Position: Solution Architect, CTO
Category: Lead
English level: fluent
Years of experience: 11

Designed and delivered single sign-on solution for 6 different independent system with total user count about 50 millions
Designed and delivered legacy system replacement in 6 month instead of planned 8 by simplifying requirements
Decreased client's cloud monthly bill by $130 000 by refactoring database and migrating significant part of the application to on-premise datacenter
Improved response time of overall application from 2 seconds to 300 ms
Created conditions for deprecating old mainframe that led to system maintanance and development speed improvement and cost saving
Decreased number of objects from 10 bln to 600 mln in key-value database by refactoring data schema that lead to drastical performance improvements
Summary of Qualifications
12 years of professional experience in the Information Technology industry;
Rich expertise in Java and related technologies (Java EE, Spring, SOA, Web frameworks, Enterprise messaging);
Rich experience in developing distributed applications integrated with Big Data tools (GCP Big Table, GCP Dataproc, Hadoop, GCP Dataflow), including the delivery of different binary files (images, PDF documents, tremendous matrixes of numbers and simple byte buffers);
Multiple accomplished projects with SAP stack: SAP ECC, SAP E-commerce (Hybris), SAP Data Hub, SAP Gigya;
Experience with applying Search Engines for projects needs: Apache Solr, Elasticsearch, GCP Search;
Expertise in performance measurement and improvement of back-end systems and organizing teams and environments for performance tuning tasks;
Experienced in activities devoted to software architecture and database development, knowledge of a wide range of programming languages, technologies, and platforms; refactoring of existing legacy monolith systems according to more manageable and cheap service-oriented approach;
Operations experience: implementing deployment procedures for the GCP, AWS and for premises;
Deep theoretical knowledge of using I/O efficient algorithms (buffered trees, DAGs, local functions) and experience with tools using those approaches (Apache Spark);
Ability to professionally perform, lead, and manage all activities on all stages of the project from requirements gathering and creation of architecture to deployment and QA;
Industry expertise: Fintech, E-commerce, Big data systems design and development, Multicore and distributed systems applications/scientific modeling, Health care;
I can do a lot if I have some level of independence and trust from my colleagues.