Gustavo Widman // Rust Platform & Distributed Systems
SYSTEMS &
SOFTWARE
Edge/CDN systems, infrastructure security, and reproducible operations in Rust.
01 / About Me
Rust platform engineering for
edge systems, secure infrastructure, and distributed services.
I am a Computer Engineering student at INTELI and a Rust Software Engineer at Azion.
My main work is in Rust platform engineering, distributed systems, and edge/CDN infrastructure. I like building systems that stay fast, predictable, and easy to operate.
I also spend a lot of time on infrastructure security, NixOS, and network design, especially where secure operations and low-level behavior meet.
02 / The Stack
Rust platform & low-level systems
Rust services, networking paths, kernels, memory-aware code, and systems tooling built close to the machine.
Edge, infrastructure & operations
Edge/CDN systems, reproducible NixOS environments, deployment plumbing, and the operational work that keeps services stable.
Infrastructure security
Security engineering, hardened networks, red team work, and the service layers that support secure platforms.
03 / Professional Experience
Azion
Software Engineer II (Rust)
Building Rust systems for edge workloads with an emphasis on throughput, latency, and operational reliability.
Working on CDN internals with the application and security teams, focusing on performance-sensitive paths.
Contributing to distributed computing work where systems behavior and resource efficiency matter.
CamelSec
Technical Lead, Security Infrastructure
Led technical strategy across infrastructure, internal tooling, and security operations for a cybersecurity consultancy.
Ran penetration testing and red team engagements for enterprise clients.
Built reproducible NixOS environments and hardened operational workflows with Home Manager.
Designed secure WireGuard-based networks with redundant staging environments.
MW APP IT Consulting
Software Engineer
Delivered client systems across Python, Node.js, and C# backends with React and TypeScript frontends where needed.
Handled application data layers across MS SQL, MySQL, and SQLite.
Worked across internal tools, line-of-business systems, and e-commerce projects for clients including CESP, Hunter Douglas, and CETESB.
04 / Selected Works
upstreamer
A Rust reverse proxy for edge workloads with Kubernetes service discovery, hot config reload, health checks, and published benchmarks against nginx, HAProxy, Caddy, and Apache.
FerriSync / modernizing rsync
A long-form Rust systems write-up on why rsync is CPU-bound on modern networks and how cache-aware, multi-core delta computation could change that.
NixOS Infrastructure
The NixOS monorepo behind my public and private infrastructure: reproducible hosts, CI, mail, DNS, VPNs, and day-to-day operational tooling.
Rust x86-64 Kernel
A bootable Rust `no_std` kernel with paging, interrupts, memory management, and bare-metal drivers built to understand the platform from the bottom up.
1 Billion Row Challenge
A Rust 1BRC solution built around memory-mapped I/O and parallel processing to push data-heavy workloads under tight CPU budgets.
Cognitive Discord Bot
A Rust bot with long-lived memory, retrieval, and tool-driven behavior for experimenting with stateful agents in production-like conditions.