HN Services Tech Stack

Legacy mainframe modernization and banking systems integration for financial services

IT Services and IT Consulting Charenton le pont 1,001–5,000 employees Founded 1983 Privately Held

HN Services is a French IT services firm specializing in mainframe systems and banking infrastructure, operating across France, Romania, Portugal, Spain, and Luxembourg since 1983. The tech stack reveals a dual-modernization arc: heavy COBOL, DB2, CICS, and z/OS usage alongside concurrent adoption of Java, Angular, AWS, GCP, and Kubernetes — a pattern consistent with phased legacy migration. Current hiring is engineering-led (65 of 84 roles) with senior-weighted seniority (45 senior vs. 3 junior), signaling either high-churn replacement or complex project staffing for the active core-banking system overhauls and multi-bank IT mergers in the pipeline.

Tech Stack 147 technologies

Core StackJava Angular Linux Go AWS Docker Kubernetes C# Azure DevOps Jira ServiceNow COBOL DB2 CICS z/OS Windows JBoss Tomcat IIS Eclipse Z/OS Mainframe GCP Azure .NET Framework Git HTML NET Core Microsoft 365 Zabbix+117 more

AdoptingCOBOL

What HN Services Is Building

◆Challenges

Maintaining legacy mainframe applications
Quality compliance reliability
Maintaining security and compliance standards
Application availability
Improving existing banking processes
High availability challenges
Complex integrated it environments
Merging it systems of multiple banks
Evolving core banking applications
Legacy system migration

▲Active Projects

Migration
Spatial communication chain analysis
Digital modulation implementation
Maintenance and evolution of core banking applications on mainframe
New data use cases on gcp platform
Maintenance of intranet and internet banking applications
Core banking system overhaul program
Bank it systems merger
Gnss solution integration
Controlup dashboard deployment

Hiring Activity

Accelerating85 roles · 45 in 30d

Department

Engineering

Data

Ops

Product

Support

Security

Seniority

Senior

Mid

Junior

Director

Intern

Manager

Notable leadership hires: IT Project Director

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About HN Services

HN Services delivers IT consulting and systems integration across financial services, insurance, retail, and industrial sectors. The firm operates with 2,300+ employees across five countries and runs HN Institut, an internal training program established in 1989 that has trained over 7,000 candidates in IT roles. Core service areas include mainframe application maintenance, digital transformation, and banking systems migration — reflected in active projects spanning core banking system overhauls, multi-bank IT mergers, and platform consolidations on modern cloud infrastructure (GCP, AWS, Azure). Pain-point patterns (legacy migration, high-availability challenges, complex integrated IT environments, security/compliance maintenance) align with the customer base of large financial institutions managing decades-old mission-critical systems.

HeadquartersCharenton le pont

Company Size1,001–5,000 employees

Founded1983

Hiring MarketsFrance, Portugal

Frequently Asked Questions

What is HN Services' tech stack?

Mainframe-centric (COBOL, DB2, CICS, z/OS) paired with modern platforms: Java, Angular, Kubernetes, Docker, AWS, GCP, Azure, .NET/C#, and banking-specific tools (ServiceNow, Jira, Azure DevOps). Currently adopting additional COBOL tooling.

What banking projects is HN Services working on?

Core banking system overhaul, multi-bank IT mergers, mainframe application evolution, intranet/internet banking maintenance, and migration to modern platforms (GCP, Kubernetes). Active pain points include legacy migration, high-availability challenges, and compliance maintenance.