👋 Hi, I'm Marios Sofokleous
I partner with growth and marketing teams to engineer high-performance web ecosystems. By bridging the gap between engineering and marketing, I build blazing-fast, headless architectures that slash customer acquisition costs (CAC), secure telemetry pipelines, and lock down mathematical technical SEO.
Engineering scalable systems that bridge code and conversion
With 8 years of experience in custom CMS development and frontend architecture, I specialize in engineering headless, SEO-optimized websites. My career began in agency environments delivering custom CMS solutions, which taught me the critical importance of aligning technical architecture with business and marketing goals.
During my time in the fintech sector, I engineered dynamic frontend architectures and proactively resolved severe, undocumented layout breaks across our RTL markets. This initiative established me as the lead technical partner for high-stakes marketing campaigns and core acquisition funnels. I also led technical SEO audits and decoupled legacy WordPress monoliths, successfully integrating proprietary CRM data pipelines and payment gateways to directly drive revenue.
Today, I focus on engineering conversion-driven web architectures using headless platforms (Strapi, Decap CMS) and modern frontends (Next.js, Astro). My core mandate is engineering for growth: delivering secure, highly optimized websites that protect telemetry data, achieve perfect Core Web Vitals, and scale programmatic SEO to maximize organic acquisition.
The modern stack for speed, technical SEO, and conversion-driven content operations
Delivering solutions across fintech and agency sectors
Freelance
Paphos, Cyprus
Architecting decoupled, high-performance web experiences and conversion-driven funnels using Next.js, Astro, and headless platforms.
srcset/sizes and native lazy-loading). Engineered Real User Monitoring (RUM) to correlate speed with conversion rates by injecting live web-vitals telemetry directly into the dataLayer. Furthermore, architected a WordPress real estate platform (200+ properties), overcoming constrained shared hosting by deploying Cloudflare Edge caching and automated image processing to guarantee elite 95+ mobile Lighthouse Performance scores.HTML, enforcing strict ARIA standards, and optimizing UI legibility. Replaced AJAX-based filtering with indexable page routes, and structured custom data using Advanced Custom Fields (ACF), automated JSON-LD schemas, and XML sitemaps to maximize organic search visibility.Google Tag Manager (GTM), preserving attribution data without blocking the main CPU thread. Integrated CookieYes with Google Consent Mode v2 via GTM, utilizing cookie-less pings to maintain behavioral modeling under stringent EU privacy laws.dataLayer payloads to segment lead tracking, routing behavioral indicators to Google Analytics 4 (GA4) while structuring encrypted user_data schemas for ad network APIs. Secured data pipelines by embedding native HubSpot CRM scripts, implementing strict Zod validation, and deploying anti-scraping obfuscation alongside honeypot spam protection.View Transition API) to ensure third-party marketing telemetry and consent managers remained perfectly stable across routes. Authored custom build scripts to compile scoped Sass into dynamic RTL stylesheets for global market localization.Coolify to deploy full-stack decoupled environments (Strapi/Next.js). Established webhook-driven CI/CD pipelines to Netlify Edge, ensuring zero-downtime deployments and enabling rapid, autonomous marketing iterations.Next.js, Astro, TypeScript, Google Tag Manager, Google Analytics 4, HubSpot CRM, Strapi, Cloudflare, Netlify, Coolify, WordPress, Advanced Custom Fields, Decap CMS, Tailwind CSS, GSAP, Zod, CookieYes, web-vitals, Lighthouse
IronFX
Limassol, Cyprus
Webmors
Remote
Enigma Global
Paphos, Cyprus
Engineering scalable web applications, custom plugins, and conversion-driven platforms
A headless architectural portfolio engineered with Astro and Decap CMS. Achieved 0ms Total Blocking Time (TBT) and perfect Core Web Vitals while architecting robust GTM telemetry pipelines to track lead conversions.
