Emanuel Cejas

About

Senior Product Engineer who builds and ships full SaaS end-to-end (idea → code → deploy → customers → feedback → iteration). 6 years coding and 8 SaaS products built, with 9 paying clients on LocalCenter. Selected for the Kaszek × Anthropic AI-native LATAM Hackathon (2025) to build Sesión solo in 5 days; experience includes AI agent orchestration and clinical/tax-compliance integrations using TypeScript, Angular/SvelteKit, NestJS, Postgres/pgvector, and native Rust + Tauri.

Experience

• Founder & Sole Engineer · LocalCenter2024

  Built and operate solo on NestJS + Angular + SQL Server with native TSQL stored procedures, BullMQ + ioredis queues, custom migration system, cluster-mode deploy, Docker. Full AFIP electronic invoicing integration (WSAA + WSFE) — Argentine tax authority compliance end-to-end. Angular 19 PWA with Material, ag-grid Enterprise, Leaflet maps, zxing barcode scanning, Sentry monitoring (939 + 714 commits across front/back). Self-hosted, direct client support, no middlemen.

• Founder & Sole Engineer · Sesión2026

  Built and shipped solo in 5 days at the Kaszek × Anthropic AI-native LATAM Hackathon (BUILDERS selection — ~3,000 applicants). AI unit economics: $0.14 / patient / month. Multi-model router (Sonnet 4.6 + Haiku 4.5 for 92% traffic, Opus 4.6 escalation for 8%). Crisis latency < 3 seconds. Safe-Fail layer: 41 keywords + Opus 4.6 second-pass review for clinical risk signals. Clinical co-supervisor with Claude Opus, full session note generation pipeline. SvelteKit 2 + NestJS 10 + Prisma + Postgres + self-hosted LiveKit video + WhatsApp Baileys + Mercado Pago + Stripe.

• Sole Engineer · BoletoLive2026

  Ticketing platform with payments, event management, server-side burst-deduping. 743 commits, in production. TypeScript + PostgreSQL with PLpgSQL + Docker. Independent Tauri / Rust shipping · 2026

• Independent AI / product R&D (Projects) · Self-directed (share-sharvis / localcenter agents / apps)2024 – 2026

  JARVIS (share-sharvis, public) — native multi-machine dashboard for AI coding agents. Tauri 2 + Rust + Svelte 5. localcenter-balanza-agent — production native agent reading Kretz industrial scales over serial port (custom Rust protocol). Shipped to retail clients. Other shipped / R&D · 2024–2026 agentingk — multi-tenant conversational AI over WhatsApp (Baileys + WABA), anti-ban, human handover. aurus — vertical management system with 3D visualization, real-time dashboards (closed beta). app-crossfit — coaching platform for client: 25+ modules, 139 exercises, payments, analytics. Production. marketing-engine — multi-platform (web + Flutter mobile + AI orchestration).

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