Welcome

My name is Siarhei Berdachuk.

I'm a seasoned IT professional with over 30 years of experience in software engineering, team leadership, and cutting-edge solution design. I specialize in Java development, AI integration with Spring AI, and high-performance backend systems.

This blog is where I share insights on clean code, test-driven development, scalable architectures, and practical applications of AI in enterprise environments.

Latest Articles

Local AI Code Review with OpenCodeReview, OpenCode, and Qwen3.6-35B-A3B

12-Sept-2026

Local AI Code Review with OpenCodeReview, OpenCode, and Qwen3.6-35B-A3B

A practical, local-first workflow for running deterministic AI code reviews through OpenCodeReview against an OpenAI-compatible Qwen3.6-35B-A3B endpoint.

Qwen3.8-27B-NVFP4 on a 24GB RTX 4090: What a Dense Model Can and Cannot Do

09-Sept-2026

Qwen3.8-27B-NVFP4 on a 24GB RTX 4090: What a Dense Model Can and Cannot Do

Qwen3.8-27B-NVFP4 on RTX 4090 with FreeToken: dense weights fit, but the KV ceiling is ~5.6K tokens — 38/40 qualbench, 51/53 agentbench.

Qwen3.6-35B-A3B on a 16 GB RTX 5060 Ti: Why Context Beats Tok/s for Coding

03-Sept-2026

Qwen3.6-35B-A3B on a 16 GB RTX 5060 Ti: Why Context Beats Tok/s for Coding

Qwen3.6-35B-A3B on a 16 GB RTX 5060 Ti with FreeToken: long-context tuning, FP8 vs NVFP4 throughput and correctness, and real memory requirements.

OpenCode + a Self-Hosted Qwen3.6 Server: Provider Setup and the Chat-Template Fix That Makes Tool Calling Reliable

01-Sept-2026

OpenCode + a Self-Hosted Qwen3.6 Server: Provider Setup and the Chat-Template Fix That Makes Tool Calling Reliable

How to connect OpenCode to a self-hosted Qwen3.6 server, and why a community chat-template fix is required before its tool calling can be trusted.