Zanfir Liliana-Petruta

Junior Software Engineer with a Bachelor’s degree in Computer Science, skilled in building responsive and scalable web and mobile applications using React.js, Flask, Python, Java and Firebase. Experienced in full-stack development, REST API integration and Agile methodologies. Developed:

• AI-powered university timetable generator - Built a full-stack web app using Flask and OpenAI GPT API to generate optimized class schedules.
• Android Tesla car sales app - Developed a mobile application with real-time data synchronization using Firebase for car inventory and sales tracking.

Strong problem-solving abilities, attention to detail and a passion for continuous learning and collaboration.

• Frontend & UI: React.js, JavaScript, HTML, CSS, Bootstrap, Figma, UI/UX Design, Responsive Design
• Backend & Databases: Python, Flask, SQL, MySQL, phpMyAdmin, Firebase Realtime Database
• Mobile & Other: Java, Android Studio, XML, OpenAI GPT API, Visual Studio Code, Git, GitHub

• Software Development Lifecycle (SDLC)
• Agile Methodology
• REST API Integration
• Mobile App Development

• Problem-solving & Attention to Detail
• Time Management & Team Collaboration
• Continuous Learning & Communication Skills

RobotGygax – Hackathon Project Unity, C#, Game Development

• Developed a 2D platformer game (Mario-style) during a fast-paced hackathon, focusing on level design, character mechanics, and gameplay flow.
• Implemented player movement, collision detection, scoring system, and game physics to create an engaging and responsive experience.
• Designed and integrated visual assets, animations, and sound effects, enhancing the overall look and feel of the game.
• Collaborated closely with a team of developers, sharing tasks, solving challenges under tight deadlines, and applying iterative development practices.
• Applied Unity best practices for scene management, prefabs, and script organization, ensuring the game was stable and playable.
• Delivered a working prototype that demonstrated creative problem-solving and the ability to translate ideas into interactive digital experiences.

Coffee Crafter: Create and Filter Your Perfect Cup Java, OOP, Visual Studio Code

• Developed a Java application with a graphical user interface to generate, organize, and filter detailed coffee information.
• Features include filtering by coffee grind, machine type, brand, caffeine content, roast level, and extraction method.
• Designed to be user-friendly for coffee enthusiasts, and useful for producers and sellers to manage inventory and perform market analysis.
• Applied Object-Oriented Programming principles to structure code cleanly and allow easy extension of features.
• Delivered a versatile and practical tool that helps users explore, organize, and analyze coffee collections efficiently.

Student Scholarship Management System Java, Spring Boot, MySQL, HTML, CSS, JavaScript, Apache POI, PDFBox

• Developed a Java web application for managing scholarship students at the university.
• Implemented role-based sections: Student login, Student dashboard, Secretary dashboard, Dean dashboard, and Scholarship lists.
• Student section: Provides quick access to scholarship types (merit, study, social), search and filter options, and personalized academic information.
• Dean section: Centralized management of scholarship programs, viewing student performances, and overseeing academic activities.
• Secretary section: Efficient administration of student data, processing scholarship requests, and managing academic records.
• Built secure login functionality with role-based access using Spring Security and database authentication.
• Integrated MySQL database via JDBC for reliable data storage and queries.
• Added data export features using Apache POI (Excel) and PDFBox (PDF) for reporting and analysis.
• Designed a responsive and intuitive interface with HTML, CSS, JavaScript, and Thymeleaf templates.
• Enhanced user experience with interactive charts for visualizing student averages using Chart.js.
• Delivered a scalable, secure, and fully functional tool for managing scholarship programs and supporting academic decision-making.

Manual Testing – Student Scholarship Application | Java, Spring Boot, MySQL, HTML, CSS, JavaScript

• Conducted manual testing of the web application for managing student scholarship requests.
• Tested key user roles: Student (view scholarship requests), Secretary (add student, submit scholarship requests, validate requests), Dean (generate reports, filter and view information).
• Verified primary functions: user authentication, adding and validating scholarship requests, viewing and exporting data.
• Checked supportive functions: student search, page navigation, logout, UI styling, and intuitive access.
• Identified potential instability areas: data validation (e.g., non-existent student ID), session handling (access after logout), database connection, and immediate status update after validation.
• Executed scenarios included invalid login, missing required fields, unauthorized page access, case-insensitive search, and sorting behavior.

Security Testing – Student Scholarship Application | Java, Spring Boot, MySQL, HTML, CSS, JavaScript, OWASP ZAP

• Performed security testing on the web application using OWASP ZAP 2.16.1 to detect vulnerabilities in the context of 19 attack types studied in the Security course.
• Verified protection against attacks such as CSRF, XSS, clickjacking, session ID exposure in URLs, and unsafe inclusion of external scripts.
• Detected medium- and low-level vulnerabilities and recommended remediation measures: enabling CSRF protection, adding HTTP security headers (X-Frame-Options, Content-Security-Policy, X-Content-Type-Options), using HttpOnly/SameSite cookies, and validating external JS/CSS resources with integrity attributes.
• Focused on ensuring confidentiality, integrity, and availability of the system.
• Security testing combined automated analysis (ZAP) with manual review of the application’s behavior under various attack simulations.

String Expression Calculator | C, Flex, Bison, Linux
Developed a string expression calculator on Linux using Flex & Bison, featuring both interpretative evaluation and graphical syntax tree visualization.

Supported single-character identifiers and string literals with escape sequences. Implemented string operations including:

• Increment/decrement of first character (++/)
• Case inversion (^)
• String length (~)
• Repetition (*)
• Substring extraction (/ and #)
• Concatenation (+)
• Substring deletion (-)
• Comparisons (==, !=, >, >=, <, <=)

Handled operator precedence and associativity, nested expressions with parentheses, and special characters inside strings (" and \).