System Administrator (Mid/Senior) – TS/SCI Full Scope Poly – Annapolis, MD or Bluffdale, UT

System Administrator (Mid/Senior) – TS/SCI Full Scope Poly

📍 Locations: Annapolis, MD or Bluffdale, UT
🏢 Work Arrangement: 100% Onsite
💼 Employment Type: Full-Time
🔒 Security Clearance Required: Active TS/SCI with Full Scope Polygraph (NSA Preferred)
🇺🇸 Citizenship: U.S. Citizen Required
🚫 Visa Sponsorship: Not Available
🚚 Relocation Assistance: Available
💰 Compensation: $100,000 – $200,000 Base Salary

Overview

A leading government technology contractor is seeking System Administrators (Mid-Level and Senior-Level) to support mission-critical operations across highly secure environments in Maryland and Utah.

These positions support high-performance computing (HPC) infrastructure, mission operations sustainment, and complex Linux-based enterprise environments. Candidates may come from Linux System Administration, Platform Engineering, Storage Engineering, or Network Engineering backgrounds, but all team members are expected to perform core Linux administration responsibilities.

This is an excellent opportunity for cleared professionals who enjoy solving complex technical problems and supporting some of the nation's most critical missions.

Key Responsibilities

Linux System Administration

• Install, configure, and administer Linux operating systems.

• Manage system resources, file systems, and networking services.

• Perform operating system maintenance, upgrades, and patching.

• Support software installation, compilation, and configuration.

Operations & Infrastructure Support

• Monitor mission-critical systems and infrastructure.

• Troubleshoot operating system and application issues.

• Maintain system reliability, availability, and performance.

• Participate in operational sustainment activities.

Automation & Configuration Management

• Develop and maintain Bash scripts.

• Support infrastructure automation initiatives.

• Contribute to configuration management processes.

• Improve operational efficiency through automation.

Collaboration & Troubleshooting

• Work closely with engineering and operations teams.

• Investigate and resolve complex technical issues.

• Document configurations, procedures, and troubleshooting methodologies.

• Participate in system upgrades and maintenance windows.

Required Qualifications

Security Requirements

✔ Active TS/SCI Clearance

✔ Active Full Scope Polygraph (NSA Preferred)

✔ U.S. Citizenship Required

Linux Administration Experience

Strong experience supporting one or more of:

• Red Hat Enterprise Linux (RHEL)

• CentOS

• Rocky Linux

• SUSE Linux Enterprise Server (SLES)

• Ubuntu

Required expertise with:

• Linux installation and configuration

• File system administration

• TCP/IP networking

• Operating system troubleshooting

• Application troubleshooting

• Bash scripting

• Software compilation and installation

Preferred Technical Experience

High Performance Computing (HPC)

• HPC environments

• Large-scale enterprise infrastructure

• Mission-critical computing systems

Monitoring & Operations Tools

• Jira

• Confluence

• Grafana

• Prometheus

• Nagios

• Slurm

• Git

• Salt

• Ansible

Storage Engineering Experience (Preferred)

Candidates with storage engineering backgrounds are highly desirable.

Experience with:

• Lustre File System

• DDN Exascaler

• Storage fabrics

• Storage architecture

• Performance tuning

• Storage optimization

Emerging Storage Technologies

Exposure to:

• E1000 Storage Systems

• Elastic Storage Nodes (ESNs)

• DAOS

• Weka Data Platform

Network Engineering Experience (Preferred)

Experience with:

• TCP/IP Networking

• Enterprise Routing & Switching

• Storage Networking

Preferred vendor experience:

• Cisco

• Juniper

• Arista

High-Speed Networking

• InfiniBand

• Slingshot

Performance & Benchmarking Tools

Experience with one or more of:

• IOR

• iperf

• FIO

• lnet_selftest

Must-Have Requirements

Clearance

✅ Active TS/SCI Clearance

✅ Active Full Scope Polygraph (NSA Preferred)

