Speaking

  • rg-dev, RRUG

    Let's Debug Like Scientists

    I share a set of tools to build a collaborative process of debugging. I show how centuries-old scientific practices can be adopted in our young profession. All this supported with real-world stories that prove those methods to be effective.
  • RailsConf 2021, RubyDay.it 2021, EMEA on Rails 2021, RubyConf.br 2021, BuildStuff Lithuania 2022

    API Optimisation Tale: Monitor, Fix and Deploy (on Friday)

    Lessons learned during extraction of a complex service from 1M+ LOC monolith. During this project, we migrated an internal API from REST to GraphQL optimising it heavily. I talk about old patterns in a new setting, incremental changes and broken production.
  • RRUG

    Database Internals (series of talks)

    I've given a series of in-depth talks about database internals at Rzeszów Ruby User Group meetups:
    • Why Doesn't the Database Use My Index? - how the indexes are built, and how to use them efficiently
    • SELECT or There and Back Again - query processing details, from parsing down to storage and back to the client
    • Full-text Search Inside Out - inverted index explained with simple implementation in Ruby as an illustration
  • 4Developers 2018, SegFault 2018, SPA Software in Practice London 2018, Hack Yeah 2018

    Writing Slow Regexp is Easier than You Think and Want it to Be

    Talks and workshops about the performance of regular expressions. I show the internals of a regex engine and this lets me explain how various types of patterns are processed. Finally, I give real-word examples of regular expressions that harmed production applications.
  • 4Developers 2019, Rzemiosło.IT 2019

    Who is a Senior Developer

    I interviewed several engineers and managers to understand how they perceive seniority in our industry. I summarised the findings in a short talk. As a follow-up, I also moderated a discussion panel about being a senior developer. We discussed traits of a senior developer, career progression and title inflation.
  • wroc_love.rb 2017, 4Developers 2017

    We All Build Distributed Systems

    After working with a system built with only 3 apps - web UI, Android client and API backend I realised that a lot of the problems inherent to distributed systems happen also in this simple setting. In this talk, I describe how we dealt with offline mode, data synchronisation and error resolution