Senior Ruby Developer
2019 - 2020Packet- Delivered greenfield application in a tight schedule. It had a minimalistic UI to enter data. In background jobs, it synchronized API data to match with existing data. Multiple reports grouped the data on multiple criteria, including forecasting.
- Maintained and extended existing Billing Rails API. My work included porting the previous app to the API and planning and implementing new features around it.
- Convinced the team to use easier solutions despite hard pushback. This reduced the required work by half and limited possible errors with a cache for communication.
Technologies: SQL, Ruby Performance, Software Architecture, Test-driven Development (TDD), RSpec, REST APIs, PostgreSQL, Back-end, JavaScript, APIs, Employee Training, Public Speaking, Shell, Ruby Gems, Automation, RubyMine, Database Design, Object-oriented Design (OOD), Git, Billing, Ruby on Rails (RoR), RubySenior Ruby Developer
2016 - 2019Toptal- Managed a team of eight people with a 13-hour difference in time-zones; developed an asynchronous process for the team to allow fully asynchronous work.
- Completed over 70 technical interviews, checked architectural skills, and solved complex problems.
- Wrote a library to monitor blocked Java processes—this helped our DevOps team solve problems with Jenkins running over 100 concurrent builds.
- Trained a junior developer to a mid-level, fully functional team member within a senior-only company in just a few months.
- Promoted the use and development of open-source tools, encouraged other developers to make a presence, developed multiple open-source tools that gained quick traction in the community, and gave multiple talks at conferences about the tools.
Technologies: SQL, Ruby Performance, Leadership, Software Architecture, Test-driven Development (TDD), RSpec, GraphQL, REST APIs, PostgreSQL, Back-end, JavaScript, APIs, Employee Training, Conference Speaking, Public Speaking, Ruby Gems, *nux Shells, SUSE, Linux, RubyMine, Unix Shell Scripting, Database Design, Object-oriented Design (OOD), Git, Automation, Java, Shell, Ruby on Rails (RoR), RubySenior Ruby Developer
2016 - 2016Consileon Polska- Wrote Ruby integrations for third-party APIs, including over five integration APIs for different financial systems.
- Supported the team with Ruby on Rails development.
- Implemented some small features with Ruby on Rails.
Technologies: SQL, Ruby Performance, Software Architecture, Test-driven Development (TDD), RSpec, REST APIs, PostgreSQL, Back-end, Object-oriented Design (OOD), JavaScript, Billing, Employee Training, Conference Speaking, Public Speaking, Shell, Ruby Gems, Git, SUSE, Linux, RubyMine, Database Design, APIs, Ruby on Rails (RoR), RubySenior Ruby Developer
2015 - 2016Stack Builders- Co-managed a team of 10+ people, planning features and Ruby and Rails development.
- Built long-term architecture plans for the project.
- Paired with developers to help them improve coding skills (also JavaScript).
- Collaborated with and helped sysadmins automate tasks.
Technologies: SQL, Ruby Performance, Leadership, Software Architecture, Test-driven Development (TDD), RSpec, REST APIs, PostgreSQL, Back-end, Object-oriented Design (OOD), APIs, Billing, Employee Training, Conference Speaking, Public Speaking, Shell, Ruby Gems, Git, SUSE, Linux, Unix Shell Scripting, Database Design, Automation, JavaScript, Ruby on Rails (RoR), RubyRVM Release Manager
2011 - 2013Engine Yard- Served as a RVM (Ruby version manager) and handled releasing new versions, maintenance, and implementing new features.
- Integrated with internal services. Helped plan and implement the integration of RVM with internal Ruby services.
- Solved issues and implemented automation solutions to prevent problems from happening. Discussed user problems in tickets and on StackOverflow.
Technologies: Ruby Performance, Leadership, Software Architecture, Test-driven Development (TDD), RSpec, Back-end, Object-oriented Design (OOD), JavaScript, APIs, Employee Training, Conference Speaking, Public Speaking, Java, *nux Shells, Git, SUSE, Linux, C++, Unix Shell Scripting, Ruby Gems, Ruby on Rails (RoR), Shell, Ruby, AutomationIT Consultant/Team Coordinator
2007 - 2011Consileon Polska- Supported our customers, providing them with the highest level of knowledge from all over the IT range.
