Infrastructure Engineer

Rakuten; London; On-site; GBP 45,000 - 65,000; Full time

Job summary

A global technology company in London is seeking a Systems Administrator with 4-6 years of experience in network and systems administration. This role involves managing hybrid software, supporting Windows and Linux-based systems, and ensuring seamless cloud integration. Ideal candidates hold a degree in IT or a related field. Strong skills in systems engineering and automation are essential. Enjoy a collaborative work environment focused on continuous improvement.

Qualifications

• 4-6 years of hands-on experience in network and systems administration.
• Strong understanding of system integration involving web, software, and hardware platforms.
• Experience with security best practices.

Responsibilities

• Manage software and web-based/SaaS products from concept through deployment.
• Administer Windows and Linux-based systems to ensure uptime.
• Support virtualization and hybrid cloud deployments.

Skills

Systems engineering

Network infrastructure

Automation

Cloud infrastructure (AWS, Azure, GCP)

Scripting (Python, Ansible, PowerShell, Bash)

Education

Bachelor's degree in IT, Computer Science, or related field

Tools

VMware

Hyper-V

Windows Server

Active Directory

Job description

RESPONSIBILITIES

• Manage hybrid software, hardware, and web-based/SaaS products from concept through final deployment and sustainment
• Administer and support Windows and/or Linux-based systems and integrations, ensuring consistent uptime and secure configuration
• Support virtualization environments (e.g., VMware, Hyper-V) and hybrid cloud deployments (e.g., Azure)
• Configure and troubleshoot Active Directory, DNS, DHCP, and GPOs
• Perform routine maintenance: patching, backups, log reviews, and system health checks
• Support configuration management and change control processes to ensure integrity of system baselines
• Design and implement system improvements and automation
• Monitor and respond to incidents, alerts, and user support requests
• Coordinate with cybersecurity, software, and helpdesk teams to ensure operational continuity
• Act as point of escalation for IT support and major incidents, working with vendors to resolve complex technical issues
• Provide subject matter expertise across multidisciplinary teams to ensure interoperability and system performance
• Document network/system configurations and standard operating procedures

MINIMUM REQUIREMENTS

• Proficiency in systems engineering, automation, and network infrastructure
• Strong understanding of system integration involving web, software, and hardware platforms
• Advanced system administration (Windows Server, Linux, Active Directory)
• Experience with cloud infrastructure (AWS, Azure, GCP)
• Proficiency in automation and scripting (Python, Ansible, PowerShell, Bash)
• Experience with security best practices (firewalls, IAM, patch management)
• Demonstrated knowledge and ability to administer enterprise systems such as Microsoft M365, Active Directory/Group Policy, and Okta
• Advanced understanding of various infrastructure and network technologies such as WAN/LAN, TCP/IP, DHCP, DNS, VPN, Windows Server operating systems
• Understanding of Disaster recovery and business continuity planning procedures

QUALIFICATIONS

• Bachelor's degree in Information Technology, Computer Science, or related field (or equivalent experience)
• 4-6 years of hands-on experience in network and systems administration
• Working knowledge of Windows Server, Active Directory, and basic networking principles
• Familiarity with virtualization technologies (VMware, Hyper-V) and system hardening practices
• Strong troubleshooting skills and the ability to work independently and as part of a team

Five Principles for Success

1. Always improve, Always Advance - Only be satisfied with complete success - Kaizen
2. Passionately Professional - Take an uncompromising approach to your work and be determined to be the best
3. Hypothesize - Practice - Validate – Shikumika - Use the Rakuten Cycle to succeed in unknown territory
4. Maximize Customer Satisfaction - The greatest satisfaction for our teams is seeing their customers smile
5. Speed!! Speed!! Speed!! - Always be conscious of time - take charge, set clear goals, and engage your team