> 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/company/leidos/ # Leidos A defense and space organization with 25,000 to 50,000 employees. Where it sits among its peers, the technology it runs and how to reach its people. By Enrich.chat Editorial. Updated October 21, 2026. **Short answer:** Leidos (leidos.com) is a defense and space organization with 25,000 to 50,000 employees. Its public technology footprint includes Microsoft 365, Salesforce, AWS and Amazon SES. ## How big is Leidos? Leidos has 25,000 to 50,000 employees. Among the defense and space contractors on this site it sits among the largest. Each dot in the figure is one of its peers, placed by size; the orange dot is Leidos. **Figure: Where Leidos sits among defense and space contractors.** A strip of dots, one for each of 60 peers in defense and space, spread from 2,000 to 2,000,000 employees on a log scale. Leidos is highlighted and falls in the 25,000 to 50,000 employees range among the largest. *Peers in defense and space placed by employee count on a log scale. Sizes are rounded ranges from public profiles.* Headcount on public company profiles is rounded and moves as a company hires, so use the range as a guide, not as a payroll figure. ## Where is Leidos headquartered? Leidos is headquartered in Reston, Virginia. [More defense and space contractors in Virginia](https://enrich.chat/companies-in/virginia/defense-and-space/)[Companies in Virginia](https://enrich.chat/companies-in/virginia/) ## What industry is Leidos in? Leidos works in [defense and space](https://enrich.chat/industries/defense-and-space/). This group covers contractors that build weapons systems, military technology, satellites and space vehicles. Similar organizations on this site: [L3Harris Technologies](https://enrich.chat/company/l3harris-technologies/), [Amentum](https://enrich.chat/company/amentum/), [Raytheon Intelligence & Space](https://enrich.chat/company/raytheon-intelligence-and-space/), [Leonardo](https://enrich.chat/company/leonardo/), [Rheinmetall](https://enrich.chat/company/rheinmetall/) and [Raytheon Missiles & Defense](https://enrich.chat/company/raytheon-missiles-and-defense/). ## What technology does Leidos use? We detect 24 tools on Leidos's public footprint across 10 categories, for example Salesforce for marketing automation and crm, AWS for cloud and hosting and New Relic for data and observability. The figure counts the tools in each category; the groups below name them and link to the companies that use each one. **Figure: Tools detected at Leidos, by category.** A bar chart of how many tools were detected at Leidos in each category: Marketing automation and CRM 5, Email and productivity 5, CDN and security 3, Developer and DevOps tools 2, Cloud and hosting 1, Data and observability 1, Website platforms and CMS 1. *Tools detected on the public footprint of Leidos, by category.* ### Marketing automation and CRM [Salesforce](https://enrich.chat/companies-using/salesforce/)[HubSpot](https://enrich.chat/companies-using/hubspot/)[Adobe Marketing Cloud](https://enrich.chat/companies-using/adobe-marketing-cloud/)[Marketo](https://enrich.chat/companies-using/marketo/)[Demandbase](https://enrich.chat/companies-using/demandbase/) ### Cloud and hosting [AWS](https://enrich.chat/companies-using/aws/) ### Data and observability [New Relic](https://enrich.chat/companies-using/new-relic/) ### Developer and DevOps tools [Python](https://enrich.chat/companies-using/python/)[Jira](https://enrich.chat/companies-using/jira/) ### Email and productivity [Microsoft 365](https://enrich.chat/companies-using/microsoft-365/)[Amazon SES](https://enrich.chat/companies-using/amazon-ses/)[SendGrid](https://enrich.chat/companies-using/sendgrid/)[Atlassian Confluence](https://enrich.chat/companies-using/atlassian-confluence/)[Elastic Email](https://enrich.chat/companies-using/elasticemail/) ### CDN and security [Cloudflare](https://enrich.chat/companies-using/cloudflare/)[Varnish Cache](https://enrich.chat/companies-using/varnish/)[Cloudflare CDN](https://enrich.chat/companies-using/cloudflare-cdn/) ### Website platforms and CMS [Drupal](https://enrich.chat/companies-using/drupal/) ### Analytics and tracking [Google Tag Manager](https://enrich.chat/companies-using/google-tag-manager/) ### Advertising and retargeting [Centro](https://enrich.chat/companies-using/centro/) Tools change as companies adopt and drop them. Check a single company at any time with the free [tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/). ## How do I find the right people at Leidos? Start from the website, leidos.com. Enter it in the free email finder with a name, or ask your AI agent for the people in the roles you sell to, such as program managers, engineering directors and CISOs. ```text Use www.enrich.chat to find the program managers, engineering directors and CISOs at leidos.com, with titles and verified work emails ``` Staff addresses follow a known pattern: see the [Leidos email format](https://enrich.chat/email-format/leidos/). ## Which other companies use the same tools? See who else runs the tools Leidos uses: [Microsoft 365](https://enrich.chat/companies-using/microsoft-365/)[Salesforce](https://enrich.chat/companies-using/salesforce/)[AWS](https://enrich.chat/companies-using/aws/)[Amazon SES](https://enrich.chat/companies-using/amazon-ses/)[Cloudflare](https://enrich.chat/companies-using/cloudflare/)[New Relic](https://enrich.chat/companies-using/new-relic/) ## Frequently asked questions ### How many employees does Leidos have? Leidos is in the 25,000 to 50,000 employees range on its public company profile. Headcounts are rounded and change as companies hire, so treat the range as a guide. ### What industry is Leidos in? Leidos works in defense and space. This group covers contractors that build weapons systems, military technology, satellites and space vehicles. ### What technology does Leidos use? Tools detected on its public footprint include Microsoft 365, Salesforce, AWS and Amazon SES, across 10 categories. A detected tool shows it was seen, not what Leidos pays for it. ### Where is Leidos headquartered? Leidos is headquartered in Reston, Virginia. ### What is the website of Leidos? Leidos's website is leidos.com. Staff email usually uses a domain like it, so check the pattern with the free email format finder before you write to anyone. ## Try this prompt Find people at Leidos ```text Use www.enrich.chat to find the program managers, engineering directors and CISOs at leidos.com, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [L3Harris Technologies](https://enrich.chat/company/l3harris-technologies/) - [Amentum](https://enrich.chat/company/amentum/) - [Raytheon Intelligence & Space](https://enrich.chat/company/raytheon-intelligence-and-space/) - [Leonardo](https://enrich.chat/company/leonardo/) - [Rheinmetall](https://enrich.chat/company/rheinmetall/) - [Raytheon Missiles & Defense](https://enrich.chat/company/raytheon-missiles-and-defense/) - [Babcock International Group](https://enrich.chat/company/babcock-international-group/) - [BAE Systems](https://enrich.chat/company/bae-systems/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)