I'm Jamie Mason, I live in Leeds in the United Kingdom and I'm a Contract Front-End Developer specialising in JavaScript and Web Performance Optimisation. I help companies of all shapes and sizes with their Front-End Architecture, Performance, Automated Testing, Tooling, Workflow/Process, and more.

Originally a Designer and now for many years an Engineer, I have designed and built high traffic Websites such as skybet.com, skyvegas.com, and skypoker.com at BSkyB — one of the UK’s largest Media organisations.

I have been Contracting and offering Consultancy as Fold Left Ltd since 2012 and during this time I have;

• Lead the UI Development of the Sky Sports Live Score Centre.
• Lead the UI Development of William Hill's Self-Service Betting Terminals.
• Conducted a runtime performance audit for Shell Oil.
• Developed an iPad application for the Barclays Premier League Referees.
• Developed a Live Football App for Betfair.
• Had contributions accepted to the AngularJS and PhantomJS projects.
• Developed popular Open Source projects ImageOptim-CLI, shrinkpack, Jasmine-Matchers, and karma-benchmark.
• Been a Technical Reviewer for Smashing Magazine and Packt Publishing.
• Written for Net Magazine.