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Who We Are: At 4Refuel we believe that our people are our greatest asset. Were dedicated to fostering a vibrant workplace culture where every employee feels valued, engaged, and inspired to contribute their best. We are proud to have achieved an employee engagement score of 93%, paired with our superior safety culture, 4Refuel was recently awarded a prestigious WSIB honor, winning Canadas Best Health & Safety Culture. Great Place to Work, Canadas Safest Employers, and Best Workplaces for Women from a Great Place to Work Canada. The Cloud Infrastructure & Security Administrator safeguards, optimizes, and supports our cloud-based data center. The role spans computing operations, backup and disaster recovery, network and systems security engineering, vulnerability management, and end-user escalations while serving as the primary liaison to our manageddetection/response (MDR) partner. Design and support VPCs, security groups, VPNs, IAM roles, Systems Manager, CloudWatch alarms, and backups. Own AWS Backup, snapshots, cross-region replication, and test and document recovery procedures to meet RPO/RTO targets. Schedule, test, and deploy OS, application, and firmware patches across cloud and on-prem resources Coordinate maintenance windows with stakeholders, track compliance and report on patch status and aging. Security Operations & Incident Response Perform rootcause analysis and write post-incident reports. prioritize findings, schedule patching, track remediation through completion and report risk trends to leadership. Network & Cloud Security Engineering ~ Configure VPCs, security groups, NACLs, VPNs, and WAF rules, enforce CIS/AWS Well-Architected security controls and OShardening baselines. Provide Tier3 support for server, backup, and security issues Create knowledgebase articles and brief IT Service Desk on recurring problems, deliver occasional training for power users. Produce runbooks, diagrams, and training materials, track emerging AWS features, threat intel, and security frameworks to recommend platform improvements Network & Endpoint Security Ensure critical security logs and events (CloudTrail, Windows event logs, etc.) are collected, retained, and generate timely alerts that integrate into the security operations workflow 3 + years managing Windows Server 2016/2019/2022 ~ AWS SysOps Administrator Associate or AWS Security Specialty Microsoft Certified: Windows Server Hybrid Administrator Associate CompTIA Security+ or equivalent Technical Skills: PowerShell scripting for automation and remediation Solid grasp of TCP/IP, DNS, routing, and firewall fundamentals Integrating AWS workloads with Microsoft 365 security controls Exposure to container security (ECS/EKS) and imagescanning tools 4Refuel welcomes and encourages applications from people with disabilities. Accommodations are available on request for candidates taking part in all aspects of the selection process. We are committed to diversity at 4Refuel, to building and sustaining a diverse and inclusive workforce and as an equal opportunity employer we encourage applications from all qualified individuals. 4Refuel does not discriminate against applicants based on genders, races, national and ethnic origins, religions, ages, sexual orientation, marital and family status, and/or mental or physical disabilities. Job Type: Full-time