Backend Developer//Apr 2023 — Present
Architecting and developing a comprehensive outdoor adventure platform for Nordic municipalities, leading migration from Rails to Elixir and implementing GDPR-compliant infrastructure.
RubyElixirRustGoGIS
Stockholm, Sweden
JOAKIM NYLÉN
Building scalable systems and contributing to open-source. 15+ years of crafting digital solutions.
$ languages --list
Ruby | Elixir
> System.Profile
ABOUT_ME
> I've been coding since I was 14 years old, turning my early passion into a professional career spanning over a decade. Based in Stockholm, Sweden, I currently work as a Backend Developer at OutdoorMap, where I build scalable systems using Ruby and Elixir.
> My entrepreneurial journey includes running Honeybee.it and XMLTV.se — a 15-year venture where I collected, produced, and sold EPG data (TV Guides) to major Swedish newspaper organizations and cable operators.
> I'm deeply committed to open-source community, building libraries and tools that solve real problems for developers worldwide.
Experience
15+
Years Active
Projects
50+
Open Source
Business
15
Years XMLTV
Expertise
Ruby
& Elixir
> ls projects/
PROJECTS
Actively contributing to the developer community with tools and libraries that solve real problems.
library
mrml-rails
Handle MJML templates in Ruby on Rails with ease. A popular gem for building responsive email templates.
Ruby Rails Email
library
String Matcher
Match strings to valuable data in Elixir. Powerful string matching and parsing utilities.
Elixir Parsing Data
library
xler
Parse Excel files in Elixir using Rust. High-performance XLSX parsing with native bindings.
Elixir Rust Excel
project
Vind
The project that handled the import of TV data for XMLTV.se. Robust data pipeline architecture.
Elixir ETL Data Pipeline
project
Metagraph
A metadata database in Elixir. Flexible schema for storing and querying metadata at scale.
Elixir Database Metadata
project
PST
Paste and Share Tool - A Rust command-line application for uploading files and pastes to multiple sharing services with automatic prioritization and fallback.
Rust CLI File Sharing
> cat experience.log
EXPERIENCE
Journey through my professional career as a backend developer
Senior Ruby on Rails Consultant//Sep 2025 — Present
Senior Backend Consultant for enterprise clients across financial services and non-profit sectors, architecting scalable APIs and database schemas for high-traffic applications.
RubyPostgreSQL
Senior Ruby on Rails Consultant//Nov 2023 — Oct 2024
Senior Backend Consultant delivering production-grade applications for enterprise clients, architecting scalable APIs and optimized database schemas for high-traffic systems.
RubyPostgreSQL
> show skills --all
TECHNICAL_EXPERTISE
EXPERTISE
Backend Development Data Ingestion Server Management Code Performance
LANGUAGES & FRAMEWORKS
Elixir Phoenix Framework Ruby (on Rails) Tailwind CSS Perl PHP Rust Go
TOOLS
VS Code iTerm Docker Postico Postman Git
PLATFORMS
Heroku Amazon AWS Netlify Render OVH Hetzner Barebone Linux
> init contact_protocol
LET'S_CONNECT
Have a project in mind or just want to chat? I'm always open to discussing new opportunities.
TRANSMIT_MESSAGE
Or send directly to website@joakim.nylen.nu