Sr Cybersecurity Engineer

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The Company

Dexcom Corporation (NASDAQ DXCM) is a pioneer and global leader in continuous glucose monitoring (CGM). Dexcom began as a small company with a big dream: To forever change how diabetes is managed. To unlock information and insights that drive better health outcomes. Here we are 25 years later, having pioneered an industry. And we're just getting started. We are broadening our vision beyond diabetes to empower people to take control of health. That means personalized, actionable insights aimed at solving important health challenges. To continue what we've started: Improving human health.

The Company

Dexcom Corporation (NASDAQ DXCM) is a pioneer and global leader in continuous glucose monitoring (CGM). Dexcom began as a small company with a big dream: To forever change how diabetes is managed. To unlock information and insights that drive better health outcomes. Here we are 25 years later, having pioneered an industry. And we're just getting started. We are broadening our vision beyond diabetes to empower people to take control of health. That means personalized, actionable insights aimed at solving important health challenges. To continue what we've started: Improving human health.

We are driven by thousands of ambitious, passionate people worldwide who are willing to fight like warriors to earn the trust of our customers by listening, serving with integrity, thinking big, and being dependable. We've already changed millions of lives and we're ready to change millions more. Our future ambition is to become a leading consumer health technology company while continuing to develop solutions for serious health conditions. We'll get there by constantly reinventing unique biosensing-technology experiences. Though we've come a long way from our small company days, our dreams are bigger than ever. The opportunity to improve health on a global scale stands before us.

Meet The Team

Our IT team, bolstered by a global presence and reach, is dedicated to developing and implementing Dexcom's technology strategy. We provide robust solutions designed to future-proof the entire lifecycle of our IT operations. By leveraging cutting-edge hardware and software technologies, we ensure seamless integration of our systems and solutions within the organisation. This integration is pivotal in enabling optimal operational efficiency and enhancing business performance.

Our team is committed to staying at the forefront of technological advancements, continuously exploring innovative solutions to meet the evolving needs of the organisation. We collaborate closely with various departments to understand their unique challenges and requirements, ensuring that our IT infrastructure supports and enhances their operations.

In addition to our technical expertise, we prioritise security and compliance, implementing best practices to safeguard our systems and data. Our proactive approach to IT management ensures that we are prepared to address any potential issues swiftly and effectively, minimizing downtime and maintaining business continuity.

Through our global reach and strategic partnerships, we are able to provide comprehensive support and services, ensuring that Dexcom remains agile and competitive in a rapidly changing digital landscape. Our commitment to excellence drives us to deliver high-quality solutions that not only meet but exceed the expectations of our stakeholders.

As a Cybersecurity Engineer focused on Operational Technology (OT) and Contract Manufacturing (CM), you will play a key role in protecting the integrity, availability, and confidentiality of Dexcom's manufacturing environments. Based at our new state-of-the-art facility in Athenry, Ireland, you will design, implement, and maintain cybersecurity controls across OT systems and collaborate closely with both internal teams and external CM partners. You'll support security initiatives during equipment onboarding, network segmentation, incident response, and compliance assessments to uphold Dexcom's security posture throughout the supply chain. This is a hands-on, cross-functional role that sits at the intersection of cybersecurity, manufacturing, and global operations.

Where You Come In

• Typically requires a Bachelor's degree in Cybersecurity, IT, MIS, or a related field , and a minimum of 5-8 years related experience or Master's degree and 2-5 years equivalent industry experience or a PhD and 0-2 years experience.
• Support and implement cybersecurity controls across our Athenry facility, ensuring alignment with Dexcom's global Information Security OT standards.
• Partner with Manufacturing, Engineering, and IT teams to ensure the secure deployment of equipment and systems.
• Assist in implementing and monitoring cybersecurity controls for CM partners, including onboarding, technical assessments, and remediation tracking.
• Maintain network segmentation and firewall rule sets for OT environments, minimizing exposure to IT systems and external threats.
• Monitor and respond to security alerts within OT systems, supporting incident investigation and triage.
• Conduct risk assessments and assist with audits related to OT and CM cybersecurity.
• Collaborate with global Information Security and Infrastructure teams on new technology deployments and changes to the security posture.
  
  

What Makes You Successful

• You have experience securing ICS, SCADA, or other OT/IIoT platforms in manufacturing or industrial environments.
• You understand network segmentation and firewall architecture as applied in OT contexts.
• You are familiar with cybersecurity frameworks such as NIST 800-82 and IEC 62443.
• You've supported cybersecurity assessments, vendor security reviews, and remediation efforts in manufacturing environments.
• You collaborate effectively across teams—including Engineering, IT, and external partners—to solve complex security challenges.
• You have experience with tools such as firewalls, vulnerability scanners, endpoint protection, and configuration management solutions.
• You are comfortable working in regulated environments (e.g., FDA, ISO) and understand the importance of maintaining compliance.
• You are detail-oriented, highly organized, and skilled at documenting technical processes and system configurations.
  
  

What You'll Get

• A front row seat to life changing CGM technology. Learn about our brave #dexcomwarriors community .
• A full and comprehensive benefits program.
• Growth opportunities on a global scale.
• Access to career development through in-house learning programs and/or qualified tuition reimbursement.
• An exciting and innovative, industry-leading organization committed to our employees, customers, and the communities we serve.
  
  

Travel Required

• 20% initially, reducing to 10% in 2026
  
  

To all Staffing and Recruiting Agencies: Our Careers Site is only for individuals seeking a job at Dexcom. Only authorized staffing and recruiting agencies may use this site or to submit profiles, applications or resumes on specific requisitions. Dexcom does not accept unsolicited resumes or applications from agencies. Please do not forward resumes to the Talent Acquisition team, Dexcom employees or any other company location. Dexcom is not responsible for any fees related to unsolicited resumes/applications.Seniority level

• Seniority levelNot Applicable

Employment type

• Employment typeFull-time

Job function

• Job functionInformation Technology
• IndustriesMedical Equipment Manufacturing

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Athenry, County Galway, Ireland 3 weeks ago

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