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I'm Alex, and I love building delightful web apps.

I specialize in modern UI architecture, real-time interfaces, and developer-friendly systems—mostly with Svelte / SvelteKit, TypeScript, and Node.js.

I've worked on production systems ranging from consumer-facing applications to developer tools and blockchain-enabled platforms. My experience includes owning complex frontends, designing APIs, integrating real-time data flows, and shipping features used by thousands of users in high-stakes environments, most recently at Radix DLT.

I care deeply about how software feels to use. Performance, clarity, and trust matter more to me than shipping features for their own sake. I enjoy working close to product thinking, questioning requirements, and finding the smallest solution that actually solves the problem.

Recently, I've been building and shipping my own products, contributing to open-source, and exploring how to design systems that scale—technically and cognitively. I'm especially interested in teams that value craft, ownership, and long-term thinking over buzzwords.

Portfolio

A few things I’ve built recently.

Open source

A quick timeline of recent public open-source activity. Click on a milestone for details.

Resume

Product and frontend engineer with full-stack and smart contract experience. Selected roles: encryptSIM, Radix DLT, Cora DeFi, ConsenSys.

  1. 2026 — PRESENT

    Product Engineer

    encryptSIM
    Remote
    • Own the technical direction for a privacy-focused eSIM platform, working across product, frontend architecture, backend integration, payments, and deployment.
    • Lead a rebuild of the customer experience, including search/package selection, purchase UX, SEO/device content, and operational reliability.
    • Collaborate directly with the founder on product strategy, technical trade-offs, and roadmap decisions, turning ambiguous product goals into shipped features.
    SvelteKitTypeScriptNode.js/Python integrationAPIspaymentsCloudflare/VercelGitHub Actions
  2. OCT 2019 — APR 2025

    Frontend Engineer / Full-Stack Engineer

    Radix DLT Ltd
    Remote
    • Built and maintained production Svelte/TypeScript applications across the Radix ecosystem, including dashboard.radixdlt.com and radquest.io.
    • Led development of consumer-facing JavaScript libraries used by developers building on the Radix platform.
    • Built the Radix desktop wallet for token/account management, transaction flows, and secure user interactions.
    • Collaborated with product, design, and engineering stakeholders to ship polished user-facing experiences in a complex technical domain.
    • Contributed to code reviews, technical discussions, frontend quality, and maintainable architecture across multiple applications.
    TypeScriptJavaScriptSvelteUI architectureWeb3EthereumSoliditySmart Contracts
  3. DEC 2021 — MAR 2022

    Smart Contract Developer

    Cora DeFi
    Remote
    • Implemented Solidity smart contracts for a DeFi lending protocol enabling loans without liquidation risk.
    • Worked with Hardhat and diamond contract architecture to support upgradeable smart contract systems.
    SolidityHardhatEthereumDiamond Contracts
  4. JUL 2018 — OCT 2019

    Backend Software Engineer

    ConsenSys
    London · United Kingdom
    • Built backend APIs and microservices for Komgo, an enterprise-grade commodity trade finance platform.
    • Implemented blockchain data interaction, smart contract integrations, and robust testing suites for production services.
    Node.jsTypeScriptDockerAWSMongoDBRabbitMQQuorumTruffleWeb3.js
  1. 2011 — 2017

    MSc in Computer Engineering

    Lund Faculty of Engineering
    Sweden

Contact

Currently available for freelance projects! Send a short message about what you’re building and what “done” looks like.