Stockholm · Estonia · Remote

Mikael Rinne —
builder,
who ships.

1st Founding Engineer at Ivy, building the framework that unifies C# front-end and back-end for LLM code generation. Founder & CEO of SpaceCorps, a 3D MMO RPG that runs in your browser.

Background in machine learning, chemistry and physics. Published first-author research with CERN collaborators. Six years of shipping — from Fortran simulation code to Rust runtimes to .NET AI platforms.

37,356Contributions since 2023
11,092Commits in top projects
164Repositories touched
672Stars on shipped work
3Years of history shown
01 / TOP PROJECTS

What I've actually been building

Ranked by commit volume across three years of git history — public repos, private repos and organisation work combined. Not a wishlist; this is where the commits went. Everything public lives on my GitHub, and the org work under Ivy-Interactive and SpaceCorps.

Ivy-Interactive/Ivy-Framework

The ultimate framework for building internal tools with LLM code generation — front-end and back-end unified into a single C# codebase.

Founding engineer and top contributor. Own the core codebase, product engineering and the AI code-generation model that turns prompts into working C# apps.

3,586 commits★ 437C#2025 – now
Ivy-Interactive/Ivy-Tendril

What replaces your IDE in an agentic era — a developer tool built for when agents write 99% of the code and your job is knowing what good looks like.

Lead engineer since the first commit in April 2026: design, implementation and the agent orchestration layer.

2,128 commits★ 203C#2026
Ivy-Interactive/Ivy-Tendril-V2

Work-in-progress upgrade of Tendril: a TypeScript and Rust monorepo of apps, packages, crates and promptwares. The repo is temporary and will be removed once the work lands in Ivy-Tendril.

Lead engineer of the rewrite.

1,727 commits★ 1TypeScript2026
rorychatt/SpaceCorps2

WebGL-based 3D MMO RPG that runs in the browser — client and server. The project that became a company.

Founder & CEO. Spotted the gap for an open-source browser MMO, built the prototype solo, then recruited and led an international team of six.

521 commits★ 1TypeScript2023 – 2024
SpaceCorps/SpaceCorps-Front

The production front-end for SpaceCorps — three.js/WebGL rendering, real-time multiplayer state, and the full game client shell.

Architected the rendering and networking layers, and ran the team delivering toward the 2027 launch.

462 commits★ 1TypeScript2024 – 2025
SpaceCorps/GrowthHack

Growth and distribution tooling built at SpaceCorps — 424 commits in three months.

Built end to end, from data pipeline through to the operator-facing UI.

429 commitsTypeScript2026
Ivy-Interactive/Rusty-Framework

Build full-stack web applications in pure Rust — a direct port of Ivy-Framework to a systems language.

Ported the framework's architecture into Rust to test how far the single-language full-stack idea travels outside .NET.

396 commits★ 3Rust2026
rorychatt/rustmc-server

A multi-threaded Minecraft server written in Rust with Paper plugin compatibility.

Side project turned performance study: concurrency, protocol implementation, and binary compatibility with an existing plugin ecosystem.

385 commitsRust2026
Ivy-Interactive/Ivy-Examples

Community-created full-stack C# application demos built on Ivy-Framework.

Curate and author the reference applications that show developers what the framework can do.

365 commits★ 12C#2025 – 2026
rorychatt/Ivy-Command-Center

Permission-based access control for Ivy apps.

Designed and shipped the authorization layer — roles, policies and per-app permission scoping.

316 commitsC#2026
DFlats/timup.pro

Production .NET web platform shipped with a team during the SALT full-stack programme.

Team build under mob-programming and TDD discipline — ASP.NET, EF Core, CI/CD, deployed live.

259 commits★ 1C#2024
rorychatt/KeepIn

Inventory, messaging and handling system for e-commerce businesses, with 3D storage visualisation.

Full-stack build: C# API, React front-end, and a WebGL view of physical warehouse space.

179 commits★ 1C#2024
AndKyr/GETELEC

General Tool for Electron Emission Calculations — computing emission current and Nottingham-effect heat, used in collaboration with CERN.

Built the online interface bridging theoretical and experimental physics. Basis of my first-author IEEE IVNC 2023 paper.

174 commits★ 9Fortran2022 – 2023
SpaceCorps/open-apple-models

Real tool calling for Apple's on-device Foundation Models: NPC dialogue, AI decisions and content generation for games on iOS, iPadOS, macOS and visionOS 27, with no API keys or server costs.

