# Truecaller - **Answer**: 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 14, 2026. - **Window days**: 365 - **Postings analysed**: 34 - **Open postings**: 21 - **Technologies in use**: 108 - **Modernity score**: 84 - **Ai adoption**: yes - **License**: CC BY-SA 4.0 ## Company - **Id**: 9023 - **Name**: Truecaller - **Domain**: truecaller.com - **Url**: ## Technologies - **GCP** — Layer: cloud; Postings: 16; Share: 0.4706; Required: 12; Open postings: 10; First seen: 2026-01-15 - **Apache Kafka** — Layer: cloud; Postings: 12; Share: 0.3529; Required: 9; Open postings: 7; First seen: 2026-03-31 - **CI/CD** — Layer: practices; Postings: 11; Share: 0.3235; Required: 11; Open postings: 9; First seen: 2026-01-15 - **Kubernetes** — Layer: cloud; Postings: 11; Share: 0.3235; Required: 10; Open postings: 8; First seen: 2026-01-15 - **Java** — Layer: languages; Postings: 9; Share: 0.2647; Required: 9; Open postings: 6; First seen: 2026-06-17 - **Google BigQuery** — Layer: data; Postings: 9; Share: 0.2647; Required: 8; Open postings: 8; First seen: 2026-03-31 - **Scala** — Layer: languages; Postings: 9; Share: 0.2647; Required: 8; Open postings: 5; First seen: 2026-03-31 - **Python** — Layer: languages; Postings: 8; Share: 0.2353; Required: 6; Open postings: 6; First seen: 2026-03-31 - **SQL** — Layer: languages; Postings: 7; Share: 0.2059; Required: 6; Open postings: 6; First seen: 2026-06-17 - **AWS** — Layer: cloud; Postings: 6; Share: 0.1765; Required: 6; Open postings: 5; First seen: 2026-01-15 - **Azure** — Layer: cloud; Postings: 6; Share: 0.1765; Required: 6; Open postings: 5; First seen: 2026-01-15 - **Git** — Layer: tools; Postings: 6; Share: 0.1765; Required: 6; Open postings: 6; First seen: 2026-06-17 - **Go** — Layer: languages; Postings: 6; Share: 0.1765; Required: 6; Open postings: 4; First seen: 2026-06-17 - **Spark** — Layer: cloud; Postings: 6; Share: 0.1765; Required: 5; Open postings: 5; First seen: 2026-03-31 - **A/B Testing** — Layer: practices; Postings: 5; Share: 0.1471; Required: 5; Open postings: 2; First seen: 2026-07-02 - **Machine Learning** — Layer: practices; Postings: 5; Share: 0.1471; Required: 5; Open postings: 3; First seen: 2026-03-31 - **Amazon Redshift** — Layer: data; Postings: 4; Share: 0.1176; Required: 4; Open postings: 3; First seen: 2026-03-31 - **Feature Store** — Layer: practices; Postings: 4; Share: 0.1176; Required: 4; Open postings: 3; First seen: 2026-07-02 - **MySQL** — Layer: data; Postings: 4; Share: 0.1176; Required: 4; Open postings: 3; First seen: 2026-01-15 - **PostgreSQL** — Layer: data; Postings: 4; Share: 0.1176; Required: 4; Open postings: 3; First seen: 2026-01-15 - **Docker** — Layer: tools; Postings: 4; Share: 0.1176; Required: 3; Open postings: 2; First seen: 2026-01-15 - **GitHub** — Layer: cloud; Postings: 4; Share: 0.1176; Required: 3; Open postings: 0; First seen: 2026-02-11 - **Redis** — Layer: data; Postings: 4; Share: 0.1176; Required: 2; Open postings: 2; First seen: 2026-03-31 - **AppsFlyer SDK** — Layer: cloud; Postings: 3; Share: 0.0882; Required: 3; Open postings: 2; First seen: 2026-06-17 - **Cassandra** — Layer: data; Postings: 3; Share: 0.0882; Required: 3; Open postings: 0; First seen: 2026-03-31 - **ETL/ELT** — Layer: practices; Postings: 3; Share: 0.0882; Required: 3; Open postings: 3; First seen: 2026-07-02 - **Google GKE** — Layer: cloud; Postings: 3; Share: 0.0882; Required: 3; Open postings: 2; First seen: 2026-01-15 - **IAM** — Layer: practices; Postings: 3; Share: 0.0882; Required: 3; Open postings: 2; First seen: 2026-01-15 - **Jenkins** — Layer: tools; Postings: 3; Share: 0.0882; Required: 3; Open postings: 3; First seen: 2026-07-02 - **Kotlin** — Layer: languages; Postings: 3; Share: 0.0882; Required: 3; Open postings: 3; First seen: 2026-06-17 - **Linux** — Layer: cloud; Postings: 3; Share: 0.0882; Required: 3; Open postings: 2; First