Open to opportunities

Lightoton User

@lightotonuser

Message

Java backend developer building REST APIs with Java and Spring Boot.

Germany

Message

What I'm looking for

I’m looking for a Java backend role where I can build REST APIs with Spring Boot, work with security and databases, and grow fast through real projects, code reviews, and testing. I’m available for remote start and planning relocation to Vienna.

I’m a Java Backend Developer with practical experience building REST APIs using Java and Spring Boot. I work in a structured manner, learn quickly, and strengthen my backend skills through my own projects, ongoing education, and technical content creation.

In my freelancing work, I develop web applications and B2B IT solutions for small businesses, including full-stack admin panel architecture and implementation (e.g., for gyms) to optimize processes. I also containerize and deploy applications securely with Docker, and I’m comfortable taking ownership end-to-end.

As a Junior Java Backend Developer (internship/intensive project), I implemented backend functions and REST APIs, worked with relational databases using Spring Data JPA, and wrote unit and integration tests with JUnit and Mockito. I’ve also contributed to code reviews and API documentation with Swagger, and I keep expanding my depth across security (Spring Security), data access (Hibernate), and practical API development.

Experience

Work history, roles, and key accomplishments

Current

Freelance Java Backend Dev

Current

Freelance

Jun 2026 - Present (0 months)

Developed web applications and B2B IT solutions for small businesses, including full-stack admin panels for process optimization. Containerized and securely deployed applications using Docker.

Java Spring Boot REST APIs Docker Admin Panel Development Full Stack

Current

Co-founder & Content Creator

Current

JavaRangers

Jun 2024 - Present (2 years)

Created Java and backend development educational content for JavaRangers, planning technical topics for videos and podcasts. Translated complex concepts into clear, structured explanations for learners.

Java Backend Development REST APIs Technical Writing Lesson planning Content Production Developer Education

Junior Java Backend Developer

Smartsoftacademy

May 2024 - Oct 2025 (1 year 5 months)

Developed backend functions and REST APIs using Java and Spring Boot, working with relational databases via Spring Data JPA. Wrote unit and integration tests with JUnit/Mockito and contributed to code reviews and Swagger API documentation.

Java Spring Boot Spring Security Hibernate PostgreSQL REST APIs Junit Mockito Swagger

Education

Degrees, certifications, and relevant coursework

STARTA Institute by Tel-Ran

Backend Java Development Program, Backend Java Development

2023 - 2024

Completed a Backend Java Development program focused on Java Core, OOP, Spring Boot, Spring Security, and Spring Data JPA, alongside SQL and PostgreSQL. Practiced building REST APIs and writing unit and integration tests with JUnit and Mockito.

College for Service Professions No. 3

Production Equipment Setter (Skilled Worker), Production Equipment (Food Industry)

2016 - 2020

Vocational training as a production equipment setter (food industry), graduating as a state-recognized skilled worker. Studied setup, maintenance, and optimization of production equipment.