@jcraane

Co-founder and CTO of MoxieMobile - Independent full stack software engineer with a passion for Kotlin and Kotlin multiplatform mobile.

jamiecraane.dev
Joined May 2009
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An interactive 3D cyberpunk apartment, one prompt, two runs: $18 vs $554. Claude Code (Opus 5.5), single HTML file (Three.js): • xhigh: 1h 13m, single agent • max + ultracode: 9h 14m, 40 subagents Is 30× the cost worth it? 👇
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youtu.be/N4wCV55SARA

Cybercity: xhigh vs max + ultracode: is 30× the tokens worth it?...

I always wanted to create an explorable interactive 3D Cyberpunk st...

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Want to know if a local embedding model like Qwen3 embeddings can replace OpenAI's embedding model? Read it here: jamiecraane.dev/2026/14/09/l…

Swapping OpenAI Embeddings for a Local Qwen3 Model

My knowledge base embedded every note with OpenAI's text-embedding-3-small. I added Qwen3-Embedding-8B served by LM Studio as a second, fully local option, without a new table or a re-index. Here is...

jamiecraane.dev
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Nw blogpost about implementing row level security with Kotlin Exposed and Postgres: jamiecraane.dev/2026/09/07/m… #kotlin

Multi-Tenancy With Postgres Row-Level Security in Ktor

How I use Postgres Row-Level Security, a non-owner application role, and a small Kotlin transaction wrapper to guarantee tenant isolation in a production Ktor and Exposed application.

jamiecraane.dev
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A really handy command in Claude which I often use is /resume. Resume lets you select a previous conversation and resume it. Especially handy with the Opus 1M context window.
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The M1 max with 128Gb has arrived! Will post some impressions this week.
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When working extensively with ClaudeCode, it really helps to occasionally optimize the repo for the agent. What do I mean with that? Extracting skills, agents, hooks), make sure claude.md stays small and up to date and point to other sources of information.
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Working with Claude extensively on several projects at once puts the Macbook pro (still an M1 Max) to good use. Now hitting continuously my 64GB. The time for more memory is near!
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Collected my new Model Y AWD in Marine blue today. What a fantastic color on the model Y. #marineblue #tesla #modely
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And another one in the dark (no I am not filling up gas ;))
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#kotlin #ai To better guide the AI assistant or agent in writing code in our large codebase, we introduced the AIGuideline annotation. Read all about it here: jamiecraane.dev/2025/13/10/a…

Bridging Human Intent and AI Code Generation with @AIGuideline

Learn how the @AIGuideline annotation helps AI assistants understand and respect your project's architectural decisions and coding patterns.

jamiecraane.dev
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#intelligencecommunity It is perfectly feasible to create IntelliJ themes solely using AI. Check out this cyberpunk neon dark theme!
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#KotlinServerSide In this post I will explain how to integrate Firebase authentication in a Ktor app with Thymeleaf: jamiecraane.dev/2025/06/12/f… Full sample code included!

Integrating Firebase auth in server side Thymeleaf app

This post, we will look at how to integrate server side Firebase authentication with Ktor and a Thymeleaf application

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#intellij #jetbrains Besides, coding, Jetbrains Junie (jetbrains.com/junie/) is also extremely useful in ask mode for understanding existing codebases.
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Jamie Craane@jcraane15 Jan 2025
Part 2 of my blog series about integrating Firebase authentication in your custom Ktor backend: jamiecraane.dev/2025/01/16/f… #firebase #ktor #kotlin

Integrating Firebase JWT token verification in Ktor - Part 2

This post, we will look at how to integrate your Firebase users in your own application database.

jamiecraane.dev
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#KotlinServerSide
Jamie Craane@jcraane11 Dec 2024
Ever wondered how to verify JWT tokens in Ktor? Read it in part 1 of the series about integrating #firebase with #ktor: jamiecraane.dev/2024/12/11/f…

Integrating Firebase JWT token verification in Ktor - Part 1

This blog post guides you through integrating Firebase JWT token verification in a Ktor server application, enhancing security by leveraging Firebase's authentication capabilities.

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Part 2 of my blog series about integrating Firebase authentication in your custom Ktor backend: jamiecraane.dev/2025/01/16/f… #firebase #ktor #kotlin

Integrating Firebase JWT token verification in Ktor - Part 2

This post, we will look at how to integrate your Firebase users in your own application database.

jamiecraane.dev
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Ever wondered how to verify JWT tokens in Ktor? Read it in part 1 of the series about integrating #firebase with #ktor: jamiecraane.dev/2024/12/11/f…

Integrating Firebase JWT token verification in Ktor - Part 1

This blog post guides you through integrating Firebase JWT token verification in a Ktor server application, enhancing security by leveraging Firebase's authentication capabilities.

jamiecraane.dev
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#IntelliJIDEATips no tabs, multiple tabs in the editor? I am settled on using 2 tabs. This gives me flexibility to move tabs to other editor windows without the editor becoming cluttered.
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