André Rovira

Challenge: Member-based associations needed a unified system for members, staff, credits, inventory, and compliance paperwork.

Built: Multitenant SaaS in Elixir/Phoenix LiveView with role-based access control, a credits economy, per-location inventory, and audit trails on every movement.

Result: Live at terpsystem.com, serving 3 locations and 5,400+ registered members.

Challenge: A one-tap precision game needed live multiplayer for up to 100 players on cheap phones, with zero server cost when nobody plays.

Built: Deterministic TypeScript physics shared by client and server. Cloudflare Durable Objects relay release ticks over WebSockets and re-simulate them server-side for anti-cheat, with lobby, royale, and ranked-daily modes on D1.

Result: Live at swingpit.io and on game portals, 1,000+ daily players within the first week, running on Cloudflare's free tier.

Challenge: Mexican organizers pay 10-28% in fees and wait weeks for payouts. A fair alternative had to guarantee no seat is ever sold twice under ticket-drop load.

Built: Elixir/Phoenix LiveView platform with a GenServer per event as the seat authority (Postgres-first reservations), Oban jobs, FLAME burst compute for CFDI 4.0 invoicing, and Conekta/Stripe payments (OXXO, SPEI, cards).

Result: Production-ready on Fly.io with load-tested hold and reservation flows at 100 concurrent buyers, launching with its first events.

Challenge: Organizations needed on-demand credential generation with persistent digital verification.

Built: Multitenant SaaS handling data/photo ingestion, printable credentials with QR codes, and persistent digital card verification.

Result: Production platform serving multiple organizations with automated workflows.

Challenge: A multi-tenant VoIP carrier platform built on Kazoo (Erlang/OTP) needed new call-routing, billing, and provisioning features without disrupting live traffic.

Built: Erlang/OTP services on the Kazoo stack: callflow and billing logic over AMQP, CouchDB data model changes, and FreeSWITCH/Kamailio integration, with migration-safe rollouts.

Result: Features shipped to live carrier traffic across SIP trunks, PBX and hosted-VoIP tenants, with zero-downtime rollouts.

Challenge: Epic and Cerner EHR users needed seamless access to TigerConnect without leaving their clinical workflow.

Built: FHIR protocol integrations enabling SSO embedding within EHR platforms, with HIPAA-compliant JWT encryption using AWS KMS.

Result: Unlocked a new market segment for clinical users, now actively marketed as a product feature, on a platform processing 10M+ messages daily for 7,000+ healthcare organizations.

Challenge: A monolithic game server couldn't scale, and deploying meant physically replacing hard drives in machines.

Built: 6 domain-driven microservices with event-driven architecture, Docker-automated deployment replacing manual hard drive swaps. EGM-side SAS (Slot Accounting System) with TITO, AFT, meters, events, progressives, handpays and legacy bonusing; peripheral integration for JCM GEN5 and TransAct Epic 950 ticket printers, JCM iVIZION and UBA bill validators, button decks and touchscreens.

Result: Independent deployments per service, product expanded from 1,200+ physical machines to online casino platforms. Achieved GLI certification for USA and Canada.