Data Center Network Administrator Secret Cleared

Marathon TS; San Jose (CA); On-site; USD 90,000 - 130,000; Full time

Job summary

Marathon TS is seeking an experienced System Administrator to manage our data center network infrastructure. You will operate, optimize, and maintain the data center, ensuring reliability and security while collaborating with cross-functional teams.

The role requires hands-on experience with network hardware, monitoring tools, and adherence to STIG-like security practices. On-call duties and documentation are part of the job.

Qualifications

• Bachelor's degree in CS/IT or a related field.
• Minimum of 3 years in data center network administration or similar role.
• Deep knowledge of TCP/IP, VLAN, BGP, OSPF, MPLS and DNS.
• Hands-on experience with switches, routers, load balancers, and firewalls.
• Certifications such as SEC+, CCNA/CCNP/CCIE are highly desired.

Responsibilities

• Operate, optimize, and maintain data center network infrastructure.
• Ensure availability, reliability, and scalability of the data center network.
• Monitor performance, identify bottlenecks, and implement optimizations.
• Diagnose and troubleshoot network issues including connectivity and routing errors.
• Provide on-call support and participate in on-call rotation.

Skills

TCP/IP

VLAN

BGP

OSPF

MPLS

DNS

Network troubleshooting

Security principles

Communication

Education

Bachelor's degree in Computer Science or Information Technology

Tools

Wireshark

SNMP

Packet analysis

VMware

Hyper-V

Firewalls

Switches & Routers

Job description

Job Description

Job Description

System Administrator

This is a six month Contract role

Job Description:
As an experienced Data Center Network Administrator, you will be responsible for the operation, optimization, and maintenance of our data center network infrastructure. You will collaborate closely with cross-functional teams to ensure the availability, performance, and security of our network, as well as provide technical expertise in troubleshooting and resolving complex network issues. The ideal candidate will possess a strong background in network administration within a data center environment, a deep understanding of networking protocols and technologies, and excellent problem-solving skills.

Responsibilities:

• Operate, optimize, and maintain the infrastructure within the data center environment.
• Ensure the availability, reliability, and scalability of the data center network.
• Monitor network and service performance, identify bottlenecks, and implement necessary optimizations.
• Ability and knowledge of rack/stack various types of IT equipment.
• Strong knowledge of data center best practices.
• Collaborate with system administrators, security teams, and other stakeholders to ensure network security and compliance with industry standards.
• Troubleshoot and resolve network-related issues, such as connectivity problems, routing errors, and performance degradation.
• Conduct regular network assessments and capacity planning to support future growth and scalability.
• Stay up-to-date with emerging networking technologies and recommend enhancements to improve efficiency and performance.
• Maintain accurate documentation of network configurations, diagrams, and procedures.
• Provide on-call support and participate in the on-call rotation schedule.
• Resource for deployment and operations teams representing data center concepts for development and production related activities.
• Receipt of packages/equipment and validation.
• Capable of lifting to 50lbs. and are agile in manual dexterity (climb, stoop, etc.) to rack and stack equipment or cable plant access with or without assistance.
• Flexibility to work an off schedule, fill in for workmates, respond to emergencies, incidents, etc.
• Primary assignee to resolve network issues, cable new equipment deployments with best practice standards and troubleshoot Layer 1
• Primary assignee to resolve issues at x data center
• Support enterprise level network requirements
• Install updates to network equipment and IOS (IOX-XE, NXOS) software
• Ensure network hardware has a secure baseline configuration and meets DIA Security Technical Implementation guide (STIG) requirements
• Update and maintain network logical and physical topology to include WIFI heat maps
• Configure and install new or replacement network hardware including VLAN configuration and routing
• Investigate and report security breaches, collaborate with the supervisor to ensure continuity of security measures, research and recommend solutions to security problems
• Devise methods for performance and enhancement
• Train on usage of new hardware and applications

Required Skills:

• Bachelor's degree in Computer Science, Information Technology, or a related field.
• Minimum of 3 years of experience as a Data Center Network Administrator or a similar role.
• In-depth knowledge of networking protocols and technologies, such as TCP/IP, VLAN, BGP, OSPF, MPLS, and DNS.
• Hands‑on experience with network hardware, including switches, routers, load balancers, and firewalls.
• Proficient in network monitoring and troubleshooting tools, such as Wireshark, SNMP, and packet analysis.
• Strong understanding of network security principles and best practices.
• Familiarity with the use of DoD Security Technical Implementation Guides (STIGs) and running checklists and remediation of any findings.
• Familiarity with virtualization technologies, such as VMware or Hyper‑V, and experience with SDN/NFV concepts is a plus.
• Excellent problem‑solving and analytical skills, with the ability to diagnose and resolve complex network issues.
• Strong communication and interpersonal skills, with the ability to collaborate effectively with cross‑functional teams.
• Certifications such as SEC+, CCNA, CCNP, or CCIE are highly desired.

Required certs (One of the following)

• A+
• CND
• Network+

Company Description

Marathon TS provides a full range of professional services for clients that require support from professionals with specialized skills and experience in a specific technical area or subject matter. Marathon TS also provides IT solutions, including strategy, operations, transformation and mission support.

Company Description

Marathon TS provides a full range of professional services for clients that require support from professionals with specialized skills and experience in a specific technical area or subject matter. Marathon TS also provides IT solutions, including strategy, operations, transformation and mission support.