Linux Administration

✅ Linux System Administration Experience

✅ Bash Scripting

✅ TCP/IP Networking

✅ OS & Application Troubleshooting

Soft Skills

✅ Strong Analytical Skills

✅ Strong Troubleshooting Ability

✅ Ability to Work Independently

✅ Team Collaboration Skills

Screening Questions

1. Do you currently hold an active TS/SCI clearance with a Full Scope Polygraph?

2. Was your Full Scope Polygraph issued by NSA?

3. When was your most recent Full Scope Polygraph completed?

4. How many years of Linux administration experience do you have?

5. Which Linux distributions have you supported (RHEL, CentOS, Rocky, Ubuntu, SLES, etc.)?

6. Do you have experience with Bash scripting and automation?

7. Have you supported large-scale enterprise or HPC environments?

8. Do you have experience with storage technologies such as Lustre, DDN, DAOS, or Weka?

9. Do you have networking experience with Cisco, Juniper, Arista, InfiniBand, or Slingshot?

10. Are you willing to work onsite full-time in either Annapolis, MD or Bluffdale, UT?

Ideal Candidate Profile

The ideal candidate will:

• Hold an active TS/SCI Full Scope Polygraph.

• Have strong Linux administration experience.

• Thrive in highly customized, mission-critical environments.

• Enjoy troubleshooting complex technical challenges.

• Demonstrate curiosity and continuous learning.

• Be comfortable supporting storage, networking, or platform infrastructure.

• Possess strong analytical and problem-solving skills.

• Work effectively both independently and within collaborative engineering teams.

Candidate Snapshot

Requirement

Details

Clearance

Active TS/SCI + Full Scope Poly

Citizenship

U.S. Citizen

Experience Level

Mid-Level to Senior

Linux Expertise

RHEL, CentOS, Rocky, Ubuntu, SLES

Scripting

Bash

Environment

Mission-Critical / HPC

Location

Annapolis, MD or Bluffdale, UT

Work Arrangement

100% Onsite

Travel

None

Compensation

$100K – $200K

Relocation

Available

Why This Opportunity?

Mission Impact

Support highly classified systems critical to national security operations.

Technical Challenge

Work in complex, large-scale Linux and HPC environments that demand advanced troubleshooting and engineering skills.

Career Growth

Gain exposure to cutting-edge storage, networking, automation, and high-performance computing technologies.

Excellent Benefits

• 3 Weeks PTO

• 11 Federal Holidays

• Medical & Dental Coverage

• Life Insurance

• STD & LTD Coverage

• 401(k) with Company Match

• Long-Term Career Stability

This opportunity is ideal for a Linux System Administrator, Platform Engineer, Storage Engineer, Infrastructure Engineer, HPC Administrator, Network Engineer, or Systems Engineer with an active TS/SCI Full Scope Polygraph looking to support highly impactful government missions.

Telecommunications Engineering Specialist – Winchester, VA (Active Secret Clearance Required)

Telecommunications Engineering Specialist

📍 Location: Winchester, VA (Onsite)
💼 Employment Type: Full-Time
🕒 Schedule: Monday–Friday, 8:30 AM – 5:00 PM (ET)
🔒 Security Clearance: Active Secret Clearance Required
🚫 Visa Sponsorship: Not Available
🚚 Relocation Assistance: Available
💰 Compensation: $151,000 – $180,000

Overview

A leading communications technology organization is seeking a Telecommunications Engineering Specialist to support mission-critical voice modernization and emergency communications programs within a federal environment.

This role focuses on Ribbon Federal Edge deployments, SIP interconnection engineering, Session Border Controllers (SBCs), and E-911/NG911 call routing integration supporting Army and public safety communications networks.

Key Responsibilities

Telecommunications Engineering

• Support deployment and integration of Ribbon Federal Edge gateways.

• Design and support SIP interconnections and policy routing.

• Analyze and troubleshoot VoIP and SIP call flow issues.

• Support connectivity between Federal Edge, DISA VISP, and Army PSAP systems.

• Conduct deployment validation and readiness assessments.

E-911 & Public Safety Communications

• Support E-911 and NG911 routing requirements.

