Senior Cloud Security Engineering Lead
- Greece-Thessaloniki Chortiatis
ROLE SUMMARY
At the heart of Pfizer's Digital transformation sits Global Cloud Services, enabling modern cloud infrastructure and engineering capabilities that influence business outcomes and provide value to our business, shareholders, and patients every day.
We are seeking a Senior Cloud Security Engineering Lead to join our growing team. This role requires a strategic technical leader proficient in securing multi-cloud environments, with a strong emphasis on security engineering, automation, and infrastructure as code. The role owns the engineering, hardening and reliability of the cloud platforms that host Pfizer's core cyber security applications, and leads the adoption of AI and agentic security tooling across the estate.
The ideal candidate brings deep expertise in at least one major cloud platform (AWS, GCP, or Azure), a hands-on approach using modern engineering practices, and a proven track record in leading and mentoring technical teams.
Pfizer seeks individuals that are highly self-motivated, eager to learn, and effective when working in a team environment. A strong aptitude towards self-development, continuous learning, and growth is highly desired.
ROLE RESPONSIBILITIES
The Senior Cloud Security Engineering Lead provides technical leadership and design expertise for the secure engineering of Pfizer's multi-cloud estate, and leads a small technical team of 3-5 cloud security engineers, providing guidance, mentorship and support in their professional development.
Security Engineering & Architecture
Lead the design, implementation and management of multi-cloud security solutions focusing on preventative controls, scalability and automation.
Own cloud security reference architectures, guardrails and landing zone controls across AWS, Azure and GCP.
Design and architect standards for secure deployment and management of multi-cloud infrastructure, embedding security into platform patterns rather than bolting it on.
Drive the adoption of policy-as-code and Infrastructure as Code security using Terraform, OpenTofu, Spacelift and Python.
Platform Automation & Detection Engineering
Lead automation of security control deployment, posture remediation, and evidence collection across the cloud estate.
Own detection engineering, logging pipelines and observability for cloud security telemetry at enterprise scale.
Serve as escalation point for cloud security operational issues and lead root cause analysis for significant incidents.
Leadership & Collaboration
Manage and mentor a team of 3-5 cloud security engineers, providing technical leadership, coaching and career development.
Partner with Cyber Security, Risk, Compliance and Architecture teams to support audits, GxP and regulatory requirements, and governance initiatives.
Collaborate with global cloud engineers, developers and product teams to build secure-by-default cloud-native capabilities.
Ensure continuous improvement initiatives are identified, prioritized and addressed within the cloud security environment.
Stay ahead of cloud security threats, technologies and engineering practices, and set the direction for their adoption.
Cyber Security Applications & Platforms in Scope
The role engineers, secures and operates the cloud infrastructure underpinning Pfizer's core cyber security application estate, including:
Ping - enterprise identity and access management / federation and single sign-on.
SailPoint - identity governance and administration, access certification and lifecycle management.
CyberArk (Palo Alto Idira) - privileged access management, secrets management and credential vaulting.
CrowdStrike Amazon EKS - large-scale security log ingestion, retention and threat hunting.
Cutting-Edge & Agentic Cloud Security Capabilities
This role sits at the front edge of AI-enabled security engineering. You will work with, evaluate, and operationalize emerging agentic capabilities that are reshaping how cloud security is delivered, including:
Developer-embedded secret and credential protection - preventing credentials and secrets from ever reaching a repository, using GitHub Advanced Security (GHAS) push protection, secret scanning, code scanning and dependency review.
Autonomous security agents for offensive testing - agent-driven penetration testing (black-box against external cloud estates and white-box against our own accounts) and continuous AI-assisted source code security review.
AI red team and blue team agents within our cloud-native application protection tooling - using agentic red teaming to continuously probe cloud configurations and workloads, and blue team agents to accelerate detection, triage and response.
AI-assisted vulnerability remediation - evaluating and adopting emerging code-repair models that generate and validate security fixes rather than only reporting findings.
