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Top Security Companies in San Antonio, TX (60)

Securitas Security Services USA, Inc.
Professional Services • Security • Consulting
211 Offices
95,000 Employees
Hiring Now

Securitas Security Services USA, Inc. is a leading provider of customized security and guarding solutions. The company offers a comprehensive range of protective services, including on-site guarding, mobile patrols, remote monitoring, and electronic security. They also provide specialized services in fire and safety, corporate risk management through Pinkerton, and professional consulting and investigations to help safeguard people, property, and information.

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Securitas Security Services USA, Inc.
Spectrum San Diego
92 Offices
34,000 Employees
47 Benefits Hiring Now

Spectrum San Diego is a high tech security innovator, specializing in ultra-low-dose X-ray screening systems.

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Spectrum San Diego
Acadian Companies
Healthtech • Professional Services • Security • Transportation
17 Offices
4,000 Employees
3 Benefits Hiring Now

Acadian Companies, founded in 1971, is a diverse group specializing in medical transportation, pre-hospital care, healthcare, safety, security, training, and charter flight services.

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Acadian Companies
Viking Group Inc.
Professional Services • Security • Industrial • Manufacturing
32 Offices
333 Employees
36 Benefits Hiring Now

Viking Group Inc. designs, manufactures, and distributes fire protection and life safety systems, offering a comprehensive range of products and global services.

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Viking Group Inc.
NETSYNC
Cloud • Information Technology • Security • Cybersecurity
10 Offices
450 Employees
11 Benefits Hiring Now

Netsync specializes in collaboration & unified communications, data center and cloud, network infrastructure and others. NETSYNC is an NMSDC-certified minority business enterprise (MBE), federally certified woman-owned small business (WOSB), and HUB-certified value-added reseller (VAR), specializing in the implementation of comprehensive IT life cycle solutions for a wide array of organizations. As a Cisco Gold, Master Collaboration, and Master Security Partner; an HP...

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NETSYNC
Vivint
Hardware • Internet of Things • Other • Security
26 Offices
10,001 Employees
30 Benefits Hiring Now

Vivint Smart Home is a leading smart home company in North America. Vivint delivers an integrated smart home system with in-home consultation, professional installation and support delivered by its Smart Home Pros, as well as 24/7 customer care and monitoring. Dedicated to redefining the home experience with intelligent products and services, Vivint serves more than 1.7 million customers throughout the...

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Vivint
ECS
Artificial Intelligence • Cloud • Information Technology • Security • Software
19 Offices
2,129 Employees
19 Benefits Hiring Now

ECS, a segment of ASGN (NYSE: ASGN), delivers advanced solutions and services in cloud, cybersecurity, artificial intelligence (AI), machine learning (ML), application and IT modernization, and science and engineering. The company solves critical, complex challenges for customers across the U.S. public sector, defense, intelligence and commercial industries. ECS maintains partnerships with leading cloud, cybersecurity, and AI/ML providers and holds specialized certifications...

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ECS

ECS's Top Stability & Growth Strengths

Strong Market Position & Advantage: Prime positions and large task orders on marquee federal programs (e.g., CISA CDM Data Services, NIH NIAID ITSSS BPA, FBI ITSSS‑2) indicate trusted execution on mission‑scale cyber/data work. Awards on OASIS+ and DARPA TASS further reinforce positioning in targeted federal niches.

Strategic Partnerships: Partner accolades such as Elastic’s 2024 Services Partner of the Year and long‑running AWS MSP status demonstrate strong ecosystem ties in security and cloud. Additional collaborations (e.g., SAS health‑AI) bolster credibility across AI, data, and cyber stacks.

Future-Ready Strategy: A trailing‑twelve‑month book‑to‑bill above 1.0 and prime access to vehicles like OASIS+, ITSSS‑2, and Treasury PROTECTS signal a pipeline set up for conversion. Workforce scale near 4,000 and specialization in applied AI/ML and cyber align with forecast federal demand.

Research Innovations Inc.
Security • Cybersecurity
4 Offices
190 Employees
3 Benefits Hiring Now

Research Innovations is a small technology company focused on the development and application of emerging technologies that solve complex problems within the Defense and Intelligence communities.

