Gabriel Windlin

Bachelor of Science in Computer Science · Winterthur

• Starting Sept 2026; core curriculum includes Algorithms & Data Structures, Analysis, Discrete Mathematics, and Software Engineering fundamentals.

Co-Founder & Backend Engineer (Pre-Seed / MVP) · Zürich

• Co-founded Tokio, an AI-powered brand-compliance platform pairing a native SwiftUI client with a custom backend, currently at MVP stage ahead of incorporation.
• Architected a Rust GraphQL API on Axum and async-graphql, with SQLx/PostgreSQL persistence, JWT session auth backed by Supabase, and tower_governor rate limiting.
• Built the document-ingestion pipeline that turns uploaded brand guidelines into approved, embedded "nodes," and a RAG-based compliance engine that scores submitted copy against those approved nodes.
• Shipped supporting infrastructure: transactional email invites via Resend, workspace/role management, and an AI image-generation endpoint handling long-running (5-minute) requests.

Software Developer · Hinwil

• Designing and building a multi-tool engineering platform from scratch: reusable Python toolkits, a FastAPI backend, and a Next.js/TypeScript frontend, unifying internal engineering tools for the whole company with a background job runner for long-running operations.
• Implemented a tiered authorization system driven by a hot-reloading YAML config, enforced via FastAPI dependencies, fail-closed by design, and surfaced to the frontend so pages and navigation hide themselves for unauthorized users.
• Automated cross-tool workflows previously done by hand, backed by CI/CD and a full test suite, deployed on an Ubuntu VM under systemd.

Computer Infrastructure Team Member · Zürich

• Deployed Rallly, an open-source collaborative scheduling tool, on the association's local cluster using Kubernetes, enabling easier event coordination for the student board.
• Configured container orchestration and networking to ensure reliable, high-availability self-hosted services for the students.
• Collaborated with the infrastructure team to maintain, patch, and monitor on-premise server resources, gaining hands-on experience with bare-metal Linux administration.

Customer Service & Operations · Zürich Area

• Developed strong interpersonal and communication skills by serving a diverse client base in fast-paced environments, ensuring efficient daily operations and conflict resolution.

• Developed a highly efficient single-file TCP connect() port scanner in C, demonstrating deep understanding of POSIX sockets and low-level networking.

• Repurposed a salvaged PC (upgraded RAM) into a Proxmox VE hypervisor host and rebuilt a 3-node k3s cluster (1 control-plane, 2 workers) on Rocky Linux 9 VMs, replacing a prior single-node Surface-based homelab.

• Engineered a comprehensive security toolkit featuring multiple password cracking techniques including Markov Chain probabilistic generation, dictionary attacks, and multi-threaded brute force.

• Built a POSIX-compliant shell in Rust from scratch: a REPL execution loop, command tokenization with single/double-quote and backslash-escape handling, and $PATH resolution for external executables.

• Built a raw-socket packet sniffer in C that captures live TCP and DNS traffic and writes it to a standard .pcap file for analysis in tools like Wireshark.

• Developed a high-performance terminal-based journaling tool in Rust using the Ratatui library for a responsive and keyboard-centric TUI.

• Designed and built a custom low-power e-ink display (LilyGo T5, ESP32-S3) as a shared, app-free communication device, with firmware written in C++ on the Arduino framework.

• Engineered a modular neural network from scratch in pure C, implementing backpropagation and gradient descent without external libraries.