# Fiserv - **Answer**: 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. - **Window days**: 365 - **Postings analysed**: 609 - **Open postings**: 152 - **Technologies in use**: 388 - **Modernity score**: 78 - **Ai adoption**: yes - **License**: CC BY-SA 4.0 ## Company - **Id**: 2459 - **Name**: Fiserv - **Domain**: fiserv.com - **Url**: ## Technologies - **CI/CD** — Layer: practices; Postings: 236; Share: 0.3875; Required: 199; Open postings: 58; First seen: 2026-07-06 - **AWS** — Layer: cloud; Postings: 218; Share: 0.358; Required: 183; Open postings: 55; First seen: 2026-07-06 - **SQL** — Layer: languages; Postings: 196; Share: 0.3218; Required: 170; Open postings: 49; First seen: 2026-07-06 - **Azure** — Layer: cloud; Postings: 193; Share: 0.3169; Required: 153; Open postings: 39; First seen: 2026-07-17 - **Java** — Layer: languages; Postings: 172; Share: 0.2824; Required: 155; Open postings: 47; First seen: 2026-07-06 - **Kubernetes** — Layer: cloud; Postings: 155; Share: 0.2545; Required: 114; Open postings: 34; First seen: 2026-07-06 - **GCP** — Layer: cloud; Postings: 146; Share: 0.2397; Required: 119; Open postings: 28; First seen: 2026-07-17 - **Python** — Layer: languages; Postings: 137; Share: 0.225; Required: 119; Open postings: 34; First seen: 2026-07-09 - **Docker** — Layer: tools; Postings: 89; Share: 0.1461; Required: 63; Open postings: 10; First seen: 2026-07-06 - **Rest API** — Layer: tools; Postings: 87; Share: 0.1429; Required: 80; Open postings: 29; First seen: 2026-07-06 - **C#** — Layer: languages; Postings: 80; Share: 0.1314; Required: 72; Open postings: 16; First seen: 2026-07-17 - **JavaScript** — Layer: languages; Postings: 76; Share: 0.1248; Required: 52; Open postings: 13; First seen: 2026-07-22 - **Spring Boot** — Layer: frameworks; Postings: 65; Share: 0.1067; Required: 58; Open postings: 14; First seen: 2026-07-06 - **Apache Kafka** — Layer: cloud; Postings: 63; Share: 0.1034; Required: 50; Open postings: 24; First seen: 2026-07-06 - **Power BI** — Layer: cloud; Postings: 60; Share: 0.0985; Required: 38; Open postings: 10; First seen: 2026-07-21 - **Git** — Layer: tools; Postings: 57; Share: 0.0936; Required: 47; Open postings: 12; First seen: 2026-07-22 - **Jenkins** — Layer: tools; Postings: 51; Share: 0.0837; Required: 42; Open postings: 12; First seen: 2026-07-06 - **Splunk** — Layer: cloud; Postings: 49; Share: 0.0805; Required: 28; Open postings: 13; First seen: 2026-07-06 - **Terraform** — Layer: tools; Postings: 48; Share: 0.0788; Required: 41; Open postings: 8; First seen: 2026-07-06 - **TypeScript** — Layer: languages; Postings: 48; Share: 0.0788; Required: 31; Open postings: 8; First seen: 2026-07-22 - **C++** — Layer: languages; Postings: 46; Share: 0.0755; Required: 43; Open postings: 15; First seen: 2026-07-17 - **Copilot** — Layer: tools; Postings: 45; Share: 0.0739; Required: 29; Open postings: 11; First seen: 2026-07-06 - **Snowflake** — Layer: data; Postings: 45; Share: 0.0739; Required: 29; Open postings: 14; First seen: 2026-07-21 - **AI Agents** — Layer: practices; Postings: 43; Share: 0.0706; Required: 34; Open postings: 8; First seen: 2026-07-22 - **Microsoft Excel** — Layer: tools; Postings: 40; Share: 0.0657; Required: 37; Open postings: 12; First seen: 2026-08-13 - **PostgreSQL** — Layer: data; Postings: 39; Share: 0.064; Required: 34; Open postings: 11; First seen: 2026-07-06 - **Linux** — Layer: cloud; Postings: 36; Share: 0.0591; Required: 28; Open postings: 5; First seen: 2026-07-23 - **GitLab** — Layer: cloud; Postings: 35; Share: 0.0575; Required: 30; Open postings: 4; First seen: 2026-07-27 - **Machine Learning** — Layer: practices; Postings: 35; Share: 0.0575; Required: 30; Open postings: 11; First seen: 2026-07-06 - **MySQL** — Layer: data; Postings: 35; Share: 0.0575; Required: 29; Open postings: 8; First seen: 2026-07-27 - **Postman** — Layer: cloud; Postings: 35; Share: 0.0575; Required: 28; Open postings: 8; First seen: 2026-07-28 - **Incident Management** — Layer: practices; Postings: 33; Share: 0.0542; Required: 30; Open postings: 13; First seen: 2026-07-06 - **LLM** — Layer: