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I am a Full Stack Engineer with 4+ years of experience designing and delivering scalable backend and full-stack applications, with strong expertise in Java, Spring Boot, React/React Native, and RESTful APIs. I enjoy turning complex problems into robust, maintainable software and collaborating with cross-functional teams to ship value. I’ve contributed to EV charging platforms and payment integrations, built dashboards, and implemented features across the stack, with a focus on performance, reliability, and clean architecture. I’m always eager to learn and apply new technologies to improve system reliability and scalability.…I am a Full Stack Engineer with 4+ years of experience designing and delivering scalable backend and full-stack applications, with strong expertise in Java, Spring Boot, React/React Native, and RESTful APIs. I enjoy turning complex problems into robust, maintainable software and collaborating with cross-functional teams to ship value. I’ve contributed to EV charging platforms and payment integrations, built dashboards, and implemented features across the stack, with a focus on performance, reliability, and clean architecture. I’m always eager to learn and apply new technologies to improve system reliability and scalability.

Onisim Rotaru

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

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I am a Full Stack Engineer with 4+ years of experience designing and delivering scalable backend and full-stack applications, with strong expertise in Java, Spring Boot, React/React Native, and RESTful APIs. I enjoy turning complex problems into robust, maintainable software and collaborating with cross-functional teams to ship value. I’ve contributed to EV charging platforms and payment integrations, built dashboards, and implemented features across the stack, with a focus on performance, reliability, and clean architecture. I’m always eager to learn and apply new technologies to improve system reliability and scalability.…I am a Full Stack Engineer with 4+ years of experience designing and delivering scalable backend and full-stack applications, with strong expertise in Java, Spring Boot, React/React Native, and RESTful APIs. I enjoy turning complex problems into robust, maintainable software and collaborating with cross-functional teams to ship value. I’ve contributed to EV charging platforms and payment integrations, built dashboards, and implemented features across the stack, with a focus on performance, reliability, and clean architecture. I’m always eager to learn and apply new technologies to improve system reliability and scalability.

Available to hire

I am a Full Stack Engineer with 4+ years of experience designing and delivering scalable backend and full-stack applications, with strong expertise in Java, Spring Boot, React/React Native, and RESTful APIs. I enjoy turning complex problems into robust, maintainable software and collaborating with cross-functional teams to ship value.

I’ve contributed to EV charging platforms and payment integrations, built dashboards, and implemented features across the stack, with a focus on performance, reliability, and clean architecture. I’m always eager to learn and apply new technologies to improve system reliability and scalability.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Romanian, Moldavian, Moldovan

Fluent

English

Advanced

Work Experience

Software Engineer at General Security

May 1, 2021 - Present

Designed and maintained scalable backend services using Java and Spring Boot for EV charging infrastructure. Built full-stack applications using React, React Native, and Node.js integrated with Java-based REST APIs. Implemented OCPP protocol features enabling communication between EV charging stations and backend systems. Developed and maintained multiple production systems including: EV station monitoring dashboards OCPP translation and diagnostic tools Payment device integration services In-station display applications EV station management portals Collaborated with cross-functional teams to improve system reliability, performance, and scalability.

Software Developer Intern at Smedix Inc

November 1, 2020 - February 1, 2021

Designed and implemented two fully functional applications: ERP system and a medical desktop application; contributed to project architecture and hands-on development.