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Artem R.
Last update: 26 Jul 2019
ARCHITECT /team lead
Data Science/ML/Java/Scala Engineer
● 8+ years work experience in IT
● Experience in developing applications using Java, Scala, JavaScript, Erlang and Python.
● Experience as app architect.
● Experience as TL.
● Experience in block-chain development, ML and ComputerVision
● Great experience with AWS and Big Data (Hadoop/Spark/Hive)
● Responsible, hard-working, result
All rates are indicative, annual rate includes 20% discount
20% discount on yearly basis
GMT+2 East Europe
Kharkov, Ukraine

EXPERIENCE

Industry Experience

Data Science & Machine Learning, Big Data, Healthcare & Medicine, Internet of Things, Advertising & Marketing

Product Experience

CRM system, E-Commarce solution, A complex Data Science project

PORTFOLIO HIGHLIGHTS

Under NDA

Data Science Engineer

Developing process of price analysis and financial calculation on Spark GraphX; Building data pipelines - from ingesting raw data from Kafka to analytics with Spark streaming; Refactoring code during migration from Spark 1.6 to Spark 2.0; Performance tuning of AWS Redshift; Improving already implemented features with Akka based web crawler

Software for searching the best prices on the market (company name cannot be disclosed due to NDA). Effective analysis of growing dataset prices on goods significantly increased customer's revenue. Prices and dependency on them we represented as a graph of dependencies - for this purpose was used Spark GraphX, most of the problems were solved by leveraging Pregel algorithm.

Technologies Stack:

AWS Scala Spark Akka Apache Kafka Apache Spark

Industry:

Data Science & Machine Learning, Big Data

Under NDA

Data Science Engineer

Developing algorithm of prediction user's action based on Random Forest algorithm from Spark ML and tuning parameters of model; joint development of recommendation system based on collaborative filtering with data science team; preparing raw datasets with Spark SQL for further data mining - shaping data from AWS S3 and Cassandra with joins; preparing web reports and csv for administration of system with using Play Framework

Project for data mining of user's action on e-commerce site and correlation it to behavior of platform with aim to predict of user's action - like "how users with specific metadata buy products" or "how new design influence on revenue - (with A/B testing)"

Technologies Stack:

AWS Cassandra Play Python Scala Spark Apache Spark scikit-learn Hadoop

Industry:

Data Science & Machine Learning, Big Data

Under NDA

Data Science Engineer

Preparing API for other dev-teams for data visualization from HDFS with Tableau; development REST API for risk management system like fraud detection and credit risk; deploying into production monitoring system - ELK, Grafana, Graphite; deep collaboration with devops team - configuration dev and prod servers with Ansible, Saltstack and AWS EMR

Analyzing near real-time events in online banking like transactions, loans, deposits, a currency exchange with further visualization with Tableau.

Technologies Stack:

AWS Java Oracle Play Scala Tableau Apache Spark Elasticsearch Pig Docker Hadoop

Industry:

Data Science & Machine Learning

Under NDA

Big Data Engineer

Developing API for MatLab/Keras pipeline with NiFi for further reporting and storing historical data on S3

Image recognition of labels of cigarettes in backwalls with further data mining of customer's purchases.

Technologies Stack:

Apache MATLAB

Industry:

Big Data

Under NDA

Architect

Initial design SOA architecture for the project, implementing business logic for calculation engine from scratch, performance tuning on DB layer and on side of REST API, providing and customization approaches for web development for business needs like custom Scala DSL for HATEOAS API

Financial calculation software for American clinics, the main idea of the project was providing the ability for tracking, reporting money flow and transfer money according to customer's business logic within different cost centers in hospitals.

