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Cristian Țone

@cristianone

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Senior Java developer specializing in microservices, scalable systems, and modernizing legacy enterprise applications.

Romania

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What I'm looking for

I seek remote or B2B contracting roles where I can lead backend teams, modernize legacy systems, and deliver scalable microservices while mentoring engineers and improving developer workflows.

I am a Senior Java Developer with over 16 years of professional experience, combining 12 years in desktop SWT applications and 4 years in backend web development. I design and implement scalable, maintainable, and secure enterprise systems using Java (8–25), Spring Boot, and microservices.

I have led cross-functional international teams, modernized legacy systems (Eclipse to IntelliJ, Java 8 to Java 21+), and improved developer workflows, UI rendering, and onboarding processes. My contributions include building user-rights microservices, optimizing NatTable rendering, and integrating messaging systems like Kafka and ActiveMQ.

I am proactive, ownership-driven, and focused on delivering quality software that makes measurable impact; I also create documentation, define hotfix and code-review processes, and mentor teams to raise code quality and operational excellence.

Experience

Work history, roles, and key accomplishments

Lead Developer

NTT Data

Jun 2021 - Dec 2024 (3 years 6 months)

Led a team of six developers to design and implement Spring-based microservices for user rights management and partner integrations, improved UI rendering by 40% via NatTable optimizations, and migrated legacy codebases from Java 8 to Java 21.

Java 8 Spring Boot Microservices SWT Docker Kubernetes Kafka Jenkins

Lead Developer

P4B

Oct 2020 - May 2021 (7 months)

Led a two-person team maintaining Drools-based business rules for medical device requests, implemented new REST APIs and integrated ActiveMQ message types to streamline processing.

Java 8 Drools REST APIs ActiveMQ Spring Boot Jenkins Git Maven

Senior Java Developer

Zenitech

Jan 2020 - May 2020 (4 months)

Worked on the gateway of a planning platform with focus on unit, integration, and system tests, simplified processes and produced technical documentation to improve team delivery.

Pitest Spring Boot Maven Splunk Testing Confluence

Senior Java Developer

Synopsis

Apr 2018 - Nov 2019 (1 year 7 months)

Developed desktop simulation tools for automotive manufacturers, built an INI editor with SWT and a real-time signal visualization framework using JOGL to support simulation workflows.

Java 8 SWT JOGL Maven Git Desktop Applications

Java Developer

Konecranes

Nov 2007 - Apr 2018 (10 years 5 months)

Developed Java desktop applications for simulation and logistics domains, created graphical editors and replay animators for terminal layouts, and maintained OpenWebStart applications.

SWT Eclipse RCP Swing C++Ant Simulation