Hybrid Cloud Systems Administrator — Linux, AWS & Automation

Paysend; Greater London; On-site; GBP 55,000 - 85,000; Full time

Job summary

Paysend is seeking a System Administrator to install, configure, and maintain our IT infrastructure across hybrid on-premises and cloud environments. You will manage Linux-based systems (~70%) and Windows (~30%), provisioning, patching, and troubleshooting while leveraging automation for consistency and security.

You will design and operate infrastructure in AWS and GCP, build IaC with Terraform and Ansible, and develop automation scripts in Bash, Python, or PowerShell.

Qualifications

• Strong hands-on experience with Linux system administration in production environments.
• Experience managing hybrid infrastructure (on-premises + cloud).
• Proven experience with AWS (EC2, VPC, IAM, S3, CloudWatch).
• Hands-on experience with Terraform and/or Ansible for infrastructure automation.
• Solid understanding of networking fundamentals (TCP/IP, DNS, VPNs, load balancing).
• Experience working with physical and virtual servers, including provisioning and troubleshooting.
• Experience with virtualization platforms (VMware, EC2, Compute Engine).
• Scripting experience using Bash, Python, or PowerShell.
• Experience with monitoring and observability tools (CloudWatch, Prometheus, Grafana, Zabbix).
• Strong understanding of security best practices, IAM, and access control.
• Experience with backup and disaster recovery solutions (Veeam, AWS Backup, GCP Backup,DR).

Responsibilities

• Deploy and manage software, user access, and system configurations across a hybrid infrastructure, leveraging automation to ensure consistency, security, and scalability
• Administer and maintain Linux-based systems across on-premises and cloud environments (~70% of the environment), including provisioning, patching, performance tuning, and troubleshooting
• Support Windows environments (~30%), including core services such as Active Directory, DNS, RDS, and Group Policy
• Design, deploy, and manage infrastructure in AWS (primary cloud) including EC2, VPC, IAM, S3, and CloudWatch
• Support and maintain infrastructure in GCP environments (Compute Engine, Cloud Storage, IAM), as part of a multi-cloud setup
• Build and maintain infrastructure as code using Terraform and automate configuration management using Ansible
• Develop and maintain automation scripts using Bash, Python, or PowerShell
• Manage virtualisation platforms (VMware, EC2, Compute Engine) and support both physical and virtual servers (HP Proliant, HP MSA)
• Administer and maintain storage systems including SAN/NAS and cloud storage (S3, EBS, Google Cloud Storage, Filestore)
• Configure and troubleshoot networking components across cloud and on-prem environments, including VPCs, VPNs, load balancers, DNS, and firewalls
• Work with enterprise networking and security equipment (Cisco, Arista, Fortinet, Palo Alto, Juniper, Forcepoint)
• Implement and maintain monitoring and observability solutions (CloudWatch, Prometheus, Grafana, Zabbix) to ensure system health and performance
• Ensure backup, disaster recovery, and data protection strategies are in place and operational (Veeam, AWS Backup, GCP Backup and DR)
• Enforce security best practices, IAM policies, and compliance standards across hybrid and multi-cloud infrastructure
• Collaborate with DevOps, Security, Monitoring, and DBA teams to ensure reliable and scalable system operations
• Maintain clear and up-to-date documentation of systems, processes, and configurations (CMDB)

Skills

Linux admin

Hybrid infra

Networking fundamentals

Scripting Bash/Python/PowerShell

Security best practices

Tools

Terraform

Ansible

VMware

AWS EC2

Job description

Paysend is seeking a System Administrator to install, configure, and maintain our IT infrastructure across hybrid on-premises and cloud environments. You will manage Linux-based systems (~70%) and Windows (~30%), provisioning, patching, and troubleshooting while leveraging automation for consistency and security.

You will design and operate infrastructure in AWS and GCP, build IaC with Terraform and Ansible, and develop automation scripts in Bash, Python, or PowerShell.