• Troubleshoot emergency call routing and PSAP integration issues.

• Assist with call flow analysis and performance optimization.

• Identify technical risks and recommend mitigation strategies.

Network & Systems Support

• Support Session Border Controller (SBC) deployments.

• Track engineering issues and provide technical recommendations.

• Assist with interoperability testing and gateway performance improvements.

• Participate in technical coordination across multiple stakeholders.

Required Qualifications

Experience

• 10+ years of Telecommunications Engineering experience.

• 5+ years of VoIP and SIP Engineering experience.

• Experience supporting large-scale voice communications environments.

Technical Expertise

✔ Ribbon Communications / Sonus / Genband

✔ Session Border Controllers (SBCs)

✔ SIP Signaling & Interconnects

✔ VoIP Engineering

✔ E-911 / PSAP Integration

✔ Wireshark Packet Analysis

✔ SIP Call Flow Troubleshooting

✔ Emergency Communications Networks

Security Requirements

• Active Secret Security Clearance (Required).

Education

• Bachelor's Degree in:

• Telecommunications

• Engineering

• Information Technology

• Related Field

Equivalent experience may be considered.

Preferred Qualifications

• DISA VISP experience.

• Army Voice Modernization (VMOD) experience.

• NG911/Public Safety Communications background.

• PSAP interconnection experience.

• Cisco CCNP or CCIE certification.

• Federal or DoD telecommunications experience.

Ideal Candidate

The ideal candidate is a senior telecommunications engineer with deep expertise in:

• SIP and VoIP architecture.

• Ribbon/Sonus/Genband technologies.

• Session Border Controllers.

• E-911 and NG911 call routing.

• Public Safety Answering Point (PSAP) integrations.

• Federal and DoD telecommunications environments.

They should be comfortable troubleshooting at both the network and packet level using Wireshark and have experience supporting mission-critical emergency communications systems.

Candidate Snapshot

Requirement

Details

Experience

10+ Years

VoIP/SIP Experience

5+ Years

Clearance

Active Secret Required

Location

Winchester, VA (Onsite)

Industry

Defense / Telecommunications

Education

Degree or Equivalent Experience

Travel

Minimal

Relocation

Available

Sponsorship

Not Available

Screening Questions

1. Do you currently hold an Active Secret Security Clearance?

2. How many years of Telecommunications Engineering experience do you have?

3. How many years of VoIP/SIP Engineering experience do you have?

4. What experience do you have with Ribbon Communications, Sonus, or Genband solutions?

5. Have you deployed or supported Session Border Controllers (SBCs)?

6. Describe your experience with E-911, NG911, or PSAP integrations.

7. Have you worked on DISA VISP, Army VMOD, or other DoD telecommunications programs?

8. How have you used Wireshark for SIP or VoIP troubleshooting?

9. Are you able to work onsite in Winchester, VA Monday through Friday?

What Makes Someone Successful in This Role?

• Strong SIP and VoIP troubleshooting expertise.

• Deep understanding of emergency communications networks.

• Hands-on experience with Ribbon Federal Edge and SBC technologies.

• Ability to analyze packet captures and call flows using Wireshark.

• Experience operating within federal or defense environments.

• Strong communication skills and ability to coordinate across technical and operational teams.

• Active Secret clearance and familiarity with mission-critical communications systems.

Network Engineer - Grand Forks, ND - Full Time, Perm - Base Salary - USD $90,640 to $135,960

Network Engineer

Grand Forks, ND

Full Time, Perm

Base Salary - USD $90,640 to $135,960

The Network Engineer is responsible for implementing and maintaining the organization's network infrastructure, ensuring its reliability, security, and optimal performance. This position involves collaborating with cross-functional teams, analyzing network requirements, identifying areas for improvement, and implementing appropriate solutions. The Network Engineer will also provide technical support and troubleshoot network-related issues to ensure seamless operations across the organization. 

