Fiserv tech stack
Fiserv builds mostly with SQL, Java, Python, C#. Its stack also includes AWS, Azure, Spring Boot, Snowflake. AWS is named in 218 of the 609 job postings Fiserv published in the last 12 months (36%). Counted by Alion from the job postings of Fiserv, updated Nov 10, 2026.
What programming languages does Fiserv use?
SQL is named in 32% of job postings at Fiserv, followed by Java (28%), Python (22%), C# (13%).
SQL
196 32%
Java
172 28%
Python
137 22%
C#
80 13%
JavaScript
76 12%
TypeScript
48 8%
C++
46 8%
PowerShell
31 5%
Show all (26)
What frameworks and libraries does Fiserv use?
Spring Boot is named in 11% of job postings at Fiserv, followed by React.js (5%), Angular (3%), Selenium (3%).
Spring Boot
65 11%
React.js
29 5%
Angular
21 3%
Selenium
21 3%
Playwright
16 3%
JUnit
14 2%
Cypress
14 2%
Hibernate
11 2%
Show all (72)
And 32 more, each named in fewer postings.
What databases does Fiserv use?
Snowflake is named in 7% of job postings at Fiserv, followed by PostgreSQL (6%), MySQL (6%), Db2 (3%).
Snowflake
45 7%
PostgreSQL
39 6%
MySQL
35 6%
Db2
17 3%
Oracle
15 2%
MS SQL
12 2%
Redis
11 2%
Amazon Aurora
10 2%
Show all (24)
What cloud and platforms does Fiserv use?
AWS is named in 36% of job postings at Fiserv, followed by Azure (32%), Kubernetes (25%), GCP (24%).
AWS
218 36%
Azure
193 32%
Kubernetes
155 25%
GCP
146 24%
Apache Kafka
63 10%
Power BI
60 10%
Splunk
49 8%
Show all (97)
And 57 more, each named in fewer postings.
What developer tools does Fiserv use?
Docker is named in 15% of job postings at Fiserv, followed by Rest API (14%), Git (9%), Jenkins (8%).
Docker
89 15%
Rest API
87 14%
Git
57 9%
Jenkins
51 8%
Terraform
48 8%
Copilot
45 7%
Ansible
28 5%
Show all (86)
And 46 more, each named in fewer postings.
What AI and ML technologies does Fiserv use?
LLM is named in 5% of job postings at Fiserv, followed by Claude (3%), ChatGPT (2%), Gemini (<1%).
Show all (9)
Which engineering practices does Fiserv ask for?
CI/CD is named in 39% of job postings at Fiserv, followed by AI Agents (7%), Machine Learning (6%), Incident Management (5%).
CI/CD
236 39%
AI Agents
43 7%
Incident Management
33 5%
Platform Engineering
29 5%
RAG
26 4%
Show all (72)
And 32 more, each named in fewer postings.
What other technologies does Fiserv use?
VSAM is named in 1% of job postings at Fiserv, followed by Kotlin Coroutines (<1%).
Kotlin Coroutines
1 <1%
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
141 postingsDevOps
54 postingsQA
48 postingsProduct
44 postingsLeadership
38 postingsFinance
36 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 255 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| AWS | 81 | $204k | +10% |
| SQL | 81 | $182k | −2% |
| Java | 75 | $186k | 0% |
| GCP | 68 | $210k | +13% |
| Azure | 68 | $207k | +11% |
| Python | 66 | $210k | +13% |
| Kubernetes | 48 | $210k | +13% |
| JavaScript | 38 | $204k | +10% |
| Spring Boot | 31 | $210k | +13% |
| C# | 30 | $186k | 0% |
How is the Fiserv 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 Fiserv stack?
Fiserv scores 78 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: 9; legacy ones: 0.
How common is the Fiserv stack in its industry?
Share of the 1,791 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Fiserv apart
Companies with a stack like Fiserv
Synechron
286 shared technologies
Barclays
300 shared technologies
GFT Technologies
285 shared technologies
FIS
281 shared technologies
Zensar Technologies
318 shared technologies
EPAM Systems
304 shared technologies
Wells Fargo
254 shared technologies
London Stock Exchange Group
264 shared technologies
Questions about the Fiserv tech stack
What programming languages does Fiserv use?
The languages named in Fiserv job postings are SQL (32%), Java (28%), Python (22%), C# (13%), JavaScript (12%), as a share of the 609 postings of the last 12 months.
Does Fiserv use Spring Boot?
Yes. Spring Boot is named in 65 of 609 job postings (11%) and required in 58 of them.
What cloud and platforms does Fiserv use?
The cloud and platforms named in Fiserv job postings are AWS (218), Azure (193), Kubernetes (155) (postings in brackets).
What skills do you need for a Backend job at Fiserv?
Backend postings at Fiserv most often require Java (94), AWS (75), SQL (68), Azure (57), out of 141 postings in the last 12 months.
Is the Fiserv tech stack changing?
Yes. Azure Cosmos DB, Fine-tuning, Structured Outputs, XGBoost first appeared in Fiserv job postings in the last six months.
How modern is the Fiserv tech stack?
Fiserv scores 78 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: 9; 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 609 postings of the last 12 months and were updated on Nov 10, 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: 388 technologies from 609 job postings", as of Nov 10, 2026. https://alion.io/company/fiserv/technologies