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Hello, I'm Marius Popescu, a Senior Java Developer with over seven years of experience building scalable microservices and cloud-native applications. I design high-performance backend systems using Spring Boot, Hibernate, and modern architectures for Banking, Insurance, and Government sectors, with a focus on performance and clean code. I thrive in cross-functional teams, mentor junior developers, and enjoy turning complex requirements into robust, maintainable solutions. I'm comfortable navigating multi-cloud environments (Azure, AWS, GCP) and improving system reliability through solid testing and automation.…Hello, I'm Marius Popescu, a Senior Java Developer with over seven years of experience building scalable microservices and cloud-native applications. I design high-performance backend systems using Spring Boot, Hibernate, and modern architectures for Banking, Insurance, and Government sectors, with a focus on performance and clean code. I thrive in cross-functional teams, mentor junior developers, and enjoy turning complex requirements into robust, maintainable solutions. I'm comfortable navigating multi-cloud environments (Azure, AWS, GCP) and improving system reliability through solid testing and automation.

Marius Popescu

Web Developer, Programmer, Full Stack Developer, +2

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Hello, I'm Marius Popescu, a Senior Java Developer with over seven years of experience building scalable microservices and cloud-native applications. I design high-performance backend systems using Spring Boot, Hibernate, and modern architectures for Banking, Insurance, and Government sectors, with a focus on performance and clean code. I thrive in cross-functional teams, mentor junior developers, and enjoy turning complex requirements into robust, maintainable solutions. I'm comfortable navigating multi-cloud environments (Azure, AWS, GCP) and improving system reliability through solid testing and automation.…Hello, I'm Marius Popescu, a Senior Java Developer with over seven years of experience building scalable microservices and cloud-native applications. I design high-performance backend systems using Spring Boot, Hibernate, and modern architectures for Banking, Insurance, and Government sectors, with a focus on performance and clean code. I thrive in cross-functional teams, mentor junior developers, and enjoy turning complex requirements into robust, maintainable solutions. I'm comfortable navigating multi-cloud environments (Azure, AWS, GCP) and improving system reliability through solid testing and automation.

Available to hire

Hello, I’m Marius Popescu, a Senior Java Developer with over seven years of experience building scalable microservices and cloud-native applications. I design high-performance backend systems using Spring Boot, Hibernate, and modern architectures for Banking, Insurance, and Government sectors, with a focus on performance and clean code.

I thrive in cross-functional teams, mentor junior developers, and enjoy turning complex requirements into robust, maintainable solutions. I’m comfortable navigating multi-cloud environments (Azure, AWS, GCP) and improving system reliability through solid testing and automation.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Romanian, Moldavian, Moldovan

Fluent

English

Fluent

Work Experience

Senior Java Developer at Luxoft Romania

June 1, 2022 - Present

Architected 7+ microservices using Spring Boot/Hibernate, reducing system latency by 35%. Led code reviews for 5 junior developers, establishing team coding standards. Reduced production incidents by 40% through comprehensive testing (JUnit, integration tests). Automated 20+ manual processes using Ksh/Perl, saving 15 hours/week. Migrated 3 legacy monoliths to microservices on Azure cloud. Collaborated with global teams using GitLab, Jira, and Confluence.

Java Developer at IBM Romania

June 1, 2022 - October 16, 2025

Maintained IBM Cloud platform for AEGON Netherlands, managing 500K+ policies and 10K+ daily transactions. Implemented 25+ microservices features using Spring Boot, reducing policy processing time by 30%. Automated environment deployments (PROD/SIT/DEV/UAT) via PowerShell and Linux scripts. Resolved 150+ production incidents with a 4-hour average resolution time. Achieved 85%+ code coverage using JUnit. Also developed OMS for ERGO Insurance, handling 2M+ documents monthly; designed 5 microservices for document generation with 99.5% delivery success; implemented Spring Batch processing for 100K+ weekly jobs; created Kibana dashboards for real-time monitoring.

Java / Web Developer at Cypress Global Services

October 1, 2020 - October 16, 2025

Kanexon Social Media Platform: Built full-stack social media application serving 5K+ users. Developed authentication and admin modules; Created secure login microservices using Java and Firebase. Designed admin dashboards with JavaScript, jQuery, and Bootstrap. Improved API response times by 35% through optimized Firebase rules.

Java / Web Developer at Cogent Infotech Corporation

May 1, 2020 - October 16, 2025

Developed enterprise system for Virginia Social Services processing 50K+ monthly applications for Medicaid, TANF, SNAP serving 1.2M+ residents. Implemented IRS electronic income verification, reducing manual processing by 60%. Developed 15+ RESTful web services for eligibility determination workflow. Optimized Oracle queries, reducing eligibility processing from 5 minutes to 45 seconds. Achieved 90%+ unit test coverage using JUnit. Built rental property platform with 1K+ listings and 500+ users; Architected microservices with Spring Boot and Spring Security OAuth2; Deployed to AWS using RDS and EC2 with 99% uptime.

Software Developer (Capstone Project) at Bellevue College & Amazon

August 1, 2018 - October 16, 2025

BC Adviser, an Amazon Alexa Skill voice-enabled college adviser using AWS Lambda and Node.js. Built conversational logic using Java, JavaScript, and Node.js. Deployed via AWS Lambda and Alexa SDK.