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Location

Poland

Rate

$50  / per hour

Years of experience

11+

About

With over 11 years of professional experience, I am a Senior FullStack Java Developer with a robust technical skill set that includes expertise in Java (8/11/17), Angular (5/7/11/14), Kotlin, JavaScript/NodeJS, Docker, Kubernetes, Apache Kafka, and various databases (SQL, NoSQL). I have demonstrated my capabilities in high-impact roles at notable organizations such as Bisnode (D&B), Santander, Lingaro, and others, where I have been pivotal in developing and implementing complex solutions using microservices architecture, Spring Boot, AWS, Azure, and more. My experience spans across diverse projects involving data extraction, business logic application, insurance sales, big data automation, financial reporting, and user authentication, showcasing my ability to handle intricate requirements and deliver robust solutions. In addition to my extensive work experience, I have also contributed to the field as a trainer and developer at the Software Development Academy, where I have been instrumental in mentoring aspiring junior Java developers. I hold a Master of Engineering in Computer Science from Warsaw University of Technology, graduating with distinction, and possess a Java SE 11 Programmer I certification. My educational background, combined with my practical experience and teaching roles, underscores my comprehensive understanding of software development principles and my commitment to fostering the next generation of developers.

Tech Stack

Java, Angular, Docker, Java 11, JavaScript, Kotlin, Kubernetes, MongoDB, MySQL, Node.js, Oracle, Spring Framework

Experience

  • Proficient in Java, Angular, and microservices architecture.
  • Skilled in SQL and NoSQL databases, with expertise in Spring, Spring Boot, and Elasticsearch.
  • Utilized microservices technology, including Angular 7, Java 11, Spring 5, SOAP, and REST.
  • Developed solutions for diverse projects, including automating processing of big data grids and generating financial reports.
  • Worked with Azure, AWS, and Docker for deployment and management.
  • Collaborated with cross-functional teams to ensure project success and deliver high-quality solutions.

Employment history

Senior FullStack Java/Angular Developer, Bisnode (D&B) January 2020 – Currently

• Preparing architectural solutions for projects involving microservices technology.
• Preparing and maintaining documentation for implemented solutions.
• Directly working with product owners to understand and propose business solutions.
• Implementing solutions using Angular 11, JavaScript, Java 11, Kotlin, Spring Boot, AWS, Spring 5, REST, SQL, Kafka, and NodeJS.
• Writing and maintaining automation tests using JUNIT, Cucumber, and Spock.
• Extracting and transforming data from various sources (XML, JSON, text) and presenting results on web pages or exporting to PDF/Excel.

Senior FullStack Java/Angular Developer, Santander October 2019 – January 2020

• Preparing architectural solutions for banking projects involving microservices technology.
• Preparing and maintaining project documentation.
• Collaborating with product owners and other squads working on the same product to ensure cohesive solutions.
• Implementing solutions using Angular 7, JavaScript, RxJS, NgRX, Java 11, Spring 5, SOAP, REST, SQL, and OpenShift.
• Writing automation tests using JUNIT 4.
• Developing and maintaining insurance selling packages and additional features.

FullStack Java/Angular Developer, Lingaro August 2017 – October 2019

• Developing and automating processing of big data grids, presenting and editing them on websites, and handling data imports/exports using Java 8, Angular 5, Spring 5, Azure, JPQL, OData, Hibernate, and SQL Server.
• Rewriting Oracle queries to SQL Server queries and removing cartesian products resulting from joins in queries.
• Preparing financial reports for project managers using Java 11, Angular 7, Spring 5, AWS, Docker, Hibernate, and SQL Server.
• Creating and maintaining CRUD operations, user registration, and authorization/authentication systems.

Trainer & Developer, Software Development Academy January 2017 - Currently

• Teaching students to become Junior Java Developers, focusing on practical knowledge (80%) and theory (20%).
• Leading and assisting with student projects using Java 11, Spring Boot, Data, Web, MySQL, Hibernate, JPA, HTML, JavaScript, CSS, and Angular.
• Designing projects to help students gain practical experience and improve their job prospects.
• Implementing algorithms and solving problems using Java, including pathfinding with BFS and managing hotel reservations with comprehensive frontend and backend development.

FullStack Java Developer, Rutkowski Sp. z.o.o May 2015 – October 2016

• Developing new features and maintaining existing code for solutions using microservices technology: Java 8, AngularJS, Spring, and JUnit.
• Conducting code reviews and ensuring code quality.
• Preparing and maintaining documentation for implemented solutions.
• Collaborating with a small team consisting of an architect, QA, fullstack developers, frontend developer, and backend developer.

Developer, Freelancer April 2013 – January 2015

• Working on a variety of projects using PHP, C++, JavaScript, and Java.
• Developing plugins and custom game modes for the Minecraft game using Java 7.
• Designing and developing a website for Minecraft servers, including user registration, login, product purchase, and integration with Minecraft servers for immediate product delivery.
• Conducting code reviews and maintaining code quality for various projects.

Education history

Warsaw University of Technology 2015 - 2022 Master of Engineering Warsaw University of Technology
Faculty of Electronics and Information Technology, Informatics
Graduated with distinction

Bachelor of Engineering Warsaw University of Technology
Faculty of Electronics and Information Technology, Informatics
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