Eric Barreto
🇧🇷 recife, brazil · working remote
software engineer @ pasito (yc s22) · information systems @ cin ufpe
I'm a software engineer from Recife, Brazil. I like building products end to end, from the database schema to the last pixel, and I care a lot about the unglamorous parts: reliability, observability and the tools that make a team faster.
Right now I work at Pasito (YC S22), on the platform that reaches employees about their benefits across email, SMS, Slack and Teams. On the side I'm building Trevo, an AI marketing agent for small businesses in Brazil.
I use this site to write about things I find interesting and to keep a log of what I'm up to.
reach out:github ↗linkedin ↗
- Jul 2026 – presentSoftware Engineer @ Pasito
YC S22, AI agents for insurance and benefits. I work on Communications, the platform that has delivered 460k+ emails and 47k+ SMS to 100k+ employees across 92 companies.
- Led the redesign of the campaigns experience, from creation to results, with a review and approval flow and presets for open enrollment, new hires and terminations.
- Took the platform multi-channel (Slack and Microsoft Teams alongside email and SMS) behind a provider-agnostic messaging layer.
- Isolated the highest-traffic send and click paths as volume grew from 36k messages in 2024 to 272k in the first nine months of 2026, and built monitoring that grades every send.
- Built agentic QA tooling that walks a real browser through a ticket's acceptance criteria and returns a pass/fail report with video proof.
New York · remotepasito.ai ↗ - May 2026 – Jul 2026Software Engineer @ Push Operations
Workforce management for hospitality: scheduling, payroll, time and attendance. PHP/Laravel backend and React frontend.
- Designed and shipped the product analytics foundation for scheduling with Mixpanel, extended to auto scheduling, shift swaps, time off and employee onboarding.
- The first week of data showed only 13% of schedules met the 14-day notice Fair Workweek laws require, turning an unquantified compliance risk into a roadmap item.
- Delivered backend work for Draft Schedules: scoped publish/unpublish endpoints and publish notifications in a legacy Laravel 4.2 codebase.
Vancouver · remotepushoperations.com ↗ - Apr 2025 – May 2026Software Engineer @ Amigo Tech
Healthtech and fintech products for clinics, backed by a $33M Series A. Worked on architecture, real-time infrastructure and payments.
- Amigo Care: built the real-time messaging core of an AI-powered patient CRM, including agent and department routing, automated confirmations and Meta's official WhatsApp API with Embedded Signup.
- AmigoPay: secure billing, installment flows and payment automation for medical financial operations.
- Took part in backend and infrastructure decisions using Socket.IO, Redis, SQL and AWS.
Recife · on-siteamigotech.com.br ↗ - Aug 2024 – Apr 2025Junior Software Engineer @ Amigo Tech
Features and maintenance across the clinic, scheduling and CRM platforms.
- Amigo Clinic: new features for the core medical platform's clinic workflows.
- Agende Mais and Agende Aí: patient journeys, lead capture, sales funnels and branded online booking.
- Amigo Care: built the chat interface for live WhatsApp conversations with patients.
Recife · on-siteamigotech.com.br ↗ - Nov 2023 – Jul 2024Full Stack Developer @ CITi UFPE
Student-run software company at CIn UFPE. Real client projects in agile squads.
- Built full-stack apps with React, Next.js, TypeScript, Node.js, Express and Prisma, documented with Swagger and containerized with Docker.
- Worked in Scrum/Kanban with bi-weekly sprints and code review.
Recife · part-timeciti.org.br ↗
A chat-first AI marketing agent for Brazilian small businesses. You say what you want (more people in the store) and it plans, writes and runs the campaign.
A free mentorship program that helps first-year students get into programming through real projects. Born in João Pessoa, PB; I lead it at CIn UFPE and built its website.
An agent that reads the WhatsApp messages doctors get, detects shift offers and checks them against the doctor's schedule to decide whether they can take it.
An on-call agent built with LangGraph. Given an alert, it triages, pulls metrics, logs and deploy history, plans from runbooks, asks a human before anything risky, then validates the fix and writes the incident report.
An accounting assistant: upload a PDF, Excel or CSV and chat with your financial data about revenue, expenses, taxes and trends.
Generates Instagram images and captions with AI and schedules them straight to the account. Built with a team of four; I focused on the backend.
- Universidade Federal de Pernambuco (UFPE)2023 –
B.S. in Information Systems · Centro de Informática (CIn)
latest writing
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full log →Started building this site: a place for my work, some writing and a log like this one.