Senior Telecom Software Engineer (TS/SCI clearance)
Herndon, Virginia
Experience: 0
Education: BA, BS
Category: Information Technology
Contractor Work Model: Onsite
Brand: System One
Job ID: 351198
Date Posted: 05/21/2026
Shortcut: http://jobs.systemone.com/To09Z5
Senior Telecom Software Engineer
TS/SCI clearance
Herndon, VA
Responsibilities:
• Conduct telecommunications network analysis, diagnostics, and performance remediation with expertise in protocols such as SS7, SIP, VoIP, TCP/IP, and Diameter across 2G, 3G, 4G VoLTE, and 5G networks.
• Monitor and analyze telecommunications systems, interpret inbound data streams, and utilize packet capture tools like Wireshark and tcpdump to troubleshoot core network issues.
• Provide technical support to the CONUS-based engineering team supporting OCONUS deployments, including analysis, findings, and remediation guidance.
• Support Linux-based systems supporting telecommunications infrastructure by ensuring high availability, performance, and reliability, supporting environments on CentOS 7 transitioning to Rocky Linux.
• Configure and manage system monitoring tools such as Nagios, Zabbix, or Grafana and automate system tasks using Ansible or Puppet.
• Design, support, and troubleshoot software and software lifecycle issues, collaborating with development teams and supporting CI/CD pipelines using Jenkins, Jira, and Confluence.
• Create installation guides and as-built documentation, and support Linux firewall and VPN configurations.
Requirements:
• BA, BS degree or equivalent experience in Computer Science, Telecommunications, or a related field.
• 5+ years of experience in telecommunications network analysis, systems engineering, or related disciplines with senior-level expertise in telecom protocols and network operations.
• Advanced proficiency with RHEL / Rocky Linux / CentOS 7 and experience supporting both environments through transition phases.
• Strong understanding of mobile telecom network architectures, protocols (SS7, SIP, VoIP, TCP/IP, Diameter), and core network operations.
• Experience using tools like Jenkins, Jira, Confluence, and Ansible for supporting software and hardware troubleshooting.
• Proven ability to diagnose root causes of network and system performance issues and implement effective solutions.
• Excellent communication skills for technical presentations and collaborations with distributed teams.
System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.
System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.
#M1
#LI-VH1
Ref: #851-Rockville-S1
-
System Administrator
Annapolis Junction, Maryland
System Administrator – TS/SCI w/ Polygraph Location: Annapolis Junction, MD Work Model: 100% Onsite Type: Direct Hire (W2) Compensation: Up to $150,000/year Schedule: 40 hours/week Clearance Required: Active TS/SCI with Polygraph (required) About the R...
Date Posted: 07/21/2026 Recommended
-
Software Integration Enginner
20701, Maryland
Job Title: Software Integration Engineer (All Levels) – Site Reliability Engineering (SRE) Location: Annapolis Junction, MD (onsite) Type: Direct Hire | Hours: 40/week Clearance: Active TS/SCI with Polygraph required About the role We’re hiring Softwar...
Date Posted: 07/22/2026 Recommended
-
IT Technician
WILSON, KS
Mountain, Ltd. has an opening for an IT Technician in the Wilson, KS area! Key Responsibilities and Job Tasks 1. System Administration Perform system monitoring, verifying the integrity and availability of all hardware, server resources, systems, and c...
Date Posted: 06/03/2026 Recommended
-
Cyber Security Engineer III
Springfield, VA
Job Title: Cyber Security Engineer Location: Springfield, VA Work Model: On site Position Type: 6 month contract to hire Clearance Requirement: Active TS/SCI with ability to obtain a polygraph System One IT is seeking a Cyber Security Engineer to suppo...
Date Posted: 06/04/2026 Recommended
-
AI Software Engineer
20151, Virginia
Job Title: AI Engineer Location: Chantilly, VA Type: Direct Hire / Perm Work Model: Hybrid – onsite and remote Security Clearance: Must possess and maintain a TS Security Clearance with the ability to obtain SCI with a CI Poly We are recruiting for an ...
Date Posted: 07/28/2026 Recommended
-
Software Architect
San Diego, CA
Job Title: Software Architect Location: San Diego, CA Type: Contract Compensation: $51.17/hour Work Model: Onsite – onsite Hours: 40.0 Security Clearance: Must possess an active Secret clearance to be considered and would be eligible to obtain up to a ...
