Fathom 4

Review

★7.9/10

🇺🇸 Charleston, South Carolina, United States·Reviewed Jul 2026

Service-disabled veteran-owned engineering firm delivering C4ISR and defense engineering to the DoD.

Visit Website

Best For

DoD and defense contractors needing SDVOSB-qualified engineering services

Industries

Defense, Government, Military Technology

About Fathom 4

Fathom 4, LLC is a Service-Disabled Veteran-Owned Small Business (SDVOSB) headquartered in Charleston, South Carolina, providing engineering services to the Department of Defense. The firm covers C4ISR design, modeling and simulation, finite element analysis, high performance computing, and technical documentation. Fathom 4 achieved Inc. 5000 recognition from 2017 to 2019 and holds ISO certification.

Who Fathom 4 Is Best For

Fathom 4 is specifically suited for DoD prime contractors and federal agencies that need SDVOSB set-aside engineering support for C4ISR, tactical vehicle systems, and simulation programs. Their Non-Traditional OTA contractor status provides additional contracting flexibility.

Why Choose Fathom 4

SDVOSB certification for set-aside contracts

Inc. 5000 recognition 2017-2019

ISO certified

Non-Traditional OTA contractor status

Charleston, SC location near major DoD installations

Things to Consider

—Defense-only focus, no commercial application

—Narrow service scope outside DoD engineering

—Contract vehicle requirements may limit accessibility

—No disclosed pricing or project minimums

Fathom 4 Services

C4ISR EngineeringModeling & SimulationFinite Element AnalysisHigh Performance ComputingTactical Vehicle EngineeringTechnical Documentation

More Software Agencies

Metal Toad

★ 8.2

Enterprise media and entertainment companies moving to AWS cloud

Metal Toad is a Los Angeles-based AWS Advanced Tier Consulting Partner founded in 2003, specializing in cloud migration, AI/ML implementation, and application modernization. The 50+ person firm has built award-winning consumer-facing applications for Sony, Daimler, DC Comics, and the GRAMMYs. They offer consulting, software development, managed services, and cloud cost optimization across media, entertainment, and enterprise clients.

View Profile

Mind Studios

★ 8.2

Startups building marketplace and on-demand service apps

Mind Studios is a product-focused software development agency based in Ukraine, serving clients across the US, Europe, and the Middle East. The company specializes in mobile and web application development for startups and mid-sized companies. Mind Studios is particularly known for marketplace platforms, on-demand service applications, and social products. Their team handles design, development, and QA in-house, and they maintain a structured discovery process before committing to development estimates.

View Profile

Modern Tribe

★ 8.2

Enterprise wordpress development, Digital transformation, Large-scale builds

Modern Tribe is a Minneapolis, United States-based agency specializing in wordpress development. Their portfolio spans work across Technology.

View Profile