Marcin

An experienced trainer who thought on many international companies including IBM, Allegro, Pega, HPE. The author of the books Effective Kotlin and Android Development with Kotlin.

Author of the Effective Kotlin and Kotlin Coroutines, speaker, experienced developer. 

Rafał

Looking for trusted and experienced programming trainer? Sure I am good candidate for you. My name is Rafał Grzesik, I’m a experienced software engineer, programming trainer and mentor.

In my career:
* Increased hundreds programmers skill and knowledge by providing robust on site and online trainings.
* Conducted many workshops all rated above 4/5 points in after surveys.
* Expanded the audience's knowledge about DDD, clean architecture and strategic patterns in C#.
* Shared the best practices for working with Angular.
* Showed on concrete examples how to practice your sense of clean code
* Mentored clients to quickly learn new technologies, gain trust and stand out in the workplace.
* Refactored many lines of code and taught others how to do it to meet today's standards.
* Advised how to reduce application risk by introducing security by design principles. 
* Helped people to understand Docker and build CI/CD pipelines. 
My greatest power is listening. I will listen to your needs to prepare the best workshop possible. 

Hi there My name is Rafał, I have five years of corporate career as FullStack software developer .Net and Angular. I'm very ambitious person that’s why in three years I was able to jump up four times from intern to a "senior" position. 

I feel I have reasonable knowledge about what I'm doing. I have delivered many complicated (not to say hard) tasks during my career. I have completed many training, read many books watched hours of videos. Having this experience and knowledge i have decided to start teaching others. 

Teaching force me to dig even deeper into the field and stay up to date. I have started with internal trainings on site and online, all went very well and was scored above 4 on 5. 

Now I'm going further and make the workshops commercially. I'm looking to gain recognition in the community, money plays only second role. I can make training in Polish and English. My main points of interest are Angular, .NET CORE C#, Clean Code and soft topics like productivity.


Experienced trainer, menthor and a fullStack software developer on .Net and Angular.

Wlodek

Experienced developer, trainer and a speaker on international conferences. Specialised in handling and refactoring legacy code. Authority in clean code, refactoring to patterns and best practices.

Software craftsman, specialized in clean code, refactoring to patterns and best practices. 

Mesut

Mesut has BSc and MSc degrees from Bogazici University Electrical & Electronics Engineering. He worked in the Defense Industry for 7 years and managed the testing activities in a multinational project. He has a proficiency in CMMI and PMP experience under his belt.

After that, he worked for Siemens A.G in the system testing team for 4 years. He had the technical lead position in the Istanbul QA office where he managed 18 people and represented the site in the global organization. He took the responsibility for V&V activities for a cloud-based open IoT platform containing lots of microservices and acted as a Product Owner.

Currently, he has been working for Rapyuta Robotics, Tokyo. In the robotics domain, his expertise is focused on test automation. He is acting as the QA Chapter Leader for the organization.

His certificates are: PMP, PSPO, PSM, ISTQB CTAL TM and he is a frequent international speaker with a wide range of various talks: https://www.mesutdurukal.com/conferences.html

Product Owner & E2E Test Automation Leader for the QA team, with over 7 years of experience in professional testing automation.

Piotr

Aspiring software craftsman since 1995. Former programmer at European Organization for Nuclear Research (CERN). Warsaw University of Technology (EiTI) graduate. Successful startup founder. Over my career I managed teams of up to 30+ programmers - while remaining fully hands on. In the recent years I focus on programming Bitcoin and privacy.

1) Running weekly trainings for my team of 15-30+ programmers as a CTO, from ~2015 to ~2018, at Kontomatik.

2) Numerous conference talks from FinDEVr (San Francisco) to Sibos (Geneva) to Polish conferences (WDI etc).

3) Presentations at Bitcoin Protocol Meetup (which I founded) and Warsaw Bitcoin Meetup (independent).

4) Former member of Toastmasters (organization of public speakers).


Michał

Digital solutions, mobile, R&D leader, product owner, board member and tech/business conference speaker. Advised and helped such companies as Amway, InterCars, morele.net, Dietly, and Leifheit in their digital and mobile transformation. Always fascinated with web+mobile and new technologies (such as PWA, AMP, TWA, Voice UI) combined with great User Experience.

