What I Build
01 Flagship marketing sites and creative web experiences
02 Cross-platform apps (web, mobile, desktop) with modern stacks (Flutter, Kotlin Multiplatform, React Native, Tauri)
03 Payment and crypto integrations (on-chain, sidechains, Lightning, agent-to-agent payments)
04 AI-powered and agentic workflows integrated into real products (internal tools, dashboards, chatbots)
Selected Work
Marketplace Platform
Piko is a horizontal marketplace that allows anyone to offer services, sell products, list properties, vehicles, rentals, and pets, and find what they need. It uses AI-powered search to connect supply and demand intuitively, with direct WhatsApp contact for frictionless communication.
Bitcoin / Liquid Infrastructure
Built components for the TDEX ecosystem powering peer-to-peer atomic swap trading on the Liquid sidechain.
LLM Product
Crypto-focused assistant with top-up, payments, swaps, and practical Q&A flows in a production environment.
Approach
Delivery agnostic to tools and platforms, using AI and automation where they add value while keeping architecture, security, UX, and maintainability firmly human-led.
Discover
Understand product goals, constraints, users, and the business model before committing to implementation details.
Architect
Choose the right stack across web, mobile, desktop, AI, and payments, then design for long-term maintainability.
Ship & Iterate
Deliver production-ready releases, instrument the system, and improve continuously with real usage feedback.
About
I am Stephane Roche, a senior product engineer with 10+ years across web, mobile, and desktop platforms. My work includes deep crypto infrastructure, payment rails, and AI workflow integration into production systems. Astral Horizon Labs is a lean, US-based studio, allowing senior-level delivery with more accessible pricing than large agencies while keeping execution direct and accountable.
Contact
Share your product stage, goals, and constraints, and you'll get a direct technical response.