> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/naics/541511/washington/ # NAICS 541511 companies in Washington Companies with NAICS code 541511 (Custom Computer Programming Services) headquartered in Washington, with their cities, sizes and SIC codes. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** The biggest NAICS 541511 companies in Washington by headcount range include People Tech Group, Icertis and Outreach. NAICS 541511 is the code for Custom Computer Programming Services. Among those counted, they are mostly very small: 51% have 50 or fewer employees. ## Which NAICS 541511 companies are in Washington? The biggest by headcount range include People Tech Group, Icertis, Outreach, Acumatica and Smartek21. NAICS 541511 is the code for Custom Computer Programming Services. Names link to a company profile where we have one. | Company | City | Employees | | --- | --- | --- | | People Tech Group | Redmond | 1,001 to 5,000 | | Icertis | Bellevue | 1,001 to 5,000 | | Outreach | Seattle | 501 to 1,000 | | Acumatica | Bellevue | 501 to 1,000 | | Smartek21 | Kirkland | 501 to 1,000 | | Inspirage | Bellevue | 501 to 1,000 | | Unify Technologies | Bellevue | 501 to 1,000 | | Lenora Systems | Redmond | 501 to 1,000 | | Dataweave | Bellevue | 201 to 500 | | Redapt | Woodinville | 201 to 500 | | Click2cloud | Bellevue | 201 to 500 | | Inviso | Bellevue | 201 to 500 | | Amperity | Seattle | 201 to 500 | | Temporal Technologies | Bellevue | 201 to 500 | | Limeade | Bellevue | 201 to 500 | | Karat | Seattle | 201 to 500 | | Advaiya Solutions | Bellevue | 201 to 500 | | Pushpay | Redmond | 201 to 500 | | Seagull Scientific | Bellevue | 201 to 500 | | Aquera | Seattle | 201 to 500 | | Realnetworks | Seattle | 201 to 500 | | Accelbyte | Bellevue | 201 to 500 | | Rec Room | Seattle | 201 to 500 | | Outboundengine | Seattle | 201 to 500 | | Congruent Software | Bellevue | 201 to 500 | The table shows the 25 biggest by headcount range, with ties broken by audience size. The charts and percentages below cover every company counted for this page, not just these 25, and companies with fewer than 11 employees are not counted. Headquarters is the location on each company's public profile. ## Which cities in Washington? Within Washington, Seattle (38%), Bellevue (23%) and Redmond (14%) are the most common headquarters. **Figure: Cities of NAICS 541511 companies in Washington.** Bars for the share of counted NAICS 541511 companies in Washington headquartered in each city: Seattle 38%, Bellevue 23%, Redmond 14%, Kirkland 5%, Bothell 3%, Vancouver 3%, Spokane 2%. *Share of counted NAICS 541511 companies in Washington by headquarters city.* ## How big are they? 51% of the NAICS 541511 companies counted in Washington have 50 or fewer employees, and the middle one is in the 11 to 50 range. Companies with fewer than 11 employees are not counted. **Figure: Size of NAICS 541511 companies in Washington.** Seven columns for the share of counted NAICS 541511 companies in Washington in each employee range: 11 to 50 51%, 51 to 200 34%, 201 to 500 11%, 501 to 1,000 4%, 1,001 to 5,000 1%, 5,001 to 10,000 0%, 10,001+ 0%. *Share of counted NAICS 541511 companies in Washington in each employee range.* ## How old are they? Most were founded in the 2010s (52%), then the 2000s (23%). **Figure: When NAICS 541511 companies in Washington were founded.** Eight columns for the share of counted NAICS 541511 companies in Washington founded in each era: Before 1960 0%, 1960s 1%, 1970s 0%, 1980s 5%, 1990s 15%, 2000s 23%, 2010s 52%, 2020s 4%. *Share of counted NAICS 541511 companies in Washington by the era they were founded in, for the ones that list a founding year.* ## How do you reach the people at these Washington companies? The people to talk to are usually engineering, delivery and revenue leaders. Build the list in three prompts to your AI agent. ### 1. Count them (free) Counting who matches never uses credits. ```text Use www.enrich.chat to count the companies with NAICS code 541511 in Washington ``` ### 2. Find the people (5 credits per person) Name the roles you sell to. Each person returned is 5 credits, and name, title and company are included. ```text Use www.enrich.chat to find the engineering, delivery and revenue leaders at companies with NAICS code 541511 in Washington, with their titles ``` ### 3. Get their work emails (10 credits each) An email is 10 credits only when one is found. Every email comes with a status: verified, catch-all or unknown. ```text Use www.enrich.chat to find the work emails for these people and tell me which ones are verified ``` ## More to explore About the code: [NAICS 541511: Custom Computer Programming Services](https://enrich.chat/naics/541511/). About the place: [companies in Washington](https://enrich.chat/companies-in/washington/). NAICS 541511 in other states: [California](https://enrich.chat/naics/541511/california/)[Texas](https://enrich.chat/naics/541511/texas/)[New York](https://enrich.chat/naics/541511/new-york/)[Florida](https://enrich.chat/naics/541511/florida/)[Virginia](https://enrich.chat/naics/541511/virginia/)[New Jersey](https://enrich.chat/naics/541511/new-jersey/)[Massachusetts](https://enrich.chat/naics/541511/massachusetts/)[Georgia](https://enrich.chat/naics/541511/georgia/)[Illinois](https://enrich.chat/naics/541511/illinois/)[Pennsylvania](https://enrich.chat/naics/541511/pennsylvania/) Other NAICS codes in Washington: [NAICS 722511: Full-Service Restaurants](https://enrich.chat/naics/722511/washington/)[NAICS 236220: Commercial and Institutional Building](https://enrich.chat/naics/236220/washington/)[NAICS 236115: New Single-Family Housing Construction](https://enrich.chat/naics/236115/washington/)[NAICS 531210: Offices of Real Estate Agents](https://enrich.chat/naics/531210/washington/) ## Frequently asked questions ### Which NAICS 541511 companies are in Washington? The biggest by headcount range include People Tech Group, Icertis, Outreach, Acumatica and Smartek21. The page lists 25 with links to their profiles where we have them. ### What is NAICS 541511? NAICS 541511 is the code for Custom Computer Programming Services, in sector 54: Professional, Scientific, and Technical Services. ### Which cities in Washington have the most? Seattle (38%), Bellevue (23%) and Redmond (14%) lead among the companies counted. ## Try this prompt Find the people at NAICS 541511 companies in Washington ```text Use www.enrich.chat to find the engineering, delivery and revenue leaders at companies with NAICS code 541511 in Washington, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [NAICS 541511 in California](https://enrich.chat/naics/541511/california/) - [NAICS 541511 in Texas](https://enrich.chat/naics/541511/texas/) - [NAICS 541511 in New York](https://enrich.chat/naics/541511/new-york/) - [NAICS 541511 in Florida](https://enrich.chat/naics/541511/florida/) - [NAICS 722511 in Washington](https://enrich.chat/naics/722511/washington/) - [NAICS 236220 in Washington](https://enrich.chat/naics/236220/washington/) - [NAICS 236115 in Washington](https://enrich.chat/naics/236115/washington/) - [NAICS 531210 in Washington](https://enrich.chat/naics/531210/washington/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)