Promotz — Creator-Economy Commerce Platform
Solution Architect & Head of Technology
Promotz is a multi-tenant creator-economy commerce platform that gives creators, influencers, athletes, and brands one system to monetize an audience across four independent revenue engines: ticket-based prize-draw campaigns with capacity control and auditable winner selection, four-tier paid memberships with gated media and prorated billing, digital products with signed time-limited delivery, and affiliate storefronts with automated commission resolution and promoter payouts.
- Own end-to-end architecture and technology strategy across three applications, 35 custom domain modules, and 16 scheduled pipelines on a single shared data platform — designed as a modular monolith over a headless commerce core with bounded contexts, explicit cross-module link definitions, and workflow orchestration with compensating transactions, so all four revenue engines evolve independently without cross-domain coupling.
- Established the platform engineering standards the team builds to: workflow-only mutations, idempotency by default, documented architecture decision records, unit and integration test tiers, and machine-readable code maps for every major subsystem.
- Re-architected the high-contention checkout path from a serialized distributed lock — a measured ceiling near 20 purchases per minute — into a lock-free capacity gate combining a single-round-trip atomic in-memory admission script with a transactional relational source of truth, validated on a staged ladder of 1K → 10K → 40K → 80K purchases per minute (~1,333/sec) against hard invariants of zero oversell and zero duplicate allocations under full concurrency.
- Moved payment capture, entitlement issuance, notifications, and analytics off the synchronous request path into durable queues with dead-letter handling, exponential backoff, poison-message detection, and queue-depth-based worker autoscaling — holding payment-webhook acknowledgement under 100ms, p95 checkout under 2 seconds, and an issuance pipeline sized for ~133,000 ticket allocations per second.
- Designed the data tier for write-heavy bursts: transaction-mode proxy pooling, read replicas for reporting and admin traffic, partitioning of high-cardinality allocation tables, contention-free batch allocation via row-level skip-locking, and partial unique indexes as the final correctness backstop — with an in-product load-testing and observability harness plus an external load-generation cluster enforcing explicit release gates.
- Architected a multi-rail payments layer spanning instant bank transfers, card payments, stored credentials, and recurring subscription billing, anchored by an idempotency ledger keyed on provider event identifiers so duplicate, replayed, or out-of-order webhooks can never double-grant entitlements or double-count revenue.
- Designed the revenue-share and payout system: an immutable earnings ledger with point-in-time commission snapshots, a five-level commission resolution hierarchy, tiered settlement windows from same-day to D+15 with corresponding acceleration fees, automated split settlement, and an audited request/review/execute payout workflow protected by advisory locks against balance overdraw.
- Made money movement resilient to an inherently racy asynchronous payment rail through scheduled webhook replay, provider polling for stale records, catch-up grants for missed entitlements, refund and chargeback reversal workflows, strict separation of entitlement state from billing state, and a bounded 0.5% overflow buffer with automated refund classification for late payments.
- Built a near-real-time analytics platform — incremental event-driven aggregation with a uniqueness-constrained dedup ledger and atomic upserts, reconciled nightly by an authoritative recompute job with on-demand backfill — powering multi-dimensional revenue reporting across product, currency, partner, sales channel, geography, membership tier, and cohort with proportional multi-item attribution and historically stable point-in-time snapshots.
- Delivered revenue-driving product surfaces: a progressive volume-pricing engine that materializes discount tiers as first-class promotion records applied natively by the checkout engine, and a gated media platform with tier-based entitlement checks, collection and tag taxonomies, browser-direct resumable uploads that keep media bytes off application servers, and short-lived signed playback tokens.
- Implemented defense-in-depth for a regulated payments context: national tax-ID checksum validation, multi-checkpoint purchase-limit enforcement, mandatory idempotency keys on mutating routes, distributed single-flight guards, edge WAF with bot management and per-identity rate limiting, field-level masking of payout destinations, a role-scoped access model enforced in server actions before every read, mutation, and export, organization-scoped multi-tenancy, and passwordless-capable onboarding with hashed one-time codes and invitation-based membership.
- Led a full-platform modernization: commerce core v1 → v2 with module-based architecture and a new query graph, storefront and React major-version migration to server components and streaming, and infrastructure consolidation from fragmented managed databases and public-internet caching into a single in-VPC, proxy-pooled, replica-backed data tier.
- Established an AI-augmented engineering practice built on documentation as executable context — a versioned in-repository agent capability library, tool-protocol integrations connecting coding agents to the database, payment sandbox, cloud infrastructure, and docs, and 50+ architecture documents exposed as machine-readable code maps — governed by guardrails that keep AI-assisted throughput from trading against financial correctness.
