Portfolio

A selection of AI projects. Each one is framed the same way: the problem, the solution, and the stack that made it work.

Cruiser Aviation - Part 1: The Decision (A Year of Debt, and Why AWS)

An European flight-school SaaS rebuilt greenfield on AWS in 11 days, demoting a year of accumulated structural debt to a requirements document and an ETL source.

Next.jsTypeScriptAWS CDKAurora Serverless v2Amazon CognitoAWS Fargate
Cruiser Aviation - WhatsApp Assistant & Scheduler

A production WhatsApp conversational assistant and scheduling automation for a flight school, where members check balances, buy hour packages, pay invoices, and submit weekly availability in Romanian or English - with the LLM explicitly kept out of every financial transaction.

AWS LambdaAWS SNSAWS End User Messaging SocialAmazon DynamoDBAmazon AuroraRDS Data API
Share Wings - Multi-Brand Aircraft Dealership Platform

Four products - a multilingual marketing site, an agentic AI sales concierge, a HubSpot-replacement CRM, and a post-sale customer portal - for a Swiss aircraft dealership, shipped as one Next.js app on one Postgres.

Next.js 16TypeScriptPorsche Design SystemStoryblok CMSSupabaseDrizzle ORM
Customer Support X-ray v2 - From Broadcast to Sniper

Turns a viral AI teardown tool into a targeted lead machine: cheap tech-fingerprint qualification feeds a Claude-powered pipeline that finds, scores, and ranks the exact e-commerce stores most likely to buy - all surfaced in a team dashboard backed by live conversation listening.

Next.js 16App RouterTypeScriptTailwind v4shadcnAnthropic Claude
Cruiser Aviation Platform - AWS Rebuild

A full rebuild of a flight-school management platform on AWS, with a strict Next.js 16 module convention, a pure FIFO hours ledger, dual-country billing, and a WhatsApp self-service bot - all wired together without a single long-lived AWS key.

Next.js 16App RouterTypeScriptReact Server ComponentsServer ActionsECS Fargate ARM64
AI-Native Instagram Publishing Pipeline

A production-grade system that turns uploaded photos into a curated, auto-scheduled, auto-published Instagram feed - three Claude agents for the judgment calls, deterministic code for everything that must be exact.

Next.js 16React 19TypeScriptSupabasePostgres + RLSDB Webhooks
Content Automation v2 - Deleting 2,400 Lines and a Class of Bugs

Deleted a Redis-backed Railway worker and BullMQ entirely by turning Postgres into the job queue, cutting ~2,400 lines, ~85% of scheduled invocations, and a whole class of silent distributed-systems bugs.

Next.js 16React 19.2TypeScriptVercel CronSupabasePostgres
Customer Support X-ray - The Outreach Strategy

A closed-loop outbound system that sources e-commerce stores, qualifies them cheaply, runs an AI teardown of their support tickets, and emails each owner a personalized card linking to their own result - with every move logged to a team dashboard.

Next.js 16App RouterTypeScriptTailwind v4shadcnAnthropic Claude
Customer Support X-ray

A free tool that reads a store's public support pages and mirrors back how an AI agent would handle their top tickets - grounded replies, honest cost and coverage estimates, and a shareable result card. Built so every use is its own distribution.

Next.js 16TypeScriptTailwind v4shadcn/uiClaude (Sonnet)next/og
Cruiser Aviation Platform - AI Document Pipeline & Self-Auditing Logbook

An AWS-native aviation platform rebuild featuring a Claude-powered document extraction pipeline that hit 100% rating recall on production licenses, plus a flight logbook that audits itself against GPS telemetry and Hobbs meter physics.

AWSAmazon BedrockClaude OpusClaude SonnetNext.js 16ECS
Autonomous Job-Hunt Engine

An end-to-end agentic system that runs an entire job-search funnel - discovering, scoring, tailoring, submitting, handling recruiter replies, and even placing screening phone calls - instrumented so every action is logged, gated, and reconcilable to the cent.

Next.js 16React 19TypeScriptTailwind v4shadcn/uiSupabase

Ask about Julian Walder

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Hi! I'm Julian Walder's assistant. Ask me anything about his work, projects, or background in AI.