Building new IoT solution which is made to be secure by design and scale to hundreds millions of devices

Java lead developer for a team building Nokia notification system, which is used in all the biggest social media and instant messaging companies. System has to handle tens of millions concurrent connections and tens of thousands messages per second. Deep technical understading of different kind of distributed databases and distributed web architectures.As the lead developer, my responsibilities includes providing user stories with sufficient technical details for implementation, act as link between our development team and our business people, providing my system knowledge in troubleshooting situations, giving implementation details in architectural meetings, carrying out technology evaluation in case of a new framework/technological solution and carrying out standard implementation activities.

Designing and implementing Nokia's payment integration platform with JavaEE. It combined over 100 mobile operator’s sms billing payment methods, all the biggest credit card companies, product catalogs, accounting, tax-engines and drm.

Part of the scrum team which implemented new feature for online gaming company. We had basic 3-tier architecture where JSF acted as presentation layer, EJBs as logic layer and Oracle as data layer.They were running WebSphere AS. My responsibility was to implement features on every step in 3-tier architecture.

Both pre-sales and post-sales engineering. Answering RFI’s and doing integration projects where SmartTrust’s products where integrated to mobile network operators own systems'.

Java EE consulting work for big publisher in Finland. Helped customer in requirements gathering, designing and implementing of their ERP system.

Created 3D viewer for MRI/CT -images with J2SE. Application was for neurosurgeons, which would help them to analyze MRI-images