Selected systems

Work with substance.

Application architecture, commerce workflows, native tools and compute research. Start with Palermo for a detailed view of the engineering behind a substantial system.

Flagship case study

Palermo

Commerce engineering beyond the storefront. Identity, permissions, transactional checkout, payment recovery and inventory in one coherent system.

Read the case study

Server-owned prices, stock and payment outcomes
Sessions, RBAC and administrator passkeys
Unit, database and browser regression coverage

Next.jsTypeScriptPostgreSQLSupabaseStripe

Controlled Vercel demonstration · Synthetic data · Stripe test mode

More systems.

Sourcing platform

AussieLK

A request-based platform connecting Australian products with customers in Sri Lanka, with authentication, payment integration, request workflows and administration.

Next.jsTypeScriptPrismaStripe

Visit AussieLK

Native software · Privacy

PlainLink

A local macOS clipboard utility built with Rust and Swift/AppKit. Conservative, fixture-tested URL rules remove known tracking parameters while preserving unknown ones.

RustSwiftAppKitGitHub Actions

Explore the repository

Research · GPU compute

P.A.T.H.

Experimental prime sieving on Apple Silicon using Metal. The research summary covers architecture, validation and measured results from an M1 run.

MetalObjective-C++Apple Silicon

Read the research summary

Supporting infrastructure

Self-hosted services also inform the practice: Debian, Docker, WireGuard, Caddy routing and firewall configuration. That operational work supports application delivery and reliability.

Explore the search infrastructure

Work with HexCode

Have a system that needs serious engineering?

Preparing for launch, recovering a broken workflow, or looking for a technical partner? Start with the system and the problem.

Discuss a system