ai; Postings: 33; Share: 0.0542; Required: 28; Open postings: 10; First seen: 2026-07-06 - **Windows** — Layer: cloud; Postings: 33; Share: 0.0542; Required: 26; Open postings: 2; First seen: 2026-07-23 - **GitHub** — Layer: cloud; Postings: 32; Share: 0.0525; Required: 25; Open postings: 1; First seen: 2026-07-17 - **PowerShell** — Layer: languages; Postings: 31; Share: 0.0509; Required: 26; Open postings: 8; First seen: 2026-07-09 - **Dynatrace** — Layer: cloud; Postings: 30; Share: 0.0493; Required: 16; Open postings: 11; First seen: 2026-07-06 - **Platform Engineering** — Layer: practices; Postings: 29; Share: 0.0476; Required: 28; Open postings: 7; First seen: 2026-07-06 - **React.js** — Layer: frameworks; Postings: 29; Share: 0.0476; Required: 20; Open postings: 9; First seen: 2026-07-22 - **OpenShift** — Layer: cloud; Postings: 29; Share: 0.0476; Required: 19; Open postings: 5; First seen: 2026-07-27 - **Ansible** — Layer: tools; Postings: 28; Share: 0.046; Required: 28; Open postings: 4; First seen: 2026-07-25 - **RAG** — Layer: practices; Postings: 26; Share: 0.0427; Required: 19; Open postings: 9; First seen: 2026-07-22 - **GitLab CI** — Layer: cloud; Postings: 25; Share: 0.0411; Required: 14; Open postings: 5; First seen: 2026-07-06 - **Go** — Layer: languages; Postings: 24; Share: 0.0394; Required: 18; Open postings: 9; First seen: 2026-07-28 - **IAM** — Layer: practices; Postings: 23; Share: 0.0378; Required: 22; Open postings: 5; First seen: 2026-07-22 - **ETL/ELT** — Layer: practices; Postings: 22; Share: 0.0361; Required: 22; Open postings: 4; First seen: 2026-07-22 - **.NET** — Layer: cloud; Postings: 22; Share: 0.0361; Required: 18; Open postings: 4; First seen: 2026-07-24 - **COBOL** — Layer: languages; Postings: 22; Share: 0.0361; Required: 18; Open postings: 5; First seen: 2026-07-29 - **Angular** — Layer: frameworks; Postings: 21; Share: 0.0345; Required: 19; Open postings: 2; First seen: 2026-07-24 - **Selenium** — Layer: frameworks; Postings: 21; Share: 0.0345; Required: 19; Open postings: 3; First seen: 2026-07-17 - … 338 more in the JSON form ## Changes ### First appeared - **Azure Cosmos DB** — First seen: 2026-10-21 - **Fine-tuning** — First seen: 2026-10-21 - **Structured Outputs** — First seen: 2026-10-21 - **XGBoost** — First seen: 2026-10-21 - **Knowledge Distillation** — First seen: 2026-10-21 - **LoRA** — First seen: 2026-10-21 - **MLFlow** — First seen: 2026-10-21 - **Model Distillation** — First seen: 2026-10-21 ### Rising - **Microsoft Excel** — Share from: 0; Share to: 8 - **Power BI** — Share from: 5; Share to: 11 - **C++** — Share from: 5; Share to: 8 - **PowerShell** — Share from: 3; Share to: 6 - **Spark** — Share from: 0; Share to: 3 - **Databricks** — Share from: 0; Share to: 3 ### Falling - **CI/CD** — Share from: 57; Share to: 34 - **AWS** — Share from: 51; Share to: 32 - **Kubernetes** — Share from: 40; Share to: 21 - **Java** — Share from: 42; Share to: 24 - **Python** — Share from: 34; Share to: 19 - **JavaScript** — Share from: 24; Share to: 9 - **Docker** — Share from: 24; Share to: 12 - **Spring Boot** — Share from: 20; Share to: 8 ## Similar stacks - [Synechron](https://alion.io/company/synechron/technologies) — Shared technologies: 286 - [Barclays](https://alion.io/company/barclays-uk/technologies) — Shared technologies: 300 - [GFT Technologies](https://alion.io/company/gft-technologies/technologies) — Shared technologies: 285 - [FIS](https://alion.io/company/fis/technologies) — Shared technologies: 281 - [Zensar Technologies](https://alion.io/company/zensar-technologies/technologies) — Shared technologies: 318 - [EPAM Systems](https://alion.io/company/epam-systems/technologies) — Shared technologies: 304 - [Wells Fargo](https://alion.io/company/wells-fargo/technologies) — Shared technologies: 254 - [London Stock Exchange Group](https://alion.io/company/lseg/technologies) — Shared technologies: 264 --- [Page](https://alion.io/company/fiserv/technologies) · [JSON](https://alion.io/company/fiserv/technologies.json) Source: Alion (alion.io), 2026-11-11. 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