Alexander Åstrand, Full-stack developer building blockchain and climate software.

Malmö · remote

React · TypeScript · Node.js, CosmWasm · Cosmos SDK · smart contracts, Nest.js · Postgres · Docker, Claude Code and other AI tools

Work

Regen Network

2025–Apr 2026

Regen Network is a public blockchain for ecological credits, built on Cosmos.

My part: features for the Regen web app and marketplace, frontend and backend, including organization profiles and role-based authorization with DaoDao.

  • TypeScript
  • React
  • Node.js
  • CosmWasm
  • Postgres
Website

EmpowerChain

2023–2024

Plastic credits needed a chain buyers can check, so Empower built one and a marketplace on top of it.

My part: I built two dApps in the EmpowerChain ecosystem, frontend and backend, with integration and unit tests.

  • Vue
  • TypeScript
  • CosmWasm
Code

WattPeak

2024

A dApp for minting and staking WattPeak tokens and swapping Cyber Solar Heroes NFTs for the Solar token.

My part: I led the development for Solar DAO and deployed the contracts on Juno, Stargaze and Osmosis.

  • Next.js
  • React
  • CosmWasm
  • Rust
Code

Hutzup

A planner for a group's board game and movie nights, with one-tap RSVP and an automatic waitlist.

My part: all of it, as my own product.

  • React
  • TypeScript
  • Supabase
  • Tailwind
Website

Hejtide

A cold-dip community in Malmö needed one phone-first place for the next dips, the calendar and a warm welcome.

My part: all of it, built for the host to edit herself.

  • Astro
  • TypeScript
  • Cloudflare
Website

Wolfpack, my Claude Code agent team

My kit of Claude Code plugins. A navigator plans each release and hands every step to an agent on its own model, with a token budget per job and a guard in front of production. This site was built with it.

My part: the whole kit, the agents, their rules and the checks they run.

  • Claude Code
  • Plugins
  • Hooks
  • Node.js

The Wolfpack kit: how my Claude Code team works

agents
29
skills
43
plugins
5
Read how the kit works
Code

How I build

  1. 1. I write the code

    TypeScript, React and Node.js day to day, CosmWasm for smart contracts. I set up the data, the tests and the deploys myself.

  2. 2. AI tools where they help

    I use Claude Code the most, with Cursor and ChatGPT alongside. Agents take the well-planned steps, with tests, and I keep the design and the tricky parts.

    How this site was built →

  3. 3. I review and ship

    I read every diff, check it on a phone and a desktop, then merge and deploy it myself.

Stack

Languages and frameworks

  • TypeScript
  • JavaScript
  • React
  • Next.js
  • Vue
  • Node.js
  • Nest.js
  • HTML
  • CSS
  • Tailwind

Data

  • SQL
  • Postgres
  • MongoDB
  • Supabase

Blockchain

  • CosmWasm
  • Cosmos SDK
  • Smart contracts
  • Blockchain indexing

Working knowledge

  • Go
  • Rust

Learning

  • Solidity

Dev tooling

  • Git
  • Docker
  • Jest
  • Vitest

Tools

  • Claude Code
  • MCP
  • Cursor
  • ChatGPT
  • Claude (app and API)

Experience

  • Apr 2026–now

    Independent projects

    Wolfpack kit, Hutzup, Hejtide

    • Claude Code
    • TypeScript
    • React
    • Supabase

  • 2025–Apr 2026

    Regen Network

    Full-stack blockchain developer

    • TypeScript
    • React
    • Node.js
    • CosmWasm
    • Postgres

  • 2024

    Solar DAO

    Lead developer, WattPeak dApp

    • Next.js
    • CosmWasm
    • Rust

  • 2023–2024

    Empower.eco

    Full-stack developer

    • Vue
    • TypeScript
    • CosmWasm

  • 2022–2024

    Medieinstitutet

    Blockchain developer programme

    • JavaScript
    • React
    • Node.js
    • Smart contracts

  • 2020–2023

    Independent crypto trader

    Self-employed

About

Alexander Åstrand

Full-stack developer in Malmö.

I came to code from sustainability studies and climate work.

I write TypeScript, React and Node.js, and use AI tools like Claude Code to ship faster.

The story →