IT student (BS Information Technology, Quezon City University, expected June 2028) specializing in privacy-preserving systems and applied cryptography — zero-knowledge proofs, homomorphic encryption, and tamper-evident data architectures, built on top of full-stack development experience.
I like building things that are hard on purpose: systems where the interesting part isn't "does it work" but "does it actually keep the guarantee it claims to."
Currently exploring: extending homomorphic encryption from statistics and credentials into federated machine learning.
Homomorphic encryption pipeline (CKKS via Microsoft SEAL) computing aggregate health statistics — the server never holds a decryption key, ever. Client generates its own keys and is the only party that can decrypt. Real-time stat broadcasting via SignalR, tamper-evident audit logging via Oracle 26ai Blockchain Tables.
C# .NET 8 Microsoft SEAL SignalR Oracle Database
Zero-knowledge scholarship eligibility system — proves a student's income is below a threshold without revealing the income itself, to anyone. Circom + Groth16 circuit, Poseidon hashing, Oracle blockchain-table audit trail.
Circom SnarkJS Groth16 Node.js Oracle Database
Federated learning platform where clients train locally and share only homomorphically-encrypted gradients — the aggregator sums and averages ciphertexts directly and is structurally unable to decrypt anything, verified by deliberately attempting decryption on the aggregator side and confirming it fails. 8-round training runs show consistent, monotonic loss convergence for every client tested. Deployed and validated across independently networked environments (native Windows + WSL2), with a live FastAPI dashboard streaming training progress in real time.
Python PyTorch TenSEAL (CKKS) gRPC Docker FastAPI
ZKP-based medical credential verification system extending the same circuit architecture as LihimSuri into healthcare. Six-project .NET architecture (API, MAUI, Razor Pages admin). Repository private until capstone defense clears.
Delivery route optimization platform — custom Ant Colony Optimization engine solving the Vehicle Routing Problem with real road-network routing (OSRM), zone/location tracking, live analytics, and multi-vehicle auto-dispatch with priority-aware capacity bin-packing.
Python FastAPI PostgreSQL Docker OSRM
Linear regression, logistic regression (gradient descent from scratch), and Mahalanobis-distance anomaly detection — implemented directly on raw linear algebra (Eigen), not library black-boxes.
C++ Eigen
Applied Cryptography: Zero-Knowledge Proofs (Circom, SnarkJS, Groth16), Homomorphic Encryption (CKKS, Microsoft SEAL, TenSEAL)
Languages: Python, C#, JavaScript, PHP, SQL, C++, Java
Backend & ML: FastAPI, ASP.NET Core, .NET MAUI, SignalR, Entity Framework Core, SQLAlchemy, PyTorch, gRPC
Databases: PostgreSQL, Oracle Database (26ai Blockchain Tables), Alembic
Tools: Git, Docker, Postman, JWT Auth, REST APIs