Top 10 System Integrator Companies in the US

Unlock the full potential of your business with top-tier System Integrator companies in the United States.

Our curated list showcases industry-leading firms specializing in seamlessly connecting disparate systems, applications, and data sources.

Whether you’re looking to streamline operations, enhance data flow, or modernize your IT infrastructure, these expert firms offer tailored solutions to drive efficiency and innovation.

As digital transformation accelerates, more and more organizations rely on various systems, software, and applications to operate.

The average company uses up to 130 SaaS apps at any given time, making it easy to quickly become overwhelmed by the range of different digital tools and hardware at their disposal.

Without proper integration, these systems operate in silos, making it difficult for data to flow smoothly across the organization.

As the technology we depend on becomes more diverse and dispersed, organizations need new ways to bring their systems together in a unified environment. This is where system integrator companies can help.

What Are System Integration Services?

System integration services refer to the process of bringing together various IT systems, hardware components, and software applications into one unified and efficiently functioning system.

These services are offered by specialized system integrator companies to ensure seamless communication between different technologies within an organization.

System integration services include planning, designing, implementing, and maintaining interconnected systems, enabling better data flow, improved productivity, and cost savings.

Whether integrating automation systems in manufacturing or IT infrastructure in enterprises, system integrator companies play a vital role in reducing complexity and ensuring that different technologies work together as a cohesive, streamlined solution.

What Does a System Integration Company Do?

A system integration company specializes in designing and implementing solutions that connect different hardware, software, and network systems into a cohesive, functional infrastructure.

These companies evaluate an organization’s technical environment and tailor integration strategies that enable systems to communicate effectively, streamline operations, and reduce redundancy.

Typical services include:

PLC and SCADA programming
Industrial automation
IT/OT convergence
Data analytics integration
Cloud and edge computing solutions
Cybersecurity implementation
System upgrades and retrofits

By unifying fragmented technologies, system integration companies help businesses improve efficiency, enhance reliability, and support digital transformation across industries like manufacturing, energy, life sciences, and logistics.

Why do Companies Use System Integrators?

Companies use system integrators to streamline operations, reduce complexity, and improve the performance of their technology infrastructure.

As businesses adopt more digital tools, machines, and platforms, these systems often come from different vendors and may not communicate well with each other.

System integrator companies bring expertise in connecting these disparate technologies into a unified, efficient solution.

Here are key reasons companies use system integrators:

Seamless automation of industrial or business processes
Improved data flow across departments and systems
Reduced downtime and operational errors
Cost savings through optimized system performance
Customized solutions tailored to industry-specific needs

System integrators also help future-proof operations by enabling scalability, flexibility, and easier adoption of emerging technologies like IoT, AI, and cloud computing.

Top 10 System Integrator Companies in the US

1. RoviSys

RoviSys ranks as the number one among system integrator companies in the United States, with a reported system integration revenue of over $325 million in 2025.

Headquartered in Aurora, Ohio, RoviSys has built a strong reputation for delivering comprehensive automation and control solutions across industries such as pharmaceuticals, oil and gas, chemicals, and food & beverage.

As one of the leading system integrator companies, RoviSys offers services that span from process control and manufacturing execution systems (MES) to industrial IT and cybersecurity.

What sets RoviSys apart from other system integrator companies is its ability to offer vendor-neutral solutions tailored to the specific needs of each client.

With over 1,400 employees and a global footprint, the company is known for its innovation, long-term client partnerships, and dedication to digital transformation.

Among all system integrator companies in the U.S., RoviSys continues to lead through its engineering excellence and future-ready automation strategies.

visit company

2. Prime Controls

Prime Controls stands proudly at the number two position among system integrator companies in the U.S., generating an impressive $306 million in system integration revenue in 2025 .

Based in Lewisville, Texas, this firm has grown to over 450 skilled professionals across numerous locations, delivering vendor-neutral automation and control solutions to industries like oil & gas, water/wastewater, and critical infrastructure.

As a certified member of the Control Systems Integrator Association and an Inductive Automation Premier Integrator, Prime Controls demonstrates its technical excellence and leadership in IIoT and SCADA architectures.

What distinguishes Prime Controls among system integrator companies is its full-service, “total system responsibility” model—from system design and DCS/PLC programming to I&C construction and 24/7 maintenance.

Founded in 1991, the company has consistently climbed Control Engineering’s SI Giants list, showcasing a strong blend of deep technical capability, client trust, and comprehensive execution.

visit company

3. Quad Plus

Quad Plus secures the #3 position among system integrator companies in the U.S., generating an estimated $60 – 77 million in annual revenue in 2025 .

