Hi, thanks for visiting!

My name's Sam Kelleher, and I am a Senior Full-Stack Web Developer / Software Architect based in London. This website mostly contains a sample of work from my portfolio, tips and best practicies for building web applications, and reviews + photos of food and hotels in London.

Go ahead and explore my site, search for something specific if you fancy. Reach out to me by any of these various means below.

Portfolio Posts

React + Redux Administrative Panel SPA

A sleek and comprehensive single page application built using the latest React and Redux technologies. This application had to include comprehensive control capabilities including user management, data manipulation, search, a detailed analytics visualisation section, image editing with drag and drop. There was a lot to do, but with just a few tweaks the app is lightening fast to startup and initialize. One of my personal favourite things about Redux, and the flux pattern in general, is the predictability. As such, this project was one of with the fewest detected defects. Since what is on the screen is guaranteed to be generated by the data in state, any glitches or unexpected behaviour could be traced instantly using the Redux Time Machine. Read more...

Responsive Isomorphic Website with React, GraphQL, CSS Modules

Had the privilege of creating the public facing website for the company I work for, Blink. Since it's another greenfield site and React was strongly adopted by the company, it made a lot of sense to also construct the website using React. The content had to be editable by the marketing team, but since the parts of the website don't fit in a classic page type system that is popular on Wordpress, I integrated a third part content management platform, Contentful. Since the website would be Isomorphic, I had a Node Express server at my disposal, so I immediately got to work adding a GraphQL API that would be responsible for serving up the various strings and images stored in the CMS for the specific elements of these bespoke built pages. Read more...

P3 Image Color Experimentation

2016 generation MacBooks and iPhones have a wide-gamut P3 display that show 25% 'more' red and greens compared to standard RGB monitors. So I began to experiment to work out what was needed to be able to use this extra color space when presenting images on web and native apps. Basically what I needed to work out was, when given an image that is using P3 color space, can I make a thumbnail from it without destroying the P3 colors and output a transformed image that is still in P3. Further that, to be able to display the specific P3 optimised images on devices that support it. Read more...

Pure Swift Instagram Queue App for iOS

Sometimes it's nice to branch of into new technologies to keep perspective and knowledge of relevant stacks. This is my adventure into pure the pure iOS world with a simple Swift iPhone app. The app handles the basics, but should handle them well. Connecting to a HTTPS pinned API, download a data in JSON, cache it locally. Then parse it and use it to display data within the app. In this case, the app is a list of photos I have taken that I have uploaded to my website, but have yet to share on Instagram. I can track which photos are shared as I linked Instagrams post callback into my website, so new posts on Instagram can be matched to photos I've uploaded to my website by way of metadata matching. Read more...

Backbone + Marionette GitHub Repository List - Sample Application

Sometimes the best way to learn something is to study each component separately, this gives us a true in depth skill on how something specific works. However, putting these components together to make a full featured application is another ball game entirely. I've always maintained that Software Engineering isn't difficult, but it can be complicated - as a typical application will consume numerous different technologies from development stages, to deployment, to runtime. It's putting all these modules together that is the hard part. Read more...

  • ASOS中国 - Hybrid iOS and Android eCommerce App

    Stared this project from scratch in Spring 2015 for a London based agency on behalf of their client ASOS China. Following a similar design to the UK iOS app, this Cordova powered runs on both Android and iOS devices, in both orientations, on both mobile and tablet.Making pure JavaScript single page applications is one thing, with it's own set of complexities and challenges; but doing the equivalent for a JavaScript app that will function only in a mobile environment brings with it an entire new set of challenges. These are specifically related to the user interface. The app still has to retain the gesture recognition and actions found in native applications, and perform will full buttery smooth animations expected from real applications. Read more...

    CMS Gallery + GIF Support

    A photo gallery within the admin console of a CMS I created called Leaf. The gallery components takes uploaded images, and creates all the required dimensions for the website. It supports creating WebP versions of all images, as well as the usual PNG, JPEG, types. PDFs are also converted to JPEGs. If a GIF is uploaded, the animation is preserved and rendered. The GIF is also undergoes some lossless compression to make the animation load faster. Read more...

    Backbone + WebSocket Single Page Application for Car Dealerships

    A online and packagable application built using Backbone.js + Marionette.js, running on a WebSocket enabled C#/SQL backend. Being a Single Page Application (SPA), the application runs very natively, with fast performance between screen loads, and can handle transient network errors as users dip in and out of WiFi coverage. Read more...

    You are on page 1 of 2