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The Protocol

Why this space? Engineering logs, product development, and field notes from building business-critical software while training for endurance events.

Current Focus: Documenting e-commerce engineering, system integrations, durable jobs, and AI-assisted product development.

Currently Building: Ferrokinetic

Invite-only, deterministic-first training and recovery product combining Polar data, planning and user-approved adaptation.

Explore Project
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Log Entries

Denis carrying heavy iron chains during a Spartan Race
[Spartan][Field Test][Video]// 8/5/2026//1 MIN READ

_FIELD_LOG_001 // Spartan Race Field Test & Video Recap

Testing Ferrokinetic's readiness algorithms under real-world race conditions and obstacle fatigue.

Ferrokinetic Workstation Preview
[Ferrokinetic][Product][Build Log]// 8/1/2026//2 MIN READ

_BUILD_LOG_001 // The Idea: Why I Started Building Ferrokinetic

From Spartan Race training to Notion databases: the origin story of Ferrokinetic and managing cognitive load versus physical endurance.

Fitness telemetry dashboard and code editor at an endurance athlete's workstation
[TypeScript][Polar API][Architecture]// 7/22/2026//2 MIN READ

_Building a Durable Polar AccessLink Import Pipeline

Navigating OAuth 2.0, durable import jobs, idempotency keys, and wearable-data ingestion for Ferrokinetic.

TypeScript service code and product telemetry on a developer workstation
[TypeScript][Bun][Hono]// 7/20/2026//1 MIN READ

_From Prototype to Strict Typing: Rebuilding an AI Prototype in Bun & Hono

How a fast product experiment became a production TypeScript service without discarding the validated product loop.

Developer workstation used for an MDX media implementation guide
[Astro][MDX][Content]// 7/18/2026//2 MIN READ

_Images, YouTube, and Instagram in an MDX post

A working reference post for adding optimized images and responsive social media embeds.

Kettlebell, sports watch, water, and training equipment in a home gym
[Nutrition][Training][Recovery]// 7/16/2026//1 MIN READ

_The L-Citrulline & Beta-Alanine Pre-Workout Stack test

A practical training note about separating useful supplementation from noise in a mixed strength and endurance block.

Developer workstation with code and product telemetry
[Astro][Coolify][Architecture]// 7/12/2026//1 MIN READ

_Why this portfolio no longer has a CMS

Removing the database, admin panel, and application server from a one-person portfolio.

24kg kettlebell and endurance training equipment after a workday
[Training][Recovery][Engineering]// 7/10/2026//1 MIN READ

_Surviving 24kg Kettlebell Swings after a Production Outage

How an incident changes the training decision when cognitive stress is already high.

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