OCLC tech stack
OCLC builds mostly with Java, JavaScript, Python, SQL. Its stack also includes AWS, PostgreSQL, Linux, MySQL. Java is named in 7 of the 25 job postings OCLC published in the last 12 months (28%). Counted by Alion from the job postings of OCLC, updated Oct 28, 2026.
What programming languages does OCLC use?
Java is named in 28% of job postings at OCLC, followed by JavaScript (16%), Python (16%), SQL (12%).
Show all (10)
What frameworks and libraries does OCLC use?
JUnit is named in 8% of job postings at OCLC, followed by React.js (8%), Spring Boot (8%), Angular (4%).
Show all (16)
What databases does OCLC use?
PostgreSQL is named in 12% of job postings at OCLC, followed by MySQL (8%), Amazon Aurora (4%), DynamoDB (4%).
PostgreSQL
3 12%
MySQL
2 8%
Amazon Aurora
1 4%
DynamoDB
1 4%
ElasticSearch
1 4%
OpenSearch
1 4%
Snowflake
1 4%
What cloud and platforms does OCLC use?
AWS is named in 16% of job postings at OCLC, followed by Linux (8%), Power BI (8%), Unix (8%).
Show all (16)
What developer tools does OCLC use?
Rest API is named in 20% of job postings at OCLC, followed by Git (16%), Gradle (8%), Maven (8%).
Rest API
5 20%
Git
4 16%
Gradle
2 8%
Maven
2 8%
Adobe Photoshop
1 4%
Canva
1 4%
Jenkins
1 4%
Show all (9)
Which engineering practices does OCLC ask for?
Machine Learning is named in 100% of job postings at OCLC, followed by CI/CD (28%), Knowledge Graph (12%), Anomaly Detection (4%).
CI/CD
7 28%
Anomaly Detection
1 4%
Incident Management
1 4%
Self-Healing
1 4%
Show all (9)
What does each OCLC team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
10 postingsHow does your stack fit OCLC?
How is the OCLC 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 OCLC stack?
OCLC scores 76 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: 1; legacy ones: 0.
How common is the OCLC stack in its industry?
Share of the 208 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like OCLC
Questions about the OCLC tech stack
What programming languages does OCLC use?
The languages named in OCLC job postings are Java (28%), JavaScript (16%), Python (16%), SQL (12%), TypeScript (8%), as a share of the 25 postings of the last 12 months.
Does OCLC use JUnit?
Yes. JUnit is named in 2 of 25 job postings (8%) and required in 2 of them.
What cloud and platforms does OCLC use?
The cloud and platforms named in OCLC job postings are AWS (4), Linux (2), Power BI (2) (postings in brackets).
What skills do you need for a Backend job at OCLC?
Backend postings at OCLC most often require Rest API (5), Java (4), Git (3), AWS (2), out of 10 postings in the last 12 months.
Is the OCLC tech stack changing?
Yes. Knowledge Graph, MySQL, Linux, TypeScript first appeared in OCLC job postings in the last six months.
How modern is the OCLC tech stack?
OCLC scores 76 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: 1; legacy ones: 0.
How does Alion know the OCLC tech stack?
Alion reads every job posting OCLC publishes and tags the technologies each one names. The figures on this page count the 25 postings of the last 12 months and were updated on Oct 28, 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, "OCLC tech stack: 68 technologies from 25 job postings", as of Oct 28, 2026. https://alion.io/company/yourcloudlibrary/technologies