Daniel Cross. Lead Mobile Engineer, ex-MetaMask, now building on Solana.

Projects

Browse the live app · connecting a wallet needs the full site, browser extensions do not inject into embeds.

Open full app

Football Alpha

Founder and creator of Football Alpha, a revenue-backed football player exchange on Solana where fans buy shares in real footballers, earn cash dividends when they perform, and sell as their value rises. Building the platform end-to-end: Anchor (Rust) programs with an SPL mint per player and USDC settlement, a Next.js web app, NestJS services, and Privy-embedded wallets that keep the chain invisible to users.

SolanaRustAnchorNext.jsNestJS

MetaMask

Shipped features to MetaMask's mobile wallet, the self-custody wallet trusted by 30M+ users to move billions of dollars in crypto. Worked on the React Native app powering everyday wallet interactions: sending, swapping, and connecting to dapps.

React NativeWeb3Wallet

App Store

Ahlsell

Tech lead (via Hackberry) on the React Native app for Ahlsell, the Nordics' leading distributor of plumbing, electrical, and tool supplies. The app is a webshop in your pocket: product search, barcode scanning, order lists, and checkout for tradespeople on site, shipped to the App Store and Google Play across Sweden, Norway, and Finland.

React NativeExpoTypeScript

App Store

Safe Haven

A school behaviour management platform: a React/TypeScript dashboard built with Vite, Zustand, and TanStack Query, paired with an Expo mobile app, sharing types through a common package and backed by Supabase auth and database.

React NativeExpoReactTypeScriptSupabase

App StoreWebsite

Neo

A peer-to-peer payments app on Solana built with React Native and Expo: wallet creation and import, passcode security, send and request flows, and end-to-end encrypted transaction memos.

SolanaReact NativeExpoTypeScript

Component Lab

Rebuilt for the web from the original React Native source of Fact Machine, a client app.

About

Lead mobile engineer based in Stockholm, working UK/EU remote, with 8+ years building and scaling mobile and web applications. Career spans leading frontend teams, modernising legacy codebases, and shipping features to MetaMask's 30M+ user wallet. Now building Solana-based crypto products, focused on performance, maintainable architecture, and owning features end-to-end from design through release.

• The App Forge AB · Senior React Native Engineer (contract)

  Current. Building footballAlpha, a revenue-backed football player exchange on Solana.

  • Clients include Klarna, Use AI, and Fact Machine

• MetaMask · Senior React Native Engineer

  Apr 2024 – Nov 2025. Shipped features to the self-custody mobile wallet trusted by 30M+ users.

  • Implemented multi-chain support, integrating Bitcoin, Solana, and Tron into MetaMask Mobile
  • Optimised blockchain transaction handling for low-end Android devices
  • Helped adopt Expo inside the bare React Native app

• Hackberry · Tech Lead React Native (consultant)

  Aug 2022 – Apr 2024. Led transitions of legacy React Native apps to Expo and launched them across Sweden, Norway, and Finland.

  • Owned the iOS and Android release process and built CI/CD pipelines for every app
  • Shipped features and redesigns that significantly increased revenue

• Yomento · Head of Engineering

  May 2020 – Aug 2022. Oversaw all frontend development across mobile and web.

  • Designed the build and deployment architecture; led App Store and Google Play release cycles

• Booking.com · React Developer

  Oct 2018 – May 2020. Helped migrate the platform from Java/jQuery to React in an agile, UI/UX-focused team.

Skills

Get in touch

Open to both contract and full-time crypto engineering roles.

• Contract: via The App Forge AB (outside IR35, UK/EU/US remote)
• Full-time: open to senior/staff crypto roles.