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List of professional services firms in Oregon

Tamtam tracks 60 professional services firms headquartered in Oregon. This list ranks the 50 largest by number of employees on LinkedIn, led by ieSolutions, INDUSTRY and David Evans and Associates, Inc.. Their median headcount is 219. Half of them were founded in 2003 or later. The most common headquarters are Portland (33), Beaverton (4) and Eugene (2).

馃嚭馃嚫 Oregon50 companiesUpdated Nov 11, 2026

This selection of professional services firms in Oregon includes large companies, primarily based in Portland. These firms offer a range of specialized services, from IT consulting and engineering to legal and architectural design. Notable examples include ieSolutions, which provides IT staffing and consulting, and David Evans and Associates, Inc., a civil engineering firm. Stoel Rives LLP is a prominent law firm, while ZGF Architects focuses on sustainable architectural design.

The data shows a strong concentration of headquarters in Portland, indicating the city's role as a regional hub for professional services. The companies listed also span a wide founding era, from Stoel Rives LLP established in 1907 to more recent firms like INDUSTRY, founded in 2011, highlighting a mix of long-standing institutions and younger ventures.

#CompanyIndustryHeadquarters EmployeesFounded
1
ieSolutionsie4solutions.com

ieSolutions offers staffing services for IT projects and consulting services for planning, project management, system assessment, system delivery, and methodology implementation aligned with business priorities

IT Services and IT Consulting 馃嚭馃嚫 Portland 1,932 2002
2
INDUSTRYindustry.global

A global brand consultancy specializing in defining white space, creating authentic storytelling, and bringing ideas to life with strategic creativity

Design Services 馃嚭馃嚫 Portland 1,457 2011
3
David Evans and Associates, Inc.deainc.com

A leader in progressive design solutions for transportation, land development, energy, and water projects nationwide, with a diverse team of professionals

Civil Engineering 馃嚭馃嚫 Portland 1,084 1976
4
Stoel Rives LLPstoel.com

A leading US corporate and litigation law firm with over 325 attorneys offering services in energy, natural resources, compliance, counseling, deals, and disputes

Law Practice 馃嚭馃嚫 Portland 890 1907
5
ZGF Architectszgf.com

ZGF is a design firm rooted in Oregon, focusing on creating sustainable, community-oriented projects across North America with a humanistic approach

Architecture and Planning 馃嚭馃嚫 Portland 857 1942
6
Logical Positionlogicalposition.com

A top digital marketing agency offering PPC, SEO, website development, graphic design, social media marketing, data feed management, and more to grow businesses globally

Advertising Services 馃嚭馃嚫 Lake Oswego 840 2010
7
Prialtoprialto.com

Prialto offers subscription staffing for remote executive assistants, managing tasks like scheduling, email, travel, and CRM contact to amplify productivity

Staffing and Recruiting 馃嚭馃嚫 Portland 813 2008
8
Certified Languages Internationalcertifiedlanguages.com

A language company offering on-demand interpreting services in over 230 languages, with professional interpreters available 24/7 and skilled in industry-specific terminology

Translation and Localization 馃嚭馃嚫 Portland 795 1996
9
PAEpae-engineers.com

An engineering firm specializing in mechanical, electrical, and technology system design, with a focus on sustainability, regenerative engineering, and community impact

Architecture and Planning 馃嚭馃嚫 Portland 783 1967
10
Confident Staffing Incconfidentstaffing.com

A staffing agency providing services in Oregon and Washington, specializing in various industries and positions including manufacturing, aviation, construction, and more Equal opportunity employer

Staffing and Recruiting 馃嚭馃嚫 Medford 739 2002
11
Hackerhackerarchitects.com

A studio of architects creating spaces that connect us to the landscape, each other, and ourselves with honesty, sustainability, and beauty

Architecture and Planning 馃嚭馃嚫 Portland 689 1983
12
Otakotak.com

A Pacific Northwest-based company focused on urban growth planning, sustainable design, and transportation solutions, prioritizing community, diversity, and innovation

Design Services 馃嚭馃嚫 Portland 500 1981
13
Aldrichaldrichadvisors.com

Providing financial, wealth, tax, and business transition strategies for clients across the West Coast for over 50 years

Professional Services 馃嚭馃嚫 Portland 452 1973
14
Schwabeschwabe.com

Provides industry-focused legal services to clients from start-ups to Fortune 500 companies, offering ideas, advice, and exceptional legal counsel.

