James Raphael Tiovalen

• Created a tower defense strategy video game where the player only has control over a single tower at any point in time.

• Ideated, conceptualized, designed, and developed the game within 2 weeks for the 2025 Pirate Software Game Jam 16.

• Developed a Python program fuzzer for the fuzzing competition during the Fuzzing and Software Security Summer School 2024 at the National University of Singapore.

• The team is placed in the top 5 and the fuzzer performed in the top 30, evaluated on coverage, consistency, and speed.

• Participated in a 1-week online secure coding tournament on the Secure Code Warrior platform.

• Achieved top 3 for the C Embedded language category and top 30 overall (all languages) on the expert leaderboard.

• Obtained 94% accuracy and 86.6% score.

• Participated in a 3-day capture the flag competition. Achieved top 50 out of 400+ teams in the qualifiers.

• Learned about JavaScript deobfuscation, WebAssembly decompilation, and GPU shader reverse engineering.

• Designed and implemented a procedurally generated world using noise functions along with 30+ adjustable parameters from a GUI equipped with live reload. Utilized Three.js and GLSL.

• Achieved up to 120 FPS (V-Sync limited), less than 200 draw calls, and a small RAM/VRAM footprint when rendering millions of vertices and meshes.

• Designed and prototyped a novel, semi-autonomous human-aerial-ground vehicle collaboration system with a seamlessly integrated user interface to assist with the cleaning of high-rise structures with non-planar facades.

• Estimated to reduce the required man-hours by at least 85%, decrease costs by at least 65%, and lower the workplace accident rate once deployed in production.

• Designed and implemented a novel anti-entropy database repair protocol for JSON data from scratch to provide eventual consistency for our custom implementation of Apache Cassandra using Fiber in Go.

• During the course, implemented Lamport's logical clocks, vector clocks, bully election algorithm, Ricart-Agrawala algorithm, voting mutex protocol, centralized lock server, and Ivy, a fault-tolerant distributed shared memory system. Performed qualitative analysis of the various algorithms… Show more

• Designed and implemented a novel anti-entropy database repair protocol for JSON data from scratch to provide eventual consistency for our custom implementation of Apache Cassandra using Fiber in Go.

• During the course, implemented Lamport's logical clocks, vector clocks, bully election algorithm, Ricart-Agrawala algorithm, voting mutex protocol, centralized lock server, and Ivy, a fault-tolerant distributed shared memory system. Performed qualitative analysis of the various algorithms to measure and compare their performance and reliability. Show less

• Implemented and evaluated a ShallowCNN model to classify synthetic speech via its MFCC and LFCC features using the WaveFake dataset in PyTorch.

• Obtained 94% accuracy and F1 score with an equal error rate of 0.09.

• Designed and implemented a secure and fault-tolerant fluid distribution system to maximize availability and minimize cost. Won the best course project voting competition.

• Utilized C, C++, MQTT, TLS, ESP32, HX711, Socket.IO, JavaScript, MongoDB, and Docker.

• Designed and implemented an original RSA simple power analysis CTF challenge for the Cybersecurity course.

• Solved several cryptography-related challenges during the CTF designed by other teams and wrote a comprehensive write-up.

• During the course, re-implemented the permutation box of the PRESENT-80 block cipher using bit de-interleaving to increase performance.

• Developed a sequence labelling machine learning model using Hidden Markov Model (HMM) and unidirectional Long Short-Term Memory (LSTM) to tag tweet datasets with the IOB-sentiment format. Utilized NumPy and PyTorch.

• Achieved 0.59 for entity F-score and 0.46 for sentiment F-score.

• Implemented 3 ACK-based attacks and their respective defenses based on misbehaving TCP receiver concepts against TCP congestion control and pinpointed optimal parameter values for each attack type for various network topologies in Python using Scapy and Mininet.

• Achieved Runner-Up in the best course project voting competition.

• Developed a simple custom database management system from scratch, with features such as data storage, common query processing operators, locking-based transaction management and concurrency control, and B+ Tree indexing for efficient lookups and range scans. Utilized Java and Ant.

• Developed an SUTD Outlook mail classifier/organizer, which consists of a one-click executable binary file that automatically creates Outlook folders and active server-side rules.

• Utilized C# and Microsoft Outlook Object Library.

• Developed a Slack Bot in Python to streamline and automate the judging process for SUTD’s What The Hack hackathon. Utilized FastAPI for speedy asynchronous service, SQLAlchemy ORM for secure database management, and Cloud Firestore for user-bot conversation state management.

• Ensured a smooth operation for 4 judges to tabulate and collate scores for 200+ participants in 40 groups.

• As Technical Director, headed the Automation Team in developing automation tools such as an… Show more

• Developed a Slack Bot in Python to streamline and automate the judging process for SUTD’s What The Hack hackathon. Utilized FastAPI for speedy asynchronous service, SQLAlchemy ORM for secure database management, and Cloud Firestore for user-bot conversation state management.

