AdrianZimbran
Java & Spring Boot Expert
Backend-focused engineer with 7+ years building enterprise applications. Currently modernizing NATO cloud infrastructure at Thales Group with Keycloak & OpenID Connect.
Currently at
Thales Group
Years Experience
Enterprise Projects
Certifications
Technologies
Skills & Technologies
Production-tested technologies with deep expertise in backend systems
Backend
- Java & Spring Boot
- Microservices Architecture
- RESTful API Design
- Oracle Flexcube Banking
- Message Queues (Kafka/RabbitMQ)
- Database Optimization
Frontend
- Angular
- React & Next.js
- TypeScript
- Thymeleaf
- Responsive Design
- Bootstrap
Cloud
- Google Cloud (GCP)
- AWS
- Microsoft Azure
- Docker & Kubernetes
- CI/CD Pipelines
- Jenkins
Security
- Keycloak
- OAuth 2.0 & OIDC
- JWT & SAML
- LDAP Integration
- Identity & Access Management
- Single Sign-On (SSO)
Professional Experience
From banking systems to NATO cloud infrastructure
Java Backend Developer (Contractor)
Thales Group • Bucharest, Romania
Cloud migration & modernization of authentication/login systems for a NATO-related program on Google Cloud.
- Member of Cloud Center of Excellence (CCOE), driving cloud migration initiatives
- Modernized authentication platform using Java + Spring Boot with Keycloak integration
- Implemented OpenID Connect (OIDC)-based authentication flows for modern IAM standards
- Ensured secure rollout and minimal disruption during platform/runtime modernization
Java Backend Developer
Romanian Investment & Development Bank (RIDB) • Bucharest, Romania
Full-stack development for banking systems with Oracle Flexcube integration and SWIFT payments.
- Developed scalable Java applications ensuring high performance and security
- Maintained and troubleshot Oracle Flexcube modules for banking systems
- Integrated SWIFT payments with Oracle Flexcube for international transactions
- Built custom access rights management with LDAP for centralized authentication
Java Backend Developer
HCL Technologies • Remote, Romania
Developed and maintained enterprise Java backend applications using Spring Boot framework.
- Collaborated with HP on successful project delivery and milestones
- Implemented microservices architecture for modular, scalable development
- Integrated AWS and Azure cloud services for enhanced performance
- Mentored junior developers, conducting code reviews and enforcing best practices
Backend Web Developer
BNG Ferendia IT • Resita, Romania
Backend development using PHP/Symfony and later transitioning to Java/Spring Boot.
- Developed clean code with PHP, Symfony 4 framework, and MySQL
- Transitioned to Java and MongoDB on Spring Boot platform
- Collaborated with senior developers on code reviews via Git/BitBucket
Certifications
Verified skills and continuous learning
Competition Awards
Academic achievements and innovative projects
2nd Prize - CADET-NAV 2019
Mircea cel Batran Naval Academy
Arduino sound spectrum analyzer with LED matrix
2nd Prize - International Conference
Aurel Vlaicu University, Arad
ESP8266 wireless signal device
3rd Prize - International Symposium
Agora University, Oradea
BADUSB security research
Education
Academic foundation and early career experience
Engineering Degree
Babes-Bolyai University, Resita
NTT DATA Internship
Cluj, Romania
Let's Build SomethingGreat Together
Looking for a reliable backend developer for your enterprise project? Let's discuss how I can help bring your vision to life.