Truecaller tech stack
Truecaller builds mostly with Java, Scala, Python, SQL. Its stack also includes GCP, Apache Kafka, Google BigQuery, Amazon Redshift. GCP is named in 16 of the 34 job postings Truecaller published in the last 12 months (47%). Counted by Alion from the job postings of Truecaller, updated Nov 13, 2026.
What programming languages does Truecaller use?
Java is named in 26% of job postings at Truecaller, followed by Scala (26%), Python (24%), SQL (21%).
What frameworks and libraries does Truecaller use?
Flink is named in 9% of job postings at Truecaller, followed by PyTorch (9%), TensorFlow (9%), Feast (6%).
Flink
3 9%
PyTorch
3 9%
TensorFlow
3 9%
Feast
2 6%
SwiftUI
2 6%
Scikit-learn
2 6%
Dagster
1 3%
Jetpack Compose
1 3%
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What databases does Truecaller use?
Google BigQuery is named in 26% of job postings at Truecaller, followed by Amazon Redshift (12%), MySQL (12%), PostgreSQL (12%).
Google BigQuery
9 26%
Amazon Redshift
4 12%
MySQL
4 12%
PostgreSQL
4 12%
Redis
4 12%
Cassandra
3 9%
Memcached
3 9%
ScyllaDB
3 9%
Show all (11)
What cloud and platforms does Truecaller use?
GCP is named in 47% of job postings at Truecaller, followed by Apache Kafka (35%), Kubernetes (32%), AWS (18%).
GCP
16 47%
Apache Kafka
12 35%
Kubernetes
11 32%
AWS
6 18%
Azure
6 18%
Spark
6 18%
GitHub
4 12%
AppsFlyer SDK
3 9%
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What developer tools does Truecaller use?
Git is named in 18% of job postings at Truecaller, followed by Docker (12%), Jenkins (9%), Rest API (9%).
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What AI and ML technologies does Truecaller use?
Claude is named in 9% of job postings at Truecaller, followed by LLM (6%), ChatGPT (6%), Core ML (3%).
Which engineering practices does Truecaller ask for?
CI/CD is named in 32% of job postings at Truecaller, followed by A/B Testing (15%), Machine Learning (15%), Feature Store (12%).
CI/CD
11 32%
Federated Learning
2 6%
Incident Management
2 6%
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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
5 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 394 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 (26%), Scala (26%), Python (24%), SQL (21%), Go (18%), as a share of the 34 postings of the last 12 months.
Does Truecaller use Flink?
Yes. Flink is named in 3 of 34 job postings (9%) and required in 2 of them.
What cloud and platforms does Truecaller use?
The cloud and platforms named in Truecaller job postings are GCP (16), Apache Kafka (12), Kubernetes (11) (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. SLI/SLO/SLA, Platform Engineering, Claude, C# 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 34 postings of the last 12 months and were updated on Nov 13, 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: 108 technologies from 34 job postings", as of Nov 13, 2026. https://alion.io/company/truecaller/technologies