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Evgeniy Zakharchenko

Passionate Senior Software Engineer with 10 years of hands-on experience in full-stack web development from the data storage design though Java middleware to the SPA JavaScript/Flex on the client-side. Versatile, reliable and efficient professional with management experience. Successful in developing complex web platforms in AdTech and eCommerce domains. Took part in all aspects of product development, made thousands of decisions, led ~50 people. 

Following is very important for me: to make decisions, to be part of the team, to be respected by colleagues, to create something that matters.

[email protected]
+38 (096) 455-9510
Kyiv, Ukraine

Skills


Tech Skills

  • Languages: Java8, JavaScript (ES6), TypeScript 2.x, Python 2
  • Server-side technologies: Spring (Boot, IoC, MVC, Data, Cloud, Integration, Batch, Security), JPA/Hibernate, myBatis
  • Client-side technologies: React/Redux, Angular, BackboneJS, HTML5, Webpack, HighchartsJS, Adobe Flex 4
  • Storage: MySQL, PostgreSQL, Redis, ElasticSearch
  • Cloud: AWS (EC2, S3, RDS, ElatiCache, SQS, SNS, API Gateway) 
  • Architecture design: layered systems, self-contained systems, microservices, SPAs


Management Skills

  • Hiring and building a team
  • Leading an engineering team 10-20 people
  • Coordination/overseeing the architecture
  • Conducting SCRUM Activities
  • Mentoring team members
  • Estimation, planning and delivery management

Experience

Full-Stack Lead Engineer, Sep 2017 — Present, Kyiv

Project 

Personnel Management Platform for a leading provider of substitute staffing services, filling more than 6,500 daily and long-term vacancies each day for over 250 clients in a variety of states throughout the U.S. Web-based desktop and mobile apps (React Native).
Responsibilities
  • Hiring, building and leading a team of 8 engineers
  • Delivery management: estimation, planning, implementation, deployment, operation, monitoring
  • Architecture design for server-side and client-side
  • Code review and mentoring
Key Accomplishments
  • Helped to hire a team of ~4 engineers
  • Bootstrapped a React-base client-side app (architecture, infrastructure)
  • Designed initial AWS architecture
  • Established CI and Deployment process
  • Established Design/Development/Review processes
TechStack
Server-side: Java8, Maven, GIT, Spring Boot|Cloud|Security|OAuth2, MapStruct
AWS EC2|RDS|S3|Route 53, MySQL 5.7
Client-side: SPA, ES6, React, Redux, Redux-saga, Redux-form, React Router 4, Webpack

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Full-Stack Technical Lead, Mar 2015 — Aug 2017, Kyiv

Project 

AdTech: A specialized digital marketing services platform that helps clients to reach and manage the most profitable audiences by efficiently buying and targeting digital advertising, including online display, online video, and now television.
Responsibilities
  • Hiring, building and leading a team of 15 engineers
  • Overseeing entire program (~40 engineers)
  • Communication and coordination of distributed teams
  • Delivery management: estimation, planning, implementation, deployment, operation, monitoring
  • Architecture design for server-side and client-side
  • Code review and mentoring
Key Accomplishments
  • Helped to hire a team of ~40 engineers
  • Designed an architecture for the platform of 10 apps using self-contained apps pattern
  • Developed a strategy for migration of legacy AngularJS 1.5 code base to Angular 4
  • Established CI and Deployment process
  • Established Design/Development/Review processes
TechStack
Server-side: Java8, Maven, GIT, Spring Boot|Cloud|Integration|Security|OAuth2,
AWS EC2|RDS|S3|SQS|Redshift|ElastiCache|API Gateway|Lambda|Route 53, MySQL 5.6
Client-side: SPA, TypeScript 2.3, Webpack, AngularJS 1.5 in migration to 2.0

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Full-Stack Technical Lead, May 2013 — Mar 2015, Kyiv

Project
AdTech: A platform for In-App advertising (messenger app) with over 60 million people audience. Highload project — 20K RPS on the AdServer.
Responsibilities
  • Leading a team of 4 engineers
  • Business requirements analysis and estimation
  • Direct communication with product owners
  • Conducting SCRUM activities
  • Architecture design
  • Deciding on modern technologies for the client side
  • UI prototyping
  • Code review, code quality control, and unit testing
Key Accomplishments
  • Built a new product on top of the inherited system (4 years old system)
  • Modernized the inherited system
  • Migrated UI from rendering on server using Struts2 to SPA with BackboneJS and REST API
  • Designed a scalable AdServer handling 20K RPS (https://dou.ua/lenta/articles/11k-req-s/ in Russian)
  • Designed a data processing pipeline (100Gb/day)
TechStack
Server-side: Java8, Struts2, Freemarker, Spring IoC|MVC|Data|Security, JPA/Hibernate, Tomcat, REST, Solr, MySQL, Maven
Data processing: Cascading on AWS EMR, HDFS, MySQL as a warehouse
Client-side: JavaScript ES5, BackboneJS, Bootstrap 2, RequireJS, Grunt, NodeJs, ExpressJS

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Senior Java/Front-end Engineer,  Aug 2012 — May 2013, Kyiv

Project

AdTech: A buy side platform for the mobile advertisement and marketing
Responsibilities
  • Business requirements analysis
  • Architecture design for both server and client sides
  • Deciding on modern technologies for the client side
  • UI prototyping
  • Code review, code quality control, and unit testing
Key Accomplishments
  • Designed all components of the system from scratch
  • Implemented foundation for the in-house REST framework
  • Implemented foundation for the client side SPA
TechStack
Server-side: Java 7, Spring MVC|JPA Data|Security, JPA/Hibernate, Tomcat, REST, Solr, MySQL, Maven
Client-side: JavaScript ES3, BackboneJS with MarionetteJS, GruntJS

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Java/Flex Engineer, Apr 2011 — Aug 2012, Kyiv

Project

AdTech:  An AdNetwork platform connecting advertisers with publishers. AdServer load ~ 12K RPS.
Responsibilities
  • Business requirements analysis
  • Architecture design of client-side
  • Development of new features
  • Customer support (investigation of production issues);
Key Accomplishments
  • Migrated client side from Flex 3 to Flex 4
  • Improved performance of the client side by 2x
  • Introduced end-to-end testing with FlexMonkey
TechStack
Server-side: Java 6, JBOSS, Spring, JPA, Hibernate, Hadoop, Voldemort, BlazeDS, EJB, PostgreSQL, Maven
Client-side: Flex 3, later Flex 4

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Flex/PHP Engineer, Jul 2008 — Apr 2011, Dnipro

Project

PHP based eCommerce engine which powers 60% of the market in Ukraine.
Responsibilities
  • Development of administrative UI
  • Development of new business modules on the server side
  • Implementation of custom components
Key Accomplishments
  • Designed and implemented flexible data-driven UI using Flex 3
  • Established end-to-end testing process using Selenium
  • Initiated migration process from SVN to GIT
TechStack
Server-side: PHP 5, in-house eCommerce framework OWOX Engine, MySQL
Client-side: Flex 3, Mate Framework

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Education


MS in Electronics Engineering

2010, Dnipropetrovsk National University, Dnipropetrovsk, Ukraine


BS in Banking

2010, Dnipropetrovsk National University, Dnipropetrovsk, Ukraine

Additional

Upper-intermediate level of English, Fluent Russian and Ukrainian.