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Research Innovations Inc.
PINKERTON
Security
56 Offices
1,604 Employees
9 Benefits Hiring Now

Pinkerton traces its roots to 1850 when Allan Pinkerton founded Pinkerton's National Detective Agency. Today, Pinkerton offers organizations a range of comprehensive risk management services from security consulting and investigations to executive protection, employment screening and protective intelligence. With employees and offices worldwide, Pinkerton maintains an unmatched reputation for protecting clients and their assets around the globe.

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PINKERTON
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Allied Fire Protection
5 Offices
348 Employees
Hiring Now

Allied Fire Protection is dedicated to protecting lives and property through expert fire protection solutions. From our corporate headquarters in Houston, we proudly serve communities across Austin, San Antonio, Laredo, the Rio Grande Valley, Dallas/Fort Worth, Tampa, and Nashville — delivering safety, reliability, and peace of mind wherever we go.

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Allied Fire Protection
Two Six Technologies
Information Technology • Security • Cybersecurity
10 Offices
206 Employees
21 Benefits Hiring Now

Two Six Technologies provides cybersecurity and advanced technology solutions that support missions critical to U.S. national security. Our expertise includes R&D, innovation, productization and implementation in the technology fields of cyber, data science, mobile, microelectronics and information operations. We offer a family of operationally deployed products including Pulse, IKE™, SIGMA™, 8Wire™ and others. Major customers include DARPA, Department of State, U.S. Cyber...

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Two Six Technologies
SiteOwl
Security • Software
Fully Remote
12 Employees
19 Benefits Hiring Now
SiteOwl is a startup and B2B SaaS application used to design, install, and maintain physical security systems

SiteOwl (https://siteowl.com/) is a startup that sells a B2B SaaS application that enables customers to design, install, and maintain physical security systems. Our primary customers are system integrators and corporate physical security teams. The best analogy for our product is Google Maps for physical security systems. System designers upload their real-world floor plans, then drag various types of pins representing...

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SiteOwl
Arctic Wolf
Security • Software • Cybersecurity
7 Offices
810 Employees
6 Benefits Hiring Now

The cybersecurity industry has an effectiveness problem. Every year new technologies, vendors, and solutions emerge, and yet despite this constant innovation we continue to see high profile breaches in the headlines. All organizations know they need better security, but the dizzying array of options leave resource-constrained IT and security leaders wondering how to proceed. At Arctic Wolf, our mission is...

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Arctic Wolf

Arctic Wolf's Top Stability & Growth Strengths

Strong Market Position & Advantage: Independent analyst recognitions (e.g., IDC MarketScape Leader for 2024 MDR and Frost Radar 2024) and consistent inclusion in major landscapes position Arctic Wolf in the upper tier of MDR/security operations. Customer-recognition programs such as Gartner Peer Insights Customers’ Choice and a stated base of 10,000+ customers further reinforce market standing.

Product Line Growth: The Aurora platform broadened with launches like Aurora Endpoint Security (2025) and acquisitions of BlackBerry’s Cylance assets and Sevco Security, adding endpoint and exposure management capabilities. AI-led initiatives (e.g., “agentic SOC” and Aurora Superintelligence) indicate continued expansion of security operations functionality.

Market Expansion: The company reports protecting more than 10,000 customers globally and cites launches in Japan and Singapore in 2025, indicating growing geographic reach. Ongoing channel and technology alliances (e.g., ESET integration and MSP program expansion) suggest a strengthening go-to-market engine.

Convergint Federal Solutions
Professional Services • Security • Cybersecurity • Defense
21 Offices
350 Employees
Hiring Now

Convergint Federal Solutions is a global, service-based systems integrator and a wholly owned subsidiary of Convergint Technologies. The company provides a suite of programmatic and project management tools to facilitate system optimization at federal and military installations worldwide. They specialize in deploying innovative, scalable security and cybersecurity solutions that ensure consistent risk management and strict adherence to federal regulatory compliance...

