This selection of large consulting firms in Portland shows a concentration of companies in IT services, engineering, and design. ieSolutions, with 1932 employees, offers IT staffing and consulting. Woodard & Curran specializes in water and environmental projects, while David Evans and Associates provides design solutions for transportation and land development. INDUSTRY is a global brand consultancy.
A notable pattern among these firms is their long-standing presence, with many founded between the 1960s and 1980s. Examples include PAE, founded in 1967, and BerryDunn, established in 1974. This indicates a mature professional services sector in the region, with established players alongside newer entrants like Lumovy Technology Solutions, founded in 2021.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 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 |
1,932 | |||
| 2 |
INDUSTRYindustry.global
A global brand consultancy specializing in defining white space, creating authentic storytelling, and bringing ideas to life with strategic creativity |
1,457 | |||
| 3 |
Woodard & Curranwoodardcurran.com
Integrated firm specializing in water and environmental projects, offering tailored solutions through science, engineering, design-build, operations, and collaborative partnerships with clients |
1,148 | |||
| 4 |
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 |
1,084 | |||
| 5 |
BerryDunn โ Assurance, Tax and Consultingberrydunn.com
A nationally recognized firm providing assurance, tax, and consulting services to help clients create, grow, and protect value with exceptional service |
1,049 | |||
| 6 |
PAEpae-engineers.com
An engineering firm specializing in mechanical, electrical, and technology system design, with a focus on sustainability, regenerative engineering, and community impact |
783 | |||
| 7 | 500 | ||||
| 8 |
Aldrichaldrichadvisors.com
Providing financial, wealth, tax, and business transition strategies for clients across the West Coast for over 50 years |
452 | |||
| 9 |
Tilsontilsontech.com
A multi-specialty telecommunications services firm with over 25 years of experience building and maintaining information infrastructure for various clients nationwide |
422 | |||
| 10 |
Kittelson & Associates, Inc.kittelson.com
Solve complex transportation problems through planning, operations, design, and research to improve communities and everyday lives nationwide. |
420 | |||
| 11 |
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 |
368 | |||
| 12 |
Baker Newman Noyesbnncpa.com
One of the top 100 accounting and consulting firms, specializing in banking, healthcare, manufacturing, not-for-profit, public sector, and family-owned businesses |
321 | |||
| 13 |
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 |
313 | |||
| 14 |
Lumovy Technology Solutionslumovy.com
A company specializing in Dynamics365 technology experiences, digital transformation, cloud integrations, end-to-end implementation, quality engineering, system updates, and support services |
267 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 15 |
Systems Engineeringsystemsengineering.com
A 100% employee-owned IT strategy and managed technology services provider, focused on delivering secure technology solutions for clients in various industries |
210 | |||
| 16 |
Alta Planning + Designaltago.com
Consulting firm specializing in bicycle, pedestrian, trail, park, greenway, and roadway planning, design, engineering, and outreach programs. |
51 | |||
| 17 |
Stillwater Energystillwaterenergy.com
A company founded to drive energy savings and a positive impact, focusing on sustainability, collaboration, and fearless innovation in all endeavors |
26 | |||
| 18 |
MADOlookwithmado.com
A women-owned company in Portland delivering innovative research insights, strategic advisory, and foresight methods to inspire transformational innovation for clients |
25 | |||
| 19 |
The Good | Digital Experience Optimizationthegood.com
Utilizing user insights, this company helps clients optimize digital platforms through data-driven testing, resulting in significant improvements |
24 | |||
| 20 |
OmniDatafreschesolutions.com
Specializing in solution architecture, data engineering, and business intelligence, we partner with global companies to create quick solutions for complex data problems |
23 | |||
| 21 |
Golsan Scruggsgolsanscruggs.com
A specialized risk management consultant and corporate insurance brokerage firm offering Enterprise Risk Management services to commercial clients nationwide |
23 | |||
| 22 |
Synaptiqsynaptiq.ai
An intelligent product company leveraging AI & ML to help SMBs and enterprises generate insights, build innovative products, and solve challenges for a better world |
18 | |||
| 23 |
Foglight Solutionsfoglightsolutions.com
Foglight Solutions helps mid-market businesses achieve exceptional performance through digital transformation, specializing in Salesforce platform solutions and cloud migration services |
9 | |||
| 24 |
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 |
9 | |||
| 25 |
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 |
7 | |||
| 26 |
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 |
5 | |||
| 27 |
Gordian Knot Strategiesgordianknotstrategies.com
A leading consulting firm specializing in strategic problem-solving for harnessing natural climate solutions, carbon markets, climate finance, and impact investing worldwide |
5 | |||
| 28 |
Chemistry & Drug Discovery Consulting, LLCchemdisc.com
Specializing in medicinal chemistry & early drug discovery, offering expertise in lead identification, hit-to-lead chemistry, lead optimization, prodrug design, patent assessments |
3 | |||
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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 12, 2026.
More company lists in Portland
- The largest companies in Portland 523
- Retail chains in Portland 58
- Professional services firms in Portland 48
- Manufacturers in Portland 42
- Financial services firms in Portland 37
- Multinational companies in Portland 37
- Food and Beverage Services companies in Portland 34
- Education providers in Portland 30
- Healthcare providers in Portland 30
- Construction companies in Portland 28
- E-commerce companies in Portland 25
The same list elsewhere in United States
- Consulting firms in the United States 4,382
- Consulting firms in California 551
- Consulting firms in New York State 474
- Consulting firms in Texas 453
- Consulting firms in Virginia 283
- Consulting firms in Illinois 238
- Consulting firms in New Jersey 215
- Consulting firms in Florida 186
- Consulting firms in Georgia 167
- Consulting firms in Massachusetts 153
- Consulting firms in Pennsylvania 144
- Consulting firms in Ohio 115
- Consulting firms in Maryland 112
- Consulting firms in Washington State 106
- Consulting firms in Michigan 103
- Consulting firms in North Carolina 85
- Consulting firms in Alabama 78
- Consulting firms in Colorado 77
- Consulting firms in New York 368
- Consulting firms in Chicago 127
- Consulting firms in Houston 99
- Consulting firms in San Francisco 88
- Consulting firms in Atlanta 84
- Consulting firms in Washington 70