Adrian Zimbran

Expert Java & Spring Boot development for robust, efficient backend systems that scale with your vision.

Learn More About My Approach
↓

About Me

A visionary Java Developer driven by passion to create solutions that redefine efficiency and innovation. I build systems that scale effortlessly, secure data meticulously, and exceed expectations. Ready to turn your ideas into groundbreaking success? Let's make it happen!

Work Experience

Java Backend Developer

Romanian Investment and Development Bank (RIDB)  |  Oct 2024 - Present  |  Bucharest, Romania

  • Java Application Development: Design and develop scalable and secure Java applications, ensuring high performance and reliability.
  • Deployment and Monitoring: Deploy applications to production and monitor their performance to ensure smooth operation.
  • Oracle Flexcube: Develop, maintain, and troubleshoot Oracle Flexcube modules, ensuring seamless banking integration, including Swift Payments.
  • System Optimization: Identify and resolve system bottlenecks to enhance performance and scalability.
  • Ideation & Collaboration: Brainstorm innovative solutions and work closely with QA, DevOps, and business teams to align development with needs.
  • Security & Best Practices: Adhere to security best practices in development and deployment processes.
  • Documentation: Prepare technical documentation, including user guides and operational procedures.

Java Backend Developer

HCL Technologies  |  Oct 2021 - Mar 2024  |  Remote, Romania

  • Developed, maintained, and debugged Java backend applications using Spring Boot, ensuring high performance and reliability.
  • Collaborated with cross-functional teams to design and implement cloud-based solutions.
  • Designed and optimized RESTful APIs to support various front-end and mobile applications.
  • Implemented microservices architecture for modular, scalable development.
  • Worked with AWS and Azure cloud services to enhance application performance and functionality.
  • Mentored junior developers to maintain code quality and best practices.
  • Optimized SQL and NoSQL databases for efficient data storage and retrieval.
  • Participated in Agile sprints, stand-ups, and retrospectives to ensure timely delivery of projects.
  • Resolved complex technical issues to maintain system uptime and client satisfaction.
  • Collaborated with HP on a project, contributing to key milestones and objectives.
  • Stayed updated on emerging technologies to continuously improve backend solutions.

Backend Web Developer

BNG Ferendia IT  |  Mar 2019 - Jun 2020  |  Reșița, Romania

  • Wrote clean, well-documented code and managed version control with Git (Bitbucket) for code reviews by senior developers.
  • Built web applications using PHP, HTML, Bootstrap, Twig, Symfony 4, and YAML; later integrated Java and MongoDB using Spring Boot.
  • Used Visual Studio Code as the primary development environment for efficient coding.

Freelancer Web Developer

Upwork  |  Feb 2021 - Present  |  London, United Kingdom

  • Handled projects involving Linux server maintenance, domain/hosting setup, PHP script debugging, website migrations, MySQL database creation, and API integrations.
  • Ensured client satisfaction, consistently earning 5-star feedback on completed freelance projects.

Skills & Certifications

Core Technical Skills

JavaExpert
Spring BootExpert
MicroservicesExpert
REST APIExpert
AWSAdvanced
AzureAdvanced
SQLAdvanced
MongoDBExpert
GitExpert

Digital Skills

Java Spring Boot Microservices RESTful API Maven Gradle Object-Oriented Programming CI/CD Jenkins Docker Git GitHub Bitbucket JIRA Azure AWS MongoDB MySQL JSON Web Development HTML5 Bootstrap API Integrations WordPress E-commerce Unit Testing Integration Testing Apache NGINX IIS Server Domain & Hosting XAMPP/WAMPP VMware (vSphere, vCenter, ESXi) Hyper-V Virtualization Platforms Linux Windows Postman Microsoft Office Suite Microsoft Word Microsoft Excel Microsoft PowerPoint Outlook LDAP Redis Cache Firebase JUnit OAuth2 JWT Spring Security OWASP

Certifications

Software Engineer Certificate

HackerRank | Oct 2024

View

SQL (Basic) Certificate

HackerRank | Oct 2024

View

REST API Development Certificate

HackerRank | May 2024

View

Java (Basic) Certificate

HackerRank | May 2024

View

Education

Engineering University Center of Babeș-Bolyai

Sep 2018 - Present  |  Reșița, Romania

Field of Study: Computer science, software development and analysis, database and network design and administration

High School Diploma (Informatics & Mathematics)

National College "Diaconovici-Tietz" Reșița  |  Aug 2014 - Jun 2018  |  Reșița, Romania

Projects & Awards

Arduino LED Matrix

2nd Prize, CADET-NAV 2019  |  Mircea cel Bătrân Naval Academy

An Arduino-based project that analyzes the sound spectrum of a song and visualizes it on a 50×50 LED matrix.

ESP8266 Wi‑Fi Jammer

2nd Prize, International Student Scientific Conference  |  Aurel Vlaicu University (June 2019)

Demonstrated a device using an ESP8266 module to jam wireless router signals.

BADUSB Security Demo

3rd Prize, "Brainstorming in the Agora" Symposium  |  Agora University (Oct 2019)

Programmed an ATTINY85 USB device to disable antivirus software and install malware on Windows 10, educating users on prevention.

Languages & Driving Licenses

Romanian

Mother Tongue

English

Listening: C1 | Spoken Production: B2
Reading: C1 | Spoken Interaction: C1 | Writing: C1

Driving Licenses

AM
B1
B

Internship

Practical Internship at NTT DATA

Jul 2021  |  Cluj-Napoca, Romania

Explored embedded systems by learning about C preprocessors and concurrency. Completed tasks like verifying palindromes in binary using bitwise operations, gaining valuable experience in low-level programming.

Hobbies & Interests

Web development has always been a passionate pursuit of mine, driving me to create dynamic websites and applications. This passion continuously expands my expertise across various facets of development and keeps me eager to learn more.

Volunteering

Students League CUBB

Sep 2014 - Present  |  Reșița, Romania

Managed internal communications, proofread content, updated the League's website, supported fundraising campaigns, and assisted with community surveys.

Get in Touch