Company lists · Data verified August 2026

Top 25 Coding assessment and interview platforms based in the United States

Name: Coding assessment and interview platforms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 290 companies tracked

There are 290 coding assessment and interview platforms headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 7,391 professional contacts across them, including 1,006 with verified work emails and 881 with mobile numbers. San Francisco is the largest hub.

This list covers coding assessment and interview platforms headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

290Companies

7,391Contacts tracked

1,006Verified emails

881Mobile numbers

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The 25 largest coding assessment and interview platforms based in the United States

Ranked by team size

Top 25 of 290 coding assessment and interview platforms based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Crossover	Austin, TX	5,001-10,000	2,275	9
2	Hackerrank	Santa Clara, CA	n/a	1,605	192
3	KARAT	Seattle, WA	201-500	264	101
4	Formation	San Francisco, CA	n/a	204	15
5	Codesignal	San Francisco, CA	51-200	143	89
6	Flocareer	Burlington, MA	51-200	138	60
7	Glider AI	Redwood City, CA	51-200	129	47
8	Incruiter	Plano, TX	51-200	127	12
9	Eskill	San Antonio, TX	51-200	95	29
10	Textio	Chicago, IL	51-200	89	25
11	Rooftop	Miami, FL	51-200	85	19
12	JOBMA	Minnetonka, MN	51-200	80	29
13	HALLO	Provo, UT	11-50	77	1
14	Spark Hire	Highland Park, IL	51-200	74	42
15	Barraiser	Wilmington, DE	11-50	73	19
16	Sunday	San Francisco	51-200	57	8
17	Creya AI By Interviewdesk	Wilmington, DE	51-200	57	1
18	Brighthire	New York, NY	11-50	53	9
19	Biddle Consulting Group	Folsom, CA	11-50	48	30
20	Assessment Systems Corporation	Stillwater, MN	11-50	37	19
21	XOBIN	DE	11-50	37	16
22	Interviewvector	San Francisco	11-50	34	1
23	Fasthr AI	San Francisco, CA	51-200	29	1
24	Knockri Skills Based Hiring & Promotions	San Francisco, CA	51-200	28	5
25	Flairx	San Francisco	11-50	24	2

Showing 25 of 290 coding assessment and interview platforms based in the United States

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Coding assessment and interview platforms based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

San FranciscoLargest hub · 44 HQs

881Contacts with mobile numbers

3Emails re-verified in last 30 days

Companies by employee count

1-10

185

11-50

51-200

201-500

5,001-10,000

Coding assessment and interview platforms by metro

Metro	Companies
Coding assessment and interview platforms in San Francisco	44
Coding assessment and interview platforms in New York	22
Coding assessment and interview platforms in Seattle	13
Coding assessment and interview platforms in Miami	8
Coding assessment and interview platforms in Dallas	7
Coding assessment and interview platforms in Chicago	6
Coding assessment and interview platforms in Boston	6

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “coding assessment and interview platforms”, with match quality audited by blind human judging, and headquartered in the United States.
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: Contact records re-verify on a rolling cadence; 3 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many coding assessment and interview platforms are there based in the United States?

There are 290 coding assessment and interview platforms headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Crossover, headquartered in Austin, tops this list with the largest team on record.

Which city has the most coding assessment and interview platforms?

San Francisco leads with 44 headquartered companies, followed by New York (22) and Seattle (13).

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 1,006 verified decision-maker contacts tracked across these 290 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.