System administrator - REF19406O

  • Singapore
  • Full-time

Company Description

As the world's leader in digital payments technology, Visa's mission is to connect the world through the most creative, reliable and secure payment network - enabling individuals, businesses, and economies to thrive. Our advanced global processing network, VisaNet, provides secure and reliable payments around the world, and is capable of handling more than 65,000 transaction messages a second. The company's dedication to innovation drives the rapid growth of connected commerce on any device, and fuels the dream of a cashless future for everyone, everywhere. As the world moves from analog to digital, Visa is applying our brand, products, people, network and scale to reshape the future of commerce.

At Visa, your individuality fits right in. Working here gives you an opportunity to impact the world, invest in your career growth, and be part of an inclusive and diverse workplace. We are a global team of disruptors, trailblazers, innovators and risk-takers who are helping drive economic growth in even the most remote parts of the world, creatively moving the industry forward, and doing meaningful work that brings financial literacy and digital commerce to millions of unbanked and underserved consumers.

You're an Individual. We're the team for you. Together, let's transform the way the world pays.


Job Description

System Administrator is of an individual contributor responsible for applying skills and knowledge to perform specified support functions. As part of the team - will be responsible for supporting critical applications and ensure the stability of the applications by performing proactive maintenance activities, engage in automation activities, do root cause analysis and remediation. Knowledge of production support processes such as incident/change/problem management, call triaging, and escalation procedures.
Essential Job Functions and Responsibilities:

  • Installation, configuration, maintenance, and troubleshooting of Windows 2012  /2016 /2019 servers  including Core versions and related SOE software's

  • Administration of virtual environment  in  VMWare and Hyper-V environment

  • Security Remediation process (vulnerability assessment and patch management)

  • Administration of Microsoft System Center Configuration Manager (SCCM) for software updates & patches deployment

  • Identify automation/innovation opportunities in BAU environment and create tools/scripts to automate and schedule routine administration tasks

  • Will need some basic understanding of SAN and NAS storage environment

  • Basic to advanced support of converged environment comprising Unified Computing Environment (Cisco UCS) & Shared infrastructures (HP C7000 chassis enclosures)

  • Manage and support at least 2 of the following third party monitoring and automation tools: Netcool, Splunk, BMC Patrol, Blade Logic

  • Knowledge in HP Oneview, Dell OME

  • BAU operational support of Wintel infrastructure with sound knowledge of ITIL v3 processes such as Incident, Change, Problem and Release Management



  • Bachelor's degree in engineering, computer science or a related field is required. Post graduate degree a plus

  • Min 3-6 years' experience in windows system administration

  • Demonstrated experience in managing Enterprise Infrastructure systems including Microsoft technologies such as Active Directory, Clustering, SCCM, SCOM

  • Experience in administering medium to large scale virtualized environment utilizing VMware  and Hyper-V

  • Strong understanding of networking concepts like TCP/IP, DNS and DHCP

  • Advanced knowledge in MS  tools  such as SCOM and SCORCH
  • Familiarity with SAN and NAS storage in Windows Server environment

  • Exposure in Unified Computing Environment (Cisco UCS) & Shared infrastructures (HP C7000 chassis enclosures ,Dell)

  • Hardware monitoring tools such as HP Oneview, Dell OME

  • Basic understanding of ITIL v3 processes such as Incident, Change, Problem and Release Management

  • Excellent communication skills with ability to interact with management & technical subject matter experts

  • Strong knowledge and experience in Scripting (PowerShell, VBscript, Batch, etc...)

  • Good understanding /working knowledge in Cloud technologies.

Additional Information

Required Skills

  • Operating Systems Administrations Skill: Windows 2012 /2016 /2019

  • Virtualization Administration: VMware ESX, Hyper - V

  • Server system: HP, DELL, UCS

  • Strong expertise of automation technologies including scripting, PowerShell, Power CLI ,VBScript

  • Monitoring, Tuning, Troubleshooting, and root cause analysis

  • Maintains expertise across multiple infrastructure domains

  • Strong organization and analysis skills

  • Strong focus on quality and customer service

  • Must be able to multitask and prioritize work

  • Strong analytical and practical problem solving skills

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