Francisco Carrillo Fullstack developer

F

Full Stack Developer

Nov 2025 - Current (9 months)

Building an AI appointment-scheduling agent for a medical practice: WhatsApp integrated with the Gemini API, handling booking, rescheduling, and cancellation through natural-language conversation, with two-way Google Calendar sync. Backend started in NestJS and migrated to Python with FastAPI to simplify the AI integration layer, currently in client testing. Also building a web platform for a local client to record and consolidate polling-station tally sheets for a municipal election — mayoral, council and parish board races — with a focus on data integrity and auditability. Angular + Supabase, deployed on Firebase Hosting.

Fullstack Developer

InAllMedia

Apr 2023 - Oct 2025 (2 years 7 months)

Banking call center application used daily by agents handling customer financial operations for a US consumer credit client. - Migrated AngularJS components to Angular 9+ as part of the team modernizing the application, improving frontend performance and maintainability - Built new business capabilities end-to-end — Spring Boot REST endpoints on existing APIs, through to the Angular screens agents used - Integrated third-party services across frontend and backend; improved stability through refactoring, bug fixing, and unit testing with JUnit

Fullstack developer

BairesDev

Mar 2021 - Jun 2023 (2 years 4 months)

ISP and utility platform for a US software provider. - Migrated legacy ISP modules to Angular 9+ as part of the team rebuilding the application as a single-page app, with full functional parity - Contributed reusable components to a shared Angular library used across multiple applications, cutting duplicated UI code between teams - Developed new REST endpoints on existing Spring Boot microservices, consuming and adapting data from internal services

Full Stack Engineer

Avalith

Feb 2020 - Feb 2021 (1 year 1 month)

Fintech and media platforms in LATAM. - Developed new functionality across Kotlin + Spring Boot microservices for credit card authorization inside an event-driven ecosystem (orchestration, authorization, audit/tracking) communicating asynchronously over Apache Kafka - Built a batch processing microservice from scratch in Groovy + Spring Boot for ATM-generated files, integrated via Kafka - Developed an Angular 9+ single-page application from scratch for a content management platform - Extended and debugged a Node.js loan calculation service for an Argentine credit union, plus backend features in Laravel with MongoDB and MySQL

Software Developer

ioet Inc.

Oct 2015 - Feb 2020 (4 years 5 months)

Restaurant and food delivery technology for US clients. - Maintained and extended Spring-based applications for restaurant kitchen management systems, resolving production bugs and adding functionality - Added REST endpoints and AngularJS components to existing services within microservices architectures - Built React dashboards for data analysis and network visualization with the team - Developed new REST endpoints and backend features on existing Django applications, including bug resolution - Automated record management and operational tasks with Python scripts

Francisco Carrillo

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Francisco Carrillo