• 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

• 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

• Ensure the availability, reliability, and performance of production systems, monitoring runtime behavior and participating in global on-call rotations following SRE best practices • Design, develop, and maintain automation tools, internal libraries, and infrastructure abstractions to improve resilience and reduce manual operational effort • Lead configuration, testing, security, and deployment activities using Infrastructure as Code, CI/CD pipelines, and cloud‑native technologies to guarantee consistent and secure deployments • Promote SDLC standards, DevOps practices, and operational excellence while collaborating with engineering teams across regions • Work with software engineers, project managers, and cross-functional partners in Brazil and globally, supporting system design, deployments, and ongoing operations • Mentor team members and contribute to technical interviews, strengthening technical capability and operational maturity • Continuously assess cloud infrastructure to identify performance bottlenecks, reliability risks, and optimization opportunities to improve scalability and manage costs