• Ensured a smooth operation for 4 judges to tabulate and collate scores for 200+ participants in 40 groups.

• As Technical Director, headed the Automation Team in developing automation tools such as an automated form-email workflow and a backend dashboard for What The Hack’s Organizing Committee. Show less

• Developed a custom FTPS implementation with the client-server paradigm, equipped with a three-way handshake authentication protocol resistant to MITM, as well as RSA and AES confidentiality protocols. Achieved second runner-up in the final competition. Utilized Java, AWT, and Swing.

• Developed a custom Unix shell with basic commands and functionalities in C.

• Led a team of 5 to develop an Android mobile application for indoor tracking of assets. Implemented a custom feed-forward convolutional neural network trained with Wi-Fi RSSI information. Utilized Java, ND4J, and Deeplearning4j.

• Developed a RESTful backend API for an online game called Overdue! for SUTD Open House 2021 to manage the leaderboard, scores, and materials. Also developed unit and integration tests for the API to ensure functional correctness, which are integrated using Codecov, GitHub Actions, and Docker for CI/CD.

• Maintained the backend service for 100+ unique players.

• Utilized Rust, Actix Web, and PostgreSQL.

• Conducted a short study of teammate retention rate between 2 major courses in SUTD. Project group compositions were compared by using graph matching algorithms to compute the graph edit distance, which was then normalized to obtain a final similarity percentage.

• Utilized Python, Selenium, Scrapy, NetworkX, and GMatch4py.

• Leading a project team in building a Stanford Doggo with a stretch goal of implementing autonomous navigation for the Doggo.

• Developing a custom software stack for the robot by improving the original project codebase and integrating ROS into the navigation stack.

• Developed a software-based method to monitor attention rate in virtual classrooms by using Zoom’s livestream API, gaze tracking, head pose estimation and sentiment analysis.

• Developed a Visual Studio Code Extension for the 50.002 Computation Structures course module in SUTD with rich language support for JSim, BSim, and TMSim, 3 custom tools/languages originally developed by MIT. This allows fellow coursemates to have a more comfortable and convenient experience while developing using the aforementioned tools.

• Extension has 900+ installs so far.

• Utilized TypeScript, JavaScript, and regular expressions. Extension is deployed via GitHub Actions… Show more

• Developed a Visual Studio Code Extension for the 50.002 Computation Structures course module in SUTD with rich language support for JSim, BSim, and TMSim, 3 custom tools/languages originally developed by MIT. This allows fellow coursemates to have a more comfortable and convenient experience while developing using the aforementioned tools.

• Extension has 900+ installs so far.

• Utilized TypeScript, JavaScript, and regular expressions. Extension is deployed via GitHub Actions and Microsoft Azure.

• Still maintained until today, although with sparse updates provided due to lack of free time. Show less

• Developed a one-stop website for the incoming SUTD Freshmores (Class of 2024) as part of the DiscoverSUTD programme. Utilized HTML, CSS and JavaScript to design a beautiful and simple website to embed all the information needed by the Freshmores to have a meaningful introductory 3-weeks in SUTD.

• Developed a website for SUTD Orientation 2020. Utilized Vue.js framework for its relatively small footprint and Typescript for static typing.

• Developed a Telegram Bot in Python with miscellaneous commands for my SUTD Freshmore Class. Utilized MongoDB Atlas for database management and Microsoft Azure for cloud deployment.

• Coordinated a team of 4 in studying and implementing the applications of V2X devices in real-life vehicles.

• Developed a Telegram Bot in Python for SUTD Hostel Hunt. Utilized Cloud Firestore for database management and Heroku for cloud deployment.

• Developed the landing page for OpenSUTD, an open-source movement dedicated to build a community in SUTD that embraces open sharing and collaboration. Utilized HTML, CSS and JavaScript to achieve a clean and elegant look for the webpage.

• Developed a Telegram Bot in Python for The Spread, a cafe/food bar in NUS Business School, with order and payment capabilities. Utilized PostgreSQL for database management and Heroku for cloud deployment.

• Led a team of 10 in building a working 7kg Linorobot with dimensions 300x215x102mm, equipped with a ROS autonomous navigation stack, teleoperation and SLAM.

• Took down and maintained detailed professional documentation on GitHub.

• Participated in a 2-day cybersecurity workshop and penetration-testing competition.

• Learned about network enumeration, SQL injection, and OWASP web application vulnerabilities.

• Managed to be in the top 10 out of 50+ groups (Team //TODO).

• Designed a solar thermophotovoltaic cell prototype as a proof of concept.

• Increased the efficiency and power output of a solar PV cell by about 15% by retrofitting thermoelectric cells to the cell’s posterior.

• Assembled a weather station as a team of 3 from the provided components and wrote Arduino code for data collection.

• Obtained 12th place in terms of accuracy of the data collection of weather conditions around the venue.