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Sevendos Tech Stack

Enterprise modernization and data engineering for financial services

IT Services and IT Consulting Helsinki, Uusimaa 201–500 employees Privately Held

Sevendos is a Finland-based digital services firm structured as specialized independent units under a single customer interface. The tech stack reveals a data-engineering-first operating model: Databricks, dbt, Apache Airflow, and Delta Lake anchor a modern data platform, while core banking and mainframe migration projects dominate the workload. Active hiring skews toward senior engineering and data roles—signaling both current revenue work and a push to move faster through senior-heavy staffing rather than junior scaling.

Tech Stack 45 technologies

Core StackPython Databricks Apache Airflow dbt Apache Spark PySpark Azure Data Factory AWS Glue AWS FastAPI Unity Catalog Delta Lake Java Kafka Redis TypeScript React Node.js LinkedIn SQL Azure Git CI/CD Lakehouse Spring Boot Spring MVC REST Apigee WebRTC Azure Communication Services+15 more

What Sevendos Is Building

◆Challenges

Modernizing legacy systems
Accelerating recruitment of it professionals
Mainframe migration
Grow revenue from mid-market accounts

▲Active Projects

Core banking system modernization
Risk management data products
Retail data platform
Data integration modernization
Core banking and loan systems
Cloud migration and modernization projects
Mainframe environment development and migration
Cloud migration (aws → azure)
Data warehouse
Omnichannel architecture

Hiring Activity

Accelerating6 roles · 5 in 30d

Department

Engineering

3

Data

1

HR

1

Sales

1

Seniority

Senior

3

Lead

2

Mid

1

Notable leadership hires: Account Lead

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About Sevendos

Sevendos operates as a portfolio of specialized consulting and engineering companies, each independently expert but coordinated through unified customer access. The business focuses on enterprise digital transformation: core banking system modernization, mainframe migration, retail data platforms, and cloud migration (particularly AWS to Azure). The stack spans data engineering (Databricks, Airflow, dbt, Spark), backend services (Java, Spring Boot, FastAPI), frontend (React, TypeScript), and real-time messaging (Kafka, WebRTC). Sevendos serves mid-market financial services firms managing legacy infrastructure modernization and data infrastructure buildout.

HeadquartersHelsinki, Uusimaa

Company Size201–500 employees

Hiring MarketsFinland

Frequently Asked Questions

What tech stack does Sevendos use?

Core data stack: Databricks, dbt, Apache Airflow, Apache Spark, Delta Lake. Backends: Java, Spring Boot, FastAPI. Cloud: Azure, AWS. Frontend: React, TypeScript, Node.js. Messaging: Kafka, Redis. APIs: REST, Apigee.

What is Sevendos working on?

Core banking modernization, mainframe migration to cloud (AWS/Azure), retail data platforms, data warehouse buildout, risk management data products, omnichannel architecture, and data integration modernization projects.