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ARM CPU Subsystem Design Engineer

RenesasElectronics

Kodaira, , Japan permanent

Posted: April 2, 2026

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Quick Summary

Design ARM CPU subsystem for automotive applications, with a focus on performance, efficiency, and reliability.

Job Description

【Background of the Recruitment】

With the advancement of automotive electrification and intelligence, automotive SoCs have become a critical technology that shapes vehicle value.

The R-Car series has steadily evolved as a large‑scale, high‑function automotive SoC by integrating a wide variety of IPs, including CPU, memory, high‑speed interfaces, AI/video, functional safety, and security.

Our organization develops SoC IPs through a combination of in‑house IP development and the integration of third‑party IPs, with the CPU subsystem playing a central role in overall system performance.

Working on large‑scale and technically demanding SoC development provides opportunities to gain broad experience across design, verification, and architectural studies.

We welcome engineers who are eager to deepen their expertise through CPU subsystem development and grow into future technical leaders within our organization.

【Job Description】

• Contribute to the development of the CPU subsystem for automotive SoCs (R-Car series), covering key components such as CPU cores, cache architecture, memory‑related areas, and bus/interconnect logic.
• Participate in specification review, logic design, verification, debugging, and evaluation activities, taking responsibility for assigned development areas.
• Work on both in‑house IPs and third‑party IPs (e.g., CPU cores, cache or related components), including integration, parameter adjustment, and technical issue resolution.
• Take part in design reviews and defect analysis, providing technical input and supporting quality improvement of the overall subsystem.
• Collaborate with development teams in Japan, India, and Vietnam, contributing within a global, multi‑site development environment.

※The full details regarding your position scope as well as any future potential changes in work location and job scope will be provided during the interview process.

【MUST】

• Hands‑on experience in digital design or verification for SoC or IP development

(e.g., RTL design, verification, debugging, specification review, or design review support).
• Experience working with design specifications and technical documentation to carry out design and/or verification tasks.
• Ability to collaborate with engineers and stakeholders and address technical issues through discussion and analysis.
• Ability to read and write technical documents in English, or willingness to work in a global development environment using English.

【WANT】

• Experience in one or more of the following areas: CPU, cache architecture, memory‑related logic, or bus/interconnect design or verification.
• Experience with third‑party IP integration, including constraint clarification, configuration, or technical issue handling.
• Knowledge of power domain separation and physical implementation considerations (e.g., P&R).
• Experience in defect analysis, root‑cause investigation, and countermeasure discussion in SoC development.
• Experience with automotive SoCs or products requiring high levels of quality and reliability.
• Interest in expanding technical responsibility and contributing more broadly to subsystem‑level development over time.
• Japanese language proficiency at a conversational level

If you are interested in this position, please feel free to contact us at the details below:

Recruiter:Masana Ueno

ルネサスは、「To Make Our Lives Easier 」(人々の暮らしを楽“ラク”にする)というPurposeの下、組み込み半導体ソリューションを提供します。高品質とシステムレベルノウハウを兼ね備えた組み込み半導体のリーダーとして、自動車、産業、インフラ・IoT分野向けに、ハイパフォーマンスコンピューティング、組み込みプロセッシング、アナログ&コネクティビティ、そしてパワーを含めた幅広い製品ポートフォリオを軸とした、スケーラブルで包括的なソリューションを提供しています。

 

ルネサスは、30か国以上で22,000 人を超える多様性あふれる従業員と共に、限界に挑戦しながら、デジタライゼーションを通じてユーザエクスペリエンスを充実化させ、新たなイノベーションの時代を切り開いていきます。そして世界中の人々やコミュニティの未来のために、持続可能で省エネ効果の高いソリューションの開発に全力で取り組み、「To Make Our Lives Easier」を実現します。    

 

ルネサスで実現できること

 

• キャリアをスタート、そしてキャリアアップ:4つのプロダクトグループをはじめ、さまざまな部門において技術職として、また幅広いビジネスの経験を積むことができます。ハードウェア、ソフトウェアの専門知識を深めたり、新しいことにチャレンジしたりする機会があります。 

 
• やりがいとインパクトのある仕事をする: 革新的な製品とソリューションの開発に関わることにより、世界中のお客様のニーズに応えると同時に、人々の生活をより便利で安全かつ安心なものにすることに貢献できます。

 
• 「ウェルビーイング」に焦点を置いた環境で最大限に能力を発揮する:ルネサスでは、リモートワーク制度などによる柔軟な勤務体制づくり、また従業員リソースグループの積極的な活動をサポートするなど、インクルーシブな職場環境構築を目指しています。従業員を第一に考えたカルチャーとグローバルなサポート体制が、入社後すぐに活躍できる環境を提供します。 

 

自分の力で成功を掴み、キャリアを築く準備はできていますか? 

ルネサスで一緒に未来を形づくっていきましょう。

当社では、ハイブリッド勤務モデルを採用しており、従業員は週に2日間リモートワークを行うことができます。同時に、残りの日はチームとしてオフィスに集まり、協働を強化しています。出社指定日は火曜日から木曜日で、イノベーション、コラボレーション、そして継続的な学習に取り組む日としています。

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