Krzysztof Jakubcewicz
AI-driven backend specialist building scalable, reliable systems in Java and Spring Boot.
Łódź, PL
Full time
Remote
Software Engineer with over 5 years of experience, specializing in designing and developing scalable backend systems, microservices, and REST APIs primarily...
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My Career Journey
1/3
Sii sp. z o.o.
Software Developer
Jan 2021 - Present | 5y 7m
Lodz, PL
Developed and maintained backend services for a merchant platform integrating with a payment processing system. Contributed to a brownfield migration to AWS. Implemented OpenSearch features for request...
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Idemia R&D Poland
QA Engineer
Jan 2019 - Jan 2021 | 2y
Developed and maintained automated tests for backend services and APIs. Validated system stability and reliability in test environments.
Accenture
Test Engineering Analyst
Jan 2018 - Jan 2019 | 1y
Developed and maintained automated tests for in-house web applications.
Self-Motivation
Independent Thinking
Collaboration
Teamwork
Active Listening
Analytical Thinking
Open Mindset
Most proud of (2/3)
1st
Moved completion logic from OpenSearch into Java, reducing strain on OpenSearch and improving search reliability
2nd
Developed backend services for a merchant payment platform, implemented OpenSearch for logs and helped with a brownfield AWS migration
Career Highlights
1/1
Software Developer at Sii sp. z o.o., 2021–present
Drove backend development and brownfield AWS migration for payment platform
Łódź, PL,
In my role as Software Developer at Sii (2021–present) I developed and maintained backend services...
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My values
Independence
Open-Mindedness
Problem Solving
Adaptability
Growth Mindset
Education
Społeczna Akademia Nauk
Computer Science
2020
Language(s) I speak
Polish
Fluent
English
Fluent
German
Intermediate
Russian
Beginner