Curriculum vitae

Eric Jingryd

Rust Developer · Gothenburg, Sweden

tidynest@proton.me GitHub GitLab LinkedIn Portfolio
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Summary

Rust developer focused on security tooling, system hardening, and Linux infrastructure. Career changer: fifteen years leading operations and teams before completing Systems Sciences coursework at the University of Gothenburg (2023-2025) and committing to software full-time. I build secure, well-structured systems with strong test coverage - most projects ship with 100+ tests and reproducible multi-distribution builds.

Skills

Technical Skills

Programming Languages

Rust (Primary) TypeScript Python JavaScript Bash C/C++ (C23, learning) C# SQL

Frameworks & Tools

Actix-web Tokio PostgreSQL SQLx MySQL SQLite Redis HTMX Tauri Leptos Slint GTK4 Bun SolidJS Docker Git JetBrains IDEs

Security

System Hardening Penetration Testing OSINT OWASP Standards Cryptography (Argon2id, Ed25519) JWT Authentication & RBAC MCP-driven AI Pentest Tooling

Compliance

GDPR (applied: privacy notice, retention policy, data-subject rights) CIS Benchmarks (as hardening baselines)

DevOps & Infrastructure

Linux (Arch, Debian, Fedora, RHEL) Hyprland systemd Docker Compose Virtualisation (VMware / VirtualBox / QEMU/KVM) VPN CI/CD (GitHub Actions) nginx + Let's Encrypt

Packaging

PKGBUILD (AUR) RPM .spec Debian changelog

AI & Machine Learning

BitNet b1.58 (hand-rolled in Rust) Transformer Architectures Ternary Quantisation (STE) CUDA / cuBLAS / Tensor Cores AVX-512 SIMD

Protocols & Standards

MCP (Model Context Protocol) JSON-RPC 2.0 Server-Sent Events UCI (chess engine protocol)

Experience

Work Experience

2024-Present

Self-employed, Gothenburg

Independent Software Developer

  • Building open source tools in Rust for security, system hardening, and backend development
  • Raven Nest MCP: pentesting server wrapping 22 security tools behind a 6-layer safety architecture (46 endpoints, 394 tests)
  • Linux System Hardener: plugin-based hardening with Ed25519-signed rollback and six-distribution support, published on the AUR
  • This portfolio: an Actix-web and PostgreSQL application with JWT and Argon2id authentication, independently penetration tested (0 critical, 0 high)

2010-2017, 2022-Present

Killingsholmens Varv AB, Gothenburg

Harbour Worker

  • Network setup, electrical work, and IT infrastructure maintenance alongside marina operations
  • Logistics and harbour maintenance operations in a small boat harbour environment
  • Forklift certification and category B driving licence

2012-2021

Pusterviksbaren, Gothenburg

Operations, Bar & Register Manager

  • Responsible for bar operations, staff management, and technical support at events
  • Worked with point-of-sale systems and day-to-day service management

Jul 2017-Sep 2018

Storms Pakhus, Odense, Denmark

Team Leader and Bar Manager

  • Led and coordinated team in Odense's largest street food market
  • Responsible for daily operations, staff scheduling, and quality assurance

Jun 2006-Mar 2015

Jazzklubben Nefertiti AB, Gothenburg

Operations Manager

  • Led operations across 6+ functional areas at a Gothenburg jazz and live music venue
  • Managed staff scheduling, supplies logistics, and technical event support
  • Coordinated bar, front-of-house, and light/sound support for live events

May 2005-Apr 2011

FrölundaData AB (IT for Disabled), Gothenburg

Administrator

  • IT administration: order processing, invoicing, and inventory management systems
  • Website maintenance, customer support, and production coordination
  • Translation services and transport logistics

Education

Education

2023-2025

University of Gothenburg

Systems Sciences

Completed courses: AI & Machine Learning (VG), Cybersecurity (7.5 ECTS), Databases (VG, 7.5 ECTS), Introduction to Programming (VG, 7.5 ECTS), Human-Computer Interaction (7.5 ECTS), Society's Digitalisation (15 ECTS), Challenge-Driven Development (VG). Project work in Intermediate Programming, Organisations, and Strategy, Architecture & Governance.

2019-2020

Malmö University

Game Development

Game Design (7.5 ECTS), System Development and Project

2005-2010

University of Gothenburg & Stockholm University

Interdisciplinary University Studies

Courses in History of Ideas, Environmental & Natural Resource Management, and Portuguese. 120+ ECTS across humanities, natural sciences, and languages.

Open source

Projects

Raven Nest MCP

MCP pentesting server wrapping 22 security tools including Metasploit behind a 6-layer safety architecture; 46 endpoints, 394 tests.

Rust, MCP, AI, Pentesting, Metasploit, OWASP, Automation, Security

View source

Linux System Hardener

Plugin-based Linux hardening framework with signed checkpoint rollback; 6-distribution support, 2300+ tests, published on the AUR.

Rust, Tauri, Leptos, Trunk, WebKitGTK, SQLite, Ed25519, WASM

View source

BitNet Toy

Hand-rolled BitNet b1.58 in pure Rust: SIMD and CUDA matmul, autograd, ternary quantisation, training and inference, with no ML dependencies.

Rust, CUDA, cuBLAS, AVX-512, Machine Learning, Transformers

View source

Hyprland Keybind Manager

GTK4 keybinding manager for Hyprland with conflict detection and automatic backups; published on the AUR.

Rust, GTK4, Hyprland

View source

Languages

Languages

Swedish

Native

English

C2

Portuguese

C2

French

C1

Danish

B2

Norwegian

B2

Spanish

B1

Other

Daily Linux user since 2019. Active in the FOSS community; maintain packages on the AUR. Work comfortably across European teams in seven languages.