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Convergint Federal Solutions
IntelliGenesis LLC
Big Data • Information Technology • Security • Software • Analytics
5 Offices
88 Employees
31 Benefits Hiring Now

Our Mission: Our Mission is to enrich our customers’ missions by applying our multi-disciplined analysts, mission-focused software developers, and machine learning data scientists to solve and support our customers’ most difficult challenges. Our dedication to our employees reinforces our commitment to the customers’ mission success and National Security. Our ability to effectively collaborate and innovate, reinforces our partnership with the customer....

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IntelliGenesis LLC
Signal 88 Security
21 Offices
950 Employees
15 Benefits Hiring Now

Signal 88 Security is a security and investigations company providing virtual monitoring, fire watch, and patrolling services.

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Signal 88 Security
Linx Security
Computer Vision • Information Technology • Security • Cybersecurity
12 Offices
52 Employees
23 Benefits Hiring Now

The Linx Identity Security platform enables identity, security, and IT ops teams to finally control the whole identity lifecycle. A radical departure from legacy identity security solutions, Linx untangles the complex, ever-evolving web of identity security. Integrating smoothly with your IAM stack, Linx pulls together all your organization’s identity data—organizing it neatly to reveal the hidden links between your employees,...

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Linx Security
Carrier
Security
22 Offices
15,324 Employees
29 Benefits Hiring Now

As the leading global provider of healthy, safe and sustainable building and cold chain solutions, Carrier Global Corporation is committed to making the world safer, sustainable and more comfortable for generations to come. From the beginning, we’ve led in inventing new technologies and entirely new industries. Today, we continue to lead because we have a world-class, diverse workforce that puts...

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Carrier

Carrier's Top Stability & Growth Strengths

Strong Market Position & Advantage: Carrier is consistently described as a top‑three global HVAC player and a long‑time share leader in North America. Commercial HVAC orders and data‑center demand indicate momentum in key higher‑value segments.

Future-Ready Strategy: The portfolio has been reshaped into a pure‑play climate company through the Viessmann Climate Solutions acquisition, expanding European heat‑pump and residential exposure. These moves concentrate the business on energy‑transition areas such as heat pumps and integrated home energy systems.

Healthy Cash Flow: Free cash flow generation remained strong, with approximately $0.9 billion in Q4 2025. Capital deployment plans including share repurchases indicate ongoing liquidity and financial flexibility.

TIAG
Information Technology • Security
6 Offices
348 Employees
Hiring Now

Delivering transformative technology solutions for the public sector and across the Department of Defense, TIAG drives modernization through synergistic processes and unique approaches. Our people are brilliant, well-credentialed business and technology experts who provide nimble, creative solutions to multidimensional problems. Our collective expertise results in refined, comprehensive services that truly make a difference. Customers choose TIAG because we drive genuine...

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TIAG
General Dynamics Mission Systems
Aerospace • Security • Software
35 Offices
8,438 Employees
35 Benefits Hiring Now

At General Dynamics Mission Systems, a business unit of General Dynamics, we develop mission critical C4ISR solutions across the land, sea, air, space and cyber domains, but that doesn’t tell our whole story. When downed pilots are isolated in enemy territory, our equipment gives them a lifeline to call home. When a student opens a textbook to learn about the universe,...

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General Dynamics Mission Systems

General Dynamics Mission Systems's Top Stability & Growth Strengths

Resilient & Sustainable Growth: Technologies revenue and operating earnings increased year over year in 2025, extending a multi-year pattern of modest gains. Orders exceeded revenue with a multi-year run of book-to-bill above 1×, pointing to continued forward demand rather than a one-off bump.

Strong Market Position & Advantage: General Dynamics is consistently positioned among the top global defense contractors, providing durable scale and relevance for the mission-systems portfolio. Within specific niches like Type-1/HAIPE encryption and Navy shipboard radios, long-running program pull and large deployed volumes support a leadership footing.

Future-Ready Strategy: GDMS holds prime or key roles on major space-ground and protected satcom programs (e.g., MUOS ground infrastructure and SDA ground management/integration), which align with long-duration modernization priorities. Recent marquee awards in space and communications extend the runway for future work and reinforce positioning in emerging architectures.

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