Summary
- Shipped production tooling that is capable of reducing payroll reconciliation from 3 days to 30 minutes.
- Built marketplace platform capable processing 4,200+ transactions per seconds through self-built Rust backend (rheo.se) in 3 months.
- Designed real-time graphics engine (wgpu) running at 60 FPS on mobile SOCs.
- Delivered three commercial full-stack applications with < 2min cold-start deployment.
Full-Stack Systems Engineering
Proficient in architecting and implementing end-to-end solutions across the complete technology stack. Built production systems using Rust (Axum/Dominator) for high-performance backends, SvelteKit and React for complex frontends, and PostgreSQL for robust data modeling. Integrated third-party services including Stripe Connect, Slack API, and Fortnox API.
Deployed scalable infrastructure using Docker, GitHub Actions, and Cloudflare Tunnels. Implemented CI/CD pipelines with blue-green deployment strategies and comprehensive testing including TDD and property-based testing.
Performance-Focused Systems Development
Built low-level systems in Rust and C++ with focus on performance optimization and memory efficiency. Developed custom game engine featuring data-driven architecture, ECS implementation (hecs), and advanced rendering techniques including ray marching, SDF traversal, and post-processing effects.
Implemented asynchronous job processing systems using Redis Streams. Optimized server response times to p95 of 78ms in production microservices. Designed render pipelines achieving 60 FPS on mobile hardware without platform-specific optimizations.
Rapid Prototyping and Delivery
Demonstrated ability to move from concept to production-ready systems efficiently. Self-directed learning approach focused on understanding technologies from first principles enables rapid assimilation of new concepts and frameworks.
Committed to building maintainable, well-tested systems with robust error handling. Focus on solving complex technical challenges through clean architecture and strategic technology choices.
Case Study: Rheo
Rheo – Resale Marketplace Platform
Mobile-first marketplace platform built with modern architecture. Rust microservices (Axum), React Native client, PostgreSQL, Redis Streams, Stripe Connect. Handles complete buy/sell ecosystem including user onboarding, item listings, offer negotiation, and secure checkout. Deployed with Docker and GitHub Actions.
Technologies Used:
Key Metrics
- p95 server response: 78ms (Rust, 256MB container)
- Zero-downtime deployments via blue-green strategy
Architecture
- Axum API → Redis Streams → async workers (Tokio)
- Stripe Connect onboarding + escrow via webhooks
- Docker Compose stack; production deploy via GitHub Actions + Cloudflare Tunnels
- React Native client with Zustand state management and TanStack Query
Technical Highlights
- Complete buy/sell ecosystem with offer negotiation
- Secure payment flows with seller verification
- Asynchronous job processing with real-time progress updates
- Cross-platform mobile app with native experience
Experience
Systems Engineer – Internal AI Tools
TURBORILLA AB
March 2025 – Present · Umeå, Västerbotten County, Sweden
- Designed and shipped a Rust full-stack application (Axum/Dominator) that automates work-hour ingestion from Slack → Fortnox and flags financial discrepancies before payroll.
- Deployed globally via Cloudflare Tunnels from a locally hosted Mac Mini server; zero downtime in production.
- Added property-based tests for the validation engine; caught 11 edge-case bugs pre-production.
- Reduced payroll reconciliation time from 3 days to 30 minutes through automated validation.
Key Skills:
- Rust (Full-Stack)
- Axum
- Dominator
- PostgreSQL
- Slack API
- Fortnox API
- TDD
- Property-based Testing
- Cloudflare Tunnels
Game Engine Developer
Rydenfalk Systems
February 2025 – Present · Umeå, Västerbotten County, Sweden
- Built a data-driven engine in Rust (wgpu) with ECS (hecs), hybrid SDF-voxel traversal, TAA & bloom.
- Render-graph compiles at startup; maintains 60 FPS on Apple A15 and M1 without platform-specific optimizations.
- Implemented custom Entity Component System architecture supporting robust game state management.
Key Skills:
- Rust
- wgpu
- hecs
- Real-time Rendering
- Signed Distance Fields
- Voxel Rendering
- Render Graph Design
- Mobile Graphics Optimization
Full-Stack Contractor
Self Employed
January 2024 – May 2025 · Umeå, Västerbotten County, Sweden
- Delivered three commercial codebases (SvelteKit + Node + PostgreSQL) with CI/CD via GitHub Actions.
- Integrated Stripe Connect for split payments; handled PCI compliance via Stripe webhooks.
- Containerized all services in Docker; dev-prod parity < 2 min cold start on new machines.
- Built custom algorithm for personalized feed generation based on user attributes.
Key Skills:
- SvelteKit
- TypeScript
- Node.js
- PostgreSQL
- Stripe API
- Docker
- CI/CD
- Algorithm Design
- OAuth
Programming Languages
Production
- Rust (Advanced: Systems, Backend, Game Dev)
- TypeScript
- JavaScript (ES6+)
- Python
- SQL
- HTML5
- CSS3/SASS
Familiar
- Java
- C++
- C
- WGSL (Shader Language)
- Assembly (Basic)
Full-Stack Web Development
Frontend
- Svelte/SvelteKit
- React
- React Native
- Rust (Dominator)
- Tailwind CSS
- Redux/Zustand
- Webpack/Vite
Backend
- Node.js (Express.js)
- Rust (Axum)
- API Design (REST, GraphQL)
- WebSockets
- Microservices Architecture
Databases
- PostgreSQL
- Redis
- MongoDB
- MySQL
- Data Modeling
- ORM (Prisma, Sequelize)
Systems & Game Engine Development
Architecture & Design
- Game Engine Architecture
- Data-Driven Design
- Systems Architecture
- ECS Implementation (hecs)
Graphics & Rendering
- Real-time Rendering
- wgpu
- Vulkan
- OpenGL
- Ray Marching
- SDF Rendering
- Voxel Rendering
- Post-Processing (TAA, Bloom)
- Shader Programming (WGSL)
Core Concepts
- Low-level Optimization
- Memory Management
- Concurrency & Parallelism
- Real-time Systems
- Type Safety Implementation
DevOps, Cloud & API Integration
Cloud & Infrastructure
- AWS (EC2, S3, Lambda, RDS)
- Cloudflare (Tunnels, Pages)
- Docker
- Containerization
- Infrastructure Management
Tools & Practices
- CI/CD (GitHub Actions)
- Git / Version Control
- Blue-Green Deployments
API Integration
- Slack API
- Fortnox API
- Stripe API
- Stripe Connect
- Firebase Authentication
- OAuth
Core Skills & Practices
Methodologies & Quality
- Test-Driven Development (TDD)
- Property-based Testing
- Unit & Integration Testing
- Algorithm Design
- Problem Solving
Professional
- Independent Project Leadership
- System Research & Optimization
- Error Handling & System Resilience
- Technical Communication
- Code Reviews
Other Projects
Portfolio Website
Statically-generated site built with SvelteKit, TypeScript, and Tailwind CSS. Features component-based architecture, responsive design, and dynamic content rendering. 100 Lighthouse score; deployed on Cloudflare Pages with zero-cost edge caching.