---
title: "Which companies in United States use GIAC certifications?"
description: "EY, MANTECH, Charles River Associates, Chickasaw Nation Industries and more. 1,567 companies hiring in United States whose own job postings show they use GIAC c"
canonical: https://jobspipe.dev/technologies/gpen/us
---

# Which companies in United States use GIAC certifications?

> EY, MANTECH, Charles River Associates, Chickasaw Nation Industries and more. 1,567 companies hiring in United States whose own job postings show they use GIAC certifications: 34 confirmed, 1,533 likely. Updated daily from live postings.

**Canonical URL:** https://jobspipe.dev/technologies/gpen/us

1,567 companies with postings in United States use GIAC certifications according to their own job postings: 34 confirmed and 1,533 likely. The 16 listed below are confirmed users with at least 2 postings and a verified website; the rest are counted here but not named.

- **Confirmed companies:** 34
- **Likely companies:** 1,533
- **Category:** Certification
- **As of:** 25 Sep 2026

## Companies using GIAC certifications

| # | Company | Postings naming it | Last seen |
|---|---|---|---|
| 1 | [EY](https://jobspipe.dev/hiring/ey.com) | 128 | 25 Sep 2026 |
| 2 | [MANTECH](https://jobspipe.dev/hiring/mantech.com) | 69 | 25 Sep 2026 |
| 3 | [Charles River Associates](https://jobspipe.dev/hiring/crai.com) | 19 | 19 Sep 2026 |
| 4 | [Chickasaw Nation Industries](https://jobspipe.dev/hiring/chickasaw.com) | 14 | 24 Sep 2026 |
| 5 | [Link Solutions, Inc](https://jobspipe.dev/hiring/linksol-inc.com) | 13 | 26 Sep 2026 |
| 6 | [ARSIEM](https://jobspipe.dev/hiring/arsiem.com) | 12 | 5 Sep 2026 |
| 7 | [Ennoble First Inc.](https://jobspipe.dev/hiring/ennoblefirst.com) | 9 | 25 Sep 2026 |
| 8 | [Nakupuna Companies](https://jobspipe.dev/hiring/nakupuna.com) | 7 | 25 Sep 2026 |
| 9 | [Veeam Software](https://jobspipe.dev/hiring/veeam.com) | 7 | 25 Sep 2026 |
| 10 | [Nationwide](https://jobspipe.dev/hiring/nationwide-group.com.au) | 6 | 25 Sep 2026 |
| 11 | [OneZero Solutions](https://jobspipe.dev/hiring/onezerollc.com) | 6 | 24 Sep 2026 |
| 12 | [TransUnion](https://jobspipe.dev/hiring/transunion.com) | 4 | 25 Sep 2026 |
| 13 | [Altruist](https://jobspipe.dev/hiring/altruist.com) | 3 | 9 Sep 2026 |
| 14 | [Cox Automotive Inc.](https://jobspipe.dev/hiring/coxautoinc.com) | 3 | 17 Apr 2025 |
| 15 | [Red Ventures](https://jobspipe.dev/hiring/redventures.com) | 3 | 25 Sep 2026 |
| 16 | [Mandolin](https://jobspipe.dev/hiring/mandolin.com) | 2 | 18 Sep 2026 |

## By country

- [India](https://jobspipe.dev/technologies/gpen/in)
- [Canada](https://jobspipe.dev/technologies/gpen/ca)
- [Singapore](https://jobspipe.dev/technologies/gpen/sg)
- [United Kingdom](https://jobspipe.dev/technologies/gpen/gb)
- [Australia](https://jobspipe.dev/technologies/gpen/au)
- [Spain](https://jobspipe.dev/technologies/gpen/es)
- [Malaysia](https://jobspipe.dev/technologies/gpen/my)
- [France](https://jobspipe.dev/technologies/gpen/fr)
- [Brazil](https://jobspipe.dev/technologies/gpen/br)

Worldwide: [Which companies use GIAC certifications?](https://jobspipe.dev/technologies/gpen)

## FAQ

### How many companies use GIAC certifications in United States?

1,567 companies in United States have job postings that show they use GIAC certifications, as of 25 Sep 2026. 34 are confirmed and 1,533 are likely.

### Which companies use GIAC certifications in United States?

EY, MANTECH, Charles River Associates, Chickasaw Nation Industries, Link Solutions, Inc are among the confirmed GIAC certifications users with the most postings naming it in United States. The full list on this page names 16 companies.

### How does JobsPipe know a company uses GIAC certifications?

From the company's own job postings. Each posting is read for the technologies it names, and every company and technology pair is graded: confirmed when two independent checks agree on GIAC certifications in at least one posting, likely when it is a stated requirement or appears in two separate postings. A single passing mention is not counted here. It is evidence of a team working with GIAC certifications, not a purchase record.

## Reproduce

```bash
curl -X POST https://api.jobspipe.dev/v1/companies/search -H "Authorization: Bearer $JOBSPIPE_API_KEY" -H "Content-Type: application/json" -d '{"company_technology_slug_or":["gpen"],"tier_min":"confirmed","company_country_code_or":["US"],"limit":25}'
```


---
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