I build backend systems and the security beneath them. Currently working at the intersection of Python & C++ engineering, applied cryptography, and vulnerability research — designing production-grade RAG infrastructure, deploying PKI for secure communications, and discovering cryptographic weaknesses in shipped software.
I'm a software engineer with a cybersecurity specialization from the Jerusalem College of Technology. My work sits in the overlap between writing production backend systems and understanding deeply how to break them.
Day to day, I build Python automation and FastAPI services, deploy cryptographic key infrastructure (PKI) for encrypted communication with external entities, and research binary and protocol-level behavior. Most recently I designed a full Retrieval-Augmented Generation platform on FastAPI / PostgreSQL + pgvector / Kafka / Elasticsearch, and discovered a cryptographic key-derivation weakness in a production Chrome extension — currently in CVE coordination with the vendor.
"The best defenders have broken things. The best builders have defended them."
I care about writing clean, auditable code, making secure-by-default the path of least resistance, and finding the elegant read on a system — whether that system is a C++ binary, a packet capture, or a vector database under load.
Full Retrieval-Augmented Generation system enabling semantic search and LLM-grounded Q&A over large document corpora. Layered FastAPI backend (Controller / Service / Repository), async PDF ingestion via Kafka, embeddings stored in pgvector, hybrid retrieval through Elasticsearch. Handles 1,000+ page uploads without blocking the API.
Compiled-binary teardown with IDA Pro and x64dbg, reconstructing program logic from unlabeled x86 / x64 assembly. Implementations of Diffie–Hellman, RSA, and block / stream ciphers written from scratch in C and Python to understand the primitives by hand.
Deep workshop covering modern C++ mechanics — object lifecycles, RAII memory management, polymorphism, exception safety, and the data structures & algorithms that underpin performance-critical code.
Open to roles in software engineering, backend infrastructure, and security research. Vulnerability research collaborations, freelance audits, and interesting conversations equally welcome.
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