Sean Wallis

Experience

• 

  Management Performance Ltd (MPL)

  Sept 2010 - Apr 2013

  Consultant

  (Originally a Business IT Support Consultant - Promoted Sept 2011)After an internship in Vietnam, this was my first full time job. I soon proved my worth and technical knowledge to a wide range of clients. Despite my young age, some clients would repeatedly ask for me specifically to come back and at the same rate as the most experienced consultants. I travelled a lot between client sites, which provided a wonderful amount of experience. Although eventually I decided to move to Network Rail for a better work-life balance.Technologies: PHP, MySQL, HTML, CSS, JavaScript, jQuery, Ubuntu, VBA- Developed an internal operations system- Design & integration planning for performance & traceability applications for DHL Kellogg's - Development, server setup and installation of a performance system for DHL Ferrero- Automated labour planning for all manufacturing units at the Cadbury, Bournville site- Setup of project management tools for Harlan Laboratories- Workshops, and coaching support for Grange Packaging- Supporting the upgrade of performance systems for Penn Pharmaceuticals- Monte Carlo capacity analysis of a site expansion for Mr Fothergill's Seeds - Simulation modelling forklift movement and future alternatives for Jordans Ryvita- Capacity analysis for Akzo Nobel - Performance system, visual scheduler and changeover optimisation for Norseland Cheese- Performance systems maintenance over multiple Produce World sites - Upgrading the existing performance system for Charlie Bighams- Built a performance management system with user admin for PZ Cussons (Nigeria) - Automated performance system with integration for Wilson's Country (N. Ireland)- Content management of the Management Performance Ltd website- Design of planning and scheduling systems for Greencore Show less

• 

  Network Rail

  May 2013 - Jan 2018

  Business Systems Developer

  I gained a lot more experience and new technical knowledge whilst at Network Rail, before ultimately deciding to relocate. I'm very happy with the progress I made during this time.Technologies: React.js, Redux, RESTful API, PHP, MySQL, Slim / Laravel, Behat, HTML5, CSS3, Sass, JavaScript, ES6+, JSX, Webpack, NPM, Yarn, Mocha, Adapt Developer Framework, AngularJS, Grunt, Bower, Karma, Jasmine, jQuery, Inkscape, GIMP, WordPress, VBA, Docker - Training Management System with eLearning- Address Change application - Help Desk application - Content Management System- Procurement System- Core systems updates- WordPress and SharePoint theme design- Created a reporting tool for Active Risk Manager Show less

• 

  Artificial Industry (member of the VANAD Group)

  Feb 2018 - May 2018

  Full Stack Developer

  Much of my time at Artificial Industry involved fire-fighting security and design issues within a variety projects. I put out the major fires, and then chose to join Enrise.Technologies: PHP, Node.js, MySQL, MongoDB, Laravel, Express, Vue.js, Behat, RESTful API, HTML, CSS, Sass, Less, JavaScript, ES6+, NPM, Gulp, jQuery, ReactVR, Docker, Vagrant, Jira- Ambulance Reporting Data API and front end - Therapy tablet web application and registration - Flower Card Data application and exchange layer setup - Interim Recruitment Management application - Personal Care Assistant legacy system maintenance and refactoring Show less

• 

  Enrise

  Jul 2018 - Jul 2019

  Full Stack Developer

  I was a proud 'Enriser' that really enjoyed playing a role within a self-steering company alongside lots of talented and passionate developers. An office relocation made my commute impractical, otherwise I would have happily stayed forever.Technologies: PHP, Symfony, Laravel, Node.js, Express.js, Next.js, Server Side Rendering, GraphQL, Apollo, MongoDB, React.js, Redux, Vue.js, Jest, Accessibility (WCAG 2.1), JAWS, NVDA, VoiceOver, Sass, JavaScript, ES6+, jQuery, Docker, AWS, S3, GitLab CI, Fractal, Jira- Glass wrapping commercial site and CMS- Meeting room booking system for Schiphol Airport- Gemeente Nijmegen Electronic Status Form- Component library updates and accessibility fixes- Beslist.nl refactoring and migration - Government tendering platform- DCMR.nl website and CMS- Responsive rebuild for Orlaco camera solutions- Mobiliteitsfabriek mobile application middleware Show less

• 

  VidaXL

  Aug 2019 - Mar 2020

  Lead Developer

  I was leading multiple development teams based in China and the Ukraine for vidaXL: overseeing architecture, quality and ways of working.Technologies: Node.js, restify, Nuxt.js, PHP, Vue.js, Sass, JavaScript, ES6+, Docker, Kubernetes, Bitbucket, Bamboo, Jira

• 

  RaiseNow

  Apr 2020 - now

  Principal Developer

  Handling a lot of responsibility within a growing start-up. Hands-on development, maintenance and 2nd line support. Plus organising the team, supporting the product owner, aiding with restructuring, recruitment and onboarding. The broad scope includes: event driven systems, webhooks, integrations, micro services, tooling & automation, infra/DevOps, monitoring & alerting, admin interfaces, user management, onboarding, payments and high-volume ledger payout systems.Technologies: PHP, Symfony, React.js, Node.js, Next.js, TypeScript, JavaScript, jQuery, ES6+, Sass, Docker, Mesos, Bitbucket, Jira, AWS Lambda, S3, API Gateway, Elasticsearch, RabbitMQ, Behat Show less