Job Advert Title: OT Security Engineer
Location: Nihonbashi, Tokyo
Division: DigitalX
Employment Class: Permanent
Description
【Purpose & Scope】
We are seeking a skilled and motivated Operational Technology (OT) Security Engineer who will oversee networks used for manufacturing operations and have the necessary operational knowledge to advise network changes, assuring continued network availability. The OT Network Security Engineer will support Site Focal Point with technical insight necessary according to policies and have a role in new system implementation.
【職務の内容 / Essential Job Responsibilities】
（雇入れ直後）
- Support the implementation of key network controls such as segmentation to isolate different parts of the OT environment, zoning to secure conduits for communication between zones and firewall management.
- Follow the change control processes to ensure that network changes are appropriate tested and approved without disruption to critical OT operations.
- Support the technical response to operational technology-related incidents, ensuring rapid resolution to minimize downtime and operational disruption.
- Harden devices such as switches, routers, firewalls by partnering and coordinating with the SMEs and global OT Security Team and other key stakeholders aligned to Astellas standards and proportionate to risk.
- Support the security of OT communication protocols by enabling encryption, authentication or using protocol-specific security enhancements where possible.
- Mitigate vulnerabilities that could lead to a breach of confidentiality, integrity, or availability across the OT networks.
- Work with the site team and vendors to identify & deploy security patches and updates for the OT network.
- Configure and maintain firewall rules and associated documentation tailored for OT networks.
- Support the implementation of cybersecurity measures specific to operational technology environments.
- Work with key technology and business stakeholders to ensure that network configurations and critical security appliances such as firewalls are backed up regularly and that recovery plans are in place in case of system failures, outages and/or cyber-attacks.
- Support operational technology compliance with internal security and risk management policies and practices, as well as external regulatory and statutory requirements.
- Collaborate with internal owners of security technologies such as antivirus, IDS/IPS, SIEM, endpoint detection & response, configuration management, privileged identify management, etc.
- Work closely with the site operations teams and MSPs to deliver cybersecurity risk reduction initiatives
- Stay up-to-date with industry trends, technologies, and best practices to continuously improve network infrastructure and security
（変更の範囲）
会社内での全ての業務
【Specific Physical or Environmental Requirements】
At Astellas we recognize the importance of work/life balance, and we are proud to offer a hybrid working solution allowing time to connect with colleagues at the office with the flexibility to also work from home. We believe this will optimize the most productive work environment for all employees to succeed and deliver. Hybrid work from certain locations may be permitted in accordance with Astellas’ Responsible Flexibility Guidelines.
【応募要件 / Qualifications】
＜必須 / Required＞
• Strong proficiency in written and verbal English and Japanese languages.
• In-depth understanding of network architecture to design, implement, and manage secure and efficient networks.
• Proficiency with cybersecurity tools (e.g., firewalls, intrusion detection/prevention systems) and techniques to protect network integrity and respond to security incidents.
• Strong ability to collaborate with cross-functional teams and communicate technical insights effectively to support secure file management and other security initiatives.
• Expertise in ensuring manufacturing adherence to OT security policies and standards. Skill in driving initiatives that support security, innovation, and efficiency within the manufacturing environment.
• Self-confident/assertive/dynamic/motivated behaviour & being able to work on multiple tasks/projects in parallel with supervision.
＜歓迎 / Preferred＞
• HNC or Degree Level in Computing, Engineering, Information Technology
• Experience in network engineering roles.
• Completed relevant network related certifications (CISSP, CompTIA Security+, GICSP and/or, ISA/IEC 62443) or equivalent.
• Basic knowledge of the IT/OT network principles
• Experience supporting systems/applications used in pharmaceutical, clinical, or related fields would be an asset.
• Experience in Cyber security risk reduction for IT/OT infrastructure.
• Familiar with cloud computing and security standards for cloud first environment.
【応募書類 / Application Documents】
和文履歴書・和文職務経歴書・英文レジュメ
Both Japanese and English Resumes are needed
【選考プロセス / Selection details】
書類選考 → 1次面接 → 2次面接 → 最終面接
※変更の可能性もございますので、予めご了承下さい。
CV screening → First interview → 2nd Interview → Final interview
*Please be advised that there might be a change in the process.
【勤務地 / Location】
（雇入れ直後）
東京都中央区 アステラス製薬 日本橋事業所 本社
Nihonbashi, Tokyo
（変更の範囲）
会社の定める事業場および自宅
【勤務開始日 / Start Date】
応相談
Will be decided according to the candidate's flexibility
【契約期間 / Contract Duration】
期間の定めなし
Not limited to specified period
【試用期間 / Probation Period】
試用期間原則なし
No probation period in principle
【給与 / Salary】
①基本給：当人の経歴・技術・技能等を考慮して決定
②裁量労働制の場合：裁量労働手当として職務グレードに応じて50,000～100,000円支給
③フレックスタイム制の場合：月間の所定労働時間を超えて勤務する時間に対して時間外勤務手当を支給
①Base salary: will be decided by the candidate's experience, skill and capability.
②When Discretionary Work System is applied: Discretionary work allowance will be paid.(50,000～100,000yen, based on the Grade)
③When Flextime System is applied: Overtime allowance will be paid for time worked in excess of prescribed working hours.
【昇給 / Salary Raise】
有り
【賞与 / Bonus】
有り
【諸手当 / Allowance】
裁量労働手当、住宅手当、通勤手当 等
Discretionary work allowance, Housing allowance, Commutation allowance, etc.
【勤務時間 / Working Hours】
8:45～17:45（月～木）、8:45～16:00（金）
裁量労働制の場合、所定労働時間を働いたものとみなす
8:45～17:45（Mon～Thu）、8:45～16:00（Fri）
Discretionary Work System
【休日 / Holidays】
完全週休２日制（土曜・日曜）、祝日、5月1日、夏季、年末年始
Weekends(Sat and Sun), holidays, May 1st, summer vacation, New Year holidays
【休暇 / Vacation Leave】
年次有給休暇、育児休業制度、介護休業制度 等
Annual paid leave, childcare leave system, nursing care leave system, etc.
【福利厚生 / Welfare】
雇用保険、労災保険、厚生年金、健康保険、共済会制度、社宅制度、持株会制度、財形貯蓄制度 等
Employment Insurance, Industrial Accident Compensation Insurance, Welfare Pension Insurance, Health Insurance, Mutual Aid Association System, Company Housing System, Employee Shareholder Association System, Property Accumulation Savings System
【アステラス製薬 採用サイト/ Career web site】
https://re-jp.astellas.com/jp/recruit/newgraduates/
For more information about Astellas, please visit our career web site.
"We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veteran status, or any other characteristic protected by law."