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Graeme ByrneGB
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Graeme Byrne

@graemebyrne

Software Engineer at Nautilus Cyberneering who cut median page-load time by 40% and built production web applications across the stack.

Spain
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At Nautilus Cyberneering, I led a modular frontend migration that reduced median page-load time by 40%. I also built a shared SCSS design system and component library, documented in Storybook.

At Permisso, I built and deployed Node.js/Express services on AWS for an identity-verification product. I shipped automated recovery covering about 90% of recurring production failures and wrote tests that raised coverage above 80% on mission-critical flows.

For Future Workshops, I built the official 26th UN Tourism General Assembly website with React and Node.js/Express. The accessible, internationalised platform supported launch-day traffic of more than 3,000 concurrent users with zero downtime.

As a freelance full-stack developer, I built a production website for an accounting firm and optimized its local SEO and Core Web Vitals, reaching 95+ Lighthouse performance and SEO scores. My projects include a feature-flag platform and DevStash, a developer knowledge hub with an MCP integration.

Experience

Work history, roles, and key accomplishments

FR
Current

Freelance Fullstack Developer

Freelance

Feb 2026 - Present (9 months)

Designed and built a production website for an accounting firm using Next.js, with server-rendered/static pages, responsive UI and client enquiry functionality. Implemented local SEO and Core Web Vitals optimization, achieving 95+ Lighthouse performance and SEO scores and <1.5s LCP on mobile.

PE

Software Engineer

Permisso

Nov 2025 - Feb 2026 (3 months)

Built and deployed Node.js/Express services on AWS for an identity-verification product processing 10k+ verifications/month, handling sensitive personal data in a regulated flow. Designed and shipped automated recovery for recurring production failures, covering ~90% of failed cases and cutting manual intervention on a mission-critical flow.

FW

Fullstack Developer

Future Workshops

Oct 2025 - Nov 2025 (1 month)

Built the official 26th UN Tourism General Assembly website using React, Node.js/Express, translating Figma designs into production components alongside product, design and QA within a fixed 6-week delivery period. Developed REST endpoints and accessible, internationalised UI for delegates across 114 countries and 6 languages.

NC

Software Engineer

Nautilus Cyberneering

Aug 2023 - Nov 2025 (2 years 3 months)

Led migration to a modular frontend architecture for a large, data-dense application, reducing median page-load time by 40% through rendering and asset-delivery optimisation. Diagnosed and resolved production frontend/integration issues end-to-end, reducing mean time to resolution by ~30% from reproduction through deployment.

Education

Degrees, certifications, and relevant coursework

Scrimba logoSC

Scrimba

Full Stack Developer Career Path, Full Stack Development

Completed the Full Stack Developer Career Path in 2025.

Scrimba logoSC

Scrimba

Frontend Developer Career Path, Frontend Development

Completed the Frontend Developer Career Path in 2022.

FreeCodeCamp logoFR

FreeCodeCamp

JavaScript Data Structures & Algorithms, Computer Science

Completed the JavaScript Data Structures and Algorithms certification in 2022.

Queen's University Belfast logoQB

Queen's University Belfast

Master of Arts

Master of Arts degree from Queen's University Belfast, completed in 2011.

Ulster University logoUU

Ulster University

Bachelor of Arts

Bachelor of Arts degree from Ulster University, completed in 2010.

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