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Salary
≈ $91k – $180k per year (Estimated)
Location
In office (Charleston)
Seniority
Middle · 3+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 13, 2026. First seen by Alion on Mar 2, 2026.

Overview
Company
Impact
Profile match
Fathom 4 delivers trusted defense engineering solutions across C5ISR, cybersecurity, software, hardware, and logistics for DoD clients.

ABOUT US:

Fathom 4 (www.fathom4.com) is the kind of defense services company that you've always wanted to work with... and for. We strive to take care of all the people we support, including our employees, clients, troops, and community. We are in the people business, and that principle is what drives our culture. We hire people for a career, not just a particular project.

When we concentrate on genuinely taking care of you, we know you will do what you can to care for the client. Fathom 4 grows when we build teams that feel the same way.

Security Clearance Statement: This position requires a government security clearance, you must be a US Citizen for consideration.

RESPONSIBILITIES:

· Integrate software baselines for current and future systems.

· Analyze, develop, test, and modify hardware and/or software interfaces and solutions to meet user requirements.

· Coordinate with users to identify data availability, report requirements, and systems design problems.

· Define system objectives and prepare system design specifications to meet user requirements and solve interface problems.

· Review work products for correctness, adherence to design concepts, and user standards, and ensure progress according to schedules.

· Prepare status reports and presentations on task performance to clients.

· Maintain disciplined software release control and configuration management.

· Coordinate with DoD Cyber methodology and standards and work within a Risk Management Framework (RMF).

· Provide technical documentation for users through installation and configuration of the systems.

MINIMUM SKILLS AND REQUIREMENTS:

EDUCATION

  • BS degree in Engineering, Computer Engineering, Computer Science, or in a relevant IT major from an ABET accredited program required. In lieu of a degree, an abundance of real work experience with a Sec+ certification will be considered.

EXPERIENCE

· Minimum of three (3) years of experience in software integration, design, and development with Windows or Linux (preferably both).

· Experience with scripting in at least two languages: PowerShell, NSIS, VBScript, JavaScript, Batch, and/or Bash.

· Proficient with relational databases such as SQL Server, PostgreSQL, or MySQL.

· Understanding of computer science fundamentals, design patterns, data structures, encryption algorithms, and well-known ports & protocols.

· Familiarity with Agile methodologies, including Scrum and Kanban.

· Experience with virtual environment setup and support using VMware ESXi.

· Engineering experience with Microsoft Windows 10 OS or Microsoft Windows Server OS.

· Experience in RHEL OS engineering environments.

· Network interconnection setup and support experience using Cisco IOS or Netgear OS.

· Experience in scanning, patching, and mitigating cybersecurity vulnerabilities using ACAS and SCAP.

SKILLS & ATTRIBUTES:

· Excellent communication skills and the ability to interact with all levels of end users and technical resources.

· Ability to operate effectively in a team-oriented and collaborative environment.

· Detail-oriented with strong documentation skills for software build plans and technical manuals.

· Strong problem-solving skills and the ability to propose solutions.

· Capability to automate installation and configuration of operating systems and software.

· Familiarity with cybersecurity requirements and compliance, including DISA STIG and RMF controls.

· Ability to provide SME (Subject Matter Expert) and fleet support, troubleshoot issues, and validate solutions.

SECURITY CLEARANCE

· Must be a US Citizen

· Current DoD SECRET minimum security clearance preferred or the ability to obtain a SECRET security clearance is required. A SECRET level security clearance is required as military base and facility access is critical and must be maintained throughout employment.

LOCATION

· The work location is N. Charleston, SC, with 0-5% travel expected. This is an on-site position.

ADDITIONAL DESIRED QUALIFICATIONS:

· Prior DCGS or military experience a HUGE plus!

· Experience with DoD PKI, SSL, or OAuth 2.0 security protocols.

· Experience with ArcGIS Enterprise product suite and ArcGIS Client applications.

· Experience with Global Command and Control System - Joint (GCCS-J).

· Experience with the Windows Assessment and Deployment Kit (ADK) for custom Windows image deployment.

· Engineering experience with Android OS.

· Experience drafting technical manuals using MIL-STD-38784.

· Virtual machine engineering experience using Hyper-V or VMware Workstation.

· Experience analyzing network traffic using tools like Wireshark.

· Containerization experience using Kubernetes, Docker, or equivalent software.

· Automation experience using Ansible.

EQUAL OPPORTUNITY EMPLOYER

Fathom 4. LLC. is an equal opportunity employer that does not discriminate in employment. All qualified applicants will receive consideration for employment without regard to their race, color, religion, sex, age, sexual orientation, gender identity, or national origin, disability or protected veteran status.

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