Date Posted: 07/14/2026 Recommended
-
Software Engineer
Fort Worth, TX
Job Title: Software Engineer Location: Fort Worth, TX Type: Contract Compensation: Contractor Work Model: Onsite – onsite Hours: 40.0 (10 hours days) Security Clearance: Active Secret with Investigation in the last 5 years or CE enrollment. Overview Jo...
Date Posted: 05/13/2026 Recommended
-
Information Systems Security Engineer
20871, Virginia
INFORMATION SYSTEMS SECURITY ENGINEER (ISSE) Location: Clarksburg, Maryland Work Model: Onsite Type: Direct Hire Compensation: $180,000 (salary) Schedule: 40 hours/week Clearance Required: Active TS/SCI with Polygraph (must be current) Certification Re...
Date Posted: 07/21/2026 Recommended
-
Software Developer (CNO)
Fort Meade, Maryland
Job Title: Software Developer (CNO) Location: Fort Meade, Maryland Type: Contract To Hire Work Model: Onsite Security Clearance: TS/SCI CI Poly Contact: Crystal.dinnocenti@systemone.com RESPONSIBILITIES Lead the designing, developing, documenting, test...
Date Posted: 07/01/2026 Recommended
-
Permitting Specialist
Boise, ID
Mountain Ltd. is seeking a Permitting Specialist to join our team in Boise, ID! Responsibilities/Qualifications: Working with municipalities (City, State, County, Railroads, Canals, Pole Companies) to submit, track and obtain approved permits for our u...
Date Posted: 06/03/2026 Recommended
-
Linux Systems Engineer
Melbourne, FL
Job Title: Linux Systems Engineer Location: Melbourne, FL Type: Contract To Hire Work Model: Hybrid – onsite and remote Hours: 40.0 Security Clearance: Not specified Overview System One is looking for a Linux Systems Engineer in either Melbourne or Mir...
Date Posted: 07/27/2026 Recommended
-
Cyber Security Engineer III
St. Louis, Missouri
Job Title: Cyber Security Engineer Location: St. Louis, MO Work Model: Onsite Position Type: 6 Month Contract to Hire Clearance Requirement: Active TS/SCI required and ability to obtain poly Job Summary We are seeking a Cyber Security Engineer to suppo...
Date Posted: 06/04/2026 Recommended
-
IT & ERP Support Specialist
Adair, Oklahoma
Job Title: Systems Support Specialist Location: Adair, Oklahoma Type: Direct Hire Compensation: $50,000.00 to $70,000.00 Work Model: Onsite – onsite Hours: 40.0 Security Clearance: (not specified) Overview System One has an exciting opportunity for a t...
Date Posted: 07/16/2026 Recommended
-
Senior VMware & Data Center Engineer
alexandria, VA
Job Title: Senior VMware & Data Center Engineer Location: Washington, DC Type: Direct Hire Contractor Work Model: Onsite Hours: 40.0 hours per week Security Clearance: TS/SCI Responsibilities Design and sustain mission-critical data center environments...
Date Posted: 07/21/2026 Recommended
-
Information Security Vulnerability Analyst
Louisville, KY
Job Title: Information Security Vulnerability Analyst Location: Louisville, KY Job Overview System One is seeking an Information Security Vulnerability Analyst for a long-term opportunity in the Louisville, KY area. Responsibilities Monitor enterprise ...
Date Posted: 07/30/2026 Recommended
-
Security Systems Engineer
Vienna, VA
Job Title: Systems Engineer Location: Vienna, VA Type: Contract Work Model: Hybrid – Remote Hours: 40.0 Security Clearance: Not required Responsibilities Assist in maintaining IT and enterprise security applications and systems Troubleshoot Linux and W...
Date Posted: 07/13/2026 Recommended
-
ServiceNow Developer (TS/SCI clearance)
Suitland, Maryland
ServiceNow developer Suitland, MD – 2-3 days/week onsite TS/SCI clearance is required Job Description: As the top-ranked ServiceNow solution provider, we offer federal agencies the deepest capabilities, resources, and experience for their projects. Joi...
Date Posted: 08/03/2026 Recommended
-
Cloud Network Engineer
Greenbelt, Maryland
Job Title: Cloud Network Engineer Location: REMOTE Clearance: Must be eligible to obtain a US Public Trust Contact: Crystal.dinnocenti@systemone.com System One is seeking to hire a Cloud Network Engineer to support a major, large-scale, multi-cloud ent...
