Alex User
@alexuser43
Senior frontend/full-stack engineer specializing in SvelteKit product UIs and scalable architecture.
PortugalWhat I'm looking for
I’m a senior frontend/full-stack engineer with 8+ years of experience building production web applications, dashboards, developer tooling, and complex product UIs. I focus on UX, maintainability, performance, and developer experience, bringing deep experience with Svelte/SvelteKit, TypeScript, JavaScript, and modern frontend architecture.
In my current role, I own the technical direction for a privacy-focused eSIM platform, spanning product, frontend architecture, backend integration, payments, and deployment. I’m leading a rebuild of the customer experience—from search and package selection to purchase UX, SEO/device content, and operational reliability—while collaborating directly with the founder to turn ambiguous goals into shipped features.
Previously, as a Frontend Engineer / Full-Stack Engineer at Radix DLT Ltd, I built and maintained production Svelte/TypeScript applications across the Radix ecosystem, including dashboard and consumer experiences. I led development of consumer-facing JavaScript libraries for developers building on the platform and contributed to the Radix desktop wallet for token/account management, transaction flows, and secure user interactions.
I’ve also built smart contract and backend systems, implementing Solidity smart contracts for a DeFi lending protocol and working with Hardhat and diamond contract architecture. Alongside this, I develop side projects like Forkly (a SvelteKit recipe-sharing platform) and a Svelte-first component development tool, continuously exploring better component tooling and Svelte 5 ergonomics.
Experience
Work history, roles, and key accomplishments
Product Engineer
EncryptSIM
Jan 2026 - Present (6 months)
Own technical direction for a privacy-focused eSIM platform, spanning frontend architecture, backend integration, payments, and deployment. Led a rebuild of the customer experience and collaborated with the founder on product strategy and roadmap decisions.
Frontend Engineer / Full-Stack Engineer
Radix DLT Ltd
Oct 2019 - Apr 2025 (5 years 6 months)
Built and maintained production Svelte/TypeScript applications across the Radix ecosystem, including dashboard and product experiences. Developed JavaScript libraries for developers and contributed to the Radix desktop wallet and frontend architecture/quality.
Built backend APIs and microservices for Komgo, an enterprise commodity trade finance platform. Implemented blockchain data interaction, smart contract integrations, and testing for production services.
Forkly Recipe Sharing App
Forkly
Built a SvelteKit recipe-sharing platform with public publishing, ingredient/nutrition handling, profiles, editing, sharing previews, and mobile UX. Designed and implemented full-stack product flows from idea to a working application with attention to usability and frontend interactions.
Svelte Component Explorer
Independent
Designed and prototyped a Svelte-first component development tool inspired by Storybook. Explored filesystem-based story discovery, typed story metadata, Vite integration, and Svelte 5 ergonomics for preview/manager architecture.
Education
Degrees, certifications, and relevant coursework
Lund University - Faculty of Engineering
Master of Science (MSc), Computer Engineering
2011 - 2017
MSc in Computer Engineering at Lund University’s Faculty of Engineering from 2011 to 2017.
Tech stack
Software and tools used professionally
Availability
Location
PortugalAuthorized to work in
Portfolio
forkly.meJob categories
Skills
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