Technologies Stack:

PostgreSQL Scala Apache Kafka Play Framework Docker

Industry:

Healthcare & Medicine

Under NDA

Tech Lead

Developing custom monitoring system with alerts; Making API for fast collecting urgent metadata to Elasticsearch; Improving security analysis system

System for monitoring and provisioning for private cloud - emergency alerts, metrics monitoring, tracking of container orchestration and automatically searching security vulnerability

Technologies Stack:

AWS Java OpenStack Play PostgreSQL Python Scala Elasticsearch Ansible Docker

Under NDA

Senior Back End Developer

Developing data pipelines: IoT device → CoAp -> Kafka -> Akka Streams -> Analytic service; Developing batch layer - writing old data from sensors to HDFS in Parquet format developing REST API for dashboards

Platform for collaboration IoT devices for smart home

Technologies Stack:

AWS PostgreSQL Python Scala Akka Apache Kafka Hadoop

Industry:

Internet of Things

Software for management the chain of restaurants

Senior Software Developer

Code development; Estimation, prioritization of tasks; Unit testing; Documentation maintenance (specification to software)

Software for maintaining a chain of restaurants. Management of basic processes in restaurant business like according/staff management.

Technologies Stack:

Java Java EE JavaScript JSP MySQL Spring SQL JDBC JUnit Log4j Web Services Maven

Product:

CRM system

E-commerce Software

Senior Software Engineer

Code development; Estimation, prioritization of tasks; Unit and Integration testing; Documentation maintenance (specification to Java code)

Software for online shop platform with independent sellers and direct customer. The business model is very similar to AliExpress platform.

Technologies Stack:

Hibernate Java Java EE JSP SQL JDBC JUnit Log4j Oracle database Web Services

Product:

E-Commarce solution

Team collaboration software

Senior Software Engineer

Code development; Estimation, prioritization of tasks; Unit and Integration testing; Documentation maintenance; Mentoring of junior developers; Interviewing

Software for collaboration of employees and sharing knowledge with an ability to take an instance of the app and deploy on own hosting. The business model is very similar to Confluence and KB combination.

Technologies Stack:

PostgreSQL Scala Akka Play Framework

RTB platform

Senior Data Science Engineer

Code development ● Estimation, prioritization of tasks ● Unit and Integration testing ● Support deployment processes ● Infrastructure support

RTB platform for ads analytics, providing marketing campaigns based on AI solutions with prediction of metrics like CTR, PPC etc., and pixels- impressions- based- analysis.

Technologies Stack:

Python Scala Apache Kafka Apache Spark Hadoop

Industry:

Advertising & Marketing

Product:

A complex Data Science project

EDUCATION

Kharkiv National University of Radioelectronics

Masters degree in computer aided systems

CHI Development Center. agency #433

400+
Kharkov, Ukraine
GMT+2

Industries

Architecture & Design, Education & Science, Business & Productivity, Logistics & Transportation, E-Commerce & Retail, Banking & Finance, Information services & Technologies, Entertainment & Games, Construction & Real estate, Human Resources & Career, Mapping & Navigation, Sports & Fitness, Advertising & Marketing, Law & Government, Shopping & Loyalty programs, News & Media, Statistics & Atalytics, Kids & Childcare, Healthcare & Medicine, Safety & Security, Booking & Rent, Beauty & Personal Care, Service & Support, Films & TV, Insurance & Risk Management, Cybersecurity & Data Protection, Data Science & Machine Learning, Big Data, Automotive

CHI Software is the development center, based in Kharkiv, with representatives in Dnipro and Kiev (Ukraine), Israel and California. We’ve started off as a small web design studio. Nowadays, we have complex in-house expertise in different business domains and industries to offer. Our development team includes the following departments: web design, JavaScript, .Net, PHP, Ruby, Python, Java, C++, Mobile (Android and iOS), DevOps and QA. For a proper support, we have also trained a team of BI, BA and Project Managers who can join the project at any stage. We constantly keep up with the current technology trends: AI, Machine Learning, Computer Vision, AR/VR, continuous delivery, Blockchain, and cloud solutions integration, of course.

MORE TALENT AVAILABLE AT THIS AGENCY

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