Hryhoriy

RESUME:> Hryhoriy KRAVTSOV, PhD
An expert in various areas of the IT industry (cryptography, data
science, development, software architecture) with extensive
experience in different positions (Cryptographer, Software developer,
Development Team Lead, Data Science Lead Engineer, Chief
Technology Officer, Chief Research and Development Officer, Software
and Solution Architect), results-oriented, adheres to the scientific
method, sociable, polite and proactive. Certified
AI-Empowered
SAFe® Agilist

PhD in the field of mathematical
modelling and numerical
methods (2014 year)

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Email: [відкрити контакти](див. вище в блоці «контактна інформація») Cell: [відкрити контакти](див. вище в блоці «контактна інформація») Location: Kalush, Ukraine

Hard Skills

Brokers - RabbitMQ, ActiveMQ, Kafka
Dependency injection - Spring, Scaldi, Guice
Unit testing - JUnit, TestNG, ScalaTest
Bigdata and ML - Spark, Breeze
Cloud - AWS, Heroku.

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Working experience: Solution Architect, NovaDigital
Years 2024-2026

Industry Logistic

Project Nova Digital is the primary developer of web applications and software for the entire Nova Group. It creates,
maintains, and continuously improves the software products that are essential for the group's core businesses,
such as Nova Post (logistics) and NovaPay (financial services). The company is known for its expertise in building
and managing high-load architectures. Its solutions are designed to handle immense volumes of traffic and data,
processing up to 30,000 transactions per second.

Technology PHP, Go(lang), Python, Java, JavaScript (Vue.js), MongoDB, PostgreSQL, ElasticSearch, Kibana, Graphana,
stack Victoria Metics, Apache Doris, Apache SeaTunnel, Google Cloud Platform

Duties Architectural Strategy & Governance: Define system architectures and maintain oversight through rigorous
governance and mentoring.
Operational Excellence: Modernized internal workflows by implementing Service Catalog frameworks and RFC
(Request for Comments) practices.
AI Strategy Consulting: Provide expert guidance on the integration and scaling of Artificial Intelligence solutions.

Achievements Change Management: Introduced Service Catalogs and standardized Change Request cultures.
System Design: Engineered 12+ high-impact systems for logistics and secure document exchange.
Lakehouse Initiation: Led the implementation of Likehouse built on Apache Doris and SeaTunnel.
AI Integration: Managed pilot programs for AI coding assistants to improve delivery efficiency.
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Working experience: Software Architect, Playtech
Years 2020-2024

Industry Gambling

Project Playtech Open Platform serves as an integration hub that enables well defined integration between 3rd Party
Gaming Systems (RGS) and Playtech Gaming Platform as well as 3rd party wallets. It provides a single game
aggregation for all 3rd party content and enables seamless distribution of content across Playtech licensees. It
allows 3rd Party and PT RGSs to integrate with a variety of iGP through standard Third Party Interface ( TPI )
hiding complexity of custom protocols. It also replaces the old legacy system and together with marketplace
providing end-user game discovery and configuration.

Technology Scala, Akka framework, MongoDB, CRDT, ElasticSearch, Kibana, YourKit
stack

Duties Design of software architecture, architectural supervision, ISO 27001 Audit, managing of Scala team

Achievements The proposed architecture of RGS adapters as independent microservices allowed to reduce integration costs by
at least 32%.
The support cost (from dev perspective) of the cluster solution was reduced by 17%.
System availability was increased on 0,4% up to 99,97%
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Working experience: DS Consultant, Uklon
Years 2020-2021

Industry Car sharing

Project Developing and tuning of surge forecasting model (weighted composition of random forest, neural networks and
multiple linear regression)

Technology Scala, Spark
stack

Duties Model design and supporting the ML team in implementation on Python.

Achievements The proposed model made it possible to increase the company's revenue by 2.1% due to a more efficient
calculation of ride prices during rush hours and weekends.

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Working experience: co-founder and CTO, naomi
Years 2018-2020

Industry Work force management

Project Artificial intelligence on the service of reskilling.

Technology Scala, MongoDB, ElasticSearch, Redis, Heroku
stack

Duties Technology Strategy and Innovation
Team Leadership and Management
Technical Architecture and Infrastructure
Product Development
Research and Development (R&D)
Cybersecurity and Risk Management
Budgeting and Resource Allocation

Achievements Project launch from scratch for 6 months

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Working experience: DS Lead Engineer, Fareportal
Years 2017-2018

Industry Traveling

Project Effective price prediction - combining a simple moving average model, an autoregressive integrated moving
average (ARIMA) model, and a seasonal decomposition of time series (STL) model to generate forecasts.

Technology Scala, Spark, Databricks
stack

Duties Managing of data scientists and data engineers team,

Achievements Implemented model made it possible to increase the company's revenue by 0.2% due to a more efficient
calculation of ticket price.

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The latest certificates and diplomas

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Reference Letters

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Personality type

The test result: https://www.16personalities.com/profiles/b1ed71ebeb309
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Thinking Mathematically

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