Essential Responsibilities

1.      Network Implementation and Maintenance

1.      Configure, and deploy network infrastructure components such as routers, switches, firewalls, load balancers, and wireless access points. Collaborate with stakeholders to determine network requirements and implement solutions that align with business objectives.

2.      Perform regular network maintenance tasks, including firmware upgrades, security patches, and performance optimization. Monitor network performance, identify bottlenecks or areas of improvement, and implement necessary changes to enhance network reliability and efficiency.

3.      Create and maintain accurate network documentation, including network diagrams, configurations, and standard operating procedures. Document network changes, upgrades, and incidents to facilitate knowledge sharing and future reference.

4.      Collaborate with the IT security team and other IT network staff.

        2. Network Troubleshooting & Optimization

1.       

1.      Respond to network-related issues, diagnose problems, and perform troubleshooting to resolve incidents and minimize downtime. Collaborate with other IT teams and vendors to ensure prompt and effective resolution of network issues.

2.      Analyze network performance metrics, identify areas for improvement, and propose solutions to optimize network performance, including bandwidth utilization, latency reduction, and quality of service (QoS) enhancements.

3.      Monitor network utilization trends, forecast future capacity requirements, and recommend appropriate upgrades or expansions to meet evolving business needs. Collaborate with procurement teams to evaluate and procure network equipment and services.

         3. Network Security

1.       

1.      Implement and maintain network security measures, including firewalls, VPNs, intrusion detection systems, and access controls.

2.      Stay updated with the latest security threats and recommend appropriate measures to mitigate risks and protect the network infrastructure.

Minimum Qualifications

• 4-year degree in Computer Science, Engineering, Information Systems, or a related field

• OR a 2-year degree with work experience in network administration

Experience

• Proven experience in a network engineer role or something similar

• Expertise in designing, implementing, and supporting enterprise-level networks

• Strong knowledge of network protocols, routing, switching, and security concepts

• Solid understanding of TCP/IP, VPN, MPLS, BGP, OSPF, VLANs, and other network protocols and technologies

• Experience and proficiency in network monitoring & management tools, configuring & troubleshooting networking equipment and related software

• Strong problem-solving and analytical skills

• Excellent communication skills - both verbal and written

To Apply Please Complete the Form Below

Network Engineer – Security Clearance Required - South West London - Full-Time, Permanent - £50,000 - £55,000

Network Engineer – Security Clearance Required
South West London
Full-Time, Permanent
£50,000 - £55,000

**Please note that due to the level of Security clearance required for this role, all candidates must be either; a UK or Irish National, Commonwealth Citizen or British protected person or a EEA (European Economic Area) citizen who has lived in the UK for a period of more than 5 years, without leaving for a period of more than 6 months. Candidates who do not meet these requirements will not qualify for clearance.**

About the role

The teams support in excess of 1,000 computers and 1,800 users across 25 residences, 7 days a week. The Network Team plays an integral part in this with the design, implementation and management of all IT infrastructure including LAN, WAN, wireless, telephony, network perimeter and network security. The Network Team supports multiple unique and prestige locations and organisations across the UK. In addition, the Network Team are responsible for BAU activities, 2nd and 3rd line fault finding, hardware procurement, firmware management and system security.

Role responsibilities

The Network Engineer reports to the Network Manager and is responsible for supporting the maintenance and evolution of the enterprise network and voice infrastructure.

The focus for the post holder is the administration of The network infrastructure, including: network operation, monitoring, design, expansion of the network, troubleshooting, fault fixing and all aspects of network security both internal and external.

The post holder will work closely with the rest of the Digital Services Team, to ensure the highest degree of functionality and reliability to all enterprise services. The post-holder will be expected to work with and supervise 3rd party contractors and suppliers and to liaise with other government departments in matters of security.

The role demands continued development of the IT systems to provide all computer users with the necessary access, independent of location.

Accountabilities

1.      Network Security

·        IT Health Check: Implement network security recommendations from annual IT health check

·        Implement and maintain network monitoring and intrusion detection solutions, including the management of Next-Generation Firewalls (NGFWs).

·        Work closely with the cyber team, ensuring that firewalls are managed and updated to protect the confidentiality and integrity of data.

