Rust cores for native apps
I move performance- and safety-critical logic into a memory-safe Rust core, bridged to Swift with UniFFI and shared across macOS and iPadOS — one core, two platforms, fewer crashes.
Available for consulting — Rust & native-app engineering
Andreas Müller — I build native apps and the tools that ship them.
I help teams ship native macOS & iPadOS apps their users can trust — built on memory-safe Rust cores (bridged with UniFFI) — plus the PostgreSQL, SSH and cargo/CI tooling that keeps releases fast and safe.
On GitHub since 2010
Published on crates.io
Rust · Swift · TypeScript · Java
Native macOS & iPadOS
Services
How I help
PostgreSQL & SSH tooling
I design and build database and remote-access tooling — transactional-safe DDL, ERDs, SFTP and monitoring — so your team can work against production data safely.
Rust CI & developer tooling
I ship cargo and CI tools that catch risky changes before they merge: dependency-impact gating, diff risk scoring and spec-drift detection.
Featured
Selected work
pgAgentFlagship
A native macOS & iPadOS workspace for PostgreSQL & SSH — a routine editor that out-engineers the big IDEs, transactional-safe DDL, an ERD, dual-pane SFTP and on-device AI.
SwiftUI + AppKitRust coreUniFFI
agent-ssh
Native macOS & iPadOS SSH workspace — terminal, SFTP, PostgreSQL, monitoring and network tools over a memory-safe Rust core bridged to Swift.
SwiftUISwiftTermRust
ssh-commander-core
The async Rust domain layer behind the apps — SSH, SFTP, FTP/FTPS, PostgreSQL and connection management, published to crates.io.
Rustasynccrates.io
r-shell
A lightweight, open-source SSH/SFTP/FTP client in Rust & Tauri 2 — split terminals, SFTP, GPU monitoring. ~34 MB RAM, installer under 10 MB.
RustTauri 2cross-platform
cargo-impact
Dependency-impact analysis for Rust — SARIF code-scanning and sticky PR comments to gate risky changes, with a ready-made GitHub Action.
RustGitHub ActionSARIF
cargo · CI tooling
A growing set of tools for safer, AI-assisted Rust development — diff risk scoring, spec-drift detection, build context, and more.
More projects
Also on GitHub
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Process
What working with me looks like
Scope
We start with a short call or email thread. You get a clear proposal — goals, milestones and a fixed first deliverable — before any commitment.
Ship
I work in small, demoable increments with direct communication — no project-manager relay. You see working software every week, not a report.
Handover
Code arrives documented and tested, with CI in place. Your team can own it from day one — and I stay available afterwards.
FAQ
Questions, answered
Are you available for consulting?
Yes — I take on selected Rust and native-app engineering engagements. The fastest way to reach me is email.
What does a typical engagement look like?
Most projects start with a small, fixed-scope first milestone — a prototype, an audit or one shippable feature — so you can judge the work before committing further. I work remotely, communicate directly and bill transparently.
Can you work with an existing codebase and team?
Yes — most of my work happens inside existing products: introducing a Rust core step by step, hardening PostgreSQL layers, or adding CI guardrails without disrupting your team's flow.
What do you build?
Native macOS and iPadOS apps over memory-safe Rust cores, deep PostgreSQL and SSH tooling, and cargo/CI developer tools.
Which languages and platforms do you work with?
Primarily Rust, Swift, TypeScript and Java — targeting macOS, iPadOS and cross-platform desktop via Tauri.
Where are you based?
At Lake Constance in southern Germany, working with teams remotely.
Contact
Have a project in mind?
Tell me what you're building and where it hurts — a rough sketch is enough. You'll get an honest assessment of whether I'm the right fit, and a concrete first step if I am.