Radek (Sixi)

Work with me

I help teams run open-weight AI models faster on local hardware, replace noisy LLM judges with calibrated evaluation, test AI agents before they ship, and engineer off-grid edge and radio systems. Remote, from Switzerland.

Sixi Lab overview: 1 Infer (sixi-asi) → 2 Evaluate (laya-as-judge) → 3 Red-Team (sixi-scanner) · Field Core at sixi.ai (Rifugio, sigillo, Faro).

1. Local LLM & Hybrid MoE inference on NVIDIA Jetson and DGX Spark

Proof: on Jetson AGX Thor with Qwen3.8-27B, 45.3 tok/s single-stream (3.8× AR), 32 concurrent streams at 170 tok/s in 27 GB instead of 70 GB, and 1.0 s follow-ups at 63k context.

2. Calibrated AI evaluation & secure agent platform architecture

Proof: laya-as-judge v0.4.0 wins 11/11 benchmarks over Gemini Decision 1 across 2,250 questions (Top-1 ECE 0.0234, $0.77 total); 14 years across defence, pharma, and building-automation platforms.

3. AI agent security assessment & CI red-teaming

Proof: 7-tool benchmark and multi-turn taint-relay write-ups — 0.821 stateless precision (1st of 7) and 1.000 multi-turn precision.

4. Off-grid LoRa mesh & embedded field systems

How it starts

A 30-minute call on what the system does, what hardware or data it touches, and what would hurt — followed by a fixed-scope proposal. Email contact@sixi.ai.