Web Audio Tools
Browser-based audio apps, AudioWorklet processors, real-time DSP, WebAssembly audio ports.
Portfolio Overview
Share this page with stakeholders or save it for reference: joellof.com/portfolio
Joel Löf — Freelance Audio Software Developer
Section titled “Joel Löf — Freelance Audio Software Developer”I build custom audio software for the web, desktop, and mobile — from prototype to production. Specialising in the intersection of audio domain expertise and modern software engineering.
Based in: Gothenburg, Sweden (CET) · Works worldwide remotely
Contact: joel@joellof.com · linkedin.com/in/jadujoel
What I build
Section titled “What I build”Audio Plugins
VST3, CLAP, AU plugins in C++ and Rust. From DSP algorithm to shipped product.
ML Audio
Source separation, classification, enhancement — machine learning applied to audio.
Audio Infrastructure
Plugin hosts, sound managers, real-time streaming, codec optimisation.
Service packages
Section titled “Service packages”| Package | Description | Starting from |
|---|---|---|
| Audio Web Experience | Interactive audio for artist/brand websites | €3,000 |
| Prototype Sprint | Idea → working demo in 2 weeks | €5,000 |
| Custom Plugin Development | VST3/CLAP/AU from DSP to shipped product | €10,000 |
| WebAssembly Audio Port | Bring native DSP to the browser | €5,000 |
Selected work
Section titled “Selected work”VST Host — Rust systems programming
Section titled “VST Host — Rust systems programming”A production-grade VST3 plugin host with process-per-plugin sandboxing, DAG-based routing, and crash recovery. 1,400+ tests. Demonstrates deep systems programming from COM interop to real-time audio.
Compressor Plugin — C++ DSP
Section titled “Compressor Plugin — C++ DSP”A complete audio dynamics plugin with signal analysis, testing methodology, and technical documentation. Demonstrates DSP algorithm design and professional C++ audio development.
Sidechain Compressor — Web Audio
Section titled “Sidechain Compressor — Web Audio”A real-time sidechain compressor running as an AudioWorklet in the browser. Demonstrates Web Audio API expertise and browser-based real-time DSP.
Music Source Separation — ML audio
Section titled “Music Source Separation — ML audio”Separating vocals from backtracks using a UNet neural network trained on cloud GPUs. Demonstrates ML-powered audio processing with a web interface.
Klotter — Client project
Section titled “Klotter — Client project”A music arranger’s portfolio website with custom audio playback, image galleries, and responsive design. Delivered as a complete white-label website.
WASM AudioWorklet — Rust → Browser
Section titled “WASM AudioWorklet — Rust → Browser”Rust DSP code compiled to WebAssembly and running in a browser AudioWorklet. Demonstrates the full pipeline from native code to browser-based real-time audio.
Background
Section titled “Background”| Period | Role | Relevance |
|---|---|---|
| 2021–present | Audio Software Developer (Evolution Gaming) | Game audio middleware, real-time DSP, TypeScript/Rust/C++ |
| 2019–2021 | Broadcast Engineer (Swedish Radio) | Live radio, codec optimisation, SIP-based remote audio |
| 2014–2019 | Touring Playback Tech | Live audio — international tours across Europe and America |
| 2011–2014 | Audio Engineering Degree (LTU) | Signal processing, acoustics, studio engineering |
Technologies
Section titled “Technologies”Languages: TypeScript · Rust · C++ · Python
Audio: VST3 · CLAP · AudioWorklet · Web Audio API · JUCE · AVAudioEngine
Web: Astro · React · WebAssembly · WebGPU · WebRTC
Infrastructure: Bun · Docker · AWS · Playwright · Git · Linux
How I work
Section titled “How I work”- Discovery call — Free, 30 minutes, no obligation
- Proposal — Clear scope, timeline, fixed price
- Build — Short iterations with regular check-ins
- Deliver — Production-ready code with documentation
- Support — Follow-up questions and adjustments included
Next step
Section titled “Next step”Ready to discuss a project?
Email: joel@joellof.com
Schedule a call: Reply to my email and we’ll find a time that works.