Aleksandr’s Substack

How To Build Self Hosted TTS That Actually Sounds Good

From open weight model to production ready service: Kotlin, Clean Architecture, MCP, and AWS deployment

Feb 23 • Aleksandr Sobolev

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January 2026

The Definitive Guide to Kotlin Coroutines: For developers who use coroutines daily but want to master them.

Structured concurrency, cancellation, exception handling, Flow, and the blind spots that cause production bugs

Jan 25 • Aleksandr Sobolev

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Product Marketing as Software Architecture: A Guide for Technical Founders

The Missing Framework for Getting Users

Jan 18 • Aleksandr Sobolev

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December 2025

Building an Embedding API with Rust, Arm, and EmbeddingGemma on AWS Lambda

Step-by-step guide covering model selection, containerization, ARM64 optimization, and production benchmarks

Dec 18, 2025 • Aleksandr Sobolev

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Mad Rust: The JVM Developer's Journey

Kotlin Developer's Road to Valhalla

Dec 8, 2025 • Aleksandr Sobolev

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November 2025

Autonomous AI Agent Collectives: A Four-Layer Architecture

When one model isn't enough: architecting SLM networks that learn from each other.

Nov 29, 2025 • Aleksandr Sobolev

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