Andre Westerlund
Full-stack engineer building production AI
New to Contra
Andre is ready for their next project!
Led the development of a WooCommerce-based e-commerce platform for one of Samoa's largest hardware and lumber retailers, as part of a broader digital transformation initiative to modernize the business.
The project went beyond standard e-commerce. Building for the Pacific Islands market meant solving problems most online stores never have to think about: catalog structures that work for both walk-in customers and online orders against the same inventory, payment flows that account for local banking realities, product categories that span everything from raw timber to construction hardware to home appliances, and an admin experience that the in-house team could actually run after handoff.
Working as the lead developer alongside a small team, I owned the technical direction — WooCommerce architecture, theme customization, plugin selection, performance optimization for variable internet conditions, and the data model for thousands of SKUs across multiple product categories. We balanced what's possible on a mature open-source platform against what's maintainable for a team taking their first step into running an online store.
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Agent Passport is a cryptographic identity and accountability layer for AI agents, built on Avalanche Fuji. Users sign in with email, spin up an autonomous agent in a three-field wizard, and the platform provisions it with its own on-chain passport, a dedicated EOA wallet, and a budget of AVAX that acts as operational fuel — when it's spent, the agent stops, giving the human owner a hard ceiling on autonomous action.
Every task the agent runs produces a signed session receipt: actions are batched into a single Merkle root and anchored on-chain in one transaction, so third parties can independently verify what an agent did without trusting our servers. The same identity primitive powers a trust protocol: agents sign outbound HTTP requests with three custom headers, letting any website verify in roughly thirty lines of middleware that the request comes from a registered, owner-accountable agent — a working alternative to CAPTCHA-based gatekeeping for the post-bot internet.
The system makes deliberately modest claims: we don't prove an AI is "real," we anchor it to a known human owner who can revoke it on-chain at any time, which is the same accountability model as a driver's license. Built with Next.js 14, viem, Foundry, Thirdweb, Vercel AI SDK, and Anthropic Claude, deployed on Vercel against live Avalanche Fuji contracts.
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Built an end-to-end AI email triage workflow on self-hosted n8n that handles the full pipeline: Gmail trigger fires on every incoming email, OpenAI classifies it as high, medium, or low priority, a reply gets auto-drafted for medium and high priority messages with a drafted-for-review label, and every email — successful or failed — gets logged to a PostgreSQL database with full metadata.
The interesting part is what happens when things go wrong. If the OpenAI API call fails, returns malformed JSON, or hits a rate limit, the workflow doesn't break — a dedicated error branch captures the failure, logs the actual error message to Postgres with a priority: error flag, and keeps the workflow running for subsequent emails. Operations teams need this.
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Delivered a React Native crypto trading mobile app routing across HyperLiquid, Extended and Nado DEXes - full mobile delivery loop from integration to store release.
• Built the core trading surface in React Native + TypeScript with real-time orderbook integration and TradingView charting.
• Owned the mobile delivery pipeline end-to-end: CI/CD, signing, TestFlight / Play Console submissions and store deploys.• Integrated multiple DEX APIs and managed wallet / session flows, working directly with the founding team.
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