TAMAYOTCHI

Senior Backend Engineer at Instaleap, a last-mile logistics and e-commerce platform that helps retailers grow their digital channels profitably. Instaleap was acquired by Instacart in 2026.

• Developing and optimizing scalable systems for last-mile logistics using design patterns and best coding practices.
• Building horizontally scalable systems with Terraform, PostgreSQL, and AWS.
• Optimizing processes and queries for improved performance, stability, and speed.
• Debugging and resolving critical issues, designing new features, and innovating workflows.
• Developing algorithms for delivery optimizations.
• Collaborating with cross-functional teams and mentoring junior engineers.

Prezio is an Elixir-powered web experience for tracking product prices across stores and making faster buying decisions.

• Captures live product listings with best-price badges, store links, update timestamps, and comparable offers.
• Keeps the interface simple: products are easy to scan and external purchase links remain one click away.
• Built with Elixir and runs as a dedicated public product at prezio.tamayotchi.com.

Nativo Studio is an internal Phoenix LiveView project-management system for handling projects, payments, inventory, extras, and PDF invoicing.

• Tracks active projects with real-time payment progress, showing total value, paid amount, balance, and pending balance in a single dashboard.
• Manages project extras, inventory items, calendar events, and expenses alongside core project data.
• Generates PDF invoices and project extras documents from the same interface, with Kamal deployment and SQLite backup support.

Zapenu is a menu-commerce platform that lets hospitality brands launch digital menus, capture orders, and control their guest experience from one place.

• Composed of three tightly integrated apps: a back-office console for brands, a multi-tenant API for catalog and orders, and a customer-facing menu with adaptive UI.
• Supports omnichannel ordering including dine-in, pickup, delivery, and WhatsApp ordering flows with payment integration baked in.
• Features a drag-and-drop menu builder with multi-image uploads, option builders, tiered pricing, and live preview tools.
• Generates QR codes per table so guests can scan, browse, and order directly from their phones.
• Uses Cloudflare Workers and smart caching for edge performance, Supabase for authentication and data, and Mercado Pago for payment processing.

Tamayotchi is a personal Phoenix-powered space for investments, writing, experiments, and private portfolio telemetry.

• Password-gated financial sections keep sensitive balances private while preserving a public homepage.
• Provider detail pages, salary counter, blog publishing, and static SPA support live in one cohesive interface.
• Designed with a cyber-terminal visual language, responsive layouts, and subtle interaction details.

WhatsApp Reminders is a WhatsApp assistant that creates natural-language reminders and sends the reminder back through WhatsApp when it is due.

• Parses reminder requests from WhatsApp messages using OpenAI tool calls and stores the scheduled reminder.
• Supports voice-message transcription with Whisper so reminders can be created from audio as well as text.
• Includes a Rust scheduler that finds due reminders and sends WhatsApp template notifications.

CodTracker Bot is a Discord bot for tracking Call of Duty Warzone performance and showing player stats directly inside chat.

• Registers Discord users with their Call of Duty username so players can request their own stats with a simple command.
• Fetches Warzone data from the Call of Duty API and renders wins, global K/D, time played, games played, daily K/D, and kills.
• Presents results as Discord embeds so the stats are easy to scan while staying in the server conversation.