CareerPlan

Modem Systems Test Engineer - Wireless Technologies and Ecosystems

Minato, JapanFull-time2026-10-05 → 2026-11-10

Core

Own the end-to-end test lifecycle for key cellular features across LTE, 5G NR, and future standards, driving root-cause analysis on complex baseband software and firmware issues.

Role type

Senior IC modem systems test engineer (wireless technologies)

Builds

Wireless modem features and carrier conformance for Apple devices

Domain

Telecommunications / Wireless / Cellular

Deliverable

production ML models

Required skills

Cellular modem/wireless system testing, interoperability testing, protocol validation, carrier acceptance, 3GPP specifications knowledge, test automation and scripting, protocol log analysis, RF capture analysis, baseband firmware debugging, cross-functional collaboration

Preferred skills

Python coding, wireless test equipment operation (Anritsu, Rohde & Schwarz, Keysight), AI/ML model development for automated test execution and log parsing

Technologies

LTE, 5G NR, 3GPP, Python, Anritsu, Rohde & Schwarz, Keysight, AI/ML

Responsibilities

Define, develop, and execute system-level test plans evaluating 4G/5G and emerging standards; Translate complex operator specifications into actionable test plans; Analyze protocol traces, RF captures, and diagnostic logs to isolate defects; Partner with Baseband Software, Firmware, Systems Engineering, RF, Carrier Engineering, and Regulatory teams; Leverage AI/ML to develop custom tooling/dashboards/automation frameworks

Seniority

Senior, hands-on IC