Fiserv tech stack
Fiserv builds mostly with SQL, Java, Python, JavaScript. Its stack also includes AWS, Azure, Spring Boot, PostgreSQL. AWS is named in 135 of the 375 job postings Fiserv published in the last 12 months (36%). Counted by Alion from the job postings of Fiserv, updated Sep 26, 2026.
What programming languages does Fiserv use?
SQL is named in 31% of job postings at Fiserv, followed by Java (29%), Python (25%), JavaScript (14%).
SQL
118 31%
Java
107 29%
Python
93 25%
JavaScript
54 14%
C#
46 12%
TypeScript
30 8%
C++
25 7%
PowerShell
17 5%
Show all (26)
What frameworks and libraries does Fiserv use?
Spring Boot is named in 12% of job postings at Fiserv, followed by React.js (5%), Selenium (4%), Angular (4%).
Spring Boot
46 12%
React.js
20 5%
Selenium
15 4%
Angular
15 4%
Playwright
13 3%
Cypress
11 3%
JUnit
11 3%
Hibernate
9 2%
Show all (62)
And 22 more, each named in fewer postings.
What databases does Fiserv use?
PostgreSQL is named in 7% of job postings at Fiserv, followed by Snowflake (7%), MySQL (6%), Db2 (4%).
PostgreSQL
28 7%
Snowflake
27 7%
MySQL
22 6%
Db2
15 4%
Amazon Aurora
9 2%
MS SQL
7 2%
Oracle
6 2%
Cassandra
5 1%
Show all (16)
What cloud and platforms does Fiserv use?
AWS is named in 36% of job postings at Fiserv, followed by Azure (30%), Kubernetes (30%), GCP (24%).
AWS
135 36%
Azure
114 30%
Kubernetes
114 30%
GCP
90 24%
Apache Kafka
39 10%
Power BI
39 10%
GitHub
32 9%
GitLab
32 9%
Show all (79)
And 39 more, each named in fewer postings.
What developer tools does Fiserv use?
Docker is named in 19% of job postings at Fiserv, followed by Git (13%), Jenkins (11%), Rest API (10%).
Docker
70 19%
Git
47 13%
Jenkins
40 11%
Rest API
39 10%
Terraform
38 10%
Copilot
31 8%
Ansible
15 4%
Show all (77)
And 37 more, each named in fewer postings.
What AI and ML technologies does Fiserv use?
LLM is named in 7% of job postings at Fiserv, followed by Claude (5%), ChatGPT (2%), Gemini (1%).
Which engineering practices does Fiserv ask for?
CI/CD is named in 41% of job postings at Fiserv, followed by AI Agents (9%), Machine Learning (6%), Platform Engineering (6%).
CI/CD
155 41%
AI Agents
33 9%
Platform Engineering
22 6%
Incident Management
17 5%
RAG
16 4%
Show all (64)
And 24 more, each named in fewer postings.
What does each Fiserv team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
78 postingsDevOps
38 postingsQA
32 postingsFinance
23 postingsAI/ML
22 postingsLeadership
21 postingsHow does your stack fit Fiserv?
How much does Fiserv pay by technology?
Median stated pay of the postings that name each technology, against the median of all Fiserv postings with stated pay: $186k across 153 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| AWS | 48 | $207k | +11% |
| SQL | 48 | $176k | −5% |
| Java | 46 | $186k | 0% |
| GCP | 45 | $210k | +13% |
| Python | 41 | $210k | +13% |
| Azure | 38 | $216k | +16% |
| Kubernetes | 38 | $210k | +13% |
| JavaScript | 29 | $198k | +6% |
| Spring Boot | 22 | $210k | +13% |
| C# | 20 | $186k | 0% |
How modern is the Fiserv stack?
Fiserv 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: 6; legacy ones: 0.
How common is the Fiserv stack in its industry?
Share of the 791 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Fiserv apart
Companies with a stack like Fiserv
Questions about the Fiserv tech stack
What programming languages does Fiserv use?
The languages named in Fiserv job postings are SQL (31%), Java (29%), Python (25%), JavaScript (14%), C# (12%), as a share of the 375 postings of the last 12 months.
Does Fiserv use Spring Boot?
Yes. Spring Boot is named in 46 of 375 job postings (12%) and required in 41 of them.
What cloud and platforms does Fiserv use?
The cloud and platforms named in Fiserv job postings are AWS (135), Azure (114), Kubernetes (114) (postings in brackets).
What skills do you need for a Backend job at Fiserv?
Backend postings at Fiserv most often require Java (51), AWS (39), SQL (37), Spring Boot (29), out of 78 postings in the last 12 months.
Is the Fiserv tech stack changing?
No new technology has appeared in Fiserv job postings in the last six months.
How modern is the Fiserv tech stack?
Fiserv 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: 6; legacy ones: 0.
How does Alion know the Fiserv tech stack?
Alion reads every job posting Fiserv publishes and tags the technologies each one names. The figures on this page count the 375 postings of the last 12 months and were updated on Sep 26, 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, "Fiserv tech stack: 331 technologies from 375 job postings", as of Sep 26, 2026. https://alion.io/company/fiserv/technologies