About | Guy Romelle Magayano
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About

The senior engineering profile behind the work.

I'm Guy, a senior software engineer who turns product pressure into dependable web systems.

I work where product surfaces, platform constraints, and release pressure meet. The useful work is usually not another shiny rewrite; it is making the system easier to ship, operate, and explain.

My background spans public-sector WordPress systems, high traffic publishing, headless commerce, SaaS tooling, and independent consulting. The pattern is consistent: clarify the architecture, tighten the release path, and leave teams with something maintainable.

This page is the short version of that operating history: where I have worked, what I focus on, and the principles I bring into senior engineering conversations.

The full public profile lives on LinkedIn instead of a downloadable resume artifact.

Selected experience

A curated view of the most recent operating contexts before the full history. Every detail comes from the same verified experience record.
  1. 01.

    2023 - Present

    Founder and Principal Consultant

    Stack Market Labs

    Lead an independent consulting practice focused on platform modernization, operational tooling, release safety, and product engineering work across live business systems.

    Led software development across 3 simultaneous client projects spanning 4 business domains, supporting 3-4 monthly releases without disruptive rewrites.

  2. 02.

    2024 - 2025

    Full Stack Developer / Consultant

    IONA Commerce

    Delivered localized commerce storefront work across Next.js, Sanity, and commercetools with emphasis on revenue-critical flows, performance, testing, and CMS alignment.

    Delivered PLP, PDP, cart, checkout, and account flows for a localized storefront across 35+ online markets.

  3. 03.

    2023 - 2023

    Senior WordPress Engineer

    X-Team

    Modernized WordPress VIP publishing systems for high-traffic media brands, improving React modules, performance, release confidence, and developer onboarding.

    Modernized WordPress VIP plugins and blocks with refactoring and Webpack builds, trimming asset payload by 10% to 20% across 2 high-traffic publishing brands.

Work history

The experience timeline lives here so employers and clients can review the same operating history in one place.
  1. 2023 - Present

    Stack Market Labs

    Founder and Principal Consultant

    Lead an independent consulting practice focused on platform modernization, operational tooling, release safety, and product engineering work across live business systems.

    • Led software development across 3 simultaneous client projects spanning 4 business domains, supporting 3-4 monthly releases without disruptive rewrites.
    • Overhauled event-driven workflows with replay tooling and resolved 15 critical payment reconciliation issues within the first month of one engagement.
    • Modernized 6 legacy admin workflows with automated tests, CI gates, and release checks, cutting critical post-release bugs by 50%.
  2. 2024 - 2025

    IONA Commerce

    Full Stack Developer / Consultant

    Delivered localized commerce storefront work across Next.js, Sanity, and commercetools with emphasis on revenue-critical flows, performance, testing, and CMS alignment.

    • Delivered PLP, PDP, cart, checkout, and account flows for a localized storefront across 35+ online markets.
    • Tightened validation, retry behavior, and server-side pricing checks across 4 revenue-critical funnels, reducing recurring checkout and promotion support load by 20% to 35%.
    • Applied ISR and route-level code splitting on PLP, PDP, and campaign templates, lifting Lighthouse scores by 8 to 12 points and reducing LCP by 15% to 25%.
  3. 2023 - 2023

    X-Team

    Senior WordPress Engineer

    Modernized WordPress VIP publishing systems for high-traffic media brands, improving React modules, performance, release confidence, and developer onboarding.

    • Modernized WordPress VIP plugins and blocks with refactoring and Webpack builds, trimming asset payload by 10% to 20% across 2 high-traffic publishing brands.
    • Engineered reusable React-based video modules that improved mobile storytelling and increased video play rates by 15%.
    • Established PHPUnit, Cypress, and CI gates across critical publishing flows while reducing release and support friction by 20% to 30%.
  4. 2020 - 2023

    Epic Design Labs (via MultiplyMii)

    Team Lead / Senior Full Stack Engineer

    Led architecture and full-stack delivery across multi-tenant SaaS, SEO analytics, GraphQL product systems, and headless commerce platforms.

