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## EXPERIENCE

### Software Engineer
**Samsung R&D Vietnam**  
**Hanoi, Vietnam**  
**06/2024 - Present**

**System Security**
- Implement and improve features of the Android Security System.
- Participate in designing, implementing, and maintaining code within the Security Team.

### Software Engineer Intern
**Samsung R&D Vietnam**  
**Hanoi, Vietnam**  
**03/2024 - 06/2024**

**Secure Vault**
- Developed a secure vault for storing and delivering sensitive data within Android applications.
- Built a storage vault allowing applications to securely store sensitive data such as tokens and keys. Other applications can send API requests to store, request, modify, or delete data.
- Project consisted of three main modules: register, storage, and query. Developed workflows, core functionalities of the service, and managed a team of four members.
- Responsible for the register module, which allows other apps to register for the service. The app layer was built using Java, while the native layer was implemented with C++ using OpenSSL.
- Awarded Best Project by the Security Council.

### Research Assistant
**Hanoi University of Science and Technology**  
**Hanoi, Vietnam**  
**11/2023 - Present**

**Quantum Neural Network**
- Built a small QNN library that includes classes such as Feedforward, CNN, and LSTM. Researched important formulas for training networks, including gradient calculations (using the shift parameter rule for derivatives in quantum computing).
- Network structures are similar to classical neural networks, and the classes can be combined with classical networks to form hybrid networks. Used a simulator for testing due to lack of access to a quantum computer, resulting in good outcomes due to the absence of noise.
- Applied Transfer Learning in QNN to classify MNIST images, using methods similar to classical approaches.
- Proposed the Quantum Quantization Aware Training (QQAT) method to enhance the efficiency of QNNs on resource-constrained devices.

**MageCode - Code Analysis System**
- Project submitted for the SVNCKH competition. Consists of three modules: analyzing whether the code was written by a human or machine, checking for code plagiarism if written by a human, and checking for logical errors such as array overflows and division by zero.
- Responsible for the third module, using LLM for error checking and CodeQL from GitHub for static analysis.
- Project is still under development at the 405th floor of the Institute of Information and Communication Technology to become a full product.
- Served as the PM, proposed the idea (with support from professors), managed the team, and designed the main workflows (determining which module the source code should enter first, which tools to use for analysis, how to conduct checks, and identifying the target audience for the product).

### Software Engineer Intern
**Viettel Telecom**  
**Hanoi, Vietnam**  
**08/2023 - 11/2023**

- Analyzed VESS (Viettel Enterprise Support System) developed by the company in Odoo Python and produced technical documentation.
- Implemented various modules using Odoo.