I was in charge of feature estimation, technology stack selection, writing the code, keep the code quality and mentoring other team members.

I was in charge of designing the API (solely) and implementing the back-end (as part of a team).

I was in charge of designing and implementing a solution for government entities to manage contracts/decisions in electronic format with e-signatures which were coming from citizens and authorities.

I was in charge of implementing parts of an IPTV provider solution for this Finnish telecom company.

I was in charge of designing a payment terminal management system (solo developer). Followed that I was creating software for payment terminals itself (two-person team project).

I was in charge of designing and developing a large-scale fault-tolerant vehicle tracking system based on a set of proprietary geoposition protocols. The system is still in use in Finland and Middle East.

I was designing and implementing a collaborative patient transportation system with vehicle tracking, availability prediction, routing, financial systems integration and real-time cost optimization.

I was in charge of designing, implementing and deploying a logistics solution for the internal transportation in the hospital. The system consists of three parts - back-end, mobile client with offline capabilities and GUI for a dispatcher workstation.

Work on query language support in the company's IDE.

I was in charge of implementation and development of several modules in a Warehouse Management System.