Resources / Core Concepts
What a System Integrator Actually Does in a Warehouse Automation Project
A warehouse automation system integrator handles design, controls, commissioning, and support. Learn when you need one, how they charge, and how to choose.
6 min read
· Updated
November 2026
At a glance
The role
A warehouse automation system integrator makes equipment and software from several suppliers work as one system, and takes responsibility for the whole.
What they do
Design and simulation, equipment procurement, controls and WCS software, installation, safety, commissioning, training, and long-term support.
When you need one
Multi-vendor and fixed-infrastructure projects usually do. Single-vendor systems that work inside your existing layout may not.
A warehouse automation system integrator designs, sources, installs, and commissions automation from multiple suppliers, and is accountable for the equipment, controls, and software working together as one system. The work spans data analysis and simulation, equipment procurement, PLC and warehouse control software, installation, safety, acceptance testing, training, and long-term support.
A warehouse automation project rarely comes from one company. The racking comes from one supplier, the conveyor from another, the sorter or robots from a third, and the WMS was installed years ago by someone else. Each vendor will tell you its piece works. The harder question is who makes the pieces work together, and who answers the phone when the sorter and the WMS disagree at 2 a.m. in the middle of peak.
That is the system integrator's job. This guide explains what an integrator does at each stage of a project, when you need one and when you may not, and how to choose one. For the building and layout decisions that come before integration, see our warehouse design guide.
What is a warehouse automation system integrator?
A system integrator designs, sources, installs, and commissions an automation system built from several suppliers' equipment and software, and takes responsibility for it working as one system. In warehousing, integrators come in a few types:
Independent integrators that select equipment from many manufacturers.
Manufacturer-aligned integrators that mainly design around one or a few equipment brands.
Turnkey suppliers that make most of the equipment and integrate it themselves.
Controls and software integrators that focus on PLC programming, warehouse control systems (WCS), and warehouse execution systems (WES).
Robot cell integrators that build robotic work cells around a specific task.
An integrator is not the same as a consultant, who designs but does not build, or a WMS implementer, who configures software but not equipment. Some firms do all three, so ask which role they are playing on your project.
What an integrator does, stage by stage
Discovery and data analysis
The integrator studies your order profiles, SKU data, storage needs, and growth plans to set design requirements. Weak data here produces a system sized for the wrong business.
Concept design and simulation
They develop layout options and test them, often with simulation models that run your order data through the proposed design, and with emulation that tests control logic before equipment arrives. Ask to see the assumptions behind any capacity figure they quote.
Equipment selection and procurement
They specify equipment, run bids with manufacturers, and manage lead times and deliveries. Ask whether they mark up equipment, and by how much.
Controls and software
They program PLCs, configure or build the WCS or WES that directs conveyors, sorters, and robots, and build the interfaces to your WMS. This layer decides how well the pieces behave together, and it is also where long-term dependence on the integrator starts.
Installation
They manage mechanical and electrical installation, subcontractors, and site safety, often phased around a live operation that cannot stop.
Safety
OSHA states that "There are currently no specific OSHA standards for the robotics industry," so consensus standards carry much of the load. ANSI/A3 R15.06-2025 Part 2 sets safety requirements for industrial robot applications and robot cells. If the project includes mobile robots, ask which mobile robot safety standards the integrator designs to. Good integrators also design for maintenance and fault recovery, since OSHA notes that "many robot accidents occur during non-routine operating conditions."
Commissioning and acceptance
They test equipment before it ships (factory acceptance testing), test it again on site (site acceptance testing), then run integrated tests with your WMS and real orders until the system meets the agreed performance criteria. For how these stages translate into a schedule, see how long warehouse robot deployment takes.
Training and handover
They train operators and maintenance staff and hand over documentation, drawings, spare parts lists, and, if your contract says so, source code.
Support
After go-live they provide service, spare parts, software updates, and changes as your operation grows.
SKU fit check
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When you need a system integrator
Several equipment types must work together, such as conveyors, sorters, AS/RS, and robots.
The project involves fixed infrastructure with its own controls.
You are fitting out a new building or doing a major retrofit.
Your team has no controls engineering in-house.
