Krzysztof Lubomański

Father, developer and music enthusiast. Worked wirh Ruby since 2012. Mainly develops web apps with Ruby on Rails. Tries to learn something new every time he has a chance. Loves self hosted software, so he build a home server to host dockerized instances of Owncloud, Wallabag or Hashicorp»s Vault. Has experience working with various third party apps: Amazon AWS/SQS/SES, Heroku, Mailgun, Twilio, Smsapi and more! His next goal is to develop a OpenSaaS application with a couple of friends.

Work Experience (7)

https://leadfeeder.com

Creating and maintaining Ruby based applications.

  • Transform business requirements into concise technical specifications


  • Take part in the hiring process (screening & technical calls)


  • Plan & coordinate work inside the team


  • Help maintain good wellbeing of my teammates


  • Designed and implemented changes to support multiple products being sold

  • Designed changes needed to support multiple accounts with one subscription

  • Designed & implemented an in-house lightweight accountancy system

  • Extended internal microservice communication with gRPC

  • Proposed & monitored implementation of a message broker

https://leadfeeder.com

Creating and maintaining Ruby based applications.

  • Created an add-ons system that allowed our sales team to upsell features


  • Introduced major internal changes without affecting the in-house API


  • Migrated billing to comply with PSD2 & SCA


  • Extended the list of technologies used to AWS Lambda and utilized the dynamic features that it offers in calculating the correct price per client


  • Developed internal recurring system


  • Created an in-depth, time-lined, post mortem after finding and fixing a production issue


  • Work closely with internal stakeholders to dynamically adjust goals and priorities to reflect the current business goal


  • Subject matter expert on billing/affiliates

http://appwebhouse.com

Responsible for creating RoR based apps, designing functionalities and technical aspects of projects.

  • Created a guide centric Uber like clone - GoForGuide

  • Managed a team of 5 developers

https//getresponse.com

Development and maintenance of Ruby based applications (RoR, Sinatra). Mainly working with billing/accountancy apps.

  • Worked on creating the new version of the affiliate app

  • Maintained a legacy billing monolith continously expanding it's features

  • Helped plan out the new version of billing

  • Close contact with accountancy

https://getresponse.com

Development and maintenance of Ruby based applications (RoR, Sinatra). Mainly working with billing/accountancy apps.

http://www.voicetelecom.pl/

Linux based systems administration, back-end and front-end development in Ruby on Rails

  • Created a MySQL Galera cluster for the VOIP operator

  • Took part in creating the user interfaces for the VOIP operator

  • Introduced an achievement based gamification system for call center application

https://rabbid.pl

Customer contact, website administration, maintaining accounts on social media

Publications

Switch context faster with git worktree in https://dev.to/lubekpl/switch-context-faster-with-git-worktree-3jil
25 Oct 2019

Introductin to git worktree

How to quickly search all your repos at once in https://dev.to/lubekpl/how-to-quickly-search-all-your-repos-at-once-2j6g
6 Mar 2019

Introduction to Hound

General ideas/guidelines for fresh developers in https://dev.to/lubekpl/general-ideasguidelines-for-fresh-developers-1ej3
5 Jun 2018

General gotchas that new devs should be aware of

Languages

Polish

Native speaker

English

C1

Interests

IT

  • Ruby
  • Web development
  • Backend development

(e)Sports

  • Boxing/Kickboxing
  • Starcraft 2
  • Basketball