    • Directed system architecture and code reviews across three teams, improving code quality scores by 15% and cutting critical bugs by 45%.
    • Led the AWS-backed delivery of a multi-tenant SEO platform handling millions of URLs monthly, lowering crawl intervention by 40%.
    • Defined headless commerce architecture across BigCommerce, Optimizely, and Gatsby.js, lifting Lighthouse scores by 8 to 15 points and cutting editorial handoffs by 30% to 50%.
  5. 2019 - 2020

    MAKE Interactive

    Full Stack Developer / WordPress Engineer

    Built WordPress and full-stack product systems across performance optimization, CRM integration, reusable React modules, and content-heavy platform work.

    • Strengthened WordPress performance with Redis, CDN, and asset optimizations, improving cache efficiency by 15% to 30%, Lighthouse by 10 to 18 points, and LCP by 15% to 30%.
    • Replaced manual CRM handoffs with a Salesforce integration using WordPress REST API endpoints, queued sync, retries, deduplication, and admin logs, reducing common sync intervention by 40% to 60%.
    • Developed 15 reusable React SaaS modules for authentication, user profiles, and data visualization, improving maintainability and team velocity while pushing test coverage to 90%.
  6. 2019 - 2019

    Orth Enterprises, LLC

    Web Developer (Freelance)

    Delivered scoped freelance web work across Hugo static sites and targeted Shopify storefront customizations with an emphasis on maintainable implementation.

    • Delivered freelance web work across Hugo static-site builds and scoped Shopify customizations during the same engagement window.
    • Used reusable templates and partials to support maintainable page delivery and faster repeated implementation across content-driven pages.
    • Extended Shopify behavior through targeted storefront changes without pushing the client into unnecessary platform rework.
  7. 2019 - 2019

    Outsourcing Wizards

    WordPress Developer

    Built reusable WordPress solutions for property-focused websites with plugin architecture, Gutenberg blocks, search behavior, and map-based discovery flows.

    • Built reusable WordPress solutions for property sites, including a domain-specific plugin with AJAX and REST endpoints, Leaflet.js maps, and Gutenberg blocks.
    • Improved editor self-service and reduced repeated bespoke build work through reusable block patterns and a shared theme foundation.
    • Helped make property search and map-based discovery faster and more repeatable across multiple client deployments.
  8. 2018 - 2018

    Krush Digital

    Website Designer / Website Developer

    Supported distributed website delivery across frontend implementation, hosting operations, amendment cycles, and client reporting in a remote UK-time workflow.

    • Supported distributed website delivery across hosting operations, frontend implementation, and client amendment cycles in a UK-time workflow.
    • Handled recurring PSD-to-web implementation and revision work while maintaining structured daily reporting on blockers, output, and support needs.
    • Kept infrastructure-side setup, domain work, and page delivery aligned so operational tasks did not become launch blockers.
  9. 2014 - 2018

    Infosoft Studio

    WordPress Engineer

    Built and maintained long-lived WordPress systems for public-sector websites, with strong emphasis on accessibility, security, SEO, and maintenance automation.

    • Raised accessibility scores by 10 to 20 points with WCAG-aligned patterns across priority public-information templates.
    • Reduced manual maintenance by 20% to 35% through role reviews, reusable modules, and WP-CLI automation.
    • Lowered outage and support friction by 20% to 30% while improving consistency across long-lived government portal workflows.

Working principles

The rules that matter most once a codebase, workflow, or product team starts to grow.
  1. 01.

    Start with the system decisions that make delivery easier later.

  2. 02.

    Keep abstractions only when they reduce complexity and create leverage.

  3. 03.

    Treat performance and accessibility as part of the customer experience.

  4. 04.

    Automate the checks that protect launches, releases, and reputation.

  5. 05.

    Document decisions so teams can move faster after handoff.

Public proof before the conversation

A compact read on the records behind this profile: work history, case studies, lab work, and credentials.

2014

first shipped professional systems

9

role and consulting chapters

1

case-study records

1

lab and credential proof points

Focus areas

The kinds of product and platform work I am usually brought into when systems need sharper structure, safer delivery, or clearer ownership.
  • Full-Stack Platform Engineering That Helps Teams Ship Faster
  • E-Commerce and CMS Architecture Built for Growth and Change
  • Performance and Release Reliability Customers Can Feel
  • Testing and Quality Systems That Reduce Delivery Risk
  • Technical Leadership That Creates Clarity and Momentum
  • Accessibility and SEO That Strengthen Reach From Day One

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