2.      Network Infrastructure

·        LAN (Local Area Network)

o   Plan upgrades and design of the LAN (including installation of new hardware, commissioning new fibre optic links, and design considerations for future expansion).

o   Ensure that software and firmware is regularly updated on network devices.

·        WAN (Wide Area Network) and VPN (Virtual Private Network)

o   Support and monitoring of WAN and VPN connectivity.

o   Design and implementation of new remote installations.

o   Ensure quality of service to control network traffic to remote residences.

·        NAC (Network Access Control)

o   Enforce network security through policy based NAC.

o   Develop NAC usage to support VLAN assignment of network devices.

·        Cabling work

o   Specifying and prioritising new cabling work.

o   On-going work to build resilience into the network infrastructure.

·        Wi-Fi and IPTV networks

o   Installation, maintenance and support of stand-alone and wireless networks. Ensure firewalls are correctly configured and monitored.

o   Configure, operate and diagnose faults in the IPTV system.

·        Commercial and Retail Systems

o   Monitor and maintain 3rd party networks, Ticketing and Till network.

3.      VoIP Platform and Telephony Services

·        Maintaining a modern, secure and reliable VOIP telecoms service.

·        Escalating service / quality issues to telecoms suppliers and working with their engineers to deploy new services and resolve faults.

·        Tracing faults within the telecoms infrastructure.

·        End user training in telecoms use.

·        Configuring the Mitel VOIP platform with dial patterns, calling plans and user settings        .

·        Installing new VOIP hardware for users, including media gateway and streamline services.

·        The engineer will also have input into the telecoms system design and strategy, where appropriate and support continuous improvement of the service.

4.      Systems Maintenance and Out of Hours working

·        The role requires carrying out regular system maintenance and upgrades which can only be done outside of normal hours.

·        Fixing of network faults and providing technical leadership. The post holder will identify and eliminate single points of failure everywhere it is cost-effective to do so.

·        Maximises network performance through monitoring, troubleshooting problems and outages, planning and scheduling upgrades.

5.      Ensure the High Availability of Back Office Systems

·        Work closely with the other members of the IT Operations Team to ensure a high availability of all network resources and back office systems.

·        Monitor network availability and produce monthly reports

6.      Technical Training and Documentation

·        Create and maintain appropriate network documentation and diagrams

·        Maintain appropriate management and technical qualifications

·        Perform training and provide technical guidance to other Network Team members, supporting their development.

7.      Service Delivery

·        Produce and deliver service improvement plans

·        Deliver Network services within defined SLA, OLA and KPI’s

·        Manage escalated Incidents and Problems in line with ITIL best practice

8.      IT Business Continuity

·        Participate in test exercises of the IT Business Continuity Plan.

·        Ensure adequate redundancy and network backup measures are in place.

Role Requirements

Essential

1       Cisco CCNP Enterprise or equivalent qualification

2       Extensive network security and design experience

3       Experience working with VPNs and Network Security

4       Proven experience of routing and switching on Cisco devices

5       Experience with Next Generation Firewalls, ideally Palo Alto

6       Excellent switching and routing experience

7       WAN / LAN Routing experience

8       Experience working with wireless networks

9       Substantial experience in a telecoms engineering role including hands on experience of a VoIP UC Platform, mixed analogue / IP environment.

10     Excellent communication skills at all levels

11     Experience in managing 3rd party suppliers

12     Experienced in planning projects and prioritisation of work

13     Ability to manage a varied workload with conflicting priorities

14     Ability to build and maintain effective working relationships with a variety of internal and external stakeholders

15     Possess a supportive and flexible approach to work with a team focused attitude

Desirable

1       Network bandwidth management experience and Quality of Service

2       Experience with storage networks and disaster recovery solutions

3       Familiarity with thin client environments

4       Network Access Control experience

5       Windows Server 2008 R2 & 2012 R2 experience

6       Experience with VMWare ESX Server

7       3rd line support experience

8             PRINCE 2 and ITIL qualified