Jakub Kalinowski-Zajdak
Senior Java Engineer at The Heart R&D Lab- Claim this Profile
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Bio
Jesua Betancor Alemán
I worked with Jakub in the same company, we were Software Developers. Jakub was hired because of his deep knowledge in Java, even when the position was for a Scala Developer. He was able to adapt himself from one language to another in no time, giving to the team a great value to our source code. As a serius and a profesional worker, he helped the team to reach the company objectives. He's a great asset to get in any team!
Krzysztof Atłasik
Jakub is extremely creative, knowledgeable, hardworking, intelligent and helpful. Anyone who works with him can attest to his efficient and effective communication, creative thinking, professional business acumen and ethical conduct. He was real MVP in our backend team. His Java and Scala knowledge was terrific. Jakub would be a invaluable asset to any company. Highly recommended!
Jesua Betancor Alemán
I worked with Jakub in the same company, we were Software Developers. Jakub was hired because of his deep knowledge in Java, even when the position was for a Scala Developer. He was able to adapt himself from one language to another in no time, giving to the team a great value to our source code. As a serius and a profesional worker, he helped the team to reach the company objectives. He's a great asset to get in any team!
Krzysztof Atłasik
Jakub is extremely creative, knowledgeable, hardworking, intelligent and helpful. Anyone who works with him can attest to his efficient and effective communication, creative thinking, professional business acumen and ethical conduct. He was real MVP in our backend team. His Java and Scala knowledge was terrific. Jakub would be a invaluable asset to any company. Highly recommended!
Jesua Betancor Alemán
I worked with Jakub in the same company, we were Software Developers. Jakub was hired because of his deep knowledge in Java, even when the position was for a Scala Developer. He was able to adapt himself from one language to another in no time, giving to the team a great value to our source code. As a serius and a profesional worker, he helped the team to reach the company objectives. He's a great asset to get in any team!
Krzysztof Atłasik
Jakub is extremely creative, knowledgeable, hardworking, intelligent and helpful. Anyone who works with him can attest to his efficient and effective communication, creative thinking, professional business acumen and ethical conduct. He was real MVP in our backend team. His Java and Scala knowledge was terrific. Jakub would be a invaluable asset to any company. Highly recommended!
Jesua Betancor Alemán
I worked with Jakub in the same company, we were Software Developers. Jakub was hired because of his deep knowledge in Java, even when the position was for a Scala Developer. He was able to adapt himself from one language to another in no time, giving to the team a great value to our source code. As a serius and a profesional worker, he helped the team to reach the company objectives. He's a great asset to get in any team!
Krzysztof Atłasik
Jakub is extremely creative, knowledgeable, hardworking, intelligent and helpful. Anyone who works with him can attest to his efficient and effective communication, creative thinking, professional business acumen and ethical conduct. He was real MVP in our backend team. His Java and Scala knowledge was terrific. Jakub would be a invaluable asset to any company. Highly recommended!
Credentials
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Oracle Certified Professional, Java SE 6 Programmer
OracleFeb, 2013- Sep, 2024
Experience
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The Heart R&D Lab
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Poland
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Information Technology & Services
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1 - 100 Employee
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Senior Java Engineer
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Jan 2023 - Present
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Summer Agency
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Poland
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Appliances, Electrical, and Electronics Manufacturing
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1 - 100 Employee
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Senior Java Engineer
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Mar 2019 - Dec 2022
* Designing and developing backend side from KYC, health industry and IoT * Implementation of REST and SOAP API * Implementation of asynchronous messaging service * Working for projects: Kyc prodcut, Higo Sense, Port * Designing and developing backend side from KYC, health industry and IoT * Implementation of REST and SOAP API * Implementation of asynchronous messaging service * Working for projects: Kyc prodcut, Higo Sense, Port
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MeStudent.com
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Australia
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Software Development
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1 - 100 Employee
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Senior Java Engineer / Scala Developer
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Feb 2018 - Feb 2019
• Developing education and social media portal MeStudent.com • Designing RESTful API and new components • Bugs fixing • Tuning of performance • Cooperating with distributed team • Working remotely • Working under code review • Scala, Java 8, Play, Akka Actors, GraphQL, Slick, Git, MySql, AWS • Developing education and social media portal MeStudent.com • Designing RESTful API and new components • Bugs fixing • Tuning of performance • Cooperating with distributed team • Working remotely • Working under code review • Scala, Java 8, Play, Akka Actors, GraphQL, Slick, Git, MySql, AWS
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Comarch
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Poland
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Software Development
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700 & Above Employee
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Team Leader
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Jun 2016 - Jan 2018
• Designing RESTful API and components of Comarch OSS Suite Platform• Leading a team of programmers• Cooperating with analysts, product owners and UX designers• Preparing technical documentations and tasks for team• Mentoring of trainees during the summer internship program
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Programmer
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Jun 2010 - May 2016
• Developing new functionalities and microservices• Bugs fixing • Tuning of performance and memory consumption• Working under code review • Java 5-8, Swing, JAX-RS, CDI, JPA/Hibernate, JUnit, RestAssured, Jmeter, WildFly, Jackrabbit, Elastic Search, SVN
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Softhis
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Poland
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Software Development
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1 - 100 Employee
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Programmer
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Nov 2009 - May 2010
• Developing components of web application for libraries • Java 6, GXT, SVN • Developing components of web application for libraries • Java 6, GXT, SVN
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Education
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2004 - 2009
AGH University of Science and Technology
Master's degree of Applied Computer Science
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