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Csaba Miklos

@csabamiklos

I am a Senior Java backend developer delivering scalable cloud-native systems and accelerating delivery with AI-assisted tools.

Cyprus

Message

What I'm looking for

I'm seeking remote or hybrid senior backend roles where I can design scalable Java/Spring systems, lead or mentor teams, work with AWS/cloud-native architectures, and apply AI-assisted tools to accelerate delivery.

I am a Senior Java backend developer with extensive experience designing and maintaining scalable Spring Boot backend systems, migrating monoliths to AWS, and integrating messaging and databases (Kafka, PostgreSQL) to improve performance and reliability. I have driven measurable improvements such as 300% faster onboarding automation and 10–15x query performance gains.

As a freelancer I leverage AI-assisted tools (Cursor, Windsurf) to accelerate delivery and produce pixel-perfect Angular frontends with TypeScript. I mentor teams, maintain code quality with SonarQube, collaborate on architecture and DevOps, and seek remote roles in collaborative, dynamic teams.

Experience

Work history, roles, and key accomplishments

Current

Senior Java Backend Developer

Current

Unzer GmbH

Sep 2024 - Present (1 year)

Developed a greenfield Spring Boot backend with RESTful APIs and PostgreSQL and delivered an AI-assisted Angular landing page, reducing implementation time by 3–5x.

Java Spring Boot REST APIs PostgreSQL Angular TypeScript Figma Git

Senior Java Backend Developer (Hybrid)

payolution GmbH (FinTech sector)

Aug 2019 - Sep 2024 (5 years 1 month)

Designed and implemented RESTful API for Merchant Onboarding (300% faster). Decomposed monolith to microservices, boosting modularity. Optimized DB queries (10–15x). Led AWS cloud migration (Oracle→Aurora), DevOps tasks. Integrated Kafka, SonarQube, automated tests, Ansible configs. Mentored juniors, improved code quality, contributed to architecture and cloud decisions.

Java Software Developer

I-NEW Communicative Solutions GmbH (Telecom sector)

Mar 2015 - Aug 2019 (4 years 5 months)

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

TechProject Leader/Senior Java Developer

AdNovum Hungary Kft (Banking sector)

May 2011 - Mar 2015 (3 years 10 months)

Led upgrade, extension, and maintenance of internal time & budget management app, owning full technical content. Managed 4 developers with quality oversight. Built company website on Magnolia CMS. Developed Swiss banking contract management tool: redesigned UI (JSP), implemented business logic/workflows (GWT) and backend

Java Developer / Team Leader

Taninform Zrt. (Education sector)

Aug 2004 - May 2011 (6 years 9 months)

Led cooperation between testers and developers, managed bug-fix team while contributing as developer. Built and maintained project builder & deployment scripts (Python/Linux). Performed deep profiling with JProfiler. Contributed to greenfield online school system and implemented architecture for UI and backend.