Principal Software Engineer at RenesasElectronics

Seniority in posting: senior

Language

Setup: On-site
Location: Tokyo
Type: Full-time
Level: mid
Posted: Sep 30, 2026

Description

Renesas is hiring an embedded software engineer to define requirements, create PRDs and architecture/design documents, and develop reusable embedded software for 16/32-bit MCUs, IoT, automotive, and connectivity products. The role covers BSP, device drivers, RTOS, middleware, OTA/FOTA, sample applications, testing, release management, technical leadership, and CI/CD, while requiring C-language embedded development experience and experience with MCU/SoC software, requirements definition, architecture, debugging, and stakeholder communication.

Required Skills

C programming
MCU/SoC software
Software architecture
Debugging
Technical communication
CI/CD

Additional Information

Required Previous Experiences: C-language embedded software development
MCU/SoC BSP, device driver, RTOS, middleware, or communication stack development
Software requirements definition, specification design, architecture design, and design review
Defect analysis, root-cause identification, corrective action planning, and quality improvement
Technical communication and stakeholder consensus building
Technical documentation, progress management, issue management, and release management
Independent learning and application of new technologies to product development
Preferred Qualifications: FreeRTOS, AzureRTOS, or Zephyr RTOS development, porting, or integration
Ethernet, Wi-Fi, TCP/IP, MQTT, or TLS software development
Bootloader, startup-time optimization, memory layout, or multi-OS design
Automotive, edge AI, or industrial embedded software development
Technical discussions, requirements adjustment, or customer/overseas partner seminars
Python, Shell, CI/CD, test automation, or development-process standardization
Small-team technical leadership or project management
AI-assisted code development, review, or testing
Translation Company Name: Renesas Electronics