> Markdown version of [/jobs/ext/2260459-front-end-developer-jobs-uk-careers-at-square-balloon](https://www.wearedevelopers.com/jobs/ext/2260459-front-end-developer-jobs-uk-careers-at-square-balloon). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Front End Developer Jobs UK | Careers at Square Balloon - **Company:** Square Balloon - **Location:** Greater London, UK - **Contract:** Permanent contract - **Skills:** Adobe Analytics, PHP (Programming Language), Data Analysis, Bootstrap (Software), Cascading Style Sheets (CSS), Google Analytics, Google Web Toolkits, Google Webmaster Tools, Joomla, JQuery, Web Content Accessibility Guidelines, WordPress, Google Tag Manager - **Published:** August 26, 2026 - **Apply:** https://www.collegerecruiter.com/job/2815169812-front-end-developer-jobs-uk--careers-at-square-balloon ## About the Role * Proven experience as a Front End Developer. * Proficiency in Joomla and WordPress. * Knowledge of SEO best practices and tools. * Familiarity with accessibility standards. * Excellent communication and teamwork skills. * Strong problem-solving abilities and attention to detail. ## Description Front End Developer Full Time Key Responsibilities Maintenance * Maintain Joomla & WordPress websites on a monthly basis. * Backup all websites. * Migrate websites to a test server prior to updating. * Update all plugins, modules, and components. * Update the core. * Test that the updates worked. * Migrate any data such as contact form data to ensure the live site is synchronised. * Migrate back to the live site. * Fix any issues that arise during this process. * Update PHP versions when necessary. * Report anything you can't fix to your line manager. Web Design * Create websites using a variety of tools, predominantly Joomla. * Use the YooTheme builder. * Adhere to the CSS 5-1 methodology. * Implement the BEM methodology. * Write self-documenting code and class names. * Assess and implement good design practices. * Resize images prior to upload. * Determine when to use SVGs. * Utilise CSS variables for setting and changing colours. * Use Bootstrap and other similar frameworks such as Zurb Foundation and UI Kit. * Write minimal CSS when necessary. * Develop with Vanilla JS without relying on jQuery. * PHP: * Understand basic PHP. * Read and modify PHP code to change page layouts. * Extract PHP variables from arrays or objects. * Create Joomla & WordPress overrides. * Access the WordPress loop. Accessibility * Understand accessibility, WCAG compliance, and achieving A and AA standards. * Recognise the importance of accessibility. SEO / Google Web Vitals / Google Lighthouse * Achieve high scores on Google Lighthouse. * Interpret and address Google Lighthouse feedback. * Understand technical SEO. * Install and configure Google Analytics, Matomo Analytics, Google Tag Manager, and Google Search Console. * Interpret and act on Google Search Console feedback. GDPR * Understand and comply with GDPR. Copyright * Recognise when images can and cannot be used. * Select and use placeholder images until client sign-off. * Work independently and solve problems. * Seek help when necessary. * Accept and incorporate feedback. * Strive to excel in their role. * View constructive feedback positively. * Communicate effectively in English, both written and verbal. * Ask for clarification when needed. * Maintain a positive and professional demeanour. * Attend client calls and take meeting notes when necessary. * Collaborate effectively within a team. * Communicate holiday plans in advance. * Listen attentively and take responsibility for tasks. Qualifications and Skills * Proven experience as a Front End Developer. * Proficiency in Joomla and WordPress. * Knowledge of SEO best practices and tools. * Familiarity with accessibility standards. * Excellent communication and teamwork skills. * Strong problem-solving abilities and attention to detail. Square Balloon is an equal opportunities employer and welcomes applications from all suitably qualified persons regardless of their race, sex, disability, religion/belief, sexual orientation, or age. ## Related Videos - [Web development best practices in 2021](https://www.wearedevelopers.com/videos/280-web-development-best-practices-in-2021) - [Kill Your WordPress. Ship in Minutes. Win the SEO game.](https://www.wearedevelopers.com/videos/100083-kill-your-wordpress-ship-in-minutes-win-the-seo-game) - [WeAreDevelopers LIVE - the weekly developer show with Chris Heilmann and Daniel Cranney](https://www.wearedevelopers.com/videos/1309-wearedevelopers-live-the-weekly-developer-show-with-chris-heilmann-and-daniel-cranney) - [WeAreDevelopers LIVE - Gaps in CSS, EU Accessibility Act and more!](https://www.wearedevelopers.com/videos/1314-wearedevelopers-live-gaps-in-css-eu-accessibility-act-and-more) - [Meta Harnesses: What the JS Framework Wars Teach Us About What Is Next for AI Agents](https://www.wearedevelopers.com/videos/100353-meta-harnesses-what-the-js-framework-wars-teach-us-about-what-is-next-for-ai-agents) - [Build Once, Switch Anytime: CMS Freedom with Astro Collections](https://www.wearedevelopers.com/videos/2050-build-once-switch-anytime-cms-freedom-with-astro-collections) ## Related Articles - [Frontend Developer Salary in The UK](https://www.wearedevelopers.com/magazine/233-frontend-developer-salary-in-the-uk) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Fullstack Developer Salary UK](https://www.wearedevelopers.com/magazine/251-fullstack-developer-salary-uk) - [What is a web developer?](https://www.wearedevelopers.com/magazine/18-what-is-a-web-developer) - [7 Most Popular Web Developer Jobs in Europe](https://www.wearedevelopers.com/magazine/163-7-most-popular-web-developer-jobs-in-europe)