Hyperscaler-native security agents - early access and alpha programs from AWS, Microsoft and Google that bring agentic reasoning to cloud security posture, threat detection and automated remediation.
Agentic security engineering at scale - building the guardrails, evaluation harnesses, and human-in-the-loop controls that let autonomous agents operate safely against a regulated, global pharmaceutical cloud estate.
BASIC QUALIFICATIONS
Bachelor's Degree in Information Technology, Computer Science, Computer Engineering, or a similar discipline.
6+ years of experience in cloud engineering, cloud security or infrastructure roles.
At least 2 years of experience in a technical leadership role, managing or leading engineering teams.
Deep expertise in at least one major cloud platform (AWS, GCP, or Azure) with demonstrated familiarity across multiple cloud providers.
Strong experience building and deploying cloud infrastructure using industry-standard IaC tools such as Terraform, OpenTofu, or Pulumi.
Strong command of cloud security fundamentals: identity and access management, network security, encryption and key management, workload and container security, and logging/monitoring.
Proficiency in at least one major programming language (Python strongly preferred) for security automation and tooling.
Experience securing or operating enterprise security platforms such as IAM/SSO, identity governance, privileged access management, or SIEM/log analytics.
Excellent communicator with the ability to influence horizontally and vertically across a large, complex, and matrixed organization.
Strong technical leadership capabilities including the ability to coach, mentor, and develop other engineers.
Customer-centric mentality with a bias towards delivering value at the speed demanded by the business.
Demonstrated experience in an agile work environment possessing qualities such as a collaborative mindset, adaptability to change, and a proactive problem-solving approach.
PREFERRED QUALIFICATIONS
Multi-cloud security experience across AWS, GCP, and Azure.
Hands-on experience with Kubernetes / EKS security at scale.
Experience with CNAPP / CSPM tooling and with GitHub Advanced Security or equivalent application security tooling.
Experience applying AI or agentic tooling to security engineering problems.
Experience qualifying cloud services capabilities for use within GxP or other highly regulated environments.
Experience with Spacelift or similar IaC automation platforms.
Relevant certifications (AWS/Azure/GCP Security Specialty, CISSP, CCSP, OSCP, or equivalent).
Curious, self-driven and committed to continuous skill development, particularly around emerging AI security capabilities.
Strong problem-solving and analytical mindset, especially for complex cloud systems.
Comfortable operating with high ownership and autonomy.
Customer-focused mindset with the ability to balance engineering excellence, security and business outcomes.
Please apply by sending your CV in English.
Work Location Assignment: Hybrid
Purpose
Breakthroughs that change patients' lives... At Pfizer we are a patient centric company, guided by our four values: courage, joy, equity and excellence. Our breakthrough culture lends itself to our dedication to transforming millions of lives.
Digital Transformation Strategy
One bold way we are achieving our purpose is through our company wide digital transformation strategy. We are leading the way in adopting new data, modelling and automated solutions to further digitize and accelerate drug discovery and development with the aim of enhancing health outcomes and the patient experience.
Flexibility
We aim to create a trusting, flexible workplace culture which encourages employees to achieve work life harmony, attracts talent and enables everyone to be their best working self. Let’s start the conversation!
Equal Employment Opportunity
We believe that a diverse and inclusive workforce is crucial to building a successful business. As an employer, Pfizer is committed to celebrating this, in all its forms – allowing for us to be as diverse as the patients and communities we serve. Together, we continue to build a culture that encourages, supports and empowers our employees.
Disability Inclusion
Our mission is unleashing the power of all our people and we are proud to be a disability inclusive employer, ensuring equal employment opportunities for all candidates. We encourage you to put your best self forward with the knowledge and trust that we will make any reasonable adjustments to support your application and future career. Your journey with Pfizer starts here!
To learn more about acceptable and prohibited uses of AI during the recruitment process, please review our candidate AI-use guidelines available on Pfizer Careers.

