Bartosz M.
Poznan, Poland
100%
Job Success
Top Rated Plus
Senior Java Developer | Spring Boot | REST API | Web | AWS | Fullstack
$60.00/hr
Experienced backend Java developer with over a decade of expertise in developing and maintaining high-quality software solutions. My career includes roles at Accenture, Credit Suisse and GFT Group. Based in Poland, I have also worked in London with Luxoft and Unibet, a leading company in the gambling industry. Top-rated Upwork freelancer, ranked in the top 5% of performers with a 100% Job Success Score. Proficient in Java, Spring Boot, REST APIs, and cloud technologies (AWS). Adept at working with distributed international teams, emphasizing clean code practices and delivering challenging projects.
Programming Languages: Java, JavaScript, Scala
APIs & Integrations: RESTful APIs, GraphQL, WebSocket, RabbitMQ, JMS, Kafka
Cloud & DevOps: AWS (Cloudformation), Docker, CI/CD (Jenkins, GitHub Actions)
Frameworks & Tools: Spring Framework, Spring Boot, Hibernate, JPA
Version Control: Git, GitLab, Bitbucket
Databases: MySQL, PostgreSQL, MongoDB, Redis
Testing: JUnit, Mockito, Cucumber, TDD
Others: Observability, Keycloak, Angular, Maven, Bash
Work history
Work history
Spring Boot/Java AWS based back-end system
May 22, 2023
-
Sep 25, 2023
5.00
"We were very happy with the work delivered by Bartosz. He is a very skilled developer, constructive, easy to communicate with, excellent English, reliable and also a nice person! I…
Private earnings
1x Senior Java Developer with Spring Boot
Aug 15, 2022
-
May 5, 2023
5.00
"Exceptional Java Developer. Really led the project for us from Java perspective. Full team looked to Bartosz's technical expertise for guidance. Always on time and delivered first class work. Would…
Private earnings
Senior Java developer for a long term project
Jul 13, 2021
-
Dec 23, 2022
5.00
"Bartosz did an amazing work for us. We would rehire him right away."
Private earnings
Creating a JAVA desktop application from that links CSV file database
Aug 6, 2021
-
Jan 12, 2022
5.00
Private earnings
(~1 hour) Solve a Java recruitment task and give us feedback!
Jun 30, 2021
-
Jul 1, 2021
5.00
Private earnings
Make this github sample work
Jun 29, 2021
-
Jun 30, 2021
5.00
Private earnings
Java EE to Spring Boot - Experienced Consultant needed to create a migration concept
Sep 24, 2023
-
Present
Job in progress
Private earnings
Bartosz M. has more jobs. Create an account to review them
Skills
Skills
- Spring Framework
- MySQL
- Java
- AngularJS
- Web Application
- Docker
- SQL
- RESTful API
- Spring Boot
- API
- Hibernate
- Java Persistence API
- Spring MVC
- CI/CD