network profiles, APN, IMS, VoLTE, VoWiFi, 5G NSA/SA configurationsSupport network certification, testing, and performance tuning Production Support & EscalationSupport field escalations involving: Poor signal, Call drops, Data failures, Device-network mismatches.Work with OEMs, chipset vendors, and carrier teams to resolve root causes Required Technical Skills: Chipsets & ModemsQualcomm Snapdragon + X-Series modemsMediaTek Dimensity modem stacksApple Baseband/iOS modem stack Wireless Technologies5G NR (SA & NSA)LTE, VoLTE, VoWiFiIoT (NB-IoT, LTE-M)IMS, SIP, APN, eSIM Diagnostics & ToolsQXDM, QPST, MTK modem toolsBaseband log decodingRF & protocol analyzersAndroid/iOS modem logging Operating SystemsAndroidiOSEmbedded Linux Networking KnowledgeTCP/IP over cellularNetwork attach & session lifecycleCarrier core network interaction Preferred Skills:Experience working with carrier device labs Experience supporting large-scale device fleetsKnowledge of telemetry ingestion platforms Familiarity with OTA firmware pipelinesUnderstanding 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.GlobalLogic estimates the starting pay range for this role to be performed in Basking Ridge NJ, and the salary range will be $130,000/yr to $140,000/yr and reflects base salary only. This pay range is provided as a good faith estimate, and the amount offered may be higher or lower. GlobalLogic takes many factors into consideration in making an offer, including candidate qualifications, work experience, operational needs, travel and onsite requirements, internal peer equity, prevailing wage, responsibilities, and other market and business considerations.What We OfferExciting Projects: Come take your place at the forefront of digital transformation! With clients across all industries and sectors, we offer an opportunity to work on market-defining products using the latest technologies.Collaborative Environment: You can expand your skills by collaborating with a diverse team of highly talented people in an open, laidback environment — or even abroad in one of our global centers or client facilities!Work-Life Balance: GlobalLogic prioritizes work-life balance, which is why we offer flexible work schedules and opportunities to work from home.Professional Development: We provide continuing education classes, professional certification and training (technical, soft skills, language, and communication skills) to help you realize your professional goals. Being part of a global organization, there are additional learning opportunities through international knowledge exchanges.Excellent Benefits: We provide our employees with competitive salaries, health and life insurance, short-term and long-term disability insurance, flexible spending accounts, and PTO and holidays.About GlobalLogic: GlobalLogic is a leader in digital engineering. We help brands across the globe design and build innovative products, platforms, and digital experiences for the modern world. By integrating experience design, complex engineering, and data expertise—we help our clients imagine what’s possible, and accelerate their transition into tomorrow’s digital businesses. Headquartered in Silicon Valley, GlobalLogic operates design studios and engineering centers around the world, extending our deep expertise to customers in the automotive, communications, financial services, healthcare and life sciences, manufacturing, media and entertainment, semiconductor, and technology industries. GlobalLogic is a Hitachi Group Company operating under Hitachi, Ltd. (TSE: 6501) which contributes to a sustainable society with a higher quality of life by driving innovation through data and technology as the Social Innovation Business.