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Francisco Focaraccio

Software Engineer

A backend engineer who grew from writing the code into designing the distributed systems that hold it up, without losing the taste for the first part.

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About

Hello,

Senior software engineer with 12 years building software products end to end, from the backend systems that do the heavy lifting to the web apps people use, across fintech, banking and IoT.

Strongest in the .NET/C# ecosystem: microservices, event-driven architectures and cloud infrastructure on Azure and AWS, with full-stack experience in TypeScript, Angular and React.

I use AI coding agents every day across the development lifecycle, from code generation and refactoring to code review, and I have explored integrating LLM capabilities into the products I build.

12+years of experience

Francisco Focaraccio

Experience

  1. Jan 2022 — Present

    Senior Software Engineer · Mobi724

    • Built a real-time payment processing microservice for the Visa Offers Platform, receiving and processing Visa card transactions.
    • Develop .NET microservices for banking integrations, points-based payment systems and loyalty programs, using event-driven architecture with RabbitMQ on Azure.
    • Manage SQL Server databases, Azure services (App Services, Azure Functions, Container Apps, Key Vault, API Management) and CI/CD pipelines in Azure DevOps.
    • Integrated AI coding agents (Claude Code, GitHub Copilot, Cursor) into the development workflow for code generation, refactoring, debugging and code review, with human validation on every change.
    • Explored LLM integration patterns for .NET applications: prompt engineering, tool/function calling, structured outputs and agent-based workflows.
    • C#
    • .NET
    • Microservices
    • Event-Driven
    • RabbitMQ
    • Azure
    • SQL Server
    • Azure DevOps

  2. Jul 2021 — Jan 2022

    Senior Full Stack Software Engineer · Siblings Software

    • Developed and maintained the backend (.NET Core, ASP.NET) and frontend (TypeScript, React) of a web application merchants use to process customer payments and manage invoicing.
    • Built and maintained REST APIs with ASP.NET and .NET Core on top of SQL Server and PostgreSQL.
    • Contributed to the full migration of the frontend from AngularJS to Angular 12.
    • .NET Core
    • ASP.NET
    • TypeScript
    • React
    • Angular 12
    • SQL Server
    • PostgreSQL

  3. Jun 2018 — Jul 2021

    Full Stack Software Engineer · Smartmation

    • Built the backend (.NET, C#) and frontend (TypeScript, Angular) of an IoT platform for remote street lighting management, letting customers monitor, visualize and control public streetlights through an interactive map.
    • Built a WinForms desktop application from scratch for the field installation and pairing of streetlights, communicating with IoT devices through MQTT (Mosquitto).
    • Managed cloud infrastructure on Azure and AWS and containerized applications with Docker.
    • C#
    • .NET
    • TypeScript
    • Angular
    • IoT
    • MQTT
    • Azure
    • AWS
    • Docker

  4. Jan 2017 — Jun 2018

    Software Engineer · FPA Software

    • Developed and maintained .NET desktop applications (WinForms) used by banks and brokerage firms to run trading desks and back-office operations.
    • Built the installers used to package and distribute the applications to clients.
    • C#
    • .NET
    • WinForms
    • SQL Server

  5. Dec 2014 — Jan 2017

    Full Stack Software Engineer · Accenture

    • Worked full-stack on a financial and project management application for cost tracking and invoicing: backend in C# and ASP.NET MVC, frontend in AngularJS, data layer in SQL Server.
    • Worked in Scrum teams, tracking work in Jira and using Git for version control.
    • C#
    • ASP.NET MVC
    • AngularJS
    • SQL Server
    • Scrum

Projects

See all repositories

Tech Stack

Backend

  • C#
  • .NET 10
  • .NET 8
  • .NET Core
  • ASP.NET Core
  • Web API
  • REST APIs
  • JWT
  • Entity Framework
  • RabbitMQ

Architecture

  • Microservices
  • Event-Driven Architecture
  • Distributed Systems
  • Software Architecture

Frontend

  • JavaScript
  • TypeScript
  • Angular
  • React
  • HTML5
  • CSS3

Databases

  • SQL Server
  • PostgreSQL
  • MongoDB
  • Redis

AI / GenAI

  • LLM Integration
  • AI Agents
  • Prompt Engineering
  • Claude Code
  • GitHub Copilot
  • Cursor

Automation

  • n8n
  • Make

Microsoft Azure

  • App Service
  • Azure Functions
  • Azure SQL Database
  • Container Apps
  • Container Registry
  • Virtual Machines
  • API Management
  • Key Vault
  • Application Insights

AWS

  • EC2
  • RDS
  • S3
  • VPC
  • SES
  • IAM

DevOps

  • Azure DevOps
  • CI/CD
  • Docker
  • Git

Education

  1. 2009 — 2013

    Associate's Degree in Applied Computer Science

    Universidad Tecnológica Nacional (UTN)

Languages

  • Spanish

    Native

  • English

    Upper Intermediate / B2

Let's talk

I'm open to backend and architecture roles. Book a call straight into my calendar, or send me an email — I read everything.

Book a call
francisco.focaraccio@gmail.com