• You will be joining the Infrastructure Team at Close. This team builds and maintains the platform that runs all Close systems (and do we have a lot of those). • Work with us and you’ll be working with: - Multi-terrabyte MongoDB, PostgreSQL, and Elasticsearch clusters - Telemetry systems built on Grafana’s LGTM stack and ClickHouse processing over 130 TB per month - Multiple Kubernetes clusters running tens of thousands of pods - Github Actions & ArgoCD powered CI/CD that can go from merged, to production, to rolled back in 10 minutes - A system that is stable, up to date, and hasn’t needed scheduled downtime in 4 years

• Design, develop, implement, and support infrastructure automation solutions using Infrastructure as Code and configuration management tools. • Provide operational support for global DevOps platforms and self-service automation, ensuring availability and performance. • Implement and maintain infrastructure security controls, including OS hardening, patching, and secure configurations. • Identify manual operational processes and develop automation solutions, maintaining and refactoring existing code. • Collaborate with cross-functional teams, adhere to change management and coding standards, and produce clear documentation to support alignment and knowledge sharing. • Ensure availability and reliability of production servers and applications by participating in on-call rotations.

• Develop a solid understanding of the current security landscape across a multi‑cloud environment (AWS and GCP). • Build relationships and understand interactions between system owners, engineering teams, and global security partners. • Take ownership of specific areas within the cloud security ecosystem and drive improvements. • Establish processes that ensure security is embedded throughout the engineering lifecycle (SSDLC). • Lead or contribute to automation initiatives across the organization to reduce manual work and increase consistency. • Implement and improve DevSecOps practices, embedding security controls into CI/CD and development workflows. • Work with security tooling to support scanning, hardening, monitoring, and policy enforcement. • Support cultural transformation, promoting a mindset of shared responsibility for security. • Collaborate closely with Development, DevOps/SRE, Infrastructure, TSSI, EGSO, Audit, and global security partners. • Operate independently with high ownership while contributing effectively across teams.

• Support the design, implementation, and improvement of security controls across AWS and GCP • Work closely with Development, DevOps/SRE, Infrastructure, and Security teams • Contribute to automation initiatives • Take ownership of specific areas of the security landscape • Assist in evaluating and operating security tools • Help document processes, workflows, and security standards • Collaborate with stakeholders