Based in New Lenox, Illinois, Quad Plus delivers vendor-neutral industrial control systems, system integration solutions, and power services across sectors such as oil & gas, mining, pulp & paper, and utilities.

What distinguishes Quad Plus among system integrator companies is its full‑lifecycle, turnkey approach: from design and engineering to commissioning, remote support, and retrofitting legacy systems.

With a team of roughly 150–250 engineers and control specialists, it combines deep field expertise with modern 3D cabinet design tools to enhance project accuracy and reduce downtime.

Known for agile execution and process-driven execution, Quad Plus stands out as a dynamic mid-tier player in the system integrator companies landscape.

visit company

4. Andritz

Andritz ranks #4 among system integrator companies in the U.S., generating approximately $252.6 million in system integration revenue in 2025 .

Headquartered in Graz, Austria, but with a strong U.S. presence, Andritz provides advanced turnkey solutions for hydropower, pulp & paper, metals, and environmental technologies—making it a key player among system integrator companies.

What distinguishes Andritz among system integrator companies is its full-lifecycle approach: they design, manufacture, install, and service complete processing plants and equipment.

Their U.S. strategy includes boosting service-oriented offerings—order backlog climbed ~20% in Q1 2025, driven by renewables and pulp projects.

Additionally, Andritz strengthened its environmental technology portfolio by acquiring LDX Solutions in early 2025, enhancing its green tech and emissions-reduction capabilities in the U.S. market.

Through its global engineering expertise, lifecycle services, and renewed focus on decarbonization solutions, Andritz secures its position as a top-tier system integrator company delivering complex plant automation and environmental projects.

visit company

5. Wood

Wood ranks #5 among system integrator companies in the U.S., with an impressive $209 million in system integration revenue reported for 2025 .

Although headquartered in Aberdeen, Scotland, Wood has a significant U.S. presence and is considered a major player among system integrator companies thanks to its expansive engineering and consulting services in energy, materials, and infrastructure sectors .

What sets Wood apart from other system integrator companies is its broad, services-centric model encompassing asset management, engineering, procurement, and construction.

Their robust U.S. pipeline—backed by a $6 billion global backlog—drives growth in carbon capture, hydrogen, and sustainable solutions.

With around 36,000 employees operating across North America, Wood blends global scale with regional agility, enabling it to deliver complex, multidisciplinary projects that meet evolving market demands.

By combining deep technical expertise, sustainability-driven strategies, and a diversified service portfolio, Wood exemplifies how system integrator companies can thrive in the modern industrial landscape.

visit company

6. Wunderlich‑Malec Engineering

Wunderlich‑Malec Engineering ranks #6 among system integrator companies in the U.S. Known for its comprehensive, vendor-neutral approach, the 100% employee-owned firm reported system integration revenues of over $206 million in 2025.

Based in Eden Prairie, Minnesota, Wunderlich‑Malec employs more than 400 engineering professionals across North America, delivering advanced automation, control systems, IT/OT convergence, and architectural services .

What truly sets this company apart among system integrator companies is its deep vendor partnerships—with industry leaders like Rockwell Automation, Siemens, Honeywell, and GE Digital—plus certification credentials across platforms such as AVEVA and Inductive Automation.

They bring full lifecycle expertise—from planning and design to commissioning, cybersecurity, and long-term support.

With a commitment to sustainability, IoT-driven insight, and digital transformation, Wunderlich‑Malec is a trusted partner for industries including life sciences, power, water/wastewater, and food & beverage.

visit company

7. Albireo Energy

Albireo Energy ranks seventh among system integrator companies in the U.S., bringing over $190 million in annual system integration revenue in 2025.

Based in Edison, New Jersey, Albireo is a leader in building automation systems (BAS) and energy services for mission-critical facilities such as data centers, labs, hospitals, universities, commercial campuses, and military installations .

What sets Albireo Energy apart from other system integrator companies is its technology-agnostic, full-lifecycle approach: from system design and PLC programming to commissioning, maintenance, analytics, and energy procurement.

With over 1,000 employees nationally and strategic acquisitions—like EMS Technologies in Washington, D.C.—the firm has expanded both capabilities and geographic reach.

Regularly lauded for its engineering excellence, Albireo was named Systems Integrator of the Year in 2020.

By integrating advanced BAS, remote monitoring, fault detection, and analytics, Albireo delivers tailored, high-performance solutions that optimize building efficiency, sustainability, and operational resilience—solidifying its position among top-tier system integrator companies.

visit company

8. E Tech Group

E Tech Group ranks #8 among system integrator companies in the U.S., earning its place through a blend of scale, innovation, and award-winning service.

