Jonatan developed a new website with a contact form for a HVAC company.

Jonatan developed and maintained various public services, handling both front-end and back-end tasks.

Jonatan began with maintenance tasks at Ice, later contributing to the development of MobilBytte and iceTrygg services.

Jonatan worked in a KANBAN team, handling maintenance tasks, daily stand-ups, backlog refinement, TDD, code reviews, and GDPR compliance.

Jonatan developed webhook functionality for applications to subscribe to system events, enhancing CRM systems with better customer data.

Jonatan handled task planning, daily stand-ups, programming, peer reviews, and ensured clean code using SOLID, TDD, and continuous development.

Jonatan maintained and developed FIDO at Bane NOR, participated in stand-ups, on-call duty, and improved functionalities for train controllers and traffic info.

Jonatan focused on getting the first version of Tjenestekalenderen into production.

Jonatan handled full-stack programming, including file import, database & ORM management, and API implementation for Skoleporten's news and info interface.

Jonatan collaborated with payroll staff to specify sick leave formats and rules, and implemented export functionality for the system's desktop app.

Jonatan advised on technical requirements, designed a database model, developed applications for Express Passes and admin tasks, and conducted performance tests

Jonatan revised the continuity plan, conducted preparedness exercises, and developed Liseberg's IT security strategic framework with the IT manager.

Jonatan ensured software integration with hardware across various systems, worked in IT operations, and managed payment terminal integration and support.