John Gunnarsson
John here — fullstack dev by day, bug hunter by night.
I turn ideas into slick, functional web apps with clean code and a focus on what matters.
Let's make something great. Or at least something that doesn't break on launch.
"Powered by John — Nordic precision, global impact"
Web ProjectSnrgyStudios.com
Built the company's website from scratch, collaborating closely with designers Donnie Mastromonaco and Hannes Lövbacka.
Visit Website →
Web ProjectSoldr.pro
Supported maintenance and development of the landing page before and during the Kickstarter launch. Initiated the e-commerce site before handing off to the main developer.
Visit Website →
Web ProjectCrewmate.se
Built a modern web application for a company that provides crew management and scheduling specifically for the expo & event industry. Features include user authentication, real-time updates, real-time chat, fully functional booking system, and responsive design for mobile and desktop use.
Visit Website →
A/B TestingNoora Design
Created two landing pages for A/B testing of Noora's wall-mounted lamp. Both pages were designed to optimize conversion rates and user experience.
E-commerceGlorb.me
Acquired and maintained this e-commerce platform, implementing various updates and improvements over time to enhance user experience and functionality.
Visit Store →Certificate of Completion
John Gunnarsson has successfully completed the course requirements and demonstrated proficiency in the subject matter.
Download CertificateCertificate of Completion
John Gunnarsson has successfully completed the course requirements and demonstrated proficiency in the subject matter.
Client Reviews
Trusted by designers, entrepreneurs, and creative professionals
"John is incredibly reliable and delivers exactly what you need. His attention to detail and clean code made our collaboration seamless. This is some extra text that will only show when expanded. Add more here to test the effect."
"Working with John was a pleasure. He understands design intent and translates it perfectly into functional code."
"John helped us set up A/B testing for our product launch. He was patient with our questions and delivered exactly what we needed."
"Jag hittade John via fiverr där jag tyckte hans portfolio såg lovande ut, och han levde helt klart upp till mina förväntningar! Super trevlig och ett härligt driv av att göra kunden nöjd. Han är inte rädd att ta egna beslut i områden där han får lite eller ingen information om önskemål, vilket jag tycker är toppen. Och samtidigt så tvekade han inte på att ändra det jag ville ändra. Uppskattar hans långsiktiga tänk i upplägget av projektet där han förberett min hemsida för framtida ändringar och uppdateringar. "
"John has been helping us maintain our e-commerce site. He's reliable and gets things done when we need updates."
Frequently Asked Questions about Fullstack Development
What is a fullstack developer?
A fullstack developer can work with both frontend and backend of web applications. I specialize in React, Svelte, Spring Boot and modern web development.
How much does it cost to hire a freelance developer?
Prices vary depending on project complexity and experience level. Contact me for a personalized quote tailored to your specific project.
What technologies do you use?
I work with React, Svelte, Spring Boot, Node.js, PostgreSQL, MongoDB and many more modern technologies. See my projects for examples of what I can deliver.
How long does a web development project take?
Project timeline varies from a few weeks to several months depending on scope. I always deliver a detailed timeline before project start.