Ruby on Rails / Full-Stack Developer

Jesper Christensen

Full-stack Ruby on Rails developer with 4+ years of professional experience building reliable, user-focused web applications.

Get in touch View my work

About

A bit about me

Full-stack Ruby on Rails developer with 4+ years of professional experience building reliable, user-focused web applications. Strong background in JavaScript, modern front-end frameworks, and RESTful APIs, with a passion for clean, maintainable code.

Experienced in remote collaboration, test-driven development, and delivering production-ready solutions in cross-functional teams.

Experience

Where I've worked

May 2024 — Present

Esbjerg, DK

Freelance Developer & Founder

Safeo Consulting

  • Worked as a freelance developer and founder, collaborating full-time with a startup client.
  • Developed new features using Ruby on Rails, JavaScript, and Hotwire (Stimulus & Turbo).
  • Contributed to sales and marketing strategy discussions, providing technical perspective.

Apr 2021 — Nov 2025

Odense, DK

Ruby on Rails Developer

Træls.it

  • Developed new application features using Ruby on Rails, Hotwire (Stimulus & Turbo), and JavaScript.
  • Applied Test-Driven Development (TDD) practices and wrote extensive automated tests for all new functionality.
  • Maintained and improved existing codebases, implementing numerous bug fixes and performance improvements.
  • Upgraded multiple projects running outdated Rails versions, ensuring compatibility, stability, and modern standards.
  • Worked with and integrated RESTful APIs, including designing, consuming, and debugging API interactions.
  • Handled legacy systems, including working with fixed-width databases, ensuring accurate data parsing and system reliability.

Skills

What I work with

Ruby on Rails Hotwire (Stimulus, Turbo) HTML CSS JavaScript Tailwind & Bootstrap RESTful APIs

Contact

Let's work together

I'm always open to new opportunities and interesting projects. Feel free to reach out.

jesper@safeo.dk