Truecaller tech stack
Truecaller builds mostly with Java, Scala, SQL, Python. Its stack also includes GCP, Apache Kafka, BigQuery, Google BigQuery. GCP is named in 14 of the 30 job postings Truecaller published in the last 12 months (47%). Counted by Alion from the job postings of Truecaller, updated Sep 28, 2026.
What programming languages does Truecaller use?
Java is named in 30% of job postings at Truecaller, followed by Scala (30%), SQL (23%), Python (23%).
What frameworks and libraries does Truecaller use?
PyTorch is named in 10% of job postings at Truecaller, followed by TensorFlow (10%), SwiftUI (7%), Flink (7%).
PyTorch
3 10%
TensorFlow
3 10%
SwiftUI
2 7%
Flink
2 7%
Scikit-learn
2 7%
Dagster
1 3%
Feast
1 3%
Jetpack Compose
1 3%
Show all (13)
What databases does Truecaller use?
BigQuery is named in 27% of job postings at Truecaller, followed by Google BigQuery (27%), Amazon Redshift (13%), Redis (13%).
BigQuery
8 27%
Google BigQuery
8 27%
Amazon Redshift
4 13%
Redis
4 13%
Cassandra
3 10%
MySQL
3 10%
PostgreSQL
3 10%
Memcached
2 7%
Show all (12)
What cloud and platforms does Truecaller use?
GCP is named in 47% of job postings at Truecaller, followed by Apache Kafka (37%), Kubernetes (30%), Spark (20%).
GCP
14 47%
Apache Kafka
11 37%
Kubernetes
9 30%
Spark
6 20%
AWS
5 17%
Azure
5 17%
AppsFlyer SDK
3 10%
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What developer tools does Truecaller use?
Git is named in 20% of job postings at Truecaller, followed by Docker (13%), Jenkins (10%), gRPC (10%).
Git
6 20%
Docker
4 13%
Jenkins
3 10%
gRPC
3 10%
Fastlane
2 7%
Copilot
2 7%
ONNX
1 3%
Prometheus
1 3%
Show all (13)
What AI and ML technologies does Truecaller use?
ChatGPT is named in 7% of job postings at Truecaller, followed by Claude (7%), Core ML (3%), LLM (3%).
Which engineering practices does Truecaller ask for?
CI/CD is named in 33% of job postings at Truecaller, followed by A/B Testing (17%), Machine Learning (17%), ETL/ELT (10%).
CI/CD
10 33%
Federated Learning
2 7%
Anomaly Detection
1 3%
Show all (23)
What other technologies does Truecaller use?
Kotlin Coroutines is named in 3% of job postings at Truecaller.
Kotlin Coroutines
1 3%
What does each Truecaller team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
6 postingsMobile
5 postingsLeadership
4 postingsData Science
4 postingsHow does your stack fit Truecaller?
How is the Truecaller 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 Truecaller stack?
Truecaller scores 84 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: 4; legacy ones: 0.
How common is the Truecaller stack in its industry?
Share of the 91 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Truecaller apart
Companies with a stack like Truecaller
Questions about the Truecaller tech stack
What programming languages does Truecaller use?
The languages named in Truecaller job postings are Java (30%), Scala (30%), SQL (23%), Python (23%), Go (17%), as a share of the 30 postings of the last 12 months.
Does Truecaller use PyTorch?
Yes. PyTorch is named in 3 of 30 job postings (10%) and required in 2 of them.
What cloud and platforms does Truecaller use?
The cloud and platforms named in Truecaller job postings are GCP (14), Apache Kafka (11), Kubernetes (9) (postings in brackets).
What skills do you need for a Backend job at Truecaller?
Backend postings at Truecaller most often require Java (6), Scala (6), Go (5), Apache Kafka (2), out of 6 postings in the last 12 months.
Is the Truecaller tech stack changing?
Yes. C#, Aerospike, ChatGPT, Claude first appeared in Truecaller job postings in the last six months.
How modern is the Truecaller tech stack?
Truecaller scores 84 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: 4; legacy ones: 0.
How does Alion know the Truecaller tech stack?
Alion reads every job posting Truecaller publishes and tags the technologies each one names. The figures on this page count the 30 postings of the last 12 months and were updated on Sep 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, "Truecaller tech stack: 107 technologies from 30 job postings", as of Sep 28, 2026. https://alion.io/company/truecaller/technologies