Law Practice 馃嚭馃嚫 Portland 431 n/a
15
Instrumentinstrument.com

Digital-first design agency creating brands, products, websites, and campaigns through creative technology partnerships with ambitious global companies for over twenty years.

Marketing Services 馃嚭馃嚫 Portland 423 2005
16
Kittelson & Associates, Inc.kittelson.com

Solve complex transportation problems through planning, operations, design, and research to improve communities and everyday lives nationwide.

Civil Engineering 馃嚭馃嚫 Portland 420 1985
17
AKS Engineering & Forestryaks-eng.com

Consulting engineering firm offering civil engineering and complementary services in Oregon and SW Washington Specializing in public infrastructure and private development projects

Civil Engineering 馃嚭馃嚫 Tualatin 384 1996
18
Miller Nash LLPmillernash.com

A leading law firm with over 150 years of success, providing industry-focused legal services in multiple states, prioritizing client satisfaction and innovative solutions

Law Practice 馃嚭馃嚫 Portland 376 1873
19
Mackenziemackenzie.inc

Leaders in design, committed to diversity, community, equity, sustainability Strong culture of friendship, resiliency, and creative problem-solving Over 60 years of experience

Professional Services 馃嚭馃嚫 Portland 368 1960
20
American Chaseamericanchase.com

A recruitment-centric talent acquisition company providing staffing services, IT solutions, and professional services to Fortune 500 clients across various industries

IT Services and IT Consulting 馃嚭馃嚫 Portland 348 2016
21
Quiktrak, LLCquiktrak.com

A global leader in inspection and verification services for the finance industry, offering floorplan auditing solutions and general inspection services worldwide

Financial Services 馃嚭馃嚫 Beaverton 323 1991
22
Cascade Energycascadeenergy.com

Cascade Energy specializes in industrial energy efficiency solutions, offering program design, carbon tracking, engineering services, software, and training to help clients achieve sustainability goals

Professional Services 馃嚭馃嚫 Portland 313 1993
23
Oil and Gas Staffing, LLCogstaffing.net

Petroleum Geologist and Engineer-owned recruiting agency specializing in oil and gas staffing for companies in the US and Canada Staffing professionals and entry-level laborers

Staffing and Recruiting 馃嚭馃嚫 Bend 307 2013
24
Centizen, Inc.centizen.com

A leading IT staffing and custom software development company offering innovative solutions, remote global hiring, and SaaS product development services

IT Services and IT Consulting 馃嚭馃嚫 Beaverton 251 2003
25
Ankrom Moisanankrommoisan.com

Ankrom Moisan collaborates in architecture, interior design, urban planning, and brand identity to create impactful spaces across the West Coast

Design Services 馃嚭馃嚫 Portland 219 1983

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26
Madden Industrial Craftsmen, Inc.mici.com

A leading industrial staffing company in the Northwest, prioritizing lifelong customer relationships and rewarding employee skills and contributions

Staffing and Recruiting 馃嚭馃嚫 Beaverton 190 1988
27
Evergreen Engineering庐 Inc.evergreenengineering.com

A company founded in 1985 offering industrial engineering, design, consulting, and construction solutions for various markets globally

Industrial Machinery Manufacturing 馃嚭馃嚫 Eugene 73 1985
28
Accordance Search Groupaccordancesearchgroup.com

Connecting sales talent with companies. Specializing in recruiting and placing sales professionals, ensuring successful matches for hiring managers' needs.

Staffing and Recruiting 馃嚭馃嚫 Portland 58 2012
29
Alta Planning + Designaltago.com

Consulting firm specializing in bicycle, pedestrian, trail, park, greenway, and roadway planning, design, engineering, and outreach programs.

Professional Services 馃嚭馃嚫 Portland 51 1996
30
DPW Certified Public Accountantsdpwcpas.com

A financial services firm providing tax preparation, planning, accounting, financial statements, 401K administration, consulting, CAAS, and NIL consulting for businesses and individuals

Accounting 馃嚭馃嚫 Salem 50 1981
31
LEVER Architectureleverarchitecture.com

Design-focused architecture firm in Portland and Los Angeles, emphasizing sustainability, innovation, and equity in creating buildings and environments that enhance the human experience

Architecture and Planning 馃嚭馃嚫 Portland 27 2009
32
Stillwater Energystillwaterenergy.com

A company founded to drive energy savings and a positive impact, focusing on sustainability, collaboration, and fearless innovation in all endeavors

