Cezary Dubiel
Experienced Backend Developer excelling in Java, Spring, AWS, and scalable systems.
Warsaw, PL
Full time
Hybrid/Remote
Experienced Backend Developer with over 7 years working primarily with Java, Spring, and Hibernate, delivering robust production systems in diverse environments....
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My Career Journey
1/5
CoCoNet Polska
Software Developer
Apr 2025 - Present | 1y 5m
Warsaw, PL
✓ designed and implemented application ordering functionality, incorporating complex availability rules and automatic task creation with assignees resolved from an external service
✓ extended the...
✓ extended the...
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Astek Polska
Software Developer
Mar 2022 - Feb 2025 | 2y 11m
Warsaw, PL
✓ implemented a secure authorization mechanism based on
OAuth 2.0 with access tokens (Spring Security, Spring
Authorization Server)
✓ created a job for reading, processing, and saving data
OAuth 2.0 with access tokens (Spring Security, Spring
Authorization Server)
✓ created a job for reading, processing, and saving data
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Webellian
Software Developer
Dec 2021 - Feb 2022 | 2m
Warsaw, PL
✓ contributed to the development of Java-based web insurance configurator (coverage types, exclusions) using an XML-driven domain model stored in a SQL database and a custom framework for rendering configuration...
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NASK
Software Engineer
Mar 2020 - Nov 2021 | 1y 8m
Warsaw, PL
✓ developed a custom Ansible module for managing tunnel
establishment between machines (Python)
✓ created an application to manage which machines will be
monitored by Nagios (Python, Flask)
establishment between machines (Python)
✓ created an application to manage which machines will be
monitored by Nagios (Python, Flask)
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Atos Poland S.A.
Junior Software Developer
Apr 2018 - Sep 2019 | 1y 5m
Warsaw, PL
✓ created an integration between systems for scheduled ticket data retrieval and storage
✓ enhanced a complex, multi-step ticket sales algorithm to enable ticket bundle sales
✓ implemented a...
✓ enhanced a complex, multi-step ticket sales algorithm to enable ticket bundle sales
✓ implemented a...
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Analytical Thinking
Problem Solving
Calmness Under Pressure
Collaboration
Education
Warsaw University of Technology Faculty of Electronics and Information Technology
Computer Science (Information and Decision Systems)
2019
Warsaw University of Technology Faculty of Automotive and Construction Machinery Engineering
Mechatronics (Construction Machinery Engineering)
2016
Certifications & Qualifications
AWS Certified Developer – Associate
2026
Language(s) I speak
English
Intermediate
Polish
Fluent