Piotr Ciuk
Ekspert Ds. Analiz Ofert at T-Mobile Polska
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolPiotr Ciuk is an experienced IT service architect, bid and contract manager with over 12 years crafting service delivery, go-to-market and procurement strategies across major telco and enterprise accounts. Currently at T-Mobile Polska after a long tenure at Fujitsu, he blends hands-on technical understanding of data-center and ITSM practices with commercial acumen in public procurement and contract negotiation. He pairs an MBA focused on digital transformation and AI with practical exposure to backend engineering—contributing performance-focused type-conversion fixes and tests to the well-known Hazelcast project. Known for translating complex technical requirements into competitive, auditable bids, he brings a rare mix of product, delivery and open-source coding chops. A Warsaw-based leader and dad who still enjoys coding, he focuses on reliable, high-performance service solutions that meet both technical and commercial constraints.
12 years of coding experience
7 years of employment as a software developer
Bachelor, Business Management, Bachelor, Business Management at Wyższa Szkoła Zarządzania w Warszawie - The Polish Open UniversityMaster of Business Administration - MBA, Digital transformation & Artificial Intelligence, Master of Business Administration - MBA, Digital transformation & Artificial Intelligence at Akademia Leona Koźmińskiego (Kozminski University)Bachelor of Arts - BA, Bachelor of Arts - BA at Oxford Brookes UniversityPost-graduate studies, Public Procurement, Post-graduate studies, Public Procurement at SGH Warsaw School of Economics
English
Github Skills (11)
unit-testing10
hazelcast10
javas10
bigdecimal10
java10
biginteger10
data-structure9
stream-processing9
distributed-systems9
data-structures9
caching9
Programming languages (7)
Github contributions (5)
hazelcast/hazelcast
Apr 2016 - Nov 2016
Hazelcast is a unified real-time data platform combining stream processing with a fast data store, allowing customers to act instantly on data-in-motion for real-time insights.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:6 commits, 2 PRs, 10 comments in 6 months
Contributions summary:Piotr primarily focused on improving and optimizing type conversions within the Hazelcast query engine. They reviewed and enhanced converters for `BigDecimal` and `BigInteger`, adding comprehensive test coverage. Further contributions involved optimizing conversions to `java.sql` classes, specifically `Timestamp`, `Date`, and `Time`, by utilizing the `valueOf` methods. These changes indicate an effort to enhance the performance and reliability of data type handling within the Hazelcast platform.
computationstream-processingbigtablereal-timestreaming-data
cpiotr/blog
Feb 2014 - Apr 2017
Contributions:28 commits, 16 pushes, 4 comments in 3 years 2 months
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