You want one design standard across several sites.
When you may not need one
A single vendor supplies, installs, and supports the whole system and connects it to your WMS directly.
The automation works inside your existing layout and process, with no new conveyance or controls.
You are making a small, contained change that the original integrator or vendor can handle.
Either way, ask one question: who is accountable for system performance across vendor boundaries? If the answer is nobody, you are the integrator.
Where integration projects go wrong
Gaps between scopes. Each vendor's scope ends at its own equipment, and the interfaces between them belong to nobody. Map every handoff and assign an owner.
Late WMS involvement. Interface changes often need your WMS provider, on its own schedule. Bring it in during design, not commissioning.
Vague acceptance criteria. "The system works" is not a test. Write measurable criteria and test them with real orders.
No plan for after handover. Maintenance staff trained too late and spares never stocked turn small faults into long outages.
Fit call
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How system integrators charge, and where cost hides
Fixed price gives cost certainty for a defined scope. Anything outside it becomes a change order, so the scope document matters.
Time and materials suits uncertain scope but needs strong project control on your side.
Equipment markup may be built into the price. Ask for it to be shown separately.
Software licenses for a proprietary WCS or WES can carry an ongoing fee and can tie future changes to that integrator.
Code and documentation ownership decides whether another firm can support the system later. Settle it in the contract.
Site walkthrough
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How to choose a warehouse automation integrator
Relevant references. Similar operations, similar scale, and similar equipment, ideally a site you can visit.
Independence. Which manufacturers they partner with, and whether that limits the options they propose.
In-house controls and software. Who writes the PLC and WCS code, and whether that work is subcontracted.
Simulation capability. Whether they can test the design against your data before you commit.
Certifications. A3's robot integrator certification involves pre-qualification, an on-site audit, a practical assessment of key personnel, a robot safety risk assessment, and an exam. CSIA Certification provides third-party validation against the Control System Integrators Association's best practices in 10 key areas, including project management, quality management, and service and support.
Project management. A named project manager, a realistic schedule, and a clear change-order process.
Support after go-live. Response times, local service coverage, and spare parts.
Financial stability. Integrators carry real project risk. Make sure yours will be around for the life of the system.
Where Avatar fits
Avatar robots pick from traditional racks and bins and drop into your existing workflows, with no facility redesign or re-racking, and they can use the same scanner devices as your staff. That keeps an Avatar project focused on your current process rather than new infrastructure. Learn more about the Avatar platform.
Frequently Asked Questions
What does a system integrator do in warehouse automation?
A system integrator designs the automation system, selects and buys equipment, programs controls and warehouse control software, manages installation, and commissions the system until it meets agreed performance. They also train your staff and provide support after go-live. Their core value is accountability for the whole system working together.
Do I need a system integrator for warehouse robots?
You usually need one when several types of equipment and controls must work together, or when the project involves conveyors, sorters, or AS/RS. If a single vendor supplies, installs, and supports a system that works in your existing layout and connects to your WMS, you may not. Either way, someone must be accountable for performance across vendor boundaries.
What is the difference between a system integrator and an equipment manufacturer?
A manufacturer builds and supports its own equipment. An integrator combines equipment from several manufacturers, adds controls and software, and takes responsibility for the system as a whole. Some manufacturers also act as integrators for systems built mainly from their own products.
How do I choose a warehouse automation integrator?
Look for references in operations like yours, in-house controls and software capability, simulation, and a strong support model after go-live. Check for certifications such as A3's robot integrator certification or CSIA Certification. Settle ownership of code and documentation in the contract.
Sources
1. Occupational Safety and Health Administration (n.d.). Robotics: Standards. U.S. Department of Labor.
2. Association for Advancing Automation (2025). New ANSI/A3 R15.06-2025 American National Standard for Industrial Robot Safety Now Available for Purchase (press release, September 10, 2025). Business Wire.
3. Occupational Safety and Health Administration (n.d.). Robotics. U.S. Department of Labor.
4. Association for Advancing Automation (n.d.). Become a Certified Robot Integrator. A3.
5. Control System Integrators Association (n.d.). CSIA Certification. CSIA.
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