> 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/maryland/ # NAICS 541511 companies in Maryland Companies with NAICS code 541511 (Custom Computer Programming Services) headquartered in Maryland, with their cities, sizes and SIC codes. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** The biggest NAICS 541511 companies in Maryland by headcount range include Infinite Computer Solutions, Chargebee and Tista Science And Technology. NAICS 541511 is the code for Custom Computer Programming Services. Among those counted, they are mostly very small: 55% have 50 or fewer employees. ## Which NAICS 541511 companies are in Maryland? The biggest by headcount range include Infinite Computer Solutions, Chargebee, Tista Science And Technology, Sonatype and Edgewater Federal Solutions. NAICS 541511 is the code for Custom Computer Programming Services. Names link to a company profile where we have one. | Company | City | Employees | | --- | --- | --- | | [Infinite Computer Solutions](https://enrich.chat/company/infinite-computer-solutions/) | Rockville | 10,001+ | | Chargebee | North Bethesda | 1,001 to 5,000 | | Tista Science And Technology | Rockville | 1,001 to 5,000 | | Sonatype | Fulton | 501 to 1,000 | | Edgewater Federal Solutions | Frederick | 501 to 1,000 | | The Mil | Bowie | 501 to 1,000 | | Soft Suave Technologies | Ellicott City | 201 to 500 | | Acetech Group | Columbia | 201 to 500 | | Hilabs | Bethesda | 201 to 500 | | Vectorworks | Columbia | 201 to 500 | | Gama-1 Technologies | Greenbelt | 201 to 500 | | Reli Group | Windsor Mill | 201 to 500 | | Rocket Money | Silver Spring | 201 to 500 | | Newwave Telecom & Technologies | Elkridge | 201 to 500 | | Apkudo | Baltimore | 201 to 500 | | Lcg | Rockville | 201 to 500 | | Index Analytics | Windsor Mill | 201 to 500 | | Fasoo | Bethesda | 201 to 500 | | Adnet Systems | Bethesda | 201 to 500 | | Cybrary | Riverdale | 51 to 200 | | International Software Systems | Greenbelt | 51 to 200 | | Digital Infuzion | Rockville | 51 to 200 | | Mobomo | Damascus | 51 to 200 | | Sparksoft | Columbia | 51 to 200 | | Employee Navigator | Bethesda | 51 to 200 | 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 Maryland? Within Maryland, Columbia (18%), Rockville (13%) and Baltimore (10%) are the most common headquarters. **Figure: Cities of NAICS 541511 companies in Maryland.** Bars for the share of counted NAICS 541511 companies in Maryland headquartered in each city: Columbia 18%, Rockville 13%, Baltimore 10%, Bethesda 8%, Ellicott City 4%, Silver Spring 4%, Frederick 4%, Annapolis 3%. *Share of counted NAICS 541511 companies in Maryland by headquarters city.* ## How big are they? 55% of the NAICS 541511 companies counted in Maryland 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 Maryland.** Seven columns for the share of counted NAICS 541511 companies in Maryland in each employee range: 11 to 50 55%, 51 to 200 32%, 201 to 500 9%, 501 to 1,000 2%, 1,001 to 5,000 1%, 5,001 to 10,000 0%, 10,001+ 1%. *Share of counted NAICS 541511 companies in Maryland in each employee range.* ## How old are they? Most were founded in the 2000s (40%), then the 2010s (38%). **Figure: When NAICS 541511 companies in Maryland were founded.** Eight columns for the share of counted NAICS 541511 companies in Maryland founded in each era: Before 1960 0%, 1960s 0%, 1970s 1%, 1980s 7%, 1990s 14%, 2000s 40%, 2010s 38%, 2020s 1%. *Share of counted NAICS 541511 companies in Maryland by the era they were founded in, for the ones that list a founding year.* ## How Maryland compares with the rest of the country - 38% were founded in 2010 or later, against 51% across NAICS 541511 companies nationwide. ## Which SIC codes do they carry? The older SIC system and NAICS do not line up one to one. These are the SIC codes seen most here. **Figure: SIC codes of NAICS 541511 companies in Maryland.** Bars for the share of counted NAICS 541511 companies in Maryland with each code: 7371 71%, 7379 9%, 7373 4%. *Share of counted NAICS 541511 companies in Maryland by their SIC code.* [SIC 7373](https://enrich.chat/sic/7373/) ## How do you reach the people at these Maryland 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 Maryland ``` ### 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 Maryland, 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 Maryland](https://enrich.chat/companies-in/maryland/). 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/)[Washington](https://enrich.chat/naics/541511/washington/) Other NAICS codes in Maryland: [NAICS 541512: Computer Systems Design Services](https://enrich.chat/naics/541512/maryland/)[NAICS 236220: Commercial and Institutional Building](https://enrich.chat/naics/236220/maryland/)[NAICS 238990: All Other Specialty Trade Contractors](https://enrich.chat/naics/238990/maryland/) ## Frequently asked questions ### Which NAICS 541511 companies are in Maryland? The biggest by headcount range include Infinite Computer Solutions, Chargebee, Tista Science And Technology, Sonatype and Edgewater Federal Solutions. 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 Maryland have the most? Columbia (18%), Rockville (13%) and Baltimore (10%) lead among the companies counted. ## Try this prompt Find the people at NAICS 541511 companies in Maryland ```text Use www.enrich.chat to find the engineering, delivery and revenue leaders at companies with NAICS code 541511 in Maryland, 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 541512 in Maryland](https://enrich.chat/naics/541512/maryland/) - [NAICS 236220 in Maryland](https://enrich.chat/naics/236220/maryland/) - [NAICS 238990 in Maryland](https://enrich.chat/naics/238990/maryland/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)