Leidos tech stack
Leidos builds mostly with Python, C++, Java, JavaScript. Its stack also includes Linux, AWS, PostgreSQL, ElasticSearch. Python is named in 577 of the 1,631 job postings Leidos published in the last 12 months (35%). Counted by Alion from the job postings of Leidos, updated Sep 27, 2026.
What programming languages does Leidos use?
Python is named in 35% of job postings at Leidos, followed by C++ (13%), Java (12%), JavaScript (11%).
Python
577 35%
C++
214 13%
Java
195 12%
JavaScript
186 11%
PowerShell
170 10%
SQL
167 10%
Bash
109 7%
MATLAB
101 6%
Show all (38)
What frameworks and libraries does Leidos use?
Angular is named in 4% of job postings at Leidos, followed by React.js (4%), Selenium (3%), Commander.js (2%).
Angular
64 4%
React.js
59 4%
Selenium
41 3%
Commander.js
25 2%
Spring Boot
23 1%
Vue.js
23 1%
Bootstrap
19 1%
Hibernate
19 1%
Show all (106)
And 66 more, each named in fewer postings.
What databases does Leidos use?
PostgreSQL is named in 5% of job postings at Leidos, followed by ElasticSearch (4%), Oracle (3%), MySQL (3%).
PostgreSQL
76 5%
ElasticSearch
65 4%
Oracle
51 3%
MySQL
44 3%
MS SQL
20 1%
Redis
12 1%
DynamoDB
11 1%
MariaDB
10 1%
Show all (27)
What cloud and platforms does Leidos use?
Linux is named in 27% of job postings at Leidos, followed by AWS (22%), Windows (17%), Azure (15%).
AWS
362 22%
Azure
245 15%
Kubernetes
208 13%
VMWare
128 8%
GitLab
120 7%
Power BI
113 7%
Show all (125)
And 85 more, each named in fewer postings.
What developer tools does Leidos use?
Ansible is named in 13% of job postings at Leidos, followed by Git (12%), Docker (11%), Terraform (8%).
Ansible
213 13%
Git
188 12%
Docker
180 11%
Terraform
133 8%
Jenkins
132 8%
AutoCAD
114 7%
Rest API
58 4%
CloudFormation
55 3%
Show all (179)
And 139 more, each named in fewer postings.
What AI and ML technologies does Leidos use?
LLM is named in 2% of job postings at Leidos, followed by Claude (2%), Gemini (<1%), ChatGPT (<1%).
LCM 
Show all (11)
Which engineering practices does Leidos ask for?
CI/CD is named in 21% of job postings at Leidos, followed by Machine Learning (13%), DNS (7%), TCP/IP (6%).
CI/CD
349 21%
Configuration Management
101 6%
Show all (84)
And 44 more, each named in fewer postings.
What does each Leidos team work with?
The technologies each team's postings require most often, with the number of postings that require them.
DevOps
233 postingsIndustrial Engineering
195 postingsBackend
190 postingsNetworking
147 postingsSecurity
144 postingsHardware
87 postingsHow does your stack fit Leidos?
How much does Leidos pay by technology?
Median stated pay of the postings that name each technology, against the median of all Leidos postings with stated pay: $157k across 1,463 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| Python | 535 | $167k | +6% |
| Linux | 402 | $167k | +6% |
| AWS | 337 | $195k | +24% |
| Windows | 252 | $157k | 0% |
| Azure | 219 | $195k | +24% |
| C++ | 199 | $157k | 0% |
| Kubernetes | 186 | $195k | +24% |
| Java | 182 | $195k | +24% |
| JavaScript | 180 | $167k | +6% |
| SQL | 160 | $167k | +6% |
How is the Leidos stack changing?
Read from the dates of the postings themselves: a technology is new when the first posting that names it appeared in the last six months, rising or falling when its share of postings moved between the last two quarters.
How modern is the Leidos stack?
Leidos scores 75 out of 100 (Cutting-edge). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 11; legacy ones: 2.
How common is the Leidos stack in its industry?
Share of the 651 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Leidos apart
Companies with a stack like Leidos
Booz Allen Hamilton
416 shared technologies
CACI International
408 shared technologies
Peraton
369 shared technologies
Accenture
432 shared technologies
Accenture Federal Services
326 shared technologies
Sopra Steria
364 shared technologies
Bosch
388 shared technologies
Thales Group
330 shared technologies
Questions about the Leidos tech stack
What programming languages does Leidos use?
The languages named in Leidos job postings are Python (35%), C++ (13%), Java (12%), JavaScript (11%), PowerShell (10%), as a share of the 1,631 postings of the last 12 months.
Does Leidos use Angular?
Yes. Angular is named in 64 of 1,631 job postings (4%) and required in 40 of them.
What cloud and platforms does Leidos use?
The cloud and platforms named in Leidos job postings are Linux (443), AWS (362), Windows (284) (postings in brackets).
What skills do you need for a DevOps job at Leidos?
DevOps postings at Leidos most often require Linux (124), Windows (83), AWS (79), Ansible (77), out of 233 postings in the last 12 months.
Is the Leidos tech stack changing?
Yes. NATS, HashiCorp Vault, Kyverno, Sigstore first appeared in Leidos job postings in the last six months.
How modern is the Leidos tech stack?
Leidos scores 75 out of 100 (Cutting-edge). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 11; legacy ones: 2.
How does Alion know the Leidos tech stack?
Alion reads every job posting Leidos publishes and tags the technologies each one names. The figures on this page count the 1,631 postings of the last 12 months and were updated on Sep 27, 2026.
Method and citation
Alion reads every job posting the company publishes and tags the technologies each one names. Shares count the postings of the last 12 months, open and closed; the company's own products are counted apart. How we count
Alion, "Leidos tech stack: 570 technologies from 1,631 job postings", as of Sep 27, 2026. https://alion.io/company/leidos/technologies