Intro
What I am all about
I am a technically skilled and creative software developer and architect with over 15 years of experience. I was working on diverse international projects with Swiss, German, US and Polish companies.
I'm an entrepreneur, frequent conference attendee and speaker, an open source passionate and former #hackergarten Bern organizer.
Work with me
Let's build great things together
Need a software developer or architect for your project? Get in touch with me.
Spoken languages
100%
Polish
96%
German
94%
English
55%
Spanish
Expertise
100%
Java and JVM ecosystem
100%
OSDM
95%
Software Architecture
98%
API Design
95%
Test Automation
85%
Frontend Development
95%
Agilist
95%
Distributed Tracing
Projects
Projects I was working on that you may know
Experience
Yes. I've been around
2019 – Present
adesso Schweiz AG, Switzerland
Senior Software Developer and Architect
Bern, Switzerland
Working as a freelance contractor for the Swiss Federal Railways (SBB).
Architect and Team Lead of the SBB OSDM Distribution System — designed and led the development of a modern, standards-compliant distribution platform enabling seamless rail offer exchange and sales with partners and third-party vendors across Europe
Core Developer of the Rail Distribution API — played a key role in building and maintaining the API layer that securely exposes SBB's rail services, inventory, and booking capabilities to external partners and vendors
Team Lead and Architect of the SBB Offer Engine / Offer Calculation System — designed and personally implemented the core business logic for dynamic offer calculation, including advanced filtering, fare comparison, ranking algorithms, yield management rules, and optimization to ensure the best, most relevant, and competitive offers are presented to end customers.
2013 – 2019
Centeractive AG, Switzerland
Senior Software Developer
Bern, Switzerland
Working as a freelance contractor for the Swiss Federal Railways (SBB).
- Microservices design and migration to the Cloud Platform - Performance optimization - Core developer of the 'Offers' system
Jan 2013 – Nov 2013
Centeractive AG, Switzerland
Senior Software Consultant
Bern, Switzerland
Working as a freelance contractor for the swiss insurance company The Mobiliar.
Responsible for developing systems for migration of large amount of data from legacy infrastructure to new data warehouse. - developing Java Batch Framework based on Spring Batch (Java, Spring Batch, Oracle, DB2) - developing Master / Slave framework for parallel processing of data (Spring Integration, JMS, ActiveMQ) - developing ui, web based monitoring system for the master / slave framework (JBoss, PrimeFaces)
Feb 2012 – Jan 2013
Centeractive ag
Senior Software Developer
Bern, Switzerland
Full-time job as a Senior Java Developer. Designed and developed multiple core features of Retrospective Log Analyzer (UI and backend)
2008 – 2012
Sabre Holdings
Software Developer / Analyst
Krakow, Poland
System owner / Technical leader of web GUI application based on GWT framework and web services. Main duties: - analyzing, coding and testing - planning, managing and organizing work related to the project - single point of contact for external customers and vendors - responsibility for 24/7 system uptime
2005 – 2006
University of Dortmund
Software Developer / Research assistant
Dortmund, Germany
- Developing Java based tools (JAVA, XML) - Maintaining and developing department's website (PHP, MySql, HTML, JS, XML) - Developing drivers for hardware used / created by scientists of the department (C, LabView) - Assembling books in LaTeX technology
Conferences
Speaker experience
"Ineffective Java"
"Bringing distributed tracing to the next level"
"Bringing distributed tracing to the next level"
"Bringing distributed tracing to the next level"
"Distributed Business Tracing with OpenTracing and Trasier"
"The way to distributed tracing"
"The way to distributed tracing"
"Babun, the windows shell you will love"
Education
Lazy isn't in my vocabulary
2007 – 2008
Heriot Watt University
Master of Science (MSc), IT-Software Systems
Edinburgh, Scotland
Postgraduate master study. Master thesis: "Misleading software plagiarism tools."
2002 – 2007
University of Applied Sciences
Dipl. Inf. (FH), IT
Dortmund, Germany
Thesis: Development of java tool for visualisation and calculation of applied mathematics functions.
Certifications and Licenses
Oracle certified java programmer (OCJP) for Java 6
Oracle License Issued Nov 2010 (No Expiration Date) Credential Identifier: SR7067924
Certificate in Advanced English (CAE)
Issued by University of Cambridge
Lifeguard (DLRG) Germany
Passed the highest Lifeguard certification in Germany (Gold)
Lifeguard (WOPR) Poland
Passed the Junior Lifeguard certification in Poland
Testimonials
What others say about me
Jakub Balamut, Senior Software Architect at Sabre Holdings
"Lukasz is a very talented and motivated developer with customer-focused attitude. He's a quick learner, has impressive technical knowledge and is a very friendly person, which will be a good fit in any team."
Joern Koch, Senior Software Architect at C1 WPS
"Die Zusammenarbeit mit Lukasz Pielak war fachlich und menschlich sehr erfreulich. Insbesondere sein Engagement und das hohe Verantwortungsgefühl sowohl fürs Ganze als auch für die Details seiner Arbeit haben ihn zusammen mit seiner hohen fachlichen Kompetenz zu einem sehr verlässlichen Teamkollegen gemacht, der in allen Fällen wesentlich zum Gelingen des Projekts beigetragen hat. Ich hoffe, dass sich auch in Zukunft die Gelegenheit zur Zusammenarbeit ergibt."
