North-east India

Building AI agents.Locking downeverything else.

I’m Fiozur Rahman, a developer working across AI engineering and cybersecurity — RAG systems, Android coding agents, encryption tools and clean, self-hosted software.

See the work ↓

Fiozur Rahman is cooooool — Portrait@fiozxr

Development focus

Four things I keep coming back to.

i.
AI Engineering
Agent environments, RAG systems, LLM inference and coding agents on Android.
ii.
Cybersecurity & Privacy
Encryption tools, zero-knowledge apps and security hardening.
iii.
Developer Tooling
SQL environments, networking tools and automation.
iv.
Product & Design
Clean interfaces, self-hosted tools and responsive web apps.

Notable contributions

Shipping the unglamorous improvements.

~44%

improvement in async file processing in Documentations.

YourSQL: SQL export optimization, identifier quoting, WebView security hardening, Playwright tests and Cordova packaging.
Nyay AI: A RAG-based digital lawyer.
Open pull requests: Several pending on YourSQL and Documentations.

Selected work

Agents, ciphers and tools that get out of the way.

AI & Agent Development

A RAG-based digital lawyer, and a family of coding agents running on Android.

Security & Privacy

Encryption you can run from a terminal, a vault the server can’t read, and a networking toolkit for Android.

Developer Tools & Apps

Small, sharp tools for working with data and the command line.

Websites & Other

Sites, docs and experiments.

fiozxr.github.io Documentations monochrome — open-source music app FreeDomains — free developer subdomains (isroot.in) nayna-website arjuonlineservice website register — is-a.dev subdomain registry (fork) pentestcode — AI pentesting agent (fork) Petale-Tige GitHub profile README

Contact

Let’s build something secure.

Follow @fiozxr on GitHub ↗ Instagram @fiozxr_ ↗

Building AI agents.Locking downeverything else.

Four things I keep coming back to.

AI Engineering

Cybersecurity & Privacy

Developer Tooling

Product & Design

Shipping the unglamorous improvements.

Agents, ciphers and tools that get out of the way.

Let’s build something secure.