Date Posted: 07/07/2026 Recommended
-
Information Systems Security Officer
20871, Virginia
Title: Information Systems Security Officer (ISSO) Location: Clarksburg, MD (Onsite) Type: Direct Hire Compensation: $150,000/year (salary) Schedule: 40 hours/week Clearance Required: Active TS/SCI with Polygraph (required to start) Role Overview We’re...
Date Posted: 07/21/2026 Recommended
-
AI Adoption Specialist
Hampton , Virginia
AI Adoption Specialist Security Clearance: Top Secret with SCI eligibility Langley AFB / JBLE area ((Hampton Va) onsite Responsibilities • Assist in the development of long-term strategic plans for AI/RPA integration across ACC directorate and wings • ...
Date Posted: 07/31/2026 Recommended
-
Software Engineer with TS-SCI with Poly
Fort Meade , Maryland
Job Title: Software Engineer Location: Fort Meade, Maryland Type: Direct Hire Compensation: 125-178K Contractor Work Model: On-site Hours: 40.0 Security Clearance: TS/SCI with full scope Poly Responsibilities Analyze user requirements to derive softwar...
Date Posted: 06/11/2026 Recommended
-
AWS Cloud Network Engineer
McLean, VA
Job Title: AWS Cloud Network Engineer Remote – offsite Responsibilities Design, implement, and manage secure, scalable network infrastructure across on-premises and AWS cloud environments, applying cloud networking best practices to support connectivit...
Date Posted: 06/22/2026 Recommended
-
Cloud Engineer
20171, Virginia
Job Title: Cloud Engineer Location: Herndon, Virginia Type: Direct Hire Compensation: $200,000.00 - $250,000.00 Work Model: Remote – offsite Hours: 40.0 hours per week Security Clearance: Active Secret Clearance Required Responsibilities Manage, config...
Date Posted: 07/15/2026 Recommended
-
Electrical Engineer
Des Moines, Washington
Job Title: Electrical Engineer Location: Des Moines, Washington Type: Contract Compensation: $43.00 - $55.00 per hour Contractor Work Model: Onsite – 5 days onsite POSITION OVERVIEW System One is seeking an Electrical Engineer to support the implementa...
Date Posted: 05/18/2026 Recommended
-
Java Software Engineer III - 3 slots
Dunn Loring , Virginia
Job Title: Java Software Engineer III - 3 slots Contractor Work Model: Remote – offsite Overview If interested reach out directly to kimberly.spicer@systemone.com Responsibilities Ensure compatibility between equipment and software, analyze operational...
Date Posted: 05/14/2026 Recommended
-
IT Service Analyst
Tulsa, OK
Job Title: IT Service Analyst Location: Tulsa, OK Type: Contract To Hire Compensation: $22.58 Work Model: Onsite – onsite Hours: 40.0 Security Clearance: Not specified Overview System One has an exciting opportunity for a new graduate of computer scien...
Date Posted: 07/27/2026 Recommended
-
C/C++ Software Developer
Bossier City, Louisiana
Job Title: C/C++ Software Developer Location: Bossier City, LA Onsite – onsite Security Clearance: Active secret clearance OR previously held secret clearance preferred, must have ability to obtain interim clearance Responsibilities Collaborate with cr...
Date Posted: 06/10/2026 Recommended
-
BAS Technician
Chippewa Falls, WI
BAS Technician Job Title: BAS Technician Location: Chippewa Falls, WI (on-site) Type: Direct Hire Schedule: 40 hours/week Travel: Local travel to job sites in the Milwaukee area (valid driver’s license required) Overview We are seeking a Building Autom...
Date Posted: 07/31/2026 Recommended
-
Production Planner
North Kingstown, Rhode Island
Job Title: Production Planner Location: North Kingstown, Rhode Island Type: Direct Hire Work Model: Onsite – onsite Hours: 40.0 Responsibilities Scheduling & Shop Floor Control: Manage scheduling and shop floor control activities, ideally with shipbuil...
Date Posted: 07/23/2026 Recommended
-
Research Associate
Rockville, MD
Job Title: Research Associate Location: Rockville, MD Type: 6+ month Contract Pay Range: $30.00 - $43.00/hr Hours: Monday-Friday 9AM-5PM Overview Biopharmaceutical Company is seeking a Research Associate, working with animal modeling to support the R&D...
Date Posted: 07/30/2026 Recommended