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I am Csaba Miklos, a freelance senior Java backend developer with a passion for building scalable, cloud-native backends and AI-assisted development tools. I enjoy turning complex requirements into robust, maintainable software and collaborating with dynamic teams. With a proven track record across fintech, telecom, and education sectors, I excel at designing robust APIs, integrating cloud platforms (AWS) and CI/CD pipelines, and improving code quality through tooling and automated tests. I thrive in remote and hybrid settings and am keen to mentor teammates while applying AI-assisted tooling to speed up software delivery.…I am Csaba Miklos, a freelance senior Java backend developer with a passion for building scalable, cloud-native backends and AI-assisted development tools. I enjoy turning complex requirements into robust, maintainable software and collaborating with dynamic teams. With a proven track record across fintech, telecom, and education sectors, I excel at designing robust APIs, integrating cloud platforms (AWS) and CI/CD pipelines, and improving code quality through tooling and automated tests. I thrive in remote and hybrid settings and am keen to mentor teammates while applying AI-assisted tooling to speed up software delivery.

Csaba Miklos

Back-End Developer, Full Stack Developer, Web Developer, +2

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I am Csaba Miklos, a freelance senior Java backend developer with a passion for building scalable, cloud-native backends and AI-assisted development tools. I enjoy turning complex requirements into robust, maintainable software and collaborating with dynamic teams. With a proven track record across fintech, telecom, and education sectors, I excel at designing robust APIs, integrating cloud platforms (AWS) and CI/CD pipelines, and improving code quality through tooling and automated tests. I thrive in remote and hybrid settings and am keen to mentor teammates while applying AI-assisted tooling to speed up software delivery.…I am Csaba Miklos, a freelance senior Java backend developer with a passion for building scalable, cloud-native backends and AI-assisted development tools. I enjoy turning complex requirements into robust, maintainable software and collaborating with dynamic teams. With a proven track record across fintech, telecom, and education sectors, I excel at designing robust APIs, integrating cloud platforms (AWS) and CI/CD pipelines, and improving code quality through tooling and automated tests. I thrive in remote and hybrid settings and am keen to mentor teammates while applying AI-assisted tooling to speed up software delivery.

Available to hire

I am Csaba Miklos, a freelance senior Java backend developer with a passion for building scalable, cloud-native backends and AI-assisted development tools. I enjoy turning complex requirements into robust, maintainable software and collaborating with dynamic teams.

With a proven track record across fintech, telecom, and education sectors, I excel at designing robust APIs, integrating cloud platforms (AWS) and CI/CD pipelines, and improving code quality through tooling and automated tests. I thrive in remote and hybrid settings and am keen to mentor teammates while applying AI-assisted tooling to speed up software delivery.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Hungarian

Fluent

English

Advanced

Work Experience

Senior Java Backend Developer (Freelancer, 100% remote) at Unzer GmbH

September 20, 2024 - November 3, 2025

Developed a new complex landing page in an AI-assisted (Cursor, Windsurf AI) Angular project; implemented a robust backend on a Spring Boot stack; reduced implementation time for features and delivered RESTful services with PostgresSQL; transformed UI designs from Figma into responsive, pixel-perfect Angular web apps; collaborated with DevOps and AI assistants to accelerate delivery.

Senior Java Backend Developer (Hybrid) at Payolution GmbH

September 20, 2024 - September 20, 2024

Designed and implemented a RESTful API module; automated manual Merchant Onboarding processes; achieved ~300% improvement in process efficiency; integrated SonarQube with GitHub repositories to improve maintainability of legacy code; migrated monolithic software components to a cloud-ready architecture (AWS) and database migration (Oracle 19c to Amazon Aurora; PostgreSQL); produced automated tests for platform integrity verification; configured management with Ansible; mentored junior developers.

Java Software Developer (core component team) at I-NEW Communications Solutions GmbH

August 1, 2019 - August 1, 2019

Extended, integrated, and implemented new features for core components while maintaining existing code; contributed to performance improvements and bug fixes; participated in bug reports and testing.

Technical Project Leader at Ad Novum Hungary Kft

March 1, 2015 - March 1, 2015

Led technical projects in the banking sector; coordinated cross-functional teams, managed project timelines and deliverables, and ensured alignment with client requirements.

Java Developer / Team Lead at Tanin inform Zrt. (Education sector)

May 1, 2011 - May 1, 2011

Managed tester and developer groups; developed and maintained enterprise applications; contributed to backend architecture and delivery.