I've advised and helped such companies as an expert: Amway, InterCars, Benefit Systems, TVN, Baltona, Browar Tenczynek, MediaExpert, morele.net, Dietly, and Leifheit. I've conducted professional trainings in cooperation with Google Poland, warsawJS, Facebook and dev.js communitites. More on: https://www.linkedin.com/in/michalszklarski/

Digital solutions, mobile, R&D leader, product owner, board member, and tech/business conference speaker.

Mateusz

Mateusz has extensive experience in a variety of areas: 
- Research: graduate of Warsaw University of Technology EiTI and MiNI. Author of publications in ICAISC journal, and research papers on neural networks.
- Conferences: As a speaker, he presented at many conferences related to AI&Data in Poland and abroad
- Freelancing: consulted AI projects with national and international clients.
- Business: I have experience working as a data scientist and data analyst in the financial, and cryptocurrency industries.

As a freelancing data science consultant, I've helped with almost 100 medium/small projects related to
- Neural Networks Applications in Audio Generation,
- Time Series Forecasting & Stock Price Prediction,
- Computer Vision & Image Processing,
- Web Scrapping & Exploratory Data Analysis
- Medical Data Classification,
- Air Quality Prediction,
- Analysis of Measurements from deep-sea vessels,
- Materials Engineering Data Augmentation
- and many others

Data Scientist, Freelancer & AI conference speaker with 5 years of teaching experience. Working in the financial industry using Machine Learning to solve business problems.

Bartłomiej

Bartek is an experienced backend/data engineer, one of the founding fathers of the Allegro experimentation and optimization platform. Currently he is leading the Allegro MLOps transformation. Along the way he has taught people A/B testing and data engineering.

Team leader developing Allegro data & AI technical platform.

Aleksander

Aleksander is experienced software engineer interested in software craftsmanship and testing. 
At Allegro he leads team and trains developers in Kotlin.

Jako trener od ok. 3 lat prowadzę szkolenia wewnętrzne w Allegro "Język programowania Kotlin", które są wstępem do Kotlina dla programistów Java. Prowadziłem też warsztaty zewnętrzne z Kotlina oraz prezentacje na JUG'ach. Od 2.5 roku jestem tech liderem w Allegro, gdzie tworzę produkty w architekturze mikrousługowej. Od 7 lat programuje w różnych językach na JVM (Kotlin, Java, Groovy, Scala). Mam doświadczenie w pracy z różnymi silnikami NoSQL (MongoDB, ElasticSearch, Couchbase) oraz SQL (MySQL, Postgres). 

Experienced software engineer, Kotlin trainer and team leader at Allegro. 

This is a 2-day workshop for experienced developers, that covers asynchronous programming in Kotlin using coroutines. It covers both build-in support for coroutines and dives deep into kotlinx.coroutines library.

Kotlin Coroutines

Workshop covering asynchronous programming in Kotlin using coroutines.

Handling complex objects in relational databases is tough. During this workshop you will learn how to use Entity Framework Core to store complicated models without polluting your domain model.

Entity Framework Core

A workshop showing how to save complex objects to a relational database with EF Core.

Masterclass

A 3-day course that covers the whole material needed for efficient and idiomatic Kotlin development in Android. It starts with basics and dives deep down into advanced Kotlin features and best practices.

Kotlin for Android Developers

Kotlin workshop that covers the whole material needed for efficient and idiomatic Kotlin development in Android.

A 3-day training concentrated on Kotlin JVM. Suitable both for writing pure Kotlin applications, as well as for using Kotlin in backend frameworks like Spring or Ktor. The workshop covers Kotlin exercises, best practices for backend, and core Kotlin features.

Kotlin for developers

Kotlin workshop that covers the whole material needed for efficient and idiomatic Kotlin development.

During this workshop, you’ll understand how TypeScript mechanics work. You will also learn basic and complex data structures, as well as ways to make typing applications written in JavaScript easier. Thanks to this course, your code will not only be more readable but also less prone to errors.

TypeScript

Workshop that covers TypeScript topics and explains the mechanics of its operation, from scratch to advanced structures.

