Vista IT Solutions

Job Description Description About the Role : We are seeking an experienced Systems Administrator with strong expertise in cloud platforms, IT infrastructure, and cybersecurity. The role focuses on managing secure, scalable, and highly available systems across on-prem and cloud environments. The ideal candidate will proactively maintain infrastructure, strengthen security posture, and ensure business continuity through best-in-class operational practices. Key Responsibilities Cloud & Infrastructure Management : - Manage, monitor, and maintain cloud infrastructure (AWS / Azure / GCP). - Provision and administer compute, storage, networking, and IAM resources. - Ensure high availability, scalability, and cost optimization of infrastructure. - Support hybrid environments integrating on-premise and cloud systems. System Administration - Administer Linux and Windows servers, including installation, configuration, patching, and upgrades. - Manage virtualization platforms and container environments (VMware, Docker, Kubernetes). - Handle system performance tuning, capacity planning, and uptime monitoring. - Maintain system documentation, runbooks, and asset inventories. Cybersecurity & Compliance - Implement and manage security controls, firewalls, endpoint protection, and access policies. - Monitor systems for security incidents, vulnerabilities, and threats. - Conduct regular security audits, vulnerability assessments, and penetration testing support. - Ensure compliance with security standards and best practices (ISO 27001, SOC 2, CIS benchmarks, etc. - Manage backup, disaster recovery, and incident response processes. Network & Access Management - Configure and manage network services including DNS, DHCP, VPNs, load balancers, and firewalls. - Implement identity and access management (IAM), MFA, and least-privilege access controls. - Troubleshoot network connectivity and performance issues. Monitoring, Automation & Optimization - Implement monitoring, logging, and alerting solutions to ensure system reliability. - Automate routine tasks using scripts or infrastructure-as-code where applicable. - Proactively identify and resolve infrastructure and security risks. Collaboration & Support - Work closely with development, DevOps, and security teams to support application deployments. - Provide Level 2/3 infrastructure and security support. - Participate in on-call rotations and incident response activities. Experience Required Skills & Experience : - 4 - 6 years of hands-on experience as a Systems Administrator / Infrastructure Engineer / Cloud Administrator. Technical Skills - Strong experience with AWS, Azure, or GCP (at least one). - Proficiency in Linux and Windows system administration. - Hands-on experience with Docker and Kubernetes. - Solid understanding of networking concepts (TCP/IP, DNS, VPN, firewalls, load balancing). - Experience with backup, DR, and high availability architectures. Cybersecurity - Knowledge of cybersecurity principles, vulnerability management, and incident response. - Experience with security tools such as SIEM, EDR, antivirus, firewalls, IDS/IPS. - Understanding of IAM, MFA, encryption, and secure access controls. Good-to-Have Skills - Experience with Infrastructure as Code (Terraform, CloudFormation). - Scripting skills in Bash, Python, or PowerShell. - Familiarity with CI/CD pipelines and DevOps practices. - Security certifications such as CEH, Security+, CISSP, AWS Security Specialty (preferred). Educational Qualifications - Bachelors degree in Computer Science, IT, or a related field (preferred) (ref:hirist.tech)