At Yokogawa, we combine over 100 years of innovation with a modern, agile approach to delivering solutions that make a real difference. We’re building a culture of curiosity, inclusion, and excellence—helping industrial customers achieve a brighter, more secure future.

We are seeking an Operational Technology Engineer - Cyber Security to join Yokogawa's high-performing team based in our Sydney office. In this role, you will be essential in safeguarding industrial control systems (ICS) and operational technology (OT) networks across complex process environments. Your responsibilities will include designing and implementing secure network architectures that protect our customers' automation assets, ensuring reliability, safety, and peace of mind.

What you’ll do:

• Lead Cybersecurity Design & Architecture – Develop secure OT network architectures using defence-in-depth strategies, network segmentation, and secure remote access principles that balance performance, safety, and protection.
• Execute Engineering Solutions – Support the Lead Engineer in delivering cybersecurity tasks such as risk assessments, security control implementation, and ensuring compliance with client and industry requirements.
• Integrate Cybersecurity Across Projects – Work with project managers to embed cybersecurity into every project stage, from design and procurement through to configuration and delivery.
• Validate & Test Systems – Conduct cybersecurity-focused Factory and Site Acceptance Testing (FAT/SAT) to ensure secure configurations and compliance.
• Secure Commissioning & Deployment – Oversee on-site installations and commissioning to confirm secure deployment, proper network zoning, and verified protection tools.
• Harden & Protect Systems – Configure OT networks and IT systems with secure protocols, role-based access, patch management, and system hardening to minimise vulnerabilities.
• Manage Risk & Change – Control design changes with a cybersecurity focus, ensuring traceability, risk mitigation, and alignment with secure engineering practices.
• Be the Go-To Expert – Act as a trusted technical advisor, collaborating with global teams, sharing threat intelligence, supporting proposals, and guiding customers on cybersecurity best practices.

What you’ll bring:

• 3+ years of experience in cybersecurity in OT/ICS environments.
• Degree in computer engineering, chemical engineering or other relevant degree, or equivalent years of experience.
• Relevant cybersecurity certifications such as GICSP, CISSP, or ISA/IEC 62443 Cybersecurity Certificate
• Strong technical knowledge of Industrial Control Systems, including SCADA, DLC, PLC, SIS, and Operational Technology cybersecurity.
• Experience designing and implementing secure network solutions, including segmentation, access control, firewalls, and intrusion detection systems in an industrial environment.
• Familiarity with industry standards such as IEC 62443, NIST CSF, and AESCSF, along with the ability to apply them in practical, real-world settings.
• Hands-on understanding of industrial protocols such as Modbus, OPC, and PROFINET.
• Proficiency in network engineering – VLANs, firewalls, IDS/IPS, and DMZs
• Proactive, customer-focused mindset with a commitment to delivering high-quality, safe, and reliable outcomes.
• Strong collaboration and communication skills, with the ability to work effectively alongside multiple teams.
• Problem-solving approach, balancing security, safety, and operational performance in complex process environments.
• A genuine interest in continuous learning and contributing to a safer, smarter, and more secure industrial future.

Nice to Have:

• Experience in process automation or industrial networking in a similar industry.
• Knowledge of cloud integration, digital transformation, or IIoT security.

Why Yokogawa?

At Yokogawa, we’re driven by one purpose – to co-innovate tomorrow. With a global team of more than 18,000 across 60+ countries, we’ve been using technology and innovation to shape a smarter, safer, and more sustainable world.

Joining Yokogawa means being part of a company that truly values its people and the planet. We’re looking for passionate individuals who care about making a real impact – people who want their work to matter.

Here’s what you can look forward to:

• A supportive and inclusive workplace where collaboration, respect, and integrity aren’t just words – they’re how we operate every day.
• Exciting, high-impact projects across Australia and beyond, where your ideas and expertise make a real impact.
• A culture of growth – with ongoing learning, development, and clear career pathways designed to help you reach your full potential.
• A proud legacy of quality and innovation – we’re a trusted global leader in industrial automation and control solutions, offering full-lifecycle support to our customers.
• A strong safety focus and genuine appreciation for balance, wellbeing, and teamwork.

At Yokogawa, it’s not just a job and you won’t just build a career – you’ll help build a better future. If you’re ready to bring your expertise to the next level in a dynamic technical environment and support a team that values excellence and teamwork, we’d love to hear from you.

To be considered for this opportunity, you must have full working rights in Australia.

✨ Apply now and help shape the future of smarter, safer, and more sustainable industries with Yokogawa.

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Yokogawa is an Equal Opportunity Employer. Yokogawa wants a diverse, equitable and inclusive culture. We will actively recruit, develop, and promote people from a variety of backgrounds who differ in terms of experience, knowledge, thinking styles, perspective, cultural background, and socioeconomic status. We will not discriminate based on race, skin colour, age, sex, gender identity and expression, sexual orientation, religion, belief, political opinion, nationality, ethnicity, place of origin, disability, family relations or any other circumstances. Yokogawa values differences and enables everyone to belong, contribute, succeed, and demonstrate their full potential.