About hsys.dk
Professional IT Services
hsys.dk is a Danish-owned IT consultancy founded in 2008 in the Horsens area, with over 25 years of combined experience in software development and system administration.
We have delivered services to recognised companies across e-commerce, banking, finance, pension, insurance, telecommunications, healthcare, and the public sector.
Our goal is to bring a grounded, pragmatic approach to the consulting role — working closely with clients who value direct communication and simple, durable solutions.
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What we do
Software Development
We design and develop custom software with over 25 years of experience in object-oriented design (OOD) and programming (OOP). Our primary platform is Java — from early J2EE environments to modern Spring Boot and Quarkus.
We also work with Apache Camel for integration tasks, Python for scripting and data processing, and C/C++ and COBOL for legacy systems still running in production.
Experienced with both SCRUM and Kanban in large agile environments as well as classical waterfall models — delivering code focused on maintainability and test coverage.
What we do
Database & ETL
We design and implement relational databases with Oracle, PostgreSQL, MySQL, MariaDB, and DB2 as primary platforms — from data modelling to performance-tuning of very large datasets.
Extensive ETL experience: migrating from mainframe DB/2 to modern Linux platforms, from legacy CRM to new systems, and consolidating data sources across complex landscapes — always without loss of integrity.
We also work with PL/SQL in Oracle-heavy environments and SOLR/Lucene for search and indexing — ensuring your data is clean and accessible regardless of system changes.
What we do
System Administration
We handle administration of Unix, Linux, and FreeBSD servers at expert level — from routine maintenance and security patching to complex configuration tasks and server migrations.
We set up and operate web servers (Apache HTTPd, NGINX), application servers (JBoss/Wildfly, WebLogic), IP networks, and firewall solutions tailored to your infrastructure.
Available as ad hoc support or ongoing managed service agreements. With a focus on uptime, security, and documented infrastructure, we keep your platform running.
