Full-Stack Developer

About the job

We’re looking for a talented and motivated Full-Stack Developer to join the Conversion I/O tech team. You’ll work alongside a close-knit group of engineers building the I/O platform — a proprietary experimentation operating system used by leading brands across EMEA and North America. **You’ll contribute across the full stack, from backend APIs to modern frontend components, working on features that directly impact how we build and manage experimentation programs.** **Roles & Responsibilities** **Day-to-Day** - Build and maintain features across the full stack using Laravel (PHP) on the backend and Vue.js. - Write clean, well-structured code and participate actively in peer code reviews. - Collaborate with the team via async channels (Microsoft Teams, Jira) and scheduled video calls across timezones. - Debug and resolve issues across the full stack — from database queries to frontend rendering. - Contribute to sprint planning, ticket estimation, and technical discussions on architecture and approach. **Longer-Term** - Take increasing ownership of platform features and technical decisions as you build familiarity with the codebase. - Help shape tooling improvements and contribute ideas for making the team’s development workflow more efficient. - Support integrations with third-party platforms including A/B testing tools (Optimizely, VWO, Kameleoon) and analytics APIs. **Requirements** These are the skills we’ll screen for in every candidate. You should be confident using these in production environments. **Backend** - PHP 8.1+ with Laravel — including Eloquent ORM, migrations, service providers, middleware, queue jobs, and Artisan commands. - MySQL — query optimisation, indexing, and relational database design. **Frontend** - JavaScript (ES6+) — solid core language understanding. - Vue.js (v2+) including Vuex and Vue Router. - SCSS/SASS and Bootstrap 5. **Tooling & Process** - Git and GitHub — branching, pull requests, and GitHub Actions CI/CD. - Docker — comfortable working in containerised local environments. - Strong English communication skills — written and verbal, for async collaboration across timezones. - Experience working with legacy code alongside modern patterns.