- Developed and maintained the deployment process, which included installing dependencies and setting up servers and databases.
- Managed coordination and communication between our customers and our team of Rails developers.
Technologies: SQL, Ruby Performance, Leadership, Software Architecture, Test-driven Development (TDD), RSpec, REST APIs, PostgreSQL, Back-end, JavaScript, Employee Training, Shell, Ruby Gems, *nux Shells, Git, Linux, C++, Unix Shell Scripting, Database Design, Object-oriented Design (OOD), Java, APIs, Ruby on Rails (RoR), Ruby, Automation
Michał Papis
Unix Shell Scripting Developer in Berlin, Germany
Member since January 18, 2021
Michał has many years of experience in a variety of languages, but he has solely focused on Ruby since 2010. Ever since then, he's been polishing his Ruby on Rails skills at companies both large and small, working on open-source projects, and teaching others. He enjoys collaborating and sharing his knowledge to solve complex problems.
Michał is now available for hire
Portfolio
- PacketSQL, Ruby Performance, Software Architecture, Test-driven Development (TDD)...
- ToptalSQL, Ruby Performance, Leadership, Software Architecture...
- Consileon PolskaSQL, Ruby Performance, Software Architecture, Test-driven Development (TDD)...
Experience
- Automation 20 years
- Unix Shell Scripting 18 years
- Database Design 18 years
- Ruby 11 years
- Ruby Gems 11 years
- Git 10 years
- Ruby on Rails (RoR) 10 years
Availability
Part-time
Preferred Environment
Software Architecture, Test-driven Development (TDD), PostgreSQL, Back-end, Automation, *nux Shells, Ruby on Rails (RoR), Git, SUSE, Linux, RubyMine
The most amazing...
...feature in RVM I've developed is autolibs feature. It replaced manual instructions with an automated system, installing necessary components for Ruby.
Employment
Experience
- Ruby Version Managerhttp://rvm.io
RVM helps developers to install Rubies, switch between different versions of Rubies and sets of Gems. I improved the tool, adding automation whenever it was suitable. Adding autolibs or RubyGems-bundler solved many problems and reduced the number of support tickets. Multiple times, I investigated issues on the verge of Shell, compilation, Ruby, Gems, Bundler, and Rails.
- Gem RubyGems-Bundlerhttps://github.com/rvm/rubygems-bundler
A Gem to help developers avoid typing `bundle exec` before each Ruby command. It hooks into both RubyGems and bundler. It helped to reduce number of issues opened for RVM by 10-fold. The project has over 106 million downloads.
- Gem Executable-Hookshttps://github.com/rvm/executable-hooks
Ruby Gem to add support for executing plugins on running ruby executables. It required hooking into RubyGems and extending it in a compatible way with other plugins, and generating executables. The project has over 36 million downloads.
- Gem Pluginatorhttps://github.com/rvm/pluginator
The gem allows an automatic and configurable way of loading plugins into ruby applications. The gem comes with an extendable interface through its own plugin interface. This gem has almost 1 million downloads.
Skills
Languages
Ruby, SQL, C++, Java, JavaScript, GraphQLFrameworks
Ruby on Rails (RoR)Tools
RSpec, RubyMine, Git, *nux Shells, Shell, BundlerParadigms
Automation, Database Design, Object-oriented Design (OOD), Test-driven Development (TDD)Other
Ruby Gems, Back-end, Unix Shell Scripting, Public Speaking, Conference Speaking, Employee Training, APIs, Software Architecture, Leadership, Ruby Performance, BillingLibraries/APIs
REST APIsPlatforms
LinuxStorage
SUSE, PostgreSQL
Education
- Engineer's Degree in Computer Engineering1999 - 2003Technical University of Szczecin - Szczecin, Poland