Read more, about GK Architects
A production-ready decoupled architecture leveraging Next.js and Strapi. Features Static Site Generation (SSG) and automated JSON-LD schemas to deliver lightning-fast load times and optimal search visibility.
Read more, about Next.js, Strapi Portfolio Starter
A high-performance React SPA built for WordPress to eliminate legacy load-time bottlenecks. Accelerates user conversion through lag-free filtering, seamless navigation, and secure application pipelines.
Read more, about JobLister plugin
A conversion-driven property landing page engineered for high-intent lead generation. Combines heavy interactive web components with strict GDPR consent management while maintaining elite 90+ PageSpeed scores.
Read more, about Sentiero Luxury VillasWhat teams and stakeholders say about my work
Marios has been professional, collaborative, efficient, and honest. With strong technical knowledge and natural creativity, he helped us communicate our vision through a streamlined and attractive website.
A great professional, very hardworking and able to tackle any challenge on time. It was a great pleasure working with Marios. He is an amazing person, with top notch technical skills and experience in building beautiful highly responsive web applications. I wish we have the chance to work together in the nearest future Marios. I am sure you will thrive even more in the tech industry. Nowadays, is not so common to find professionals like you. All the best!
An expert in front-end web development with great attention to detail. We have worked together during several projects, and Marios has delivered beautiful and fully responsive UIs every time.
Having worked with Marios for almost a year as a fellow WordPress developer, I must say he instills positive energy in the team and is a true professional. What makes him stand out is his willingness to help others. I am impressed by his work ethic, communication skills and the fact that he easily adjusts to any given situation and can perform under pressure. I am glad to have worked with him!
Marios is one of the most hardworking persons I had the pleasure of working with, always willing to go above and beyond to complete a project assigned to him.
Sharing knowledge & technical insights
Adaptive React headings that respect any host page. Learn accessible hierarchy, dynamic level mapping, and safe CMS HTML sanitization without brittle, hardcoded levels.
Read more, about A smarter heading hierarchy for embeddable React appsBuild a secure Netlify serverless proxy to hide API keys from client-side code. Includes cross-domain setup and CORS handling.
Read more, about Protecting API keys in frontend apps with Netlify FunctionsDiscover how to self-host Supabase with Coolify, gain full control of your infrastructure, and seamlessly migrate your project from the official platform!
Read more, about How to self-host Supabase with Coolify and migrate your project from the official Supabase platformTechnical strategies and business value
In competitive markets, engineering must empower growth teams rather than block them. I build infrastructure that allows non-technical staff to launch campaigns safely and autonomously without risking the site's layout or speed. This includes setting up secure editing dashboards and configuring third-party analytics without blocking the main browser thread.
Growth engineering requires flawless tracking, but standard third-party scripts often destroy performance. I implement interaction-driven telemetry. By deferring heavy containers like Google Tag Manager until explicit user intent is detected, I ensure marketing teams retain 100% of their attribution data while the site maintains a 0ms Total Blocking Time (TBT).
Monolithic systems often force a compromise between content management ease and frontend performance. I use component-driven engineering to assemble interfaces block-by-block, decoupling the backend (Strapi, Decap CMS) from highly optimized frontends (Next.js, Astro). This gives marketing teams an intuitive publishing interface while guaranteeing zero-bloat delivery, tighter security, and scalable infrastructure without traditional database constraints.
Performance isn't an afterthought; it is the foundation of the architecture. I refuse to use bloated legacy themes or heavy page builders. Instead, I prioritize shipping zero JavaScript to the client by default using Astro or leveraging Server-Side Rendering (SSR) and Static Site Generation (SSG) with Next.js. By optimizing LCP through edge caching, automated image pipelines, and critical CSS extraction, I ensure pages load instantly, which lowers ad CPC and maximizes campaign ROI.
I deploy high-conversion headless web architectures that streamline marketing operations, protect attribution data tracking, and accelerate organic user acquisition. Let's discuss how we can scale your platform.