Though proprietary revenue details remain confidential, it surpassed the $50 million mark in 2025, placing it solidly within the top ten .

Based in West Chester, Ohio, this firm was honored as the 2025 System Integrator of the Year by Control Engineering and Plant Engineering—a prestigious recognition in the industry.

With over 600 engineers and technicians across North America, E Tech Group offers full-lifecycle automation, industrial IT and OT convergence, cybersecurity services, digital twins, machine control, and custom software solutions.

What truly sets E Tech Group apart among system integrator companies is its client-centric “Main Automation Partner” model, delivering tailored, vendor-neutral solutions across mission-critical sectors like life sciences, data centers, food & beverage, and more.

Their expertise spans digital transformation, IT/OT risk assessments, SCADA, MES, and advanced robotics. This depth of capability and commitment to excellence solidify their top-tier position in the system integrator landscape.

visit company

9. BW Design Group

BW Design Group secures the #9 spot among the top system integrator companies in the U.S., with approximately $144.5 million in system integration revenue in 2025 .

Based in St. Louis, Missouri, this firm blends industrial engineering and AEC (Architecture, Engineering & Construction) services, delivering full-lifecycle offerings from strategy and design through construction and system integration.

What distinguishes BW Design Group among system integrator companies is its unique Manufacturer’s Mindset™—thinking like their clients, focused on turning capital strategies into commercial success.

They’re ranked #8 on Control Engineering’s SI Giants list and serve industries such as food & beverage, life sciences, advanced technology, and industrial manufacturing.

With deep expertise in digital transformation, cybersecurity, and automation, BW Design Group offers vendor-neutral, AEC-integrated solutions that help clients bridge OT & IT, improve efficiency, and secure operations. Their strong domain focus and integrated model enable them to deliver tailored, impactful system integration results.

visit company

10. Thermo Systems

Thermo Systems holds the #10 spot among U.S. system integrator companies, earning about $135.98 million in system integration revenue in 2025 .

Headquartered in East Windsor, NJ, and founded in 1998, Thermo Systems is a full-service control systems integration partner serving sectors like energy, life sciences, mission-critical facilities, and district energy.

What sets Thermo Systems apart among system integrator companies is their turnkey, vendor-neutral approach: they manage full project lifecycles—from automation design, panel fabrication, programming, construction, commissioning, to lifecycle support and 24/7 service .

With 20+ locations worldwide, over 400 employees, and deep expertise in microgrids, battery systems, BMS, OIT/ICS resilience, and GMP-compliant facilities, Thermo Systems combines technical depth with operational agility.

By consistently delivering on-time, on-budget automation solutions that emphasize safety, system reliability, and sustainability, Thermo Systems secures its position among the top-tier system integrator companies in the U.S.

visit website

Conclusion

The top system integrator companies in the U.S. are driving innovation across industries by delivering advanced automation, control, and digital transformation solutions.

Their expertise ensures efficiency, safety, and scalability in complex operations, making them critical partners for businesses navigating Industry 4.0 and the evolving industrial technology landscape.

FAQs

What do system integrator companies do?
System integrator companies design, implement, and manage complex automation and control systems by integrating hardware, software, and networking solutions. They help businesses streamline operations, improve productivity, and ensure seamless communication between different technologies and systems.

Which industries use system integrator companies?
Industries such as manufacturing, energy, oil & gas, life sciences, water/wastewater, food & beverage, and data centers rely on system integrator companies for automation, process control, SCADA systems, and digital transformation solutions.

What is the value of using a system integrator company?
System integrator companies provide technical expertise, reduce downtime, and improve operational efficiency. They also ensure that various components—such as PLCs, sensors, software, and databases—work together effectively, which is vital for modern industrial environments.

How do system integrator companies differ from automation vendors?
While automation vendors sell proprietary products, system integrator companies offer vendor-neutral solutions, allowing them to customize systems based on client needs rather than specific brands or platforms.

What certifications or standards should top system integrator companies meet?
Reputable system integrator companies often hold certifications like CSIA (Control System Integrators Association) membership, ISO 9001, and partnerships with major platforms such as Rockwell, Siemens, AVEVA, or Inductive Automation. These credentials reflect quality, safety, and technical competency.

Top 10 System Integrator Companies in the US

What Are System Integration Services?

What Does a System Integration Company Do?

Why do Companies Use System Integrators?