SIX Tech Stack

European exchange and payments infrastructure operator with 90+ years in securities and financial services

Financial Services Zurich 1,001–5,000 employees Public Company

SIX operates the critical plumbing for Swiss and Spanish financial markets—securities trading, clearing, settlement, and payments—across a 4,000-person organization spanning 19 countries. The tech stack reveals a dual-mode infrastructure: legacy enterprise systems (SAP, Exchange Server, RPA) underpinning settlement and clearing operations, layered with modern cloud (Azure, Databricks, Docker) and emerging AI tooling (OpenAI, LangChain, Pinecone, Weaviate) for data analytics and real-time services.

Tech Stack 117 technologies

Core StackJira Confluence Java Angular SAP Azure DevOps Terraform Python FastAPI Docker LangChain OpenAI Pinecone Weaviate Databricks RPA SAFe Excel SQL Microsoft Office Spring Boot Azure Exchange Online Exchange Server Git LangGraph Hugging Face Transformers Chroma Azure Machine Learning SharePoint+85 more

AdoptingGitHub Copilot GitLab Ansible ArgoCD

What SIX Is Building

◆Challenges

High availability
Maintaining system stability
Migration to hybrid email environment
Expanding security compliance requirements
Enhancing automation and efficiency across sdlc
Platform resilience for global deployments
Data accuracy
Observability
Meeting strategic business security goals
Real-time financial data processing

▲Active Projects

Instant payments
Bastion environment deployment
Development of microsoft exchange infrastructure
Integration of new services into mail backbone
Workplace solutions integration
System upgrades and migrations
Taxonomy and naming standardization
Corporate action data mapping framework
Reference linkage design for bonds
Batch and event-driven workflow design

Hiring Activity

Accelerating120 roles · 65 in 30d

Department

Engineering

Data

Sales

Ops

Finance

Product

Legal

Security

Seniority

Senior

Mid

Junior

Intern

Lead

Director

Manager

Notable leadership hires: Quality Assurance Lead

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About SIX

SIX is a major European exchange operator and financial services infrastructure provider, running the Swiss and Spanish stock exchanges and serving as a critical hub for securities trading, clearing, settlement, and payment processing. The company caters to banks, brokers, and financial institutions across Europe and globally, offering integrated services in securities information, FinTech connectivity, and payments alongside traditional exchange operations. With 4,000 employees operating across 19 countries, SIX maintains the stable, high-availability infrastructure that underpins European financial market operations while modernizing its core systems—transitioning legacy email and exchange infrastructure, standardizing data taxonomies, and building new instant-payment and real-time workflow capabilities.

HeadquartersZurich

Company Size1,001–5,000 employees

Hiring MarketsPoland, United Kingdom, Germany, Switzerland, Singapore, Spain

Frequently Asked Questions

What tech stack does SIX use?

SIX runs SAP, SQL Server, Exchange Server, and RPA for core settlement and operations, alongside Azure cloud, Databricks, Docker, and Spring Boot. Recent adoption includes GitHub Copilot, GitLab, Ansible, and ArgoCD for modernization; AI integration via OpenAI, LangChain, and vector databases (Pinecone, Weaviate, Chroma).

What is SIX working on?

Active projects include instant payments capability, Microsoft Exchange infrastructure migration to hybrid email, bastion environment deployment, corporate action data mapping, bond reference linkage design, and batch/event-driven workflow architecture—indicating modernization of settlement systems and real-time financial data processing.