Company lists · Data refreshed September 2026

Top 25 Infrastructure engineering staffing companies based in Portland, United States

Name: Infrastructure engineering staffing companies based in Portland, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 46 companies tracked

RevenueBase identified 46 infrastructure engineering staffing companies headquartered in Portland, United States as of September 2026 and tracks 1,989 professional contacts across them, including 900 with verified work emails. Across the United States, Houston is the largest hub for this category (320 companies); Portland has 46.

This list covers infrastructure engineering staffing companies headquartered in Portland, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

46Companies

1,989Contacts tracked

900Verified emails

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The 25 largest infrastructure engineering staffing companies based in Portland, United States

Ranked by team size

Top 25 of 46 infrastructure engineering staffing companies based in Portland, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure engineering staffing companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	David Evans And Associates, INC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	501-1,000	1,031 contacts →
	Indirect evidence “Since its founding in 1976 in Portland, Oregon, DEA has become a recognized leader for progressive and sustainable design and management solutions for complex transportation, land…” Source: RevenueBase Database · checked Sep 28, 2026
2	Allied Engineering	Partial evidence	Portland, ME, United StatesHQ checked Sep 28, 2026	11-50	135 contacts →
	Partial evidence “Allied Engineering (AEI) is now Salas O'Brien.” Source: RevenueBase Database · checked Sep 28, 2026
3	Vanderhouwen	Strong evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	201-500	133 contacts →
	Strong evidence “Locally founded, diversity-owned, and nationally certified by WBENC as a women-owned business, VanderHouwen is a premier staffing provider of technology, engineering, finance and…” Source: RevenueBase Database · checked Sep 28, 2026
4	Harper Houf Peterson Righellis INC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	51-200	101 contacts →
	Indirect evidence “Founded in Portland, Oregon in 1990, Harper Houf Peterson Righellis Inc.” Source: RevenueBase Database · checked Sep 28, 2026
5	Whpacific, An Nv5 Company	Indirect evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	1,001-5,000	78 contacts →
	Indirect evidence “WHPacific was acquired by NV5 in July of 2019.” Source: RevenueBase Database · checked Sep 28, 2026
6	ALL Star Labor And Staffing	Partial evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	11-50	53 contacts →
	Partial evidence “All Star Labor & Staffing, founded in Portland in 2009, is a boutique staffing agency that offers local companies a level of customer service and customization that larger…” Source: RevenueBase Database · checked Sep 28, 2026
7	Vlmk Engineering Design	Partial evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	11-50	47 contacts →
	Partial evidence “Founded in 1971 in beautiful Portland, OR, VLMK Engineering + Design provides structural and civil engineering services for a variety of clients in the A/E/C and development…” Source: RevenueBase Database · checked Sep 28, 2026
8	Specialized Recruiting Group	Partial evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	n/a	45 contacts →
	Partial evidence “Specialized Recruiting Group of Portland, OR is a full-service professional recruiting firm specializing in Information Technology, Engineering, Accounting/Finance…” Source: RevenueBase Database · checked Sep 28, 2026
9	Murraysmith	Partial evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	201-500	40 contacts →
	Partial evidence “In 2021, Murraysmith became Consor Engineers, integrating our decades of experience delivering high-quality water and transportation infrastructure projects for public agency…” Source: RevenueBase Database · checked Sep 28, 2026
10	Snyder Civil Engineering, LLC	Indirect evidence	Portland, CT, United StatesHQ checked Sep 28, 2026	11-50	33 contacts →
	Indirect evidence “Snyder Civil is a cohesive team of water system professionals based in central Connecticut.” Source: RevenueBase Database · checked Sep 28, 2026
11	Froelich Engineers	Partial evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	11-50	30 contacts →
	Partial evidence “Since 1983, Froelich Engineers has been delivering on-time, on-budget engineering services to leading owners, contractors, engineers, and developers across the country.” Source: RevenueBase Database · checked Sep 28, 2026
12	Peterson Structural Engineers, INC	Partial evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	11-50	29 contacts →
	Partial evidence “In 2026, PSE was acquired by Consor, a leading North American engineering and advisory firm.” Source: RevenueBase Database · checked Sep 28, 2026
13	Let's Work LLC	Partial evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	11-50	17 contacts →
	Partial evidence “Let's Work is a leading staffing firm based in Portland, OR, specializing in on-demand and specialized staffing solutions.” Source: RevenueBase Database · checked Sep 28, 2026
14	2kg Contractors, INC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “2KG Contractors is a professional construction company founded in 1989.” Source: RevenueBase Database · checked Sep 28, 2026
15	Lexicon Solutions	Strong evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	51-200	15 contacts →
