Leidos tech stack
Leidos builds mostly with Python, C++, JavaScript, Java. Its stack also includes Linux, AWS, PostgreSQL, Angular. Python is named in 914 of the 2,811 job postings Leidos published in the last 12 months (33%). Counted by Alion from the job postings of Leidos, updated Nov 11, 2026.
What programming languages does Leidos use?
Python is named in 33% of job postings at Leidos, followed by C++ (12%), JavaScript (11%), Java (10%).
Python
914 33%
C++
341 12%
JavaScript
299 11%
Java
289 10%
PowerShell
286 10%
SQL
263 9%
MATLAB
182 6%
Bash
166 6%
Show all (41)
And 1 more, each named in fewer postings.
What frameworks and libraries does Leidos use?
Angular is named in 3% of job postings at Leidos, followed by React.js (3%), Selenium (2%), Vue.js (1%).
Angular
96 3%
React.js
86 3%
Selenium
68 2%
Vue.js
34 1%
Spring Boot
30 1%
Hibernate
26 1%
Bootstrap
25 1%
JUnit
22 1%
Show all (119)
And 79 more, each named in fewer postings.
What databases does Leidos use?
PostgreSQL is named in 4% of job postings at Leidos, followed by ElasticSearch (3%), Oracle (3%), MySQL (2%).
PostgreSQL
111 4%
ElasticSearch
85 3%
Oracle
75 3%
MySQL
66 2%
MS SQL
32 1%
Redis
23 1%
MariaDB
17 1%
DynamoDB
15 1%
Show all (31)
What cloud and platforms does Leidos use?
Linux is named in 25% of job postings at Leidos, followed by AWS (21%), Windows (17%), Azure (15%).
AWS
591 21%
Azure
409 15%
Kubernetes
323 11%
Power BI
200 7%
VMWare
194 7%
GitLab
194 7%
Show all (137)
And 97 more, each named in fewer postings.
What developer tools does Leidos use?
Ansible is named in 12% of job postings at Leidos, followed by Git (11%), Docker (10%), Terraform (8%).
Ansible
340 12%
Git
315 11%
Docker
283 10%
Terraform
215 8%
Jenkins
200 7%
AutoCAD
193 7%
Rest API
145 5%
Show all (233)
And 193 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 (1%), 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 (12%), DNS (7%), Configuration Management (6%).
CI/CD
589 21%
Configuration Management
174 6%
Show all (119)
And 79 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.
Industrial Engineering
401 postingsDevOps
358 postingsBackend
305 postingsSecurity
227 postingsNetworking
195 postingsOperations
145 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 2,549 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| Python | 858 | $167k | +6% |
| Linux | 641 | $157k | 0% |
| AWS | 552 | $195k | +24% |
| Windows | 414 | $157k | 0% |
| Azure | 369 | $195k | +24% |
| C++ | 319 | $157k | 0% |
| Kubernetes | 294 | $195k | +24% |
| JavaScript | 284 | $167k | +6% |
| Java | 273 | $195k | +24% |
| SQL | 253 | $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 74 out of 100 (Modern). 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 3,627 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Leidos apart
Companies with a stack like Leidos
CACI International
486 shared technologies
Booz Allen Hamilton
493 shared technologies
Peraton
443 shared technologies
Thales Group
471 shared technologies
Lockheed Martin
431 shared technologies
SAIC
386 shared technologies
Capgemini
543 shared technologies
General Dynamics Information Technology
431 shared technologies
Questions about the Leidos tech stack
What programming languages does Leidos use?
The languages named in Leidos job postings are Python (33%), C++ (12%), JavaScript (11%), Java (10%), PowerShell (10%), as a share of the 2,811 postings of the last 12 months.
Does Leidos use Angular?
Yes. Angular is named in 96 of 2,811 job postings (3%) and required in 60 of them.
What cloud and platforms does Leidos use?
The cloud and platforms named in Leidos job postings are Linux (694), AWS (591), Windows (467) (postings in brackets).
What skills do you need for a Industrial Engineering job at Leidos?
Industrial Engineering postings at Leidos most often require AutoCAD (89), SolidWorks (52), Windows (50), Linux (33), out of 401 postings in the last 12 months.
Is the Leidos tech stack changing?
Yes. Amazon EventBridge, JFrog Xray, Puppeteer, Interpretability first appeared in Leidos job postings in the last six months.
How modern is the Leidos tech stack?
Leidos scores 74 out of 100 (Modern). 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 2,811 postings of the last 12 months and were updated on Nov 11, 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: 691 technologies from 2,811 job postings", as of Nov 11, 2026. https://alion.io/company/leidos/technologies