Join Our Stellar Team at Castalia Systems!

Are you ready to skyrocket your career with us? We're on the lookout for ambitious individuals who are eager to make their mark in a diverse and thriving environment.

At Castalia Systems, we're not just another company – we're a certified Woman Owned Small Business (WOSB) and Small Disadvantage Business (SDB) committed to excellence since 2011. Join us in delivering top-tier solutions to the dynamic Defense and Intelligence sector.

As valued members of our team, we prioritize your well-being. Enjoy a comprehensive benefits package, including medical, dental, and vision coverage, 401k matching, generous PTO, paid holidays, professional training opportunities, and even pet insurance to ensure your furry friends are cared for too.

Castalia Systems is seeking a VoIP & Unified Communications Specialist in the O’Fallon, IL area.

A VoIP & Unified Communications Specialist will support the Defense Information Systems Agency (DISA), and act as the provider of Defense Information System Network (DISN) services to the department of Defense (DoD) and other government organizations.  The core telecommunications capabilities supported by GSM-O II enables the Warfighter to meet operational needs by providing world-wide telecommunications supporting natural disaster relief, peacetime humanitarian assistance, regional conflicts, and on-going strategic deterrence activities.  This position is for the Unified Capabilities O&M Incident Management Desk within DISA’s 24x7 Network Operations Center (NOC) on Scott Air Force Base, Illinois supporting worldwide voice and video services.  Shift work to include nights and weekend duty is required. Position may include extended periods of sitting while on a computer or phone and speaking with customers.

A qualified candidate will perform the following duties and responsibilities, but are not limited to:

• Conduct network and telecommunications system incident investigation.
• Monitor DoD-wide voice/video support hardware and services (legacy and current offerings): Voice telephony switching on Unclassified and Classified networks, mobile flyaway kits, Voice Internet Service Provider (VISP), and Video Teleconferencing (VTC) systems.
• Maintain, troubleshoot, document and repair network devices to include phone systems, call managers, VTC’s, network infrastructure and trunk circuits.
• Analyze network and telecommunications alarms and identify potential issues/solutions.
• Identify, recommend, and implement simple solutions for smooth continuing operation of the DISN network as capacity needs change.
• Conducts training of newly hired technicians.
• Works under limited to no direct supervision.

Security Clearance Requirement:

Active/current TS/SCI clearance is required.

Required Qualifications:

• High School Diploma and 2-4 yrs of relevant technical experience.
• Proficiency in two or more of the following: TDM telephone switches, VoIP, Call Manager, VTC systems.
• Competency in two or more of the following devices/vendors: CISCO, Juniper, Nortel, ACME Packet, Oracle, Palo Alto, Session Boarder Controllers (SBC), H.323 endpoints.
• Ability to perform troubleshooting, configuration, and restoration of services across multiple platforms.
• General understanding of IP and transport network topologies.
• Must hold Current DoD-8570 IAT Level 2 baseline certification (Security+ CE, or equivalent) prior to start date.
• Ability to participate in a 24/7 shift work environment, to include working nights and weekends.

Preferred Qualifications:

• Associates or Bachelor’s degree desirable.
• Knowledge surrounding two or more of the following: Routers, Switches, PRI’s, SBC, Video Gatekeepers, Network Monitoring Systems, and cryptography operation/configuration.
• Understanding of Session Initiated Protocol (SIP) messaging.
• Technical Control Facility experience.
• Ticketing systems experience.
• Network+, CCNA, JNCIA, and similar/relevant certifications.
• Customer service experience.

Castalia Systems is an equal employment opportunity and affirmative action employer and strives to comply with all applicable laws prohibiting discrimination based on race, color, creed, sex, sexual orientation, age, national origin, or ancestry, physical or mental disability, veteran status, marital status, HIV-positive status, as well as any other category protected by federal, state, or local laws. All such discrimination is unlawful, and all persons involved in the operations of the company are prohibited from engaging in this type of conduct.