During this 2 or 3-day workshop for experienced Kotlin developers, we'll dive deeply into Kotlin's best practices and idiomatic Kotlin use. We'll also talk about more general concepts like readability, abstraction design or contract setting. 

The workshop is based on the Effective Kotlin book. The content is well thought out and consulted with many Kotlin developers.

Effective Kotlin

Kotlin workshop directed to experienced Kotlin developers, focused on the best practices.

BEST PRACTICES

The workshop concentrated on delivering as much of what is important in Angular as possible in a single day. 

Angular Essentials

The most important parts of Angular in one day

Enhance your Legacy Code towards Clean Code every day. Feel the thrill of continuous code clean-up and make it a daily habit of your team to maintain code quality.
The programming language used in this training is Java.

Refactoring to Clean Code

Enhance your Legacy Code towards Clean Code every day.

Effective Refactoring

How to use machine learning to improve test automation, including core concepts and algorithms.

Machine Learning Adaptation in Software Testing

How to use machine learning to improve test automation. 

The essential workshop teaching how to start and set up successful test automation. 

Test Automation (API and UI)

This workshop teaches how to test backend applications using modern testing frameworks like Kotest and MockK (alternatively, JUnit and Mockito). It shows how to use Kotlin functionalities to improve readability and design our code for proper testing.

Testing in Kotlin

How to use Kotlin to write effective tests, using modern practices and technologies.

A 3-day workshop covering the whole material needed to create mobile and web applications for Android using Android Studio, at an intermediate level. You will learn how to use SQLite to communicate with SQL data sources, how to test your application and publish it to the Google Play Store.

Android application development

A workshop for intermediate object-oriented language programmers, that covers the material needed for creating applications on the Android operating system.

Learn how to write the best tests, according to standards aligned with ISTQB.

Software Testing aligned with ISTQB

Make code architecture more extendable, readable, and testable by applying design patterns.
The programming language used in this training is Java.

Refactoring to Patterns

Make code architecture more extendable, readable, and testable by applying design patterns.

Hands-On Workshop

An angular workshop tailored fit for a group. The whole material takes 3 days but can be split into 1-day or 2-day workshops depending on the group's need. 

Angular

Practical Angular, from basics to advanced usage

MockK is a powerful library. It uses the best of Kotlin to let us define mocks and verification blocks clearly and expressively. It also allows us mock elements typical to Kotlin, like top-level functions and properties, object declarations, or suspending functions. In this workshop, you will learn how to use these capabilities, to use MockK effectively and to improve testing quality in real-life projects.

MockK

 A/B testing is the only tool that allows you to test business hypotheses in a relatively fast, cheap and reliable way. Our training is based on the experience gained in creating an A/B testing platform for Allegro (the 10th largest e-commerce platform in the world). It teaches professional A/B testing, regardless of the technical platform used.
 
 Examples of using A/B tests:
 * safe implementation of new profitable functionalities,
 * avoiding implementations that bring losses or no benefits,
 * evaluation of profits and losses from the implementation of these functionalities,
 * testing business hypotheses.

A/B testing

Make effective A/B testing to verify business hypothesis for your company.

Effective testing and verification of business hypotheses

This hands-on workshop teaches how to retain clean code by refactoring in the smallest possible steps so it becomes everyday practice. It will enable you to continue with much more complex refactorings towards design patterns where applicable.

This way you learn to tackle emergent design from a long term point of view. You will possess skills to make architectures more extendable and readable by applying patterns when you need them without prior over-engineering.

Attendees will gain:
* technical skills based on self live coding;
* awareness of their attitude that is always reflected in outcome code quality.

Attendees will understand:
* how the organization of work within the team/company influences final code quality;
* how patterns solve the problems at the current state of design but without continuous refactoring introduces next issues if the design is followed with copy-paste thoughts only.

Attendees will experience:
* how design patterns might enable but also impede further development for new business cases;
* a threshold of complexity behind which usage of design patterns pays off;
* by trying out ideas to experiment with adjustments to the way their development process is organized so they can improve the quality of the final product.


## More about training

Refactoring is very well known in theory. It looks like everyone has heard about it. But do we know how to approach it? Isn’t it often a theory followed by an idea to re-write a given part of code because we are afraid to touch the given code any longer?
During the workshop, we go carefully through the concept of the Pyramid of Refactoring that enables you to keep your code clean through continuous refactoring and turn the code architecture into design patterns when it brings benefits.

