Lead AI Engineer · Writing since 2016

Hi, I'm Sina. I build and train AI systems.

I write about reinforcement learning, transformers, multi-agent systems, and the tools I build along the way.

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NewSep 27, 2026·9 min read

Sabattier: A Batch Photo Editor with On-Device AI

Sabattier is a free batch photo editor for Windows and macOS with auto enhance, masks, portrait retouching and background removal, all on your computer.

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Aug 25, 2026·8 min·Open Source

Mullion FileMan: A Dual-Pane File Manager and a Set of Folder Tools

Mullion FileMan is a C++17 dual-pane terminal file manager. It has twenty folder_* CLI tools that compare and sync folders, and an MCP server for AI agents.

Jul 29, 2026·6 min·Open Source

Redthread: Portable, Git-Backed Memory for AI Coding Agents

Redthread keeps your AI coding agent's memory in a git repo and serves it over MCP, so Claude Code and other agents remember on every machine.

Aug 15, 2024·3 min·Deep RL with Unity 3/3

DDPG on Reacher: Twenty Arms Chasing a Balloon

DDPG solves Unity's Reacher in 101 episodes with twenty arms sharing one replay buffer, and why the noise that failed on Tennis worked here.

Apr 16, 2023·3 min·Deep RL with Unity 2/3

Two DDPG Agents Learning to Play Tennis

Two DDPG agents learn to keep a tennis rally going in Unity. What failed for 20,000 episodes, and the three changes that finally solved it.

Mar 1, 2023·3 min·Deep RL with Unity 1/3

Training a DQN Agent to Collect Bananas in Unity

A DQN agent learns to collect bananas in Unity. Here are the Q-network, the replay buffer, the target network and how it reached +13 in 481 episodes.

Oct 30, 2021·2 min·Learn SSH 3/3

Learn SSH: Config File

Use the ~/.ssh/config file to connect to servers by name, with identity files, multiple hosts, ProxyJump through a jump server, and wildcard patterns.

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