Capital One tech stack
Capital One builds mostly with Python, SQL, Scala, JavaScript. Its stack also includes AWS, GCP, PyTorch, Snowflake. AWS is named in 1,038 of the 1,432 job postings Capital One published in the last 12 months (72%). Counted by Alion from the job postings of Capital One, updated Sep 27, 2026.
What programming languages does Capital One use?
Python is named in 65% of job postings at Capital One, followed by SQL (39%), Scala (35%), JavaScript (31%).
Python
930 65%
SQL
555 39%
Scala
507 35%
JavaScript
449 31%
TypeScript
382 27%
Java
378 26%
Go
246 17%
C#
225 16%
Show all (29)
What frameworks and libraries does Capital One use?
PyTorch is named in 16% of job postings at Capital One, followed by PyTorch C++ (9%), NeMo Guardrails (5%), Hadoop (5%).
PyTorch
226 16%
PyTorch C++
132 9%
NeMo Guardrails
77 5%
Hadoop
65 5%
Scikit-learn
59 4%
TensorFlow
58 4%
React.js
54 4%
Show all (68)
And 28 more, each named in fewer postings.
What databases does Capital One use?
Snowflake is named in 9% of job postings at Capital One, followed by Cassandra (7%), Amazon Redshift (6%), MySQL (5%).
Snowflake
132 9%
Cassandra
98 7%
Amazon Redshift
90 6%
MySQL
65 5%
MongoDB
59 4%
DynamoDB
54 4%
PostgreSQL
14 1%
ElasticSearch
8 1%
Show all (24)
What cloud and platforms does Capital One use?
AWS is named in 72% of job postings at Capital One, followed by GCP (53%), Azure (53%), Kubernetes (28%).
AWS
1038 72%
GCP
765 53%
Azure
763 53%
Kubernetes
398 28%
Spark
281 20%
GitHub
131 9%
Bitbucket
96 7%
Show all (64)
And 24 more, each named in fewer postings.
What developer tools does Capital One use?
Docker is named in 26% of job postings at Capital One, followed by Git (8%), Claude Code (5%), Copilot (4%).
Docker
378 26%
Git
109 8%
Claude Code
70 5%
Copilot
64 4%
Jenkins
47 3%
Terraform
26 2%
GraphQL
18 1%
Show all (60)
And 20 more, each named in fewer postings.
What AI and ML technologies does Capital One use?
LLM is named in 14% of job postings at Capital One, followed by Claude (5%), Gemini (3%), VLM (1%).
Show all (12)
Which engineering practices does Capital One ask for?
Machine Learning is named in 40% of job postings at Capital One, followed by CI/CD (15%), AI Agents (15%), LLM Guardrails (10%).
CI/CD
219 15%
AI Agents
209 15%
Time Series Forecasting
74 5%
Explainable AI
53 4%
NLP
52 4%
Show all (77)
And 37 more, each named in fewer postings.
What other technologies does Capital One use?
Kotlin Coroutines is named in <1% of job postings at Capital One, followed by VSAM (<1%).
Kotlin Coroutines
3 <1%
What does each Capital One team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
416 postingsAI/ML
211 postingsData Science
164 postingsProduct
104 postingsLeadership
72 postingsFinance
67 postingsHow does your stack fit Capital One?
How is the Capital One 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 Capital One stack?
Capital One scores 79 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: 12; legacy ones: 1.
How common is the Capital One stack in its industry?
Share of the 342 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Capital One apart
Companies with a stack like Capital One
Questions about the Capital One tech stack
What programming languages does Capital One use?
The languages named in Capital One job postings are Python (65%), SQL (39%), Scala (35%), JavaScript (31%), TypeScript (27%), as a share of the 1,432 postings of the last 12 months.
Does Capital One use PyTorch?
Yes. PyTorch is named in 226 of 1,432 job postings (16%) and required in 192 of them.
What cloud and platforms does Capital One use?
The cloud and platforms named in Capital One job postings are AWS (1038), GCP (765), Azure (763) (postings in brackets).
What skills do you need for a Backend job at Capital One?
Backend postings at Capital One most often require AWS (390), Azure (368), GCP (368), Python (334), out of 416 postings in the last 12 months.
Is the Capital One tech stack changing?
Yes. Context Engineering, DHCP, Crossplane, Pulumi first appeared in Capital One job postings in the last six months.
How modern is the Capital One tech stack?
Capital One scores 79 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: 12; legacy ones: 1.
How does Alion know the Capital One tech stack?
Alion reads every job posting Capital One publishes and tags the technologies each one names. The figures on this page count the 1,432 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, "Capital One tech stack: 336 technologies from 1,432 job postings", as of Sep 27, 2026. https://alion.io/company/capitalone/technologies