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Aleksandr GrekAG

Aleksandr Grek

Software Engineer

€320/day
Vienna, AT
3-7 years
Java
Spring boot
Python
Typescript
Docker

Average response time: 1 hour

About Aleksandr

As a Java Backend and Full-Stack Developer with 6 years of experience, I help companies build scalable backend systems, modernize legacy architectures, and implement complex integrations.


At Porsche Informatik I design and develop high-performance microservices using Java and Spring Boot, lead legacy migrations, and operate applications in a DevOps model with Kubernetes, OpenShift and GitLab CI/CD. Messaging systems like Kafka and RabbitMQ, and databases like PostgreSQL and Redis are part of my daily toolkit.


What sets me apart: I combine deep backend expertise with the active use of AI tools meaning faster delivery, higher code quality, and more value per hour for my clients.
Typical projects: microservices architecture, system migrations, API development, CI/CD setup, cloud deployments, and database optimization.
Automotive OEM
Banking and Financial Services
Insurance
Telecommunications
Public Sector

  • English

    Native or bilingual

  • German

    Fluent

  • Russian

    Fluent

  • Ukrainian

    Conversational

Can work on-site
Vienna (up to 50km)

Experience

  • Porsche Informatik
    Software Engineer
    AUTOMOBILE
    January 2023 - January 2026 (3 years)
    Vienna, Austria
    Designed and implemented high-performance backend services using Spring Boot. Led migrations from legacy applications to modern, scalable architectures. Developed and optimized complex SQL queries for efficient data processing. Improved application performance by applying OOP patterns and best practices.
    Microservices Architecture Kubernetes / OpenShift Java / Spring Boot GitLab CI/CD PostgreSQL
  • GridData
    Software Engineer
    ENERGY AND UTILITIES
    April 2021 - December 2023 (2 years and 8 months)
    Traunstein, BY, Germany
    Developed custom software for Raspberry Pi embedded systems.Developed custom software for Raspberry Pi embedded systems. Built and maintained CI/CD pipelines with GitLab, Jenkins, and Docker. Developed a robust tool to efficiently parse and structure unorganized customer data. Applied and adapted algorithms for topology data processing. Improved application performance by applying OOP design patterns and backend best practices across multiple Java-based projects.
    Java Backend Development CI/CD Pipelines (Jenkins, Docker) Data Migration & Processing Raspberry Pi / Embedded Systems Algorithm Development
  • Fiverr (Online)
    Freelancer
    DIGITAL AND IT
    November 2019 - March 2021 (1 year and 4 months)
    Salzburg, Austria
    Delivered freelance Java development projects via Fiverr, building messenger bots tailored to individual customer needs. Contributed to open source projects and deepened practical knowledge of OOP design patterns. Gained experience in client communication, requirement analysis, and delivering working software solutions independently under real-world conditions.
    Chatbot Development Open Source Contribution OOP Design Patterns

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Education

  • Bachelor of Computer Science
    University of Salzburg
    2023
    Bachelor of Computer Science
  • KanDDDinsky Conference Participation
    2024
    KanDDDinsky Conference Participation
Check out Aleksandr's education

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