Proof01
Complex business systems
Commission, tax, invoicing, payment, document-processing, and role-aware workflows built around explicit business rules.
Active chapterOpening system
Full-stack engineering across marketplace infrastructure, financial workflows, automation, analytics, integrations, and product interfaces.
01 / Evidence
Three recurring forms of proof, expressed as mechanisms rather than claims.
Proof01
Commission, tax, invoicing, payment, document-processing, and role-aware workflows built around explicit business rules.
Proof02
Systems carried from data models and service boundaries through product interfaces, delivery, and production behavior.
Proof03
Translation, release, analytics, import, and content tooling that turns repeated operational work into durable workflows.
02 / Working systems
Each record becomes a technical exhibit: architecture, behavior, and implementation context advance together.
0107 / Featured system
A production-ready, privacy-focused web analytics platform with an integrated AI 'Data Analyst' that uses Text-to-SQL to answer natural language questions about your data. Built with TypeScript, Express.js, React, and PostgreSQL.
Enter case study0207 / Featured system
A standalone REST microservice for multi-jurisdiction tax calculation and commission computation. Handles US sales-tax stacking, EU VAT, UK three-tier VAT, and Canadian GST/HST - all backed by decimal.js for zero floating-point rounding errors.
Enter case study0307 / Featured system
A production-ready rate limiting solution implementing Fixed Window Counter and Sliding Window Log algorithms from scratch with pluggable storage backends, per-client configuration, and tests that prove exactly where the fixed window fails.
Enter case study0407 / Featured system
A collaborative task management application with teams, real-time sync, live notifications, and role-based access - built with Next.js 15 and Convex to explore reactive database subscriptions and event-driven communication patterns.
Enter case study0507 / Featured system
A fully modular e-commerce platform built as a Turborepo monorepo with a Fastify backend, Astro storefront (React islands), React + Vite admin panel, and three shared packages - featuring dynamic RBAC, convention-based route auto-registration, and background job processing.
Enter case study0607 / Featured system
A production-ready microservices architecture with 5 NestJS services (API Gateway, Auth, Users, Products, Payments) communicating entirely through RabbitMQ events, each with its own PostgreSQL database, deployed on Kubernetes with full CI/CD.
Enter case study0707 / Featured system
A complete production-grade e-commerce platform for jewelry retail - two Next.js frontends (customer storefront with Material-UI + admin dashboard with Tailwind CSS), an Express.js API, Stripe payment processing, transactional emails via Brevo, and automated PDF invoice generation.
Enter case study0107 / Featured system
A production-ready, privacy-focused web analytics platform with an integrated AI 'Data Analyst' that uses Text-to-SQL to answer natural language questions about your data. Built with TypeScript, Express.js, React, and PostgreSQL.
Enter case study0207 / Featured system
A standalone REST microservice for multi-jurisdiction tax calculation and commission computation. Handles US sales-tax stacking, EU VAT, UK three-tier VAT, and Canadian GST/HST - all backed by decimal.js for zero floating-point rounding errors.
Enter case study0307 / Featured system
A production-ready rate limiting solution implementing Fixed Window Counter and Sliding Window Log algorithms from scratch with pluggable storage backends, per-client configuration, and tests that prove exactly where the fixed window fails.
Enter case study0407 / Featured system
A collaborative task management application with teams, real-time sync, live notifications, and role-based access - built with Next.js 15 and Convex to explore reactive database subscriptions and event-driven communication patterns.
Enter case study0507 / Featured system
A fully modular e-commerce platform built as a Turborepo monorepo with a Fastify backend, Astro storefront (React islands), React + Vite admin panel, and three shared packages - featuring dynamic RBAC, convention-based route auto-registration, and background job processing.
Enter case study0607 / Featured system
A production-ready microservices architecture with 5 NestJS services (API Gateway, Auth, Users, Products, Payments) communicating entirely through RabbitMQ events, each with its own PostgreSQL database, deployed on Kubernetes with full CI/CD.
Enter case study0707 / Featured system
A complete production-grade e-commerce platform for jewelry retail - two Next.js frontends (customer storefront with Material-UI + admin dashboard with Tailwind CSS), an Express.js API, Stripe payment processing, transactional emails via Brevo, and automated PDF invoice generation.
Enter case study03 / Capability map
Select a domain to trace the responsibility from business behavior to operational outcome.
Selected domain
Commission calculation, tax strategies, invoicing, payments
04 / Production history
Production work spanning commerce, travel, and an enterprise banking engagement through IV Future.
01Oct 2022 / Present
Spearheading end-to-end development of enterprise-grade applications in the eCommerce and travel industries.
System responsibilitySpearhead end-to-end development of enterprise-grade applications, owning the full stack from database schema design to production deployment
05 / Closing loop
For professional correspondence or questions about my work, you can reach me by email or LinkedIn.