In our tests Apple's own fm serve returned 0 tool calls in 54 requests, so I built per-step tool steering, a Swift package, the oam CLI, an OpenAI-compatible server and a JSON-RPC protocol with a C ABI for game engines. Pre-release: no tagged release yet.

29 commitsSwift2026
SpaceCorps/open-android-models

The Android sibling on Gemini Nano via ML Kit's GenAI Prompt API. Same concepts and same JSON-RPC protocol, so a game engine can inject either backend per platform.

Gemini Nano has no native tool calling yet, so I built a validated step-envelope tool loop in Kotlin, plus a JNI entry point for native engines. Pre-release: tested on the JVM and against Apple's model as a proxy, not yet on a Gemini Nano device.

35 commitsKotlin2026
SpaceCorps/DiskLens

High-performance native disk space visualizer and file explorer in Rust. Dual-mode terminal CLI and desktop GUI with real-time percentage fill gauges.

Built an ultra-fast parallel multi-core traversal engine with Rayon and statvfs (<150ms scans), custom ASCII bar gauges, and an egui desktop app.

4 commitsRust2026
SpaceCorps/open-browser

Agentic browser automation platform: Rust backend daemon, desktop app, and web UI that fans out open-agents to drive browser workflows. Every action is backed by a CLI command.

Architected the multi-agent browser runner combining native Rust service infrastructure, Playwright session steering, and token-efficient DOM serialization.

2 commitsRust2026
SpaceCorps/open-agents

CLI-first autonomous coding agent runner: dynamic LLM provider selection, multi-step tool execution, and self-learning project memory across development sessions.

Engineered the core agent execution loop and memory vault integration in Rust, enabling coding agents to maintain persistent understanding of codebases.

3 commitsRust2026
SpaceCorps/open-apply

CLI for running a job search with an AI agent: finds postings in public feeds, prepares materials per job, records every application and tracks employer replies. YAML or JSON output, stable exit codes, SQLite, MIT.

Designed and built with Claude Code: guardrails against low-quality mass applying (daily cap, per-company cooldown), prompt-injection-aware handling of job posts and emails, a Claude Code skill, and a Vite+ docs site. Pre-release: v0.1.0 with binaries for five platforms.

11 commits★ 1Rust2026
SpaceCorps/Space3d-Molecular

Molecular dynamics and electron-emission physics on Space3d: public API documentation, input formats, and interactive 3D WebGPU molecule viewer (molviewer).

Developed the public docs, data specs, and WebGPU renderer for quantum electron emission and molecular simulation.

4 commitsRust2026
SpaceCorps/play

Cross-platform client distribution and download portal for SpaceCorps 2027 (space MMO RPG) across macOS (.dmg), Windows (.zip), and Linux (.AppImage/.tar.gz).

Automated packaging pipeline, headless verification smoke tests, and release distribution on GitHub Pages and Sliplane.

77 commits★ 2Rust2026
02 / GIT ACTIVITY

Three years, day by day

Every contribution from January 2023 to today, pulled from the GitHub GraphQL API and baked into this page at build time by a small Python script. Public and private, commits, PRs, reviews and issues.

Less More

Where the commits landed, by language

Weighted by commit count in each repository's primary language.

03 / CHRONOLOGY

Everything, newest first

Today at the top, running back to 2022. Every repository with eight or more commits, placed in the year work on it started. Career milestones are marked in line, and bars are scaled to commit count.

