Skip to main content

Oliver Paul Davies (opdavies)

Technical skills

  • Languages: PHP, SQL, HTML, CSS, JavaScript, Bash
  • CMSes and Frameworks: Drupal (6-9), Symfony (2-5), Sculpin, Tailwind CSS, Vue.js
  • Tools: Git, PHPUnit, PHPStan, Behat, Jest, Docker, Ansible, Puppet, Apache, Nginx, MySQL, Jenkins, GitHub Actions
  • Platforms: Acquia,, Pantheon, DigitalOcean, Linode


Inviqa websites (Lead Backend Developer and Technical Team Lead)

  • Co-developed the Drupal 8 versions of the Inviqa UK and Germany websites, including a number of custom modules.
  • Wrote custom migrations to migrate existing data from the legacy site.
  • Solely upgraded the sites from Drupal 8 to Drupal 9.
  • Technologies used: Drupal 8/9, Vue.js, Behat, PHPUnit, PHPCS, PHPStan,
  • Links:,

OutdoorLads website (Lead Developer, Microserve)

  • Architected and co-developed a Drupal 8 and Drupal Commerce based events and membership website and management system.
  • Introduced automated testing and test-driven development, resulting in over 100 tests being added.
  • Contributed to the custom migration of data from the legacy system, including users, event (product), and attendance (order) information.
  • Technologies used: Drupal 8, Drupal Commerce 2, PHPUnit, Tailwind CSS.
  • Link: websites and infrastructure (Developer, Drupal Association)

  • Improved by adding new features and fixing bugs, improving the user experience for new users and Drupal contributors and maintainers.
  • Assisted in the upgrade of to Drupal 7 with high-profile community members.
  • Tested and contributed to the responsive version of Bluecheese (the theme) which was launched in December 2014.
  • Links:,,

Intranet for Admiral Insurance (Lead Developer, Precedent)

  • Completed a Drupal development project, working closely and often on-site with Admiral's staff Developers.
  • Integrated single-sign-on using LDAP, Active Directory, and NTLM.
  • Technologies used: Drupal 7, Git, Linux, Apache, MySQL.

Insurance group websites (Lead Developer, Freelance)

  • Developed and maintained a collection of business-to-consumer and business-to-business websites, selling insurance policies for electronic gadgets.
  • Increased revenue by increasing the number of sites from one to seven, and maintaining costs by re-using the same codebase and hosting and implementing patterns such as feature flags.
  • Technologies used: Drupal 7, Drupal Commerce, AngularJS, PHPCS, PHPStan, Jest, GitHub, Acquia.

Work Experience

Lead Software Developer at Transport for Wales - 2021 to present

Freelance Software Developer and Systems Administrator - 2007 to present

  • Developed and re-developed applications using Drupal, Symfony and Silex.
  • Migrated sites to newer versions of Drupal (6 to 7, and 7 to 8).
  • Provisioned and maintained Linux servers for clients.
  • Introduced version control systems, automation and deployment processes to existing projects.

Senior Software Engineer at Inviqa (Remote) - 2019 to 2021

  • Worked on a development team responsible for a number of Drupal 7 and 8 projects, which I led for over a year in an acting Technical Team Lead role.
  • Augmented onto a client development team for five months, co-developing an application using Drupal, Angular, and TypeScript.
  • Part of the out-of-hours critical application support team, supporting applications including Drupal, Magento, and Sylius.
  • Certified Mental Health First Aider and part of the Wellbeing team.
  • Co-organised and presented at the internal Drupal community of practice (CoP) sessions, and presented at the Engineering and Front-End CoPs.
  • Link:

Senior Drupal Developer at Microserve (Bristol, UK) - 2017 to 2019

  • Developed and maintained various Drupal 7 and 8 projects including custom modules and automated tests, such as integrating Drupal with third-party services.
  • Improved the accessibility of various projects by working on front-end and theming related tasks.
  • Wrote custom migrations to import data from various sources into Drupal 8.
  • Link:

Senior Drupal Developer at Appnovation (Cardiff, UK) - 2016 to 2017

  • Co-developed various Drupal 7 and 8 projects for UK, US and Canadian clients, including custom modules and themes.
  • Link:

Lead Drupal Developer at CTI Digital (Remote) - 2015 to 2016

  • Contributed to and helped support various existing Drupal 7 projects.
  • Improved my Drupal 8 knowledge via self-guided learning, focussing on custom module development and data migration.
  • Link:

Senior Drupal Developer at Microserve (Bristol, UK) - 2015

  • Full-stack Drupal 7 development, focussing on custom module development, REST server integration via restws module, and data migration from Drupal 6.
  • Updated and modernised a non-Drupal PHP platform to ensure its compatibility with their new Drupal 7 website, adding Composer to manage dependencies and Guzzle to perform HTTP requests to Drupal to trigger actions via REST.
  • Link: Developer at the Drupal Association (Remote) - 2014 to 2015

  • Worked on the website, its sub-sites and infrastructure, developing new tools and features whilst fixing bugs and issues.
  • Monitored and maintained the testbot infrastructure during high traffic periods, ensuring that automated tests are able to run for patches submitted to
  • Fixed any issues that made a Drupal 8 release blocker, ensuring that there were no further delays in releasing Drupal 8.
  • Link:

Senior Drupal Developer at Precedent (Cardiff, UK) - 2013 to 2014

  • Led a development team consisting of colleagues in other offices as well as an off-site client contractor.
  • Completed an in-progress Drupal 7 project, adding missing functionality and fixing bugs.

Application Developer & System Administrator at Nomensa (Bristol, UK) - 2012 to 2013

  • Developed custom Drupal 7 modules including an integration with CiviCRM.
  • Completed front-end theme development work with a focus on accessibility, ensuring that it was WCAG 2.0 compliant.
  • Worked alongside and mentored front-end Developers in Drupal theming on projects. Several of them would later become full-time Drupal Developers and Themers.
  • Provisioned servers with a Nginx, PHP-FPM and MySQL stack, and deployed applications.
  • Link:

PHP Developer at Proctor & Stevenson (Bristol, UK) - 2011 to 2012

  • Developed and co-developed new websites, including the agency’s first Drupal 7 client project.
  • Provided ongoing support and maintenance of websites for existing clients.
  • Architected and developed a Drupal 6 and Ubertcart project for a water services company, which processed residential and commercial property transactions until September 2020.
  • Link:

Web Developer (PHP, Drupal) at Horse & Country TV (Cwmbran, UK) - 2010 to 2011

  • Maintained and supported the company’s Drupal 6 website as part of a two-person team.
  • Re-architected and re-developed the Events section, adding Ubercart for paid events which added a new revenue stream for the company.
  • Link:

Certifications and Qualifications

  • 2021: partner certification (for Inviqa)
  • 2019: Adult Mental Health First Aider - Training in Mind / St. John's Ambulance
  • 2018: Acquia certified Cloud Pro
  • 2017: Acquia certified Front End Specialist - Drupal 8
  • 2017: Acquia certified Back End Specialist - Drupal 8
  • 2017: Acquia certified Developer - Drupal 8
  • 2007-2009: HNC Computing (End User Support)


  • Organiser of the PHP South Wales user group.
  • Past organiser of the PHP South West, and Drupal Bristol user groups.
  • Co-founder of the DrupalCamp Bristol conference.
  • Open source contributor and maintainer.
  • Drupal core contributor, and contribution mentor.
  • Coding Fellowship Bootcamp mentor.