Yomani Payment Terminal software

Developing software for a payment terminal which allowed to conquer the whole market of Finland in just few months. Innovative ideas of payment flow prediction to speedup the process allowed sellers to increase volumes by serving customers faster and by attracting shoppers with queue-free shops. Ability to apply a custom UI and workflows helped merchants to adjust the PoS to their business and to avoid adjusting their payment flow to the terminal's one.

Cargo position tracking

I was designing and implementing large-scale (tens of thousands vehicles) fault-tolerant vehicle tracking solution (geopositioning) for customers in Finland and Middle East.

Fraud prevention system

My role was: Senior Scala Developer My responsibilities included feature estimation, technical decision making, mentoring team members, keeping the code quality. I was in charge of batch and real-time processing pipelines - Spark, distributed caches and databases.