OPEN TO WORK

SEAN CONNOLLY

SOFTWARE ENGINEER

I build high-performing websites and web apps that scale and stay stable.

Lead Software Engineer • 20+ production sites

Performance + technical SEO focus

WordPress • React • PHP • JavaScript • SQL

UK • Open to remote/hybrid

ABOUT ME

I’m a full-stack software engineer with a passion for building scalable, high-performance web applications. With experience leading development teams and delivering 20+ production sites, I specialise in WordPress, React, and performance optimisation.

My background combines technical expertise with leadership skills developed through RAF training and competitive athletics. I graduated with first-class honours in Computer Science and have spent years refining my craft in both freelance and agency environments.

I thrive on solving complex problems, optimising site performance, and mentoring junior developers. When I’m not coding, you’ll find me exploring new technologies or pushing my limits in the gym.

Key Highlights

First-class honours in Computer Science
#1 design award for university capstone project
Lead Software Engineer managing 20+ production WordPress sites
RAF training background bringing discipline and teamwork to development
Performance specialist with focus on Core Web Vitals and technical SEO

SKILLS & EXPERTISE

Proficient

Intermediate

Learning

HTML5 CSS3 JavaScript PHP SQL Python Lua Java Kotlin C# C++ Go Dart

WordPress WooCommerce Elementor Avada React Node.js Express Laravel Tailwind CSS jQuery Spring Boot Flutter Godot

Custom Theme Development Child Themes Custom Plugins Hooks (Actions & Filters) Custom Post Types & Taxonomies Template Hierarchy ACF (Advanced Custom Fields) Gutenberg Blocks (Integration) Script Optimisation (Defer/Delay/Unload) REST API (Consumption) WP-CLI Custom Gutenberg Block Development Headless WordPress

Technical SEO On-Page SEO Metadata Optimisation Structured Content & Internal Linking Core Web Vitals (LCP/CLS/INP) Asset Optimisation (WebP/AVIF) Caching & Optimisation (WP Rocket) Script Management (Asset CleanUp) Consent Management (Complianz) Redirects & Broken Link Remediation Schema Markup (Implementation) Log File SEO

Git GitHub VS Code Chrome DevTools Linux Hosting Management cPanel Postman MySQL Figma Docker Firebase AWS CI/CD (Basic) Nginx/Apache Tuning Infrastructure as Code

WooCommerce Configuration Product & Category Architecture Checkout UX Improvements Ticketing with WooCommerce Products Payments Troubleshooting Shipping & Tax Rules (Setup) Subscriptions/Memberships

Third-Party API Integration WooCommerce Hooks for Integrations WordPress REST API (Build/Extend) Webhooks Authentication (OAuth/JWT) Basics

MySQL Database Optimisation (Basic) PostgreSQL MongoDB

WordPress Security Hardening Updates, Patch Management & Backups Cookie & Consent Compliance (UK/EU) Role-Based Access (WordPress) Vulnerability Triage (Basic) Application Security (OWASP Basics)

Core Strengths

🎯 Technical Leadership

💬 Stakeholder Communication

🔧 Problem Solving & Debugging

⚡ Performance Optimisation

🚀 Adaptable & Solution-Driven

📈 SEO Strategy & Implementation

🧩 Systems Thinking

🧠 Analytical, Evidence-Driven Decisions

⏱️ Project & Time Management

FEATURED PROJECTS

Client Work

GLO Holiday Club

Full website build for a holiday membership club. Developed custom layouts, responsive design, and seamless user experience. Delivered as part of my role at Opus 4 Marketing.

WordPress Elementor Custom CSS PHP

Live Site

Client Work

Euro Tyres Coalville

End-to-end project: branding, design, full site development, and SEO implementation. Created a professional online presence for a local tyre business from scratch.

WordPress Branding SEO Custom Design

Live Site

Open Source

Next.js Dashboard Starter

A clean, secure, and scalable dashboard template built with modern technologies. Designed as a foundation for SaaS apps, CRMs, admin dashboards, or internal tools.

Next.js 14 Prisma 7 NextAuth PostgreSQL

GitHub

Personal Project

3D Browser FPS Game

A fully functional 3D first-person shooter developed entirely for the web using THREE.js. Features immersive graphics and smooth gameplay, all built from scratch to run in the browser.

THREE.js JavaScript WebGL HTML/CSS

Watch Demo