Csaba M.

Senior Java Backend Developer (Freelancer, 100% remote)

Paralimni, Cyprus

Experience

Sep 2024 - Present
1 year 3 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 (pioneer project)
  • Built 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

Senior Java Backend Developer

payolution GmbH

  • Designed and implemented a RESTful API module, automating manual Merchant Onboarding processes, achieving 300% improvement
  • Collaborated on decomposition of monolithic application, enhancing system modularity and maintainability
  • Integrated SonarQube with GitHub code repositories, enabling better maintainability of legacy code base
  • Integrated new codebase with 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 Kotlin project
  • Improved source code quality by maintaining SonarQube quality gates as a member of the architecture team
  • Participated in the technical decision process of migrating to a cloud solution of the document management system
  • Provided four-eye principle backend solution for financially relevant pages
  • Worked together with DevOps on platform fine-tuning: performance and configuration distribution
Mar 2015 - Aug 2019
4 years 6 months
Mattersburg, Austria

Java Software Developer

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 / Senior Java Developer

AdNovum Hungary Kft

  • Upgraded, extended, and maintained the company's internal application for work time, project time, and 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 front-end business logic and workflow (GWT), implemented back-end business logic and backend workflow (Java), extended persistence mechanism (Hibernate), and 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
  • Actively participated as a developer member of the bug-fix team
  • Developed and maintained project builder and deployment scripts, including DevOps tasks in Python under Linux
  • Performed deep-diagnosis of the application using JProfiler
  • Participated in the development of a greenfield online school administration system
  • Took part 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.

Languages

Hungarian
Native
English
Advanced

Education

Oct 1998 - Jun 2001

Kecskemet College

Bachelor's Degree · Information Technology · Kecskemét, Hungary

Certifications & licenses

AWS Certified Cloud Practitioner

OCAJP 7 Exam 1Z0-803 (SUN Certificate)

Oracle

Team Leader Training

Krauthammer

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