Information & Business TechBreakthroughs that change patients’ lives
Research confirms what intuition tells us: that purpose-driven companies perform better, are more innovative, attract and retain the best people, and know how to unleash the power of those people. Pfizer’s purpose—Breakthroughs that change patients' lives—fuels everything we do and reflects our passion for building on our legacy as one of the greatest contributors of good to the world.
Each word in our purpose has meaning and reflects the value we strive to bring to patients and society:
“Breakthroughs” - These are the innovations, scientific and commercial, that we seek to deliver every day. All colleagues, regardless of role, level or location, strive for breakthroughs every day.
“Change” - We want to do more than simply improve patients’ medical conditions; we want to dramatically change their lives for the better.
“Patients’ lives” - We consider not only patients, but everyone they touch—including their families, caregivers, and friends—and everything they love to do. It’s an intentionally holistic view.
Our purpose ensures that patients remain at the center of all we do. We live our purpose by sourcing the best science in the world; partnering with others in the healthcare system to improve access to our medicines; using digital technologies to enhance our drug discovery and development, as well as patient outcomes; and leading the conversation to advocate for pro-innovation/pro-patient policies.
Every decision we make and every action we take is done with the patient in mind—and to nurture an environment where breakthroughs can thrive.
Our Values
To fully realize Pfizer’s purpose, we have established a clear set of expectations regarding “what” we need to achieve for patients and “how” we will go about achieving those goals.
The “how” is represented by four simple, powerful values—courage, excellence, equity, and joy—that define our company and our culture.
Courage: Breakthroughs start by challenging convention, especially in the face of uncertainty or adversity. This happens when we think big, speak up, and are decisive.
Excellence: We can only change patients’ lives when we perform at our best together. This happens when we focus on what matters, agree who does what, and measure our outcomes.
Equity: We believe that every person deserves to be seen, heard, and cared for. This happens when we are inclusive, act with integrity, and reduce healthcare disparities.
Joy: We give ourselves to our work, but it also gives to us. We find joy when we take pride, recognize one another, and have fun.
Pfizer Digital
Pfizer Digital takes immense pride in being at the forefront of innovation, harnessing cutting-edge smart technology that profoundly impacts the lives of our patients.
With the transformative potential of digital solutions, we revolutionize how we discover, develop, and deliver medicines, enabling us to achieve breakthroughs faster and more efficiently.
By streamlining and automating transactional processes, we create valuable time and resources, empowering our talented team to focus on meaningful work that truly makes a difference in healthcare and beyond.
Benefits at Pfizer
Pfizer offers competitive compensation and benefits programs designed to meet the diverse needs of our colleagues. Our Pay for Performance Philosophy and Practices reward colleagues based on the contributions they make to our business.
Our Competitive Benefits Programs help our colleagues by:
- Promoting Health and Wellness to help colleagues maintain and improve their physical and mental wellbeing. Pfizer offerings include health and disability insurance, preventative health programs, medical screenings, free or reduced-cost vaccinations, discounts on Pfizer products, mental health support, nutrition and fitness counseling and more.
- Strengthening Colleagues’ Financial Security by providing company contributions to retirement plans, life insurance and financial planning education to help colleagues achieve their financial goals.
- Providing Benefits and Time off for the Moments that Matter to ensure Pfizer colleagues have the time away from the office to recharge, recover and return to work as the best version of themselves. Vacation, Holiday time and Sick time are just the beginning, with a 12 week parental leave policy for both parents of a new born, 10 day of caregiver leave for those times when your family needs you whether it’s a child, spouse or parent, bereavement leave, and additional country-specific programs.
- And so much more, depending on your country and site, Pfizer offers childcare facilities or discount programs, on-site health and/or fitness centers, movement and mindfulness solutions, “Log in for your Day” work flexibility and so much more.
For U.S. based jobs, view an overview of Pfizer’s U.S. benefits program (opens in a new window)