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Mikhail Klimenko
Software Engineer
Enthusiastic software developer with Engineers Degree in the computer systems software and 16 years of hands-on experience in developing comprehensive software projects including 3 years of a Ruby backend development. A detail-oriented team player with a passion to keep things in order. I adore getting over the problems, finishing something you've been working on really-really hard. Feeling part and being heavily involved into project is essential to me.
Main Skills
Ruby on Rails
RSpec
ERB / Slim
HTML / CSS
REST API
Linux
PostgreSQL
RabbitMQ
Redis
Elasticsearch
Clickhouse
Sidekiq/Resque
Nginx
Git
CI / CD
TeamCity
Gitlab
Docker
Kubernetes
Education
Engineer's Degree at specialty "The software of computer aids and the automated systems"
Moscow Engineering Physics Institute, Russia
Experience
2016-10 – present
Ruby on Rails Developer
Onlinetours.ru
The company provides tours searching services and resells tours from many providers leveraging in-house high-performance search engine solutions to regular customers, independent agents, and professional agencies.
  • Maintained legacy-rich Ruby on Rails monolith application with 80k+ LoC in a multi-tier software environment as a part of an agile fully-remote software team
  • Daily use of Ruby on Rails, Roda, PostgreSQL, Elasticsearch, Redis, Clickhouse, RabbitMQ, Sidekiq, Docker, Kubernetes, Git
  • Supported rich REST APIs for the internal and external user
  • Ensured high code quality with RSpec tests, TDD and automatic documentation generation
  • Constantly worked on overall project's reliability, performance, speed, and resources consumption reduction with extensive use of tools like Kibana, NewRelic, Honeybadger, Sentry, Prometheus
  • Planned, designed and implemented new features and services for clients and partners in close cooperation with stakeholders
  • Helped other team members by mentoring junior developers, sharing knowledge and reviewing pull requests
  • Created open source QiwiPay payment service bindings for Ruby (qiwi-pay gem) and some more open source gems
2016
Freelance programmer (part-time, remote)
  • Helped customer to plan and implemented new features of commercial real estate sale and rent bulletin board application
  • Design and implement commercial vehicles lease and sale bulletin board application
  • Use of Ruby on Rails, PostgreSQL, Elasticsearch, JavaScript, jQuery, Bootstrap
2015
Contractor programmer (part-time, remote)
Vesnik Information Systems Ltd, Nicosia, Cyprus
  • Implement dynamic interface generation for ERP system
  • Use of Delphi, DevExpress VCL, PostgreSQL
2004-10 – 2016-10
Instrumentation Systems Engineer
Federal State Unitary Enterprise “MAYAK” Production Association
The Federal State Unitary Enterprise manages a wide variety of chemical and nuclear production chains.
  • Enhanced water pump station instrumentation system with interactive display and report abilities (Windows, MasterSCADA, Linux, HTML, JavaScript, jQuery)
  • Simplified company's computer equipment accounting processes by developing specialized software (Windows, Delphi, SQL Server)
  • Renovated nuclear facility's distributed instrumentation and alarm system's hardware and software (Linux, C++, Qt, Python, LINTER DBMS)
2003-08 – 2004-09
System administrator
South Ural State University (Ozersk division)
  • Local area network and computer hardware maintenance
  • Windows domain administration
  • Linux-based internet access server administration
2002-09 – 2003-05
System administrator and web developer
Astra LLC
  • Maintained high availability rates of dial-up services
  • Web development (HTML, CSS, Perl, PHP)
Code samples and OSS contributions