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GROUPAMA - G2S Tech Stack

IT transformation services for a 12M-member insurance mutual

Information Technology & Services France 1,001–5,000 employees Founded 2011 Privately Held

G2S is the internal technology backbone of Groupama, a European insurance mutual with 12 million members. The org is mid-modernization: core stack spans mainframe (COBOL, z/OS, DB2), enterprise data (Oracle, Spark, Hadoop), and emerging cloud-native (Kafka, Azure, OpenTelemetry adoption). Active hiring skews heavily engineering and data (27 + 15 roles), with senior/intern distribution suggesting both legacy system stewardship and greenfield platform builds. Projects cluster around pricing engine rewrites, microservices migration, and real-time data architecture—typical pain points for large insurers balancing operational scale against modernization velocity.

Tech Stack 91 technologies

Core StackApache Spark Scala Linux Oracle Hadoop SAP Informatica Power BI PL/SQL Jira Confluence Java OpenShift Grafana UNIX Git Oracle Exadata Excel PowerPoint TOGAF ArchiMate Enterprise Architect SQL Developer Teams CICS DB2 ISPF COBOL IBM z/OS Spring Boot+57 more

AdoptingKafka OpenTelemetry Visual Studio Code Azure

What GROUPAMA - G2S Is Building

◆Challenges

Complex it environments
Industrializing development processes
Data-centric real-time architecture
Supporting growth of ia particuliers activity
Maintaining legacy mainframe applications
Streamlining pricing workflows
Transformation of pricing processes
Modernizing development environments
Modernizing pricing tools
Optimizing data processing performance

▲Active Projects

Starc program
Microservices architecture transformation
Power automate flow development
New pricing engine
Pricing flow orchestration component
Devenir champion de l’accompagnement de nos clients
Spark decision center
Industrialization of development processes
Transformation vers des solutions de mobilité à faibles émissions
Déployer la stratégie de mobilité douce

Hiring Activity

Accelerating55 roles · 30 in 30d

Department

Engineering

27

Data

15

Ops

4

Marketing

3

HR

2

Finance

1

Security

1

Support

1

Seniority

Senior

21

Intern

15

Lead

6

Manager

5

Mid

5

Junior

2

Notable leadership hires: Tech Lead

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About GROUPAMA - G2S

G2S operates as the dedicated IT and innovation arm of Groupama, serving the group's underwriting, claims, and customer-facing operations across roughly 10 sites in France. The organization spans 1,500 employees across IT, real estate, and procurement functions. Core focus areas include data platforms (Spark, Hadoop, Oracle Exadata), cybersecurity, and AI—all channeled toward building products and services that directly impact Groupama's 12 million members and clients. The stack reflects a hybrid enterprise: legacy mainframe applications coexist with modern data pipelines and microservices work, while recent investments in Kafka and Azure signal movement toward real-time, cloud-hosted architectures.

HeadquartersFrance

Company Size1,001–5,000 employees

Founded2011

Hiring MarketsFrance

Frequently Asked Questions

What is G2S and what does it do?

G2S is the internal technology division of Groupama, a European insurance mutual. It delivers IT infrastructure, data platforms, AI, and cybersecurity services to support Groupama's 12 million members and clients across France.

What tech stack does G2S use?

G2S operates a hybrid stack: mainframe (COBOL, z/OS, DB2), enterprise data (Oracle, Spark, Hadoop, SAP), and emerging cloud-native (Kafka, Azure, OpenTelemetry). Development tools include Java, Spring Boot, OpenShift, Git, Jira.