202649 repos started · 7,104 commits
Ivy-Interactive/Ivy-TendrilC#
2,007
Ivy-Interactive/Ivy-Tendril-V2TypeScript
1,709
SpaceCorps/obopRust
561
SpaceCorps/GrowthHackTypeScript
424
Ivy-Interactive/Rusty-FrameworkTypeScript
389
rorychatt/rustmc-serverRust
382
rorychatt/Ivy-Command-CenterC#
316
SpaceCorps/storybookTypeScript
241
rorychatt/gitpubRust
130
SpaceCorps/open-glassTypeScript
118
SpaceCorps/open-accounting-swedenRust
78
SpaceCorps/Sliplane-CliRust
69
Ivy-Interactive/Ivy.NativeJsonDiffC#
68
Ivy-Interactive/Ivy.Docs.CompilerRust
66
SpaceCorps/playHTML
64
SpaceCorps/brainwaresRust
41
rorychatt/AIOSRust
36
SpaceCorps/open-android-modelsKotlin
35
Ivy-Interactive/RustinoRust
32
SpaceCorps/spacecorps.github.ioHTML
31
Ivy-Interactive/Pr-Cost-CalculatorTypeScript
29
SpaceCorps/open-apple-modelsSwift
29
SpaceCorps/web-demo-generatorTypeScript
26
rorychatt/Rusty-Framework
12
Ivy-Interactive/edit-counterRust
12
SpaceCorps/open-applyRust
11
SpaceCorps/Samsung-Artmode-CliRust
9
SpaceCorps/Notify-CliRust
9
SpaceCorps/namecheap-cliRust
9
Ivy-Interactive/Ivy-Nuget-StatsC#
9
SpaceCorps/Storage-CliRust
8
SpaceCorps/Tic-CliRust
8
SpaceCorps/Twitter-CliRust
8
SpaceCorps/Stackoverflow-CliRust
8
SpaceCorps/Reddit-CliRust
8
SpaceCorps/Youtube-CliRust
8
SpaceCorps/TikTok-CliRust
8
SpaceCorps/Bugsink-CliRust
8
SpaceCorps/Github-Issue-ImporterRust
8
SpaceCorps/Gmail-CliRust
8
SpaceCorps/Loopia-CliRust
8
SpaceCorps/Heyreach-CliRust
8
SpaceCorps/news
8
SpaceCorps/Cloudflare-CliRust
8
SpaceCorps/Exa-CliRust
8
SpaceCorps/Producthunt-CliRust
8
SpaceCorps/Linkedin-CliRust
8
SpaceCorps/Spaceship-CliRust
8
SpaceCorps/Firecrawl-CliRust
8
202513 repos started · 4,372 commits
milestoneBecame 1st Founding Engineer at Ivy
Ivy-Interactive/Ivy-FrameworkC#2025–2026
3,636
Ivy-Interactive/Ivy-ExamplesC#2025–2026
366
SpaceCorps/webTypeScript
50
Ivy-Interactive/Ivy-Open-RaiseC#
42
Ivy-Interactive/toroid-wireframe-cloudsTypeScript
30
SpaceCorps/gilectTypeScript2025–2026
24
rorychatt/BookNotFoundTypeScript
22
SpaceCorps/open-tradingC#
21
Ivy-Interactive/Ivy-TemplatesC#2025–2026
19
Ivy-Interactive/Ivy-Design-SystemTypeScript
8
SpaceCorps/neon-serenityJavaScript
8
202418 repos started · 1,597 commits
milestoneCompleted SALT full-stack C# programme
milestoneJoined Scania as Solutions Architect
SpaceCorps/SpaceCorps-FrontTypeScript2024–2025
462
DFlats/timup.proC#
262
rorychatt/KeepInC#
179
rorychatt/angular-cookbook-exampleTypeScript
162
89
rorychatt/estomaniaTypeScript
57
rorychatt/rorycraftShell
56
rorychatt/GunSmithQuestsC#
51
rorychatt/rorychattHTML2024–2026
50
rorychatt/angular-test-appTypeScript
40
rorychatt/estomania-serverTypeScript
40
rorychatt/TackleWikiC#
36
rorychatt/RoryCraft2024-Volume2Shell
34
rorychatt/keepin-apiC#
21
19
rorychatt/address_book_csharpHTML
15
14
rorychatt/SpaceCorps-OnlineHTML
10
20232 repos started · 589 commits
milestoneFounded SpaceCorps Technology OÜ
milestoneFirst-author paper at IEEE IVNC 2023
milestoneJoined Nixor EE AS
rorychatt/SpaceCorps2TypeScript2023–2024
521
sbcarceles13/GETELEC_legacyFortran
68
2022before the git history shown here
milestoneJoined University of Tartu Institute of Technology as engineer & researcher
04 / EXPERIENCE

Where I've worked

2025 — nowStockholm, Sweden
On-site / Remote

1st Founding Engineer

A .NET AI startup redefining how people build business apps inside the Microsoft ecosystem — the ease and fun of Lovable with the full power of C#.

I own the codebase, product engineering, AI modelling and project planning, and I lead the development team. Ivy-Framework is at 437 stars and Ivy-Tendril at 203; between them I've written 5,700+ commits. We're currently raising a $5M seed round.

2023 — nowEurope, Remote

Founder & CEO / CTO

Identified a gap in the market for a 3D MMO RPG open-source browser game, and founded a company to build it.

Recruited and manage an international team of six — designers and full-stack developers. Built the original WebGL prototype myself and still architect the rendering and networking layers. Coming 2027.

