Network & Security Engineer - Sr. Consultant

Company Description

Visa is a world leader in payments and technology, with over 259 billion payments transactions flowing safely between consumers, merchants, financial institutions, and government entities in more than 200 countries and territories each year. Our mission is to connect the world through the most innovative, convenient, reliable, and secure payments network, enabling individuals, businesses, and economies to thrive while driven by a common purpose – to uplift everyone, everywhere by being the best way to pay and be paid.

Make an impact with a purpose-driven industry leader. Join us today and experience Life at Visa.

Job Description

• Oversee the management and maintenance of our DDI (DNS, DHCP, and IPAM) infrastructure.
• Monitor system performance, troubleshoot issues, and ensure high availability and reliability of DDI services.
• Implement DNS changes and updates aligned with business requirements.
• Provision new domains, networks, ACLs, templates, subnets, special resource records, and DHCP scopes on internal systems.
• Track issues via incident and problem resolution tickets related to DNS, DHCP, and NTP Services.
• Collaborate with other senior team members to design and implement DNS strategies.
• Ensure DNS security by implementing best practices, identifying vulnerabilities, applying patches, and staying up-to-date with the latest industry trends and threats.
• Collaborate with cross-functional teams to provide engineering solutions for network monitoring and alarming.
• Develop self-service tools for application and infrastructure clients to gain better visibility of real-time network health and performance.
• Document all procedures related to DNS management and operations.
• Provide on-call support for critical business escalations.
• Offer technical support and training to internal and other team members as necessary.

This is a hybrid position. Hybrid employees can alternate time between both remote and office. Employees in hybrid roles are expected to work from the office 2-3 set days a week (determined by leadership/site), with a general guidepost of being in the office 50% or more of the time based on business needs.

Qualifications

Basic Qualifocations
8+ years of relevant work experience with a Bachelor’s Degree or at least 5 years of experience with an Advanced Degree (e.g. Masters, MBA, JD, MD) or 2 years of work experience with a PhD, OR 11+ years of relevant work experience.

Preferred Qualifications
9 or more years of relevant work experience with a Bachelor Degree or 7 or more relevant years of experience with an Advanced Degree (e.g. Masters, MBA, JD, MD) or 3 or more years of experience with a PhD

• Bachelor's degree in Computer Science, Information Technology, or a related field.
• Minimum of 5 years' experience in DDI (DNS, DHCP, and IPAM) in an enterprise network, with a solid understanding of DNS and DHCP concepts.
• Working experience in supporting DDI solutions and IPAM systems (VitalQIP ESM/AMS product).
• In-depth knowledge and experience with the latest BIND configuration and policy.
• Working experience in RHEL, Sybase, Rocky Linux, DNS DHCP IPAM professional, VitalQIP IP Management, ESM DR/HA, and Appliance Management.
• Knowledge of network technologies, i.e., routers, switches, load balancers, firewalls, network (public vs. private IP space), CIDR, and routing protocols.
• Good understanding and ability to optimize platforms and technology used in monitoring networks, including but not limited to SNMP, syslog, and probing.
• Experience implementing engineering solutions for network monitoring and alarming tools, leveraging vendors such as Netcool, IBM SevOne/ITNM, Solarwinds, Netscout, Netbrain, and Thousandeyes.
• Understands monitoring technologies, i.e., Splunk, SNMP, Traps, Syslogs, and others.
• Proficiency in scripting languages, i.e., Perl, Shell scripting on UNIX/Linux OS.
• Excellent problem-solving skills and the ability to troubleshoot complex DNS and monitoring issues.
• Excellent communication skills and the ability to work well in a team.
• Ability to manage multiple projects and tasks simultaneously.

Additional Information

Visa is an EEO Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status. Visa will also consider for employment qualified applicants with criminal histories in a manner consistent with EEOC guidelines and applicable local law.