Csaba (C) M.

Senior Java Backend Developer (Freelancer, 100% remote)

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Paralimni, Cyprus

Experience

Sep 2024 - Present
1 year 4 months
Paralimni, Cyprus
Remote

Senior Java Backend Developer (Freelancer, 100% remote)

Unzer GmbH

  • Developed a new complex landing page in an AI-assisted (Cursor, Windsurf) Angular project, reducing implementation time by 3-5x
  • Implemented a greenfield Spring Boot backend system project containing RESTful APIs with PostgreSQL in an AI-assisted manner
  • Transformed Figma designs into responsive, pixel-perfect Angular web apps across all screen sizes in TypeScript aided by AI assists
Aug 2019 - Sep 2024
5 years 2 months
Vienna, Austria
Hybrid

Senior Java Backend Developer (Hybrid)

payolution GmbH

  • Designed and implemented a RESTful API module, automating manual Merchant Onboarding processes, achieving 300% improvement
  • Collaborated on decomposition of a monolithic application, enhancing system modularity and maintainability
  • Integrated SonarQube with GitHub code repositories, enabling better maintainability of a legacy code base
  • Integrated new codebase with a message queuing system using Apache Kafka
  • Optimized database queries, improving query performance by 10-15x
  • Participated in migration of monolithic software systems from on-premises to AWS cloud platform, including database migration (Oracle 19c to Amazon Aurora PostgreSQL/Amazon Oracle) and DevOps tasks
  • Developed automated tests for platform integrity verification
  • Provided configuration management solution under Ansible, enabling seamless migration on AWS Cloud in a database-agnostic approach
  • Managed junior developers, improving code quality and team productivity
  • Extended the project with Kotlin
  • Improved source code quality by maintaining SonarQube quality gates
  • Participated in technical decision making for migrating a document management system to a cloud solution
  • Provided a 4-eye principle backend solution for financially relevant pages
  • Collaborated with DevOps on platform fine-tuning: performance and configuration distribution
Mar 2015 - Aug 2019
4 years 6 months
Mattersburg, Austria

Java Software Developer (core component team)

I-NEW Communicative Solutions GmbH

  • Extended, integrated, and implemented new features for core components while maintaining the existing code
  • Handled bug reports and supported testers
  • Participated in performance-amending sessions
May 2011 - Mar 2015
3 years 11 months
Budapest, Hungary

Technical Project Leader

AdNovum Hungary Kft

  • Took part in upgrading, extension, and maintenance of the company's internal application (work time, project time & budget price management) and took full responsibility for the technical content
  • Managed the daily work of four developers, including quality supervision
  • Developed the company's World Wide Web site using an Enterprise Content Management System (Magnolia CMS)
  • Developed the Contract Management Tool module of a Swiss banking software: changed front-end UI (JSP), implemented frontend business logic and workflow (GWT), implemented backend business logic and backend workflow (Java), extended the persistence mechanism (Hibernate), implemented scheduled operations and export/import functionality
Aug 2004 - May 2011
6 years 10 months
Budapest, Hungary

Java Developer / Team Leader

Taninform Zrt.

  • Managed the cooperation of tester and developer groups
  • Managed and was an active developer member of the bug-fix team
  • Developed and maintained project builder and deployment scripts, including DevOps tasks in Python under a Linux system
  • Performed deep diagnosis of the application using the JProfiler profiler
  • Participated in the development of a greenfield project: an online school administration system
  • Participated in the implementation of the software architecture for both the user interface and the backend

Summary

Proven Senior Java Backend Developer with extensive experience, currently working as a freelancer. Skilled in designing and maintaining backend systems, integrating cloud technologies, and delivering scalable solutions. Passionate about leveraging AI-assisted development tools (Cursor AI, Windsurf AI) to accelerate software delivery and maintain high code quality. Open to remote opportunities in dynamic, collaborative teams.

Skills

  • Core Java 1.6, 1.8 (Expert)
  • Typescript (Advanced)
  • Sql (Expert)
  • Pl/pgsql (Advanced)
  • Yaml (Advanced)
  • Bash Scripting (Advanced)
  • Kotlin (Intermediate)
  • Python (Intermediate)
  • Cursor Ai Code Editor (Advanced)
  • Windsurf Ai (Cascade) Code Editor (Advanced)
  • Spring Framework (Expert)
  • Spring Boot 1.5, 2.x (Expert)
  • Tomcat / Glassfish / Jboss (Expert)
  • Git / Svn / Cvs (Expert)
  • Oracle Database 11g-19c (Expert)
  • Postgresql (Expert)
  • Hibernate / Eclipselink (Expert)
  • Wicket / Struts / Tapestry / Gwt (Advanced)
  • Log4j / Logback (Advanced)
  • Spring Batch / Quartz / Cron (Advanced)
  • Apache Activemq / Apache Kafka (Advanced)
  • Apache Camel (Intermediate)
  • Liquibase (Advanced)
  • Apache Maven / Ansible / Ant / Ivy (Advanced)
  • Mockito / Junit (Advanced)
  • Sonarqube (Advanced)
  • Splunk (Advanced)
  • Jira / Confluence / Bitbucket / Github (Advanced)
  • Postman (Advanced)
  • Mongodb (Intermediate)
  • Docker / Podman (Advanced)
  • Figma (Advanced)
  • Strong Problem-solving Skills
  • Expert In Coding
  • Extensive Technical Knowledge
  • Effective Communication
  • Leadership Experience
  • Ability To Mentor

Languages

Hungarian
Native
English
Advanced

Education

Oct 1998 - Jun 2001

Kecskemet College

Information Technology Engineer · Information Technology Profession · Kecskemét, Hungary

Certifications & licenses

AWS Certified Cloud Practitioner

OCAJP 7 Exam 1Z0-803 (SUN Certificate)

Oracle

Team Leader Training

Krauthammer

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