Andrii Kostenko
Software Developer
Andrii is an accomplished software engineer experienced in creating large-scale, complex applications. He has worked both as a back-end and front-end engineer. He excels at planning and implementing intricate solutions to technical problems, including determining which technologies should be used.
Availability
Preferred Environment
Vim Text Editor, MacOS, Git, PyCharm
The most amazing...
...thing I've coded is an online commenting engine that handles millions of visitors per day.
Work Experience
Software Engineer
HealthJoy
- Gained knowledge of the American health insurance system.
- Contributed to the composition of up to 70% of the project's test coverage.
- Tried several XMPP solutions and created a high-load solution with ejabberd.
- Wrote a Cron-like daemon for RQ.
- Collaborated with team members in an Agile/Scrum environment, which increased productivity.
- Improved ability to communicate with clients in English.
- Created docker-based development environment, which allows new and current developers quickly setup required project infrastructure.
Entepreneur
Visamap
- Created a custom world map using MapServer.
- Created a number of fetchers from different sources.
CTO
Skiliks
- Converted a prototype with write-only code to a production-ready project, including working architecture and unit-tests (PHPUnit and Buster.JS)
- Switched development to a Scrum-like process.
- Founded a team of qualified software/QA engineers in Kyiv, Ukraine.
- Replaced buggy code (built over two month of development) with a remote API of existing services.
- Refactored and rewrote numerous project parts.
- Covered code with JS/PHPUnit tests (over 180 tests created).
- Administrated development/production servers.
Software Engineer
Mybook
- Chose the programming language and technology package for the company (Python/Django 1.4/Celery).
- Created a CI environment with 1100 passing tests (tests were mostly for used applications)
- Used a variety of public modules instead of writing redundant code, patching them if needed.
- Created a large project with an efficient, clean code structure.
- Created numerous bugreports in Django bugtracker with patches.
- Developed a public API with Django Tastypie.
- Improved Django Coffin so that it worked as a transparent template loader.
Software Engineer
Kinohod
- Refactored a complex body of code, making it more supportable.
- Created a cell phone website version of the code using jQuery Mobile.
Software Engineer
Rambler-Afisha Internet Holding
- Developed highly-scalable internet applications
- Optimized a database for high load processing.
- Refactored a service handling over 10 million requests per day.
- Improved the libpurple library to support a large number of accounts.
- Improved the speed and code quality of existing code.
Software Engineer
Privatbank
- Created a peer-to-peer money transfer application.
- Developed a service to take 25 web site screenshots per second.
- Created a sandbox for using compilers with online IDEs.
- Used a partial MySQL master-master replication to create two interfaces: one was public with public data and one was private in a bank network with private data.
- Created a complex administrator panel for payment transaction monitoring.
Experience
Visamap
MyBook Online Library
http://mybook.ru/Walk2web
Credit Card Number Generator
Skiliks
Skills
Languages
Perl, Python, SQL, JavaScript, PL/pgSQL, Lua, C#, CSS3, HTML5, PHP, C++, C
Frameworks
Django, Flask, Catalyst, Jinja, GeoDjango, AngularJS, Yii
Storage
PostgreSQL, MySQL, Memcached, Redis, Amazon S3 (AWS S3), Amazon DynamoDB, PostGIS, Kyoto Tycoon
Libraries/APIs
SQLAlchemy, Python-rq, jQuery Mobile, RQ, React, Node.js, DBIx::Class, jQuery, Backbone.js
Tools
Vim Text Editor, NGINX, Git, PyCharm, Ansible, Sequelize, Chef, Celery, Amazon Elastic Container Service (Amazon ECS), Zsh
Paradigms
Test Automation, Scrum, Agile Software Development, Test-driven Development (TDD)
Platforms
Docker, Linux, FreeBSD, Amazon EC2, MacOS
Other
XMPP, OAuth
Education
Partially Completed Degree in Appiled Mathematics
Dnipropetrovsk National University - Dnipropetrovsk, Ukraine
Graduate Degree in Software Engineering
IT Academy "Step" - Dnipropetrovsk