We design mechanical, electrical, plumbing, and technology systems for institutional facilities nationwide. Our team has contractor experience, so we engineer systems knowing how they'll actually be built.

Full-scope MEPT engineering with constructability focus.

What We Do

Full-scope MEPT capabilities

Mechanical systems, electrical infrastructure, plumbing, low-voltage systems, structured cabling systems, building systems coordination.

True design partners

We work with design teams, construction managers, and program managers to support scope development and deliver fully coordinated design documents from concept to record drawings - applying constructability principles across all delivery methods, from Design-Build to Design-Bid-Build to Job-Order-Contracting.

Design-build delivery

We work within design-build teams from concept through construction, bringing constructability thinking to every delivery method. Systems coordinated during design, not figured out in the field.

Construction phase support

Available on-site when needed. Responsive during construction. Engineering partners who show up.

Who We Are

Our team brings contractor experience. Everyone here has worked in the field solving the problems bad engineering creates. We understand constructability because we've stood in jobsites dealing with coordination issues that shouldn't exist.
Nationwide institutional work. We're contracted to help write industry standards for low-voltage and structured cabling systems. Our projects span coast to coast - facility upgrades, multi-location programs, pilot programs and complex infrastructure.
Lean by design. When you work with us, you get the engineers doing the work. No account managers between you and answers.

How We Work

1

We understand your project constraints.

Timeline, budget, phasing, existing conditions - we engineer knowing what you're actually working with.
2

We lead scope development

Understanding what you actually need is half the battle. We invest time up front - asking questions, identifying constraints, defining accurate scope - so you don't waste time on revisions later.
3

We design for constructability.

Details that match what crews can execute. Systems coordinated before they're in the field. Risks identified and addressed before they become project delays. Clear documentation that answers questions in design before they're asked in the field.
4

We're available during construction.

On-site when needed. Responsive when coordination issues arise. Available to solve problems before they become change orders.
5

You deliver on time, on budget.

Projects built right the first time, with fewer surprises eating your schedule.

Let's
Talk

Start a project conversation.

Have a facility program or complex build that needs engineering partners who understand the field? Reach out to discuss scope and timeline and we'll determine if we're a good fit for your project.
info@calliott.net

Join our team.

Experienced engineers who want challenging work on institutional-scale projects - we're growing.
careers@calliott.net
Based in St. Louis, MO.
Serving clients nationwide.