An independent firm built on field-earned conviction.
Collier Engineering exists to prove that a U.S. construction and engineering firm can be demanding and humane at the same time — rigorous about documentation, uncompromising about safety, and genuinely good to work with.
Founder & Chief Executive Officer
Douglas Collier
Leads the firm the way he ran his first crews — early, prepared, and refusing to confuse motion with progress.
From the field to the front of the firm
Douglas Collier did not start in a corner office. He started in the field — on fuel sites and industrial pours where the difference between a good day and a dangerous one came down to preparation, discipline, and whether the people in charge actually understood the work.
Those years left him with two convictions that still define Collier Engineering. The first is that engineering judgment cannot be delegated to a spreadsheet — it has to live with people who have walked the site, read the ground, and stood next to the equipment. The second is that safety and quality are not competing priorities with schedule; they are how you protect the schedule. A crew that works safely and builds it right the first time is the fastest crew on any honest program.
Why he founded Collier Engineering
Douglas built this company to prove that a U.S. construction and engineering firm can be demanding and humane at the same time — rigorous about documentation, uncompromising about safety, and genuinely good to work with. He leads the firm the way he ran his first crews: by being early, being prepared, and refusing to confuse motion with progress.
He stays close to the work that matters most — the high-consequence builds in oil and fuel infrastructure, industrial facilities, and energy projects where there is no margin for the careless. Under his leadership, Collier Engineering measures itself not by how loudly it markets, but by whether the last client would hire the firm again. That, to Douglas, is the only credential that counts.
The convictions that show up on every project.
These are not slogans. They are how the work actually gets sequenced, inspected, and handed over.
Prove it on paper
Inspection-and-test plans, hold points, and turnover documentation are how we make quality verifiable — for the owner and for ourselves.
Plan hazards out
The safest task is the one whose hazard was engineered away in planning. Safety starts on the drawing, not at the toolbox talk.
Keep judgment in the field
The people making calls have walked the ground and stood next to the equipment. Experience is not delegated to a spreadsheet.
Finish clean
A clean turnover and an honest as-built record are the difference between a job that ends and a relationship that continues.
Broad enough to deliver, focused enough to be excellent.
Collier Engineering concentrates on the build categories where rigor is rewarded — and brings the same discipline to each.
- Constructability review & phased execution planning
- Heavy civils, earthworks, and structural foundations
- Fuel and oil infrastructure civil packages
- Industrial and energy facility construction
- Inspection, test, and quality documentation regimes
- Owner, engineer, and third-party inspector coordination
An honest word on claims
We will not invent certifications, awards, client logos, or project counts to look larger than we are. Representative content on this site is labeled as such. Where a project requires specific approvals or credentials, we pursue and confirm them — and we tell you exactly where things stand.
Five sectors. The U.S. market. The work that has to be right the first time.
We are deliberately focused. Trying to be the right firm for every project is a fast way to be the wrong firm for the projects that matter most.
Our concentration
- Oil & fuel infrastructure — terminals, pipeline interfaces, retail networks
- Petrol stations — new builds, remodels, and brand programs
- Industrial construction — facilities, foundations, supporting civils
- Civil & site works — earthworks, utilities, large-format development pads
- Energy facilities — substations, generation balance-of-plant civils
Geographic scope
Collier Engineering serves clients across the United States. We staff and mobilize where the work is, and we are deliberate about taking on programs we can run with the same standard of attention as the closest one.
Lean enough to be present. Disciplined enough to scale.
The firm is structured so that the people responsible for the work are close to it. We grow when we have leaders who can carry the standard — not when we run out of business cards.
Directors who own a discipline
Engineering, operations, safety, and client relationships are each owned by a director who is in the room when decisions get made — not a lane on an org chart.
Crews that share the standard
We train, screen, and partner with field teams that can carry the same documentation and safety habits to every site — regardless of who is signing the paychecks that week.
A back office sized to the work
Estimating, controls, and document management exist to make field decisions sharper — not to add layers between the field and the answer.