Solidaris Vlaanderen Tech Stack

Belgian health mutual fund modernizing legacy mainframe infrastructure with cloud data platforms

Hospitals and Health Care Brussel 1,001–5,000 employees Founded 1913 Nonprofit

Solidaris is a health mutual fund (1.9M members across Flanders) built on decades-old IBM mainframe architecture—CICS, DB2, MQ, z/OS—but actively migrating toward cloud analytics infrastructure (Azure, Databricks, Snowflake, Microsoft Fabric). The tech stack shift, combined with active projects around enterprise data modeling and lakehouse setup, signals a multi-year digital transformation away from mainframe dependency. Engineering and data hiring remain lean but focused.

Tech Stack 20 technologies

Core StackPython PySpark Databricks Snowflake Microsoft Office IBM z/OS CICS DB2 IBM Mainframe z/OS TCP/IP IBM MQ PL/I REXX IBM Workload Scheduler SQL Microsoft Fabric Azure Excel

What Solidaris Vlaanderen Is Building

◆Challenges

Optimizing volunteer workflows
Expanding volunteer engagement
Maintaining legacy mainframe systems
Data platform maintenance
Implementing technology upgrades
Building service portfolio
Maintaining high user satisfaction
Adapting to changing regulations
Ensuring operational resilience
Managing outsourcing risk

▲Active Projects

Enterprise data model (edm) development
Data pipeline development
Lakehouse setup
Technology upgrade implementation
Service portfolio development
Implementation of dora
Business continuity and disaster recovery planning
Adfinity/easi rollout

Hiring Activity

Accelerating9 roles · 5 in 30d

Department

Engineering

Ops

Data

Finance

Healthcare

Seniority

Mid

Senior

Manager

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About Solidaris Vlaanderen

Solidaris (formed in 2022 from a merger of three regional health mutuals) manages healthcare coverage and benefits for 1.9 million members in Flanders, Belgium. The organization operates as a nonprofit with 1,001–5,000 employees and provides accessible, affordable healthcare services across Flanders. Operationally, Solidaris is in transition: it maintains a production environment on IBM mainframes while laying groundwork for modern data infrastructure (data pipelines, lakehouse architecture, enterprise data modeling). Current priorities include technology upgrades, service portfolio development, and operational resilience planning.

HeadquartersBrussel

Company Size1,001–5,000 employees

Founded1913

Hiring MarketsBelgium

Frequently Asked Questions

What is Solidaris Vlaanderen?

A Belgian health mutual fund covering 1.9 million members in Flanders. Founded as a nonprofit in 1913, it merged three regional mutuals into Solidaris in 2022. It provides accessible healthcare coverage and benefits services.

What tech stack does Solidaris use?

Solidaris runs IBM mainframes (z/OS, CICS, DB2, MQ) for core systems and is adopting cloud platforms: Azure, Databricks, Snowflake, and Microsoft Fabric for data infrastructure. Also uses Python, PySpark, and SQL for analytics.