Sr. Cloud Security Engineer (devsecops, Terraform)

Senior Security Engineer

Proofpoint is a leading cybersecurity company protecting organizations' greatest assets and biggest risks: vulnerabilities in people. With an integrated suite of cloud-based solutions, Proofpoint helps companies around the world stop targeted threats, safeguard their data, and make their users more resilient against cyber-attacks. Leading organizations of all sizes, including more than half of the Fortune 1000, rely on Proofpoint for people-centric security and compliance solutions mitigating their most critical risks across email, the cloud, social media, and the web.

The Role

We are looking for a highly skilled and experienced Senior Security Engineer with a strong focus on Cloud/Data Centre Security Automation and DevSecOps to join our Security Engineering team.

In this role, you will lead initiatives to design, build, and scale cloud/data centre security automation from first principles, enabling secure-by-default infrastructure and secure software delivery pipelines. You will also bring deep hands-on experience with tools such as Tenable, Wiz, Veracode, Splunk and apply your expertise in scripting, infrastructure-as-code (IaC), and cloud-native security practices to improve posture, visibility, and response.

Based in Cork, Ireland this key role will drive key Cloud/Data Centre security initiatives for Proofpoint Product portfolio. This role offers a unique opportunity to own security automation strategy, shape DevSecOps pipelines, and influence the future of scalable security tooling in a fast-moving engineering environment.

Key Responsibilities

• Design and build automated cloud security controls using Terraform, CI/CD, and scripting (Python, Go)
• Develop and scale infrastructure-as-code (IaC) security validation pipelines
• Integrate and manage platform such as Tenable, Wiz, Veracode, Splunk etc. to orchestrate and automate security scans across infrastructure and application layers
• Architect, build, and maintain security data pipelines to ingest, normalize, and analyze telemetry at scale
• Build and support tools for asset inventory management, EDR deployment at scale, and compliance-driven discovery
• Develop custom logic for automating remediation and enrichment of scan results
• Collaborate with Engineering, DevOps, and GRC teams to integrate security controls into the SDLC and cloud deployments
• Lead or contribute to threat modelling, risk assessments, and architecture reviews

What You Bring to the Team

• Extensive experience in Security Engineering, Cloud Security, or DevSecOps roles
• Thorough understanding of AWS, Azure, or GCP security models, IAM, and threat surfaces
• Proven ability to build cloud-native security automation using Terraform (IaC), CI/CD tools and pipelines, Python/Go/Bash
• Compliance knowledge with a grasp of NIST 800-53, and other regulatory frameworks
• Experience building Enterprise-scale Asset management systems or platforms, EDR tooling deployment at scale, Security data pipelines and analytics frameworks
• Experience with API-based integrations, webhooks, event-driven security automation
• Excellent communication and collaboration skills with the ability to drive cross-functional initiatives

Beneficial Experience

• Experience with SIEMs, SOAR, or threat intel platforms
• Experience with container security (e.g., Docker, Kubernetes, Falco, Trivy)
• Familiarity with Secret Management (Vault, AWS Secrets Manager)
• Exposure to managing Network IPS/IDS systems (such as Stamus/Suricata)
• Exposure to compliance programs such as FedRAMP, SOC 2, or PCI-DSS
• Certifications: CISSP, CSSLP, GWAPT, or equivalent are a plus

Protecting people is at the heart of our award-winning lineup of cybersecurity solutions, and the people who work here are the key to our success. We're a customer-focused and a driven-to-win organization with leading-edge products. We are an inclusive, diverse, multinational company that believes in culture fit, but more importantly 'culture-add', and we strongly encourage people from all walks of life to apply. We believe in hiring the best and the brightest to help cultivate our culture of collaboration and appreciation. Apply today and explore your future at Proofpoint! #LifeAtProofpoint