05/14/2026 updated
100 % available
Senior Java / Spring Backend Developer
BA, Slovakia
Worldwide
Master's Degree (Ing.) - Material Science of Technology, Information ,University of Trnava, SlovakiaAbout me
Senior Backend Developer with over 10 years of professional experience in Java and Spring based enterprise systems. Proven expertise in designing scalable backend architectures, automating CI/CD pipelines, and delivering high-quality solutions in agile, international environments.
Spring BootBackendAWS ECSJenkins
Java & Spring Framework
Over 10 years of professional experience in developing and maintaining enterprise backend services using Java (versions 11-25) and the Spring 6.x ecosystem, including designing scalable backend architectures.
CI/CD & DevOps
Proven expertise in automating CI/CD pipelines using Jenkins, as well as supporting AWS cloud infrastructure on a basic DevOps level, including containerization with Docker.
Database Management
Extensive hands-on experience with relational databases including Oracle, PostgreSQL, and MySQL, covering schema design, optimization, data migration, and SQL query development.
Frontend Development
Hands-on experience with Angular for building insurance calculators and web applications, complemented by knowledge of HTML, CSS, and JavaScript.
Agile & Scrum Methodologies
Collaboration with cross-functional teams including product owners, analysts, and QA teams in agile Scrum environments, using tools such as Jira and Confluence.
Tools & Environments
Proficiency with a wide range of development tools and environments including Git, Maven, Sonar, Dynatrace, JBoss, Tomcat, and operating systems such as Windows, Mac, and Linux.
ERP Systems & Business Analysis
Experience developing and maintaining a corporate ERP system using Gupta Centura IDE, performing business analysis, system performance tuning, and providing long-term system support.
Microservices Architecture
Transformation of business logic from legacy systems into microservices, resulting in improved backend response times and reduced operational costs.
Over 10 years of professional experience in developing and maintaining enterprise backend services using Java (versions 11-25) and the Spring 6.x ecosystem, including designing scalable backend architectures.
CI/CD & DevOps
Proven expertise in automating CI/CD pipelines using Jenkins, as well as supporting AWS cloud infrastructure on a basic DevOps level, including containerization with Docker.
Database Management
Extensive hands-on experience with relational databases including Oracle, PostgreSQL, and MySQL, covering schema design, optimization, data migration, and SQL query development.
Frontend Development
Hands-on experience with Angular for building insurance calculators and web applications, complemented by knowledge of HTML, CSS, and JavaScript.
Agile & Scrum Methodologies
Collaboration with cross-functional teams including product owners, analysts, and QA teams in agile Scrum environments, using tools such as Jira and Confluence.
Tools & Environments
Proficiency with a wide range of development tools and environments including Git, Maven, Sonar, Dynatrace, JBoss, Tomcat, and operating systems such as Windows, Mac, and Linux.
ERP Systems & Business Analysis
Experience developing and maintaining a corporate ERP system using Gupta Centura IDE, performing business analysis, system performance tuning, and providing long-term system support.
Microservices Architecture
Transformation of business logic from legacy systems into microservices, resulting in improved backend response times and reduced operational costs.
Experience
Professional experience10+ years
Freelancer since2026
Languages
GermanBasic knowledgeEnglishFluentSpanishBasic knowledge
Project history
Developing and maintaining enterprise backend services using Java and Spring ecosystem. Hands-on experience with Angular for insurance calculators. Skilled in CI/CD Jenkins deployment. Support for AWS cloud infrastructure on basic DevOps level. Collaboration with cross-functional teams, product owners, analysts, and QA teams in agile Scrum environment.
Developed and maintained a corporate ERP system using Gupta Centura IDE. Worked extensively with Oracle Database, including schema design and optimization. Performed business analysis, data migration, and system performance tuning. Provided long-term system support and enhancements.