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Matjaž Korošec

@matjakoroec

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Frontend and full-stack engineer who builds AI into products. Remote since 2005.

Philippines

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What I'm looking for

A fully remote product team where I own the front of the product, design file to production, including the AI features users touch every day. React, Next.js, TypeScript, Vue and Nuxt, with Node and Postgres behind. Long term, full-time or a contract through my company koroCode. I keep your team's hours from Manila. Can start October 26, 2026.

Start at matjazkorosec.com. The whole page is the CV. There is a block game at the top, and further down an Ask the crab box that matches your question to an answer without calling any AI service.

25 years on the web. I led a frontend team of 5 at Parsek, built a 40-component design system at Better, and spent the last stretch on a shared Nuxt frontend for 12 brands with around 7 million monthly players.

I have worked remotely since 2005 and fully remotely since 2024, so async work and written handoffs are just how I work. I live in Manila, hold an EU passport and work whatever hours your team keeps, European hours included.

Experience

Work history, roles, and key accomplishments

Current

Founder & Web Developer

Current

koroCode

Sep 2026 - Present (1 month)

My own company again, fully remote from Manila. I take frontend, full-stack and AI product work on contract. First build: matjazkorosec.com, a block-breaker on my own canvas engine and a crab that answers questions about me with a sentence-embedding model running in the browser, no API.

Next.js Nuxt.Js AI assisted Development Tailwind Claude Code React Vue.Js AI Product Development

Senior Software Engineer

Engage Factory

Mar 2025 - Aug 2026 (1 year 5 months)

Built features in Nuxt UI and Tailwind Variants across 12 international casino brands sharing one Nuxt frontend, for 7M+ players a month, and reviewed pull requests to keep shared code consistent. Tracked down performance and rendering issues, tuning SSR, lazy-loading and asset delivery to keep load times down on high-traffic pages.

Nuxt UI Tailwind Variants Nuxt Vue.Js SSR Performance Optimization Code Review Claude Code Playwright FFMPEG

Founder & AI Product Engineer

koroCode

Sep 2024 - Feb 2025 (5 months)

Took frontend, full-stack and AI product contracts from Manila for teams in Europe, the UK, the US, Canada and Australia. Built matjazkorosec.com, a career site presented as a game and short cartoon stories, using Next.js and TypeScript.

Next.js TypeScript React AI Agents Claude Code Codex CMS Frontend Full Stack

Senior Frontend Developer

Better.care

Jan 2021 - Aug 2024 (3 years 7 months)

Established a Design System that improved UI consistency across 5 projects and cut the time to build new screens by about a third. Aligned 3 departments around a shared integration framework and saw 3 major projects through to delivery. Cut load times by 25% by refining frontend code, which brought bounce rates down 30%.

Angular Material Design Storybook Style Dictionary Design Systems Frontend Development Performance Optimization

Frontend Developer

1o.io (Katalys)

Feb 2019 - May 2022 (3 years 3 months)

Built and ran campaign pages and landing sites for US clients, lifting conversion rates by 20%. Reworked layouts for smaller screens, and mobile usage rose 40%.

Vue.Js Apostrophe CMS Frontend Development Responsive Design Conversion Rate Optimization

Head of Frontend Development

Parsek.com

May 2016 - Dec 2020 (4 years 7 months)

Led and mentored a team of 5 frontend engineers through the company's shift from agency branded sites to medical applications. Introduced agile practices to the frontend team, shortening delivery cycles. Rebuilt key screens in the medical apps for accessibility, fixing keyboard navigation and contrast problems.

Team Leadership Mentorship Agile Accessibility Frontend Development Medical Applications

Frontend Developer

Astina AG

May 2014 - Jan 2015 (8 months)

Delivered frontend work for Lindt, Red Bull, ABB and Fujifilm: semantic HTML, modular CSS and responsive Angular layouts, plus PHP integrated with Twig templates. Fixed critical production issues on live client sites to agency deadlines.

HTML CSS Angular PHP Twig Responsive Design Frontend Development

Frontend Developer

Innovatif.com

Jun 2008 - May 2014 (5 years 11 months)

Shipped 80+ brand sites on Silverstripe CMS for Slovenian and international clients, working day to day with designers, backend developers and project managers. Brought responsive, mobile-first development into the agency in 2010, as the approach was emerging and rolled it out across those projects: 25% more mobile traffic and 50% faster load times.

SilverStripe CMS Responsive Design Mobile First Frontend Development CMS