seen: 2026-01-15 - **Looker** — Layer: cloud; Postings: 3; Share: 0.0882; Required: 3; Open postings: 3; First seen: 2026-06-17 - **Memcached** — Layer: data; Postings: 3; Share: 0.0882; Required: 3; Open postings: 3; First seen: 2026-01-15 - **Rest API** — Layer: tools; Postings: 3; Share: 0.0882; Required: 3; Open postings: 3; First seen: 2026-06-17 - **ScyllaDB** — Layer: data; Postings: 3; Share: 0.0882; Required: 3; Open postings: 3; First seen: 2026-01-15 - **gRPC** — Layer: tools; Postings: 3; Share: 0.0882; Required: 3; Open postings: 1; First seen: 2026-03-31 - **Flink** — Layer: frameworks; Postings: 3; Share: 0.0882; Required: 2; Open postings: 2; First seen: 2026-03-31 - **PyTorch** — Layer: frameworks; Postings: 3; Share: 0.0882; Required: 2; Open postings: 2; First seen: 2026-07-02 - **TensorFlow** — Layer: frameworks; Postings: 3; Share: 0.0882; Required: 2; Open postings: 2; First seen: 2026-07-02 - **Claude** — Layer: ai; Postings: 3; Share: 0.0882; Required: 1; Open postings: 2; First seen: 2026-07-16 - **Android SDK** — Layer: cloud; Postings: 2; Share: 0.0588; Required: 2; Open postings: 2; First seen: 2026-06-17 - **C#** — Layer: languages; Postings: 2; Share: 0.0588; Required: 2; Open postings: 1; First seen: 2026-07-16 - **Crashlytics** — Layer: cloud; Postings: 2; Share: 0.0588; Required: 2; Open postings: 2; First seen: 2026-06-17 - **Fastlane** — Layer: tools; Postings: 2; Share: 0.0588; Required: 2; Open postings: 1; First seen: 2026-02-11 - **Feast** — Layer: frameworks; Postings: 2; Share: 0.0588; Required: 2; Open postings: 2; First seen: 2026-07-02 - **Federated Learning** — Layer: practices; Postings: 2; Share: 0.0588; Required: 2; Open postings: 1; First seen: 2026-07-02 - **Firebase** — Layer: cloud; Postings: 2; Share: 0.0588; Required: 2; Open postings: 2; First seen: 2026-06-17 - **GitHub Actions** — Layer: cloud; Postings: 2; Share: 0.0588; Required: 2; Open postings: 1; First seen: 2026-02-11 - **Incident Management** — Layer: practices; Postings: 2; Share: 0.0588; Required: 2; Open postings: 2; First seen: 2026-01-15 - **Platform Engineering** — Layer: practices; Postings: 2; Share: 0.0588; Required: 2; Open postings: 2; First seen: 2026-07-27 - … 58 more in the JSON form ## Changes ### First appeared - **SLI/SLO/SLA** — First seen: 2026-10-23 - **Platform Engineering** — First seen: 2026-07-27 - **Claude** — First seen: 2026-07-16 - **C#** — First seen: 2026-07-16 - **Aerospike** — First seen: 2026-07-16 - **ChatGPT** — First seen: 2026-07-16 - **Copilot** — First seen: 2026-07-16 - **Kubeflow** — First seen: 2026-07-13 ### Falling - **Apache Kafka** — Share from: 48; Share to: 10 - **SQL** — Share from: 33; Share to: 0 - **Spark** — Share from: 24; Share to: 0 - **Google BigQuery** — Share from: 33; Share to: 10 - **Scala** — Share from: 33; Share to: 10 - **GCP** — Share from: 52; Share to: 30 - **Python** — Share from: 29; Share to: 10 - **Machine Learning** — Share from: 19; Share to: 0 ## Similar stacks - [Roku](https://alion.io/company/roku-2/technologies) — Shared technologies: 71 - [InMobi](https://alion.io/company/inmobi/technologies) — Shared technologies: 83 - [Appier](https://alion.io/company/appier-2/technologies) — Shared technologies: 74 - [Reddit](https://alion.io/company/reddit/technologies) — Shared technologies: 71 - [Delivery Hero](https://alion.io/company/delivery-hero/technologies) — Shared technologies: 85 - [Mercari](https://alion.io/company/mercari/technologies) — Shared technologies: 74 - [Zalo](https://alion.io/company/zalo-2/technologies) — Shared technologies: 71 - [JioStar](https://alion.io/company/jio-star/technologies) — Shared technologies: 77 --- [Page](https://alion.io/company/truecaller/technologies) · [JSON](https://alion.io/company/truecaller/technologies.json) Source: Alion (alion.io), 2026-11-14. 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