Jakub Kalinowski

JK

Looking for a job

Jakub Kalinowski

@jakubkalinowski

Backend Software Engineer at VivaScope who developed backend systems for a medical imaging viewer.

At VivaScope, I developed backend systems for a web and desktop medical imaging viewer, including containerized microservices and scalable REST APIs.

I optimized SQL schemas and Hibernate data access, and enhanced system reliability, error handling, and runtime stability.

I wrote unit and integration tests with JUnit, used GitLab CI pipelines, and worked with Git workflows. I also handled log analysis, debugging, refactoring, and code reviews.

At Amazon Filters, I tested new functionality in systems managing production processes and operating warehouse systems. Earlier, I founded and managed the water sports club business Kitexplorer.

Experience

Work history, roles, and key accomplishments

AF

Current

System Support & Testing

Current

Amazon Filters

Oct 2020 - Present (6 years)

Tested new functionalities of the system managing production processes and operated warehouse systems.

Testing warehousing systems

VI

Backend Software Engineer

VivaScope

Sep 2023 - Feb 2026 (2 years 5 months)

Developed backend systems for web and desktop medical imaging viewer. Designed and implemented scalable REST APIs, optimized SQL schemas, and enhanced system reliability.

Java Kotlin Spring Boot Docker REST APIs SQL Hibernate Junit Gitlab CI Git

SN

Operations Support

Secura Nova

Sep 2020 - Dec 2022 (2 years 3 months)

Supported internal systems and managed company website.

System Support Website Management

KI

Founder & Business Manager

Kitexplorer

Jan 2013 - Dec 2020 (7 years 11 months)

Founded and managed a water sports club business.

Business Management entrepreneurship

Education

Degrees, certifications, and relevant coursework

WT

Warsaw School of Information Technology

Master of Science, Management and Telecomputing

2005 - 2011

Master of Science with major in Management and Telecomputing in the Faculty of Computer Techniques for Management.

WT

Warsaw University of Technology

Computer Science

2002 - 2005

Studied Computer Science in the Faculty of Mathematics and Information Science, with studies conducted in English.

SW

Secondary School in Warsaw

Secondary School Diploma, Mathematics

1998 - 2002

Completed the Math profile at the Secondary School in Warsaw.

Tech stack

Software and tools used professionally

OpenAPI

Kubernetes

GitLab CI

MySQL

MongoDB

Spring Boot

Spring Framework

IntelliJ IDEA

Gradle

JavaScript

Java

Kotlin

JSON

Hibernate

JUnit

Git

Docker

SQL

Availability

Looking for a job

Location

Poland

Authorized to work in

Salary expectations

24k+ EUR

Job categories

Backend Engineer System Support Specialist Software Tester Business Manager

Skills

Backend Development Kotlin Java Spring Framework Spring Boot REST APIs Microservices Clean Architecture SQL Hibernate R2DBC MySQL Docker Junit Integration Testing

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