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Castra Tech Stack

Swedish IT consulting firm specializing in enterprise systems and infrastructure

IT Services and IT Consulting Gothenburg, Västra Götaland County 201–500 employees Founded 2012 Privately Held

Castra is a 201–500-person Swedish consulting firm built around Java, cloud platforms (AWS, Azure, GCP), and enterprise infrastructure (Kubernetes, Docker, VMware). The hiring mix is heavily weighted toward senior engineers (65 out of 76 open roles), with meaningful pockets in security (9 roles) and data (5 roles)—a composition that reflects deep client work in regulated domains (healthcare, government) rather than product-led growth. Active projects span mobile app scaling, legacy infrastructure modernization, and security-focused work, with pain points clustered around integration complexity and compliance-heavy environments.

Tech Stack 132 technologies

Core StackJava AWS Spring Hibernate React Native TypeScript Linux Windows Server VMware Hyper-V Microsoft Exchange SQL Server Python C++ C# .NET Docker Kubernetes Azure GCP Swagger OpenAPI Git SQL Expo Citrix Embedded Linux C/C++ IAM ASP.NET Web API+102 more

What Castra Is Building

◆Challenges

High information and it security requirements
Automating customers' development processes
Modernizing legacy it infrastructure
Integration challenges
Performance optimization
Scaling mobile apps to large user volumes
Transition to cloud and hybrid solutions
High complexity healthcare projects
Eliminating dependencies and inefficiency
Improving test processes

▲Active Projects

React native / expo integration with rest apis
Samnext platform development
Sussa collaboration
Fvis implementation
Security work within fo bis
Intrusion investigations
Driftsättning av cosmic
Implementing information security management system
Ci/cd for mobile applications
Automated testing for frontend and backend

Hiring Activity

Decelerating75 roles · 10 in 30d

Department

Engineering

54

Security

9

Data

5

Ops

4

Management

1

Product

1

Sales

1

Support

1

Seniority

Senior

65

Mid

11

Notable leadership hires: Test Lead

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About Castra

Castra advises mid-market and enterprise clients across IT infrastructure, system development, and organizational transformation. The firm positions itself as a talent-driven consulting model: consultants join to maximize both technical capacity and work-life quality, supported by Great Place to Work certification and Swedish workplace awards since 2017. Core service lines include project leadership, requirements management, system development, cloud migration, test automation, and agile coaching. The client base skews toward heavily regulated sectors—healthcare and government agencies feature prominently in project descriptions—where security mandates, legacy modernization, and infrastructure-as-code transitions dominate engagement scope.

HeadquartersGothenburg, Västra Götaland County

Company Size201–500 employees

Founded2012

Hiring MarketsSweden

Frequently Asked Questions

What tech stack does Castra use?

Java, AWS, Azure, GCP, Spring, Docker, Kubernetes, React Native, TypeScript, Python, C/C++, .NET, and Windows Server / Linux infrastructure management (VMware, Hyper-V, Citrix).

What is Castra working on?

Mobile app scaling (React Native / Expo), legacy IT modernization, cloud and hybrid transitions, security implementation (intrusion investigations, information security management systems), and CI/CD automation for regulated clients in healthcare and government.