A one-person Domain-First studio for fintech architecture — DDD, hexagonal, event-driven on Java & Spring. The business model stays legible while frameworks, regulation and AI agents change underneath.
Born of 15+ years in regulated fintech — investment banking, wealth management, payment platforms — and the same chronic patterns met over and over: business logic dissolving into frameworks, modernization sold as rewrites, and lately AI agents working blind, drifting the domain with every commit. Codefreeze is the answer I built: freeze the domain as pure, versioned Java interfaces and keep everything else liquid — frameworks, cloud and AI agents included. One method, scaled across every layer: code, MCP, infra, AI. Written down as the Domain-First Rules.
Our stack
App: Java 25 · Spring Boot (Cloud Stream, Security, Data) · Hibernate · Resilience4j; Spock, Cucumber BDD, WireMock, Spring Cloud Contract; Azure (AKS, Event Hubs, Cosmos DB) + AWS; React. Self-hosted platform, all IaC (Terraform/Terragrunt): Proxmox VE, ZFS/TrueNAS, MikroTik RouterOS as code (VLANs, WireGuard, firewall); Vault (Raft, PKI, mTLS), Consul, Nomad (VM + bare-metal), Keycloak SSO; GitLab + Nomad CI runners, Nexus, MinIO, PostgreSQL, Kafka, Traefik; Grafana + Loki/Tempo/Mimir + Alloy; Cloudflare (DNS, Pages) at the edge; OpenClaw multi-agent AI ops with MCP.
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