Csaba M.
Senior Java Backend Developer (Freelancer, 100% remote)
Experience
Sep 2024 - Present
1 year 3 monthsParalimni, Cyprus
RemoteSenior 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 monthsVienna, 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 monthsMattersburg, 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 monthsBudapest, 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 monthsBudapest, 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
NativeEnglish
AdvancedEducation
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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