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Claudiu D.
Senior Java Developer
Claudiu is a Senior Java Developer with over 20 years of experience in enterprise software engineering, specializing in Java EE, Spring Boot, and microservices. He has delivered robust and scalable backend systems for high-profile clients, including HP, Qualcomm, Cybereason, and Eurostat.
He has expertise in REST API design, Kafka integration, and containerized deployments using Docker and Kubernetes, combining deep architectural knowledge with practical, hands-on development.
Throughout his career, Claudiu has worked across finance, telecom, and cybersecurity industries, contributing to full SDLC projects within distributed teams and employing Agile and RUP methodologies. He also brings extensive experience in CI/CD, automated testing, and mentoring, supporting the growth of engineering teams while ensuring high-quality software delivery.
Main expertise
- Java 23 years
- SQL 15 years
- Spring Boot 10 years
Other skills
- Apache Kafka 3 years
- Kotlin 1 years

Selected experience
Employment
Senior Java Consultant
Luxoft Romania (Client: Finastra) - 10 months
Luxoft is a global digital strategy and software engineering company delivering bespoke solutions to clients across financial services, automotive, and telecom industries.
- Led the migration of Finastra’s Pegasus platform from Flink and Micronaut to a modern Spring Boot–based architecture.
- Refactored legacy modules into clean, modular Java 17 codebases, improving maintainability and reducing technical debt.
- Streamlined CI/CD pipelines using Maven and Sonar, enforcing code quality and automated static analysis.
- Ensured data consistency and performance through extensive regression testing and API refactoring.
- Collaborated closely with DevOps to optimize build and deployment efficiency in distributed environments.
Technologies:
- Technologies:
Java
Spring Boot
Maven
Git
SonarQube
Apache Flink
Senior Java Consultant
Orion Romania (Client: Qualcomm) - 1 year
Orion Romania delivers advanced software engineering services to global clients, including telecommunications and IoT enterprises.
- Enhanced backend features for Qualcomm’s Edgewise RAN Service Automation Platform, enabling smarter cloud-based 5G orchestration.
- Developed and modularized services during the transition to a microservices architecture, improving scalability.
- Provided Level 3 support and resolved complex backend issues to ensure uptime and operational reliability.
- Implemented asynchronous communication using Kafka and ActiveMQ, increasing processing throughput.
- Containerized applications with Docker and Helm charts for seamless Kubernetes deployments.
Technologies:
- Technologies:
MySQL
MongoDB
Docker
Java
Apache Kafka
Spring Boot
Kubernetes
Helm
Java Developer
NEXTLEVELTEC - 3 years 2 months
NEXTLEVELTEC is an IT consultancy specializing in delivering enterprise-grade software solutions and digital transformation projects for clients across multiple industries. The company provides technical expertise in backend systems, cloud architectures, and scalable microservice deployments.
- Served as a senior Java consultant across several client projects, supporting the design, implementation, and optimization of enterprise applications.
- Developed proof-of-concept (POC) solutions to validate new architectural approaches and technology integrations for client systems.
- Built and maintained microservices using Spring Boot and Apache Kafka, ensuring scalability and reliability.
- Implemented RESTful APIs and supported CI/CD workflows to streamline integration between distributed systems.
- Participated in maintenance and feature enhancement tasks, improving performance and stability in production environments.
- Collaborated with cross-functional teams to ensure best practices in code quality, documentation, and DevOps alignment using Kubernetes.
Technologies:
- Technologies:
Java
- Microservices
Apache Kafka
Spring Boot
Kubernetes
REST API
Senior Java Consultant / Team Lead
HCL Romania (Client: HP Inc.) - 9 months
HCL is a global technology company providing IT and engineering services across industries including manufacturing, banking, and hardware.
- Designed and implemented backend features for HP’s enterprise printer management platform (HPI-HpOne).
- Led a 5-person developer team through the entire SDLC, ensuring technical alignment and timely delivery.
- Deployed services in AWS and integrated S3 and Lambda for scalable data processing.
- Performed code reviews, optimized microservices performance, and guided developers on best practices.
- Coordinated with QA and DevOps to streamline CI/CD and reduce deployment errors.
Technologies:
- Technologies:
MongoDB
Docker
Java
Spring Boot
Maven
AWS Lambda
AWS S3
Git
SonarQube
Education
BSc.Computer Science
IT College of Bucharest University · 1998 - 2001
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