In 2026 I open-sourced our on-device game AI under MIT: open-apple-models on Apple's Foundation Models and open-android-models on Gemini Nano. NPCs talk, call tools and make decisions on the player's device, and both libraries speak one JSON-RPC protocol, so an engine can plug in either backend per platform. Both libraries are pre-release, and the Android one has not yet run on a Gemini Nano device.

2024 — 2025Stockholm, Sweden
On-site / Remote

Solutions Architect / Senior Full-stack Engineer

Modernised the internal platform used to deliver trucks, improving user experience and boosting sales.

Proposed and implemented new workflows and algorithms as part of the platform's migration to AWS.

2023 — 2024Tallinn, Estonia
On-site / Remote

Full-stack Software Engineer

Engineered and deployed tailored SaaS solutions for Estonian businesses, enhancing POS systems for major distributors including Coop, Stockmann Group and Selver.

Improved efficiency and reliability through custom Odoo modules and robust payment integrations, and resolved critical transaction bugs affecting retail across Estonia.

2019 — 2024Tallinn, Estonia
Remote

Private Tutor & Teacher, Natural Sciences

Five years of one-on-one, group and remote tutoring in the natural sciences. Guided a large number of students to markedly better academic results.

Teaching is still the part I love most — it's why mentoring is central to how I run an engineering team.

05 / EDUCATION & RESEARCH

How I got here

Full-stack C# Developer

Intensive three-month full-stack programme built around TDD, mob programming and applied learning. Solid foundation in C#, ASP.NET MVC, Blazor, .NET Core, Entity Framework Core, .NET Framework and MSSQL.

Also covered the modern front-end stack — React, Tailwind, TypeScript — plus SOLID design principles, Agile methodologies, CI/CD and team leadership.

Chemistry Studies

University of Tartu · 2019 — 2024

Chemistry that turned into computation: machine learning and physics alongside rigorous coursework in C, Assembler and Java.

Built my own ML models for molecular dynamics using Gaussian approximations, Monte-Carlo simulation, neural networks and extreme gradient boosting. Used COMSOL, Modelica and Fortran to simulate complex physical processes and optimise experimental design.

An Online Tool for Thermal-Field Emission Calculations from Metal and Semiconducting Emitters

IEEE IVNC 2023 · first author

M. Rinne, S. Barranco Cárceles, V. Zadin, A. Mavalankar, I. Underwood, A. Kyritsakis — 36th International Vacuum Nanoelectronics Conference.

doi:10.1109/IVNC57695.2023.10188950 · GETELEC on GitHub

Languages

Human and otherwise

English — native · Estonian — fluent · Russian — fluent · C# — native.

Estonian by origin, based in Stockholm, working across European teams and time zones.

06 / TOOLKIT

The stack

Highlighted items are what the last three years of commits actually ran on.

Languages

C#TypeScript RustJavaScript PythonSQL GoWGSL / GLSLPowerShell / Bash C / C++Java FortranAssembler MATLABDart SwiftKotlin

AI Engineering

RAG pipelinesEmbeddings & vector search Agentic toolingMCP Anthropic APIOpenAI API Microsoft.Extensions.AISemantic Kernel Qdrant / pgvectorStructured output & tool calling Prompt & eval harnessesLLM code generation On-device models (Apple Foundation Models, Gemini Nano)

Backend

.NET 10ASP.NET MVC / WebAPI Entity Framework CoreSignalR PostgreSQLDapper .NET AspireNode.js FastAPIREST / HTTP / JSON / XML SQL ServerMySQL / HeidiSQL RedisANTLR

Rust & Systems

Tokio asyncserde Cargo workspacesaxum tracingcrossbeam criterion benchmarksproptest redb / bincodeTauri Binary protocolsLock-free concurrency

Frontend

React 19Tailwind Radix UI / shadcnVite WebGL / three.jsWebGPU TanStackCodeMirror EChartsFramer Motion Apache ArrowAngular HTML5 / CSS3DaisyUI

Scientific Computing

Neural networksXGBoost Monte-Carlo simulationGaussian approximations Molecular dynamicsTensorFlow NumPy / SciPyCOMSOL Modelica

Practice & Tooling

TDD / SOLIDCI/CD Git / GitHub ActionsPlaywright DockerxUnit Vitest / JestKubernetes AWS / Azure / GCPMob programming AgileJira / Confluence OdooWindows / Linux

Leadership

Team leadershipMentoring Product engineeringFundraising HiringSolutions architecture Teaching