Professional Training and Coaching 馃嚭馃嚫 Portland 26 2016
33
MADOlookwithmado.com

A women-owned company in Portland delivering innovative research insights, strategic advisory, and foresight methods to inspire transformational innovation for clients

Research Services 馃嚭馃嚫 Portland 25 2018
34
The Good | Digital Experience Optimizationthegood.com

Utilizing user insights, this company helps clients optimize digital platforms through data-driven testing, resulting in significant improvements

IT Services and IT Consulting 馃嚭馃嚫 Portland 24 2009
35
OmniDatafreschesolutions.com

Specializing in solution architecture, data engineering, and business intelligence, we partner with global companies to create quick solutions for complex data problems

IT Services and IT Consulting 馃嚭馃嚫 Portland 23 2019
36
Golsan Scruggsgolsanscruggs.com

A specialized risk management consultant and corporate insurance brokerage firm offering Enterprise Risk Management services to commercial clients nationwide

Insurance 馃嚭馃嚫 Portland 23 2001
37
Sapient Lawsapientlaw.com

A unique full-service law firm providing tailored legal solutions for businesses, with experienced attorneys who prioritize client needs and communication

Law Practice 馃嚭馃嚫 Portland 18 2009
38
Mjh Investmentsmjhgroup.com

A private investment and management consulting firm offering services in direct investment and consulting, specializing in private investments

Financial Services 馃嚭馃嚫 Salem 13 n/a
39
Solarc Energy Groupsolarcenergygroup.com

A small firm offering energy efficiency analysis, commissioning, and mechanical engineering services with extensive experience in building energy conservation projects

Industrial Machinery Manufacturing 馃嚭馃嚫 Eugene 12 2015
40
S&C Consulting

Global consulting firm providing AI-powered consultation for DevOps and IT teams, founded in 2016 by two partners

IT Services and IT Consulting 馃嚭馃嚫 Remote 11 2016
41
Future State Consultinglaunchconsulting.com

Tech consulting firm delivering top engineering talent and team solutions with a personalized, relationship-first approach for digital mobility and technology goals

IT Services and IT Consulting 馃嚭馃嚫 Tigard 11 n/a
42
Range Financial Grouprangefinancialgroup.com

A full-service financial firm specializing in financial planning, investment management, tax strategies, and tax return preparation for executives, business owners, and families

Financial Services 馃嚭馃嚫 Tigard 10 2017
43
Bridge City Legalbridgecitylegal.com

A premier west coast litigation consulting and document management company offering strategic, high-quality, and cost-effective solutions to corporations and law firms Services include data forensics, electronic discovery, trial presentation, and more

Legal Services 馃嚭馃嚫 Portland 9 1999
44
Compass IP Law PCcompassiplaw.com

An intellectual property firm specializing in patent law, providing tailored quality work to help clients protect inventions domestically and internationally

Law Practice 馃嚭馃嚫 Portland 9 2014
45
Pepper Foster Consultingpepperfoster.com

A strategy and execution consulting firm helping clients in various industries figure things out and achieve impactful results through innovative solutions and great people

Business Consulting and Services 馃嚭馃嚫 Portland 9 2015
46
Rogue Consultingrogueventuresinc.com

Business services firm specializing in transforming passions into plans, providing customized solutions and full implementation support to empower organizations for impact and change

Business Consulting and Services 馃嚭馃嚫 Lake Oswego 8 2017
47
TACCtacc-or.com

A Central Oregon-based company offering creative technical solutions for businesses in the analytical instrument industry, focused on computing and marketing needs

Computer Networking Products 馃嚭馃嚫 Redmond 7 2017
48
M28 Global, Inc.m28global.com

Specializing in addressing operational challenges through technology, data analytics, and process optimization with experts in business, technology, digital strategy, and design

Software Development 馃嚭馃嚫 Portland 7 2013
49
Endeavor45, LLCendeavor45.com

A consulting group in Portland, OR specializing in Medical Device commercialization, product development, business growth, marketing, branding, and creative services

Business Consulting and Services 馃嚭馃嚫 Beaverton 6 2017
50
Anchor Blue Consulting, LLCanchorbluellc.com

Small energy consulting firm with expertise in energy efficiency, renewable energy, demand response, and evaluation services for utilities, government agencies, and non-profit clients

Business Consulting and Services 馃嚭馃嚫 Portland 5 2016

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.

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