* Simplifying the logic of algorithms
* Extracting smaller methods
* Extracting smaller classes
* Notifying emerging design patterns
* Cleaning up the architecture

The training is mainly focused on working with code using automated refactoring features that are built into IntelliJ. The source code is based on the Java language. The trainer does all the refactorings live in small steps which allows the attendees to follow it with the same
changes on their laptops. The remaining 25% of the training is dedicated to the motivation part, how to make refactoring a daily habit in order to keep technical debt under control.

Please note also that this is a training mainly about refactoring – not necessary about which the design is the best. Different teams might prefer different architectures whereas the goal of this training is to show how easy/fast we can change the low-level design and keep the design emergent according to our architectural decisions and needs. Fortunately, the need to use some patterns is not visible at the beginning of development. This way we can avoid over-engineering and make use of patterns only when they decrease code complexity.
We do our best to keep the code simple but when the codebase is growing we begin to regret a given design pattern is missing as part of the solution.
... and this is the time to apply the refactoring to patterns, for example, to replace conditional statements with polymorphism. This way we tackle code complexity with Strategy, State, Abstract Factory or any other pattern. This approach allows us to avoid over-engineering from the beginning and refactor our codebase just in time when it brings value, decreases complexity, and saves time and money.


Effective Refactoring to Clean Code & Patterns

Learn to tackle technical debt on a daily basis. Feel the thrill of refactoring and make it a habit to maintain code readability and extendibility continuously.

Hands On Workshop

A workshop dedicated to the functional programming features in Kotlin, perfect for developers with some experience in the language, to leverage their skills and learn how to use higher-order functions and collection processing effectively. 

Functional Kotlin

Leverage your skills and improve your productivity with functional programming features in Kotlin.

The workshop "Machine Learning in Python" is intended both for people who want to start their adventure with Machine Learning and those who want to organize their knowledge and focus their further development in this area.

You will get familiar with basic concepts related to data processing, model selection, model training, and validation. For this purpose, we will use the Python programming language. The lecture will consist of a practical part, where we will discuss the code fragments implementing the techniques. The entry threshold to Machine Learning, contrary to appearances, is not so high, but for many people, the knowledge available on the Internet is not presented in a clear way. During this course, systematized knowledge and the possibility of explaining any ambiguities on the fly will be the key to break down these barriers.

Machine Learning in Python

Learn what Machine Learning is, and how to use it in practice.

In this 3-days workshop you will learn how to build stable and scalable .NET 5 MVC applications. The workshop covers basic and advanced .NET 5 MVC features, best practices and real-world examples.

.NET Deep Dive

A workshop that covers the material needed to build scalable applications .NET MVC.

Build scalable applications .NET MVC

The one-day course focused on practical skills that experienced Kotlin developers often lack. 

Advanced Kotlin

To help Kotlin developers become great developers by leveraging advanced features of the language.

We teach programming

with focus on the best practices

What training do you need?

Kotlin

Best practices

Android

Frontend

Testing

Data Science

Invest in your skills!

Why choose us?

Team of mentors & trainers

Marcin Moskała

Author of the Effective Kotlin and Kotlin Coroutines, speaker, experienced developer.

Rafał Grzesik

Experienced trainer, menthor and a fullStack software developer on .Net and Angular.

Wlodek Krakowski

Software craftsman, specialized in clean code, refactoring to patterns and best practices.

Mesut Durukal

Product Owner & E2E Test Automation Leader for the QA team, with over 7 years of experience in professional testing automation.

Piotr Włodarek

Aspiring software craftsman since 1995.

Michał Szklarski

Digital solutions, mobile, R&D leader, product owner, board member, and tech/business conference speaker.

Mateusz Dorobek

Data Scientist, Freelancer & AI conference speaker with 5 years of teaching experience. Working in the financial industry using Machine Learning to solve business problems.

Bartłomiej Bęczkowski

Team leader developing Allegro data & AI technical platform.

Aleksander Ihnatowicz

Experienced software engineer, Kotlin trainer and team leader at Allegro.

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