Senior Unix/Linux Systems Administrator

  • Full-time
  • Job Family Group: Technology and Operations

Company Description

Common Purpose, Uncommon Opportunity. Everyone at Visa works with one goal in mind – making sure that Visa is the best way to pay and be paid, for everyone everywhere. This is our global vision and the common purpose that unites the entire Visa team. As a global payments technology company, tech is at the heart of what we do: Our VisaNet network processes over 13,000 transactions per second for people and businesses around the world, enabling them to use digital currency instead of cash and checks. We are also global advocates for financial inclusion, working with partners around the world to help those who lack access to financial services join the global economy. Visa’s sponsorships, including the Olympics and FIFA™ World Cup, celebrate teamwork, diversity, and excellence throughout the world. If you have a passion to make a difference in the lives of people around the world, Visa offers an uncommon opportunity to build a strong, thriving career. Visa is fueled by our team of talented employees who continuously raise the bar on delivering the convenience and security of digital currency to people all over the world. Join our team and find out how Visa is everywhere you want to be.

Job Description

​ The Sr. Systems Administrator responsible for providing support to critical customer facing applications. The position requires applying root cause operation break fixes and other enthusiastic maintenance activities to keep the application up and running 24x7. This is a professional level position and requires strong execution and analytical abilities. This position is expected to interact with Systems, Database personnel, Engineering, Product Development, Clients, Risk and various groups within Technology. Success will enjoy strong Linux/Unix, communication and analytical skills.

Key Responsibilities

  • Responsible for the ongoing maintenance, security and availability of several applications based on business requirements and adhering to tight operations, security, and procedural models
  • This position requires a dynamic, hard-working and ambitious individual, with excellent oral and written communication skills
  • Assist in change management processes
  • Improve the efficiency and help standardize current processes
  • Document and thoroughly understand the application architecture, system configuration across platforms and work with various systems and use this knowledge effectively to resolve issues
  • You will work closely with customer support team to communicate the root cause of the outage, duration and recommendations or steps to resolve issues
  • Participate in Service Improvement meetings after an application outage
  • Respond to general inquiries
  • Provide assistance as required in analyzing the trends and suggesting long-term and short-term improvements
  • Resolve incidents and problems in accordance within defined guidelines and meet operational level agreements
  • Implement change requests and meet project deliverables
  • You achieve and understand Service Level commitments
  • Ability to work after hours including weekends and night when required
  • You provide automation solutions of manual repetitive tasks

Qualifications

  • Bachelors degree in Computer Science or related technical field and 7 years of related work experience or a Masters degree and 3 years of experience required.  
  • Solid experience working as a Unix/Linux Administrator
  • Experience with  SSH, SFTP, SSL certificates, Unix/Linux file Systems, and Unix/Linux commands
  • Prior experience working with JVM such as Tomcat under Linux/Unix
  • Prior experience with internet facing application and familiar with Apache or equivalent technologies
  • Strong  scripting in UNIX/Linux  using Shell, Perl or other scripting languages
  • General understanding of networking, firewalls, load balancers, and databases
  • Excellent oral and written communication skills, and strong inter-personal skills
  • Able to multi-task in order to meet goal of low MTTR (mean time to repair)
  • Strong ability to self-learn new technologies
  • Individual should be self-motivated with the ability to work independently
  • Sound planning, organizational and problem solving skills
  • Excellent interpersonal skills with ability to communicate effectively with  technical, non-technical, and clients
  • Demonstrated ability to meet deadlines and commitments in an environment that requires multitasking among concurrent projects

Desired

  • Unix and ITIL related certifications are desirable
  • Application development experience is a plus
  • Experience working in large, complex, enterprise datacenter environments
  • Keynotes or other monitoring tools such as Tivoli
  • BMC remedy
  • Kafka or MQ technologies preferred

Additional Information

Visa will consider for employment qualified applicants with criminal histories in a manner consistent with the requirements of Article 49 of the San Francisco Police Code.


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