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Timothy Sherratt, Software Developer in London, United Kingdom
Timothy Sherratt

Software Developer in London, United Kingdom

Member since May 12, 2016
Timothy has been a startup co-founder, web agency director, and engineering team lead. His interests lie in solving business problems with technology. He does most of his work in Ruby/Rails, where he has extensive experience building large, non-standard apps that scale excellently. He also has experience on the front-end building interactive user interfaces with React.js and associated tools.
Timothy is now available for hire

Portfolio

  • Intro (introhq.com)
    Django, MongoDB, React.js, Bootstrap
  • Mitoo
    Ruby on Rails, RabbitMQ, MicroSOA, Sidekiq, Sneakers, Redis, Rackspace, AWS...
  • Bluefields
    Ruby on Rails, MySQL, Redis, Rackspace, Capistrano, Devise, Rspec

Experience

  • Back-end Architecture, 7 years
  • Ruby Gems, 5 years
  • API Integration, 5 years
  • Ruby on Rails (RoR), 5 years
  • RESTful APIs, 4 years
  • Web Scraping, 4 years
  • Component-based Rails Architecture (CBRA), 2 years
  • React, 1 year
London, United Kingdom

Availability

Part-time

Preferred Environment

OS X, Sublime, Git, Terminal

The most amazing...

...thing I've created is a system that processed and inferred meaning to millions of sports results every day.

Employment

  • Contract Engineer

    2016 - 2016
    Intro (introhq.com)
    • Built out a system to track all notifications sent to users across various media, including complex notification preferences.
    • Created pages for users to set preferences and track their notifications.
    • Built interactive summary pages for users to explore their team's network.
    Technologies: Django, MongoDB, React.js, Bootstrap
  • Co-founder/Head of Back-end

    2014 - 2016
    Mitoo
    • Designed and built a secure, stable, scalable API to run four mobile apps and a web app.
    • Created a system to scrape/integrate with sources of sports data, inferring meaning to the ingested data, keeping users up-to-date with sports results and schedules. At its peak, it processed millions of data per day, and had 1M+ users.
    • Built a data mapper type ORM on top of Active Record to allow greater separation between different parts of the system, leading to significantly improved developer efficiency for very large/complex Rails apps.
    • Oversaw all back-end engineering, from system architecture through to hiring and team management.
    • Transitioned Mitoo to a MicroSOA architecture (using sneakers/RabbitMQ) to simplify complex data-processing pipelines.
    • Designed and built a custom, reusable notification system to simplify and speed up generation of notifications from application events as well as track, log, and report on millions of notifications sent across various media (SMS/email, push).
    Technologies: Ruby on Rails, RabbitMQ, MicroSOA, Sidekiq, Sneakers, Redis, Rackspace, AWS, Capistrano, Devise, Pundit
  • Head of Back-end Development

    2012 - 2014
    Bluefields
    • Spearheaded transformation of a large, monolithic, ball-of-mud codebase into a lean modular application capable of scaling.
    • Designed and built a secure, stable, scalable API to run a web app + mobile apps.
    • Built a notification system capable of automatically sending and individually tracking millions of notifications.
    Technologies: Ruby on Rails, MySQL, Redis, Rackspace, Capistrano, Devise, Rspec
  • Founder

    2011 - 2012
    Bit Circus, Ltd.
    • Built simple Rails apps to scale, at speed.
    • Learned to tread the balance between high-quality, maintainable code and the need to move as quickly as possible to build a successful business.
    Technologies: Ruby on Rails, MySQL, PHP
  • Head of Software

    2008 - 2011
    London Central Communications
    • Created a seamless voice recording system and web interface for file retrieval that interfaced with customer PBXs.
    • Built a cloud-based preferences and account administration system for Asterisk PBX installations.
    Technologies: Java, Servlets, Tomcat, Apache, Asterisk PBX, Linux, VoIP

Experience

  • Storm - Data Mapper(ish) Style ORM for Rails (Development)
    https://github.com/tpsherratt/storm

    When Rails projects get *very* large or complex, development and developer efficiency typically slows down due to the interdependent (ball-of-mud) nature of the typical Rails app.

    This is the cost of all the wonderful magic that Rails provides, and it means that you can get your projects up and running extremely quickly.

    To combat this inevitable slow-down, I built a data mapper style ORM that sits on top of Active Record (i.e., uses its SQL generation, etc.). This enables different engines that do not depend on one another, giving much greater flexibility (at the cost of a little more typing) as products grow very large.

    This forced separation means that once a large scale is reached, developers will not be dealing with a web of dependencies, and ultimately, it will be more easily able to split out apps that provide a subset of the main app's functionality, easing the path to an SOA architecture when this becomes inevitable.

    See http://cbra.info/ for other people thinking around this topic.

  • Love Remote Work (Development)

    This is an application that I worked on, starting with a simple MVP and currently undergoing updates to replace the front-end with React.js, and back-end with an appropriate API to support it.

    Included here to demonstrate full-stack ability, as one of the few public-facing projects I worked on.

Skills

  • Languages

    Ruby, Python, HTML, Java, JavaScript, CSS, Less, Bash, SQL, Sass
  • Frameworks

    Ruby on Rails 4, Ruby on Rails (RoR), Bootstrap, Factory Girl, Django
  • Libraries/APIs

    API Development, JSON API, Segment.io, Pundit, Sidekiq, Rails Engines, Python-rq, CarrierWave, Devise, jQuery, React
  • Tools

    JBuilder, Rake, RSpec, Capistrano, RabbitMQ
  • Paradigms

    Functional Testing, Back-end Architecture, Unit Testing, Agile Software Development, Component-based Rails Architecture (CBRA)
  • Platforms

    Linux, AWS EC2, Iron.io, Rackspace, Algolia
  • Other

    API Integration, Web Scraping, RESTful APIs, API Design, API Testing, Micro SOA, Ruby Gems, Keen.io, Branch Metrics, CanCan, Sneakers
  • Storage

    AWS S3, Redis, MongoDB, MySQL, PostgreSQL

Education

  • Bachelor of Science degree in Computer Science
    2004 - 2007
    University of Bristol - Bristol, UK
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