Position: Team Lead
Category: Scala
English level: fluent
Years of experience: 11

Some achievements:
- In a project of migration OLAP solution from Oracle to big data stack (apache hive with tez engine) I improved performance of provided queries approx. 100 times: from more than a day to less than half an hour
- On latest project optimized cloud costs by 20% while operational data was increased 2 times: from 4Tb to 8Tb
- designed and implemented multi-granular solution on the top of Apache Druid tables which gives an ability to make arbitrary aggregation queries on dataset up to 400 time smaller than original and which produces the same results
- Also I interviewed and mentored people, led several big data education projects for trainees, was involved into creation of big data studying material, delivered education lectures on NoSql
I have been working in development since 2007.
For last 5 year I have mostly been doing Big Data engineering with some DevOps and DWBI activities.
Currently I lead a team of 4 engineers.

Things I think I know to some extent:
Java, Scala, Kotlin, Python;
SQL;
Kafka, Kafka Streams, Druid, Cassandra;
Spark, Hive, NiFi, Airflow;
Helm, Kubernetes, Docker;