	Strong evidence “Lexicon Solutions is a Portland, OR based full-service Information Technology and Engineering staffing firm that specializes in contract, contract-to-hire, direct placement, and…” Source: RevenueBase Database · checked Sep 28, 2026
16	Project Quality Solutions	Indirect evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “We are a Project & Quality Solutions (PQS) Firm dedicated in providing highly skilled professionals that support the companies we represent.” Source: RevenueBase Database · checked Sep 28, 2026
17	Humber Design Group, INC	Partial evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	11-50	12 contacts →
	Partial evidence “Humber Design Group provides civil engineering design services for projects throughout the Pacific Northwest - large, small, complex, straightforward, urban, suburban, private…” Source: RevenueBase Database · checked Sep 28, 2026
18	WDY Structural & Civil Engineers	Partial evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	11-50	11 contacts →
	Partial evidence “Structural and Civil Engineering Solutions” Source: RevenueBase Database · checked Sep 28, 2026
19	System Design Consultants, INC	Partial evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	11-50	9 contacts →
	Partial evidence “System Design Consultants, Inc.(SDC), is celebrating 35 years in the Portland design community, providing mechanical and electrical engineering services for commercial and…” Source: RevenueBase Database · checked Sep 28, 2026
20	Allstructure Engineering, LLC	Partial evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	11-50	8 contacts →
	Partial evidence “Allstructure Engineering, LLC is a full service consulting Structural Engineering firm established in 2005.” Source: RevenueBase Database · checked Sep 28, 2026
21	Base Design Group, INC	Partial evidence	Portland, ME, United StatesHQ checked Sep 28, 2026	11-50	7 contacts →
	Partial evidence “BASE DESIGN GROUP is a full-service structural engineering consulting firm providing design, analysis and evaluation of buildings and special structures throughout the northeast…” Source: RevenueBase Database · checked Sep 28, 2026
22	Arris Consulting	Indirect evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “Arris Consulting was formed in 2019 by Brian Butler and Andrew Craig in Portland, OR and in 2021 brought Shane Fitzpatrick on as plumbing principal.” Source: RevenueBase Database · checked Sep 28, 2026
23	Thornton Tomasetti Becker Structural Engineers, INC	Indirect evidence	Portland, ME, United StatesHQ checked Sep 28, 2026	11-50	4 contacts →
	Indirect evidence “Becker Structural Engineers was founded in 1994.” Source: RevenueBase Database · checked Sep 28, 2026
24	Horn Consulting Engineers	Partial evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Partial evidence “Horn Consulting Engineers LLC is a full-service structural engineering firm founded in 2007.” Source: RevenueBase Database · checked Sep 28, 2026
25	James G. Pierson INC	Partial evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “Formed in 1945 as Pierson & Tidball, the firm originally provided Civil/Structural and Mechanical Engineering.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: infrastructure engineering staffing companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names infrastructure engineering staffing companies.
Partial evidence: Its own public description names part of infrastructure engineering staffing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure engineering staffing companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 46 infrastructure engineering staffing companies based in Portland, United States

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Infrastructure engineering staffing companies based in Portland, United States at a glance

As of Sep 28, 2026

45.2%Verified-email coverage

43.2Average contacts per company

11-50Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Portland, so it is reported there. Company counts and contact totals on this page are exact for Portland, over 46 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among infrastructure engineering staffing companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Portland, United States whose own description of what they do matches “infrastructure engineering staffing companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names infrastructure engineering staffing companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among infrastructure engineering staffing companies, and records with no verified work email. Companies headquartered outside Portland are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 900 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Infrastructure engineering staffing companies by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names infrastructure engineering staffing companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many infrastructure engineering staffing companies are there based in Portland, United States?

RevenueBase identified 46 infrastructure engineering staffing companies headquartered in Portland, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

David Evans And Associates, INC, headquartered in Portland, tops this list with the largest team on record.

Which city in the United States has the most infrastructure engineering staffing companies?

Houston leads the United States with 320 headquartered companies, followed by New York (192) and Austin (129). Portland has 46.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 900 verified decision-maker contacts tracked across these 46 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.