Diploma

Oleksandr Davydiuk

Junior Backend Java Developer

Warszawa

Courses

Junior Backend Java Developer Course 13 months (finished in April 2025) Passed
Academics
Studying speed Studied slowly
Study attempts Due to poor performance or cheating, the student has to start the course anew Passed course on 1 try
Hours of studying Spent at least 240 hours
Skills
  • Java 8+(Collections, Multithreading, Streams, Generics, Exceptions, Lambda, Streams API, Optional, Functional Interfaces, HttpClient)
  • Maven
  • Spring Framework: Spring Boot,Spring MVC, Spring Data, Spring Security(OAuth 2.0, JWT, Basic)
  • Hibernate (JPA)
  • SQL (PostgreSQL, H2)
  • NoSQL (MongoDB, Cassandra)
  • ORM
  • FlyWay
  • RESTful API
  • OpenAPI/Swagger
  • WebSockets (STOMP, SockJS)
  • Docker
  • CI/CD (Jenkins, GitHub Actions, GitLab CI)
  • Logging & Monitoring (ELK Stack, Prometheus, Grafana)
  • Message Brokers (RabbitMQ, ActiveMQ)
  • JUnit
  • Integration Tests (Spring Test, Testcontainers)
  • Mockito
  • Load Testing (JMeter, Gatling)
  • Postman
  • CURL
  • Git (GitHub, GitLab)
  • Agile (Scrum, Kanban)
  • Design Patterns
  • SOLID, DRY, KISS, YAGNI
  • AWS (S3, Lambda, EC2, RDS, Elastic BeanStalk)
  • InteliJ IDEA
  • Linux
  • Teamwork using SCRUM
About course
  • Junior Backend Java Developer Course.
  • Online studying
  • Graduation level
    Junior Backend Java Developer
  • Mentor
    Andrii Piskovyi
Stanford CSA106 + CSB106 3 months (finished in February 2024) Passed
Academics
Average code mark 4.92 / 5 Top 30 Average mark higher than 70% of graduates
Average review mark On the course, students learn to conduct a review themselves and receive marks for it 4.79 / 5
Studying speed Studied at a good pace
Study attempts Due to poor performance or cheating, the student has to start the course anew Passed course on 1 try
Hours of studying Spent at least 325 hours
Skills
  • Computer science
  • Java
  • Code review
About course
  • Learning the basics of programming in a Peer-to-Peer format by the education course of Stanford University.
    More about the course program
  • Online studying
  • Graduation level
    Computer Science Basics Alumnus

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