Lucio Callegare
@luciocallegare
Backend developer at ITTI Digital who integrated Ueno Bank payment data across mobile apps and payment services.
ArgentinaWhat I'm looking for
At ITTI Digital, I developed data integration for transactions and QR/NFC payments between Ueno Bank and its mobile application. I built payment services with Kotlin and Spring Boot, Fastify, and Go, deployed applications on AWS, and stored audit data in MongoDB.
At Copilot Innovations, I integrated LLM models into APIs and web applications, and connected conversational flows to WhatsApp and Voiceflow bots. Earlier, at IBM, I integrated business data and chatbot flows to automate customer service, and worked on migrating legacy Java APIs to NodeJS.
Experience
Work history, roles, and key accomplishments
Backend Developer
ITTI Digital
Feb 2025 - Sep 2026 (1 year 7 months)
Developed data integration for transactions and QR/NFC payments between Ueno Bank and its mobile app. Built services in Kotlin, Spring Boot, Fastify, and Go, deployed on AWS with MongoDB for audit data.
Fullstack Developer
Copilot Innovations
Mar 2024 - Feb 2025 (11 months)
Integrated LLM models into APIs built with NodeJS and Python (Flask) alongside NextJS frontends. Applied Kanban and Scrum methodologies while working with international clients.
Integrated business data through APIs (microservices) in NodeJS with ExpressJS, connected to a chatbot conversational flow built with IBM Watson technology. Handled, stored, and normalized business data using NodeJS, MongoDB, and Amazon SQS and SNS.
Backend Web Developer
Aplay América
Mar 2021 - Jan 2022 (10 months)
Used the MERN stack (NodeJS, MongoDB, React) to integrate and develop web pages and services for digital media, deployed on Heroku. Integrated data obtained through real-time web scraping, exposing it via APIs for frontend visualization.
Education
Degrees, certifications, and relevant coursework
Universidad CAECE
Systems Engineering, Systems Engineering
2019 - 2024
Pursued a degree in Systems Engineering, specializing in fullstack development and data science.
IBM
Watsonx.ai Technical Sales Intermediate, Artificial Intelligence
2023 - 2023
Completed the Watsonx.ai Technical Sales Intermediate certification.
Amazon Web Services Training and Certification
AWS Certified Cloud Practitioner, Cloud Computing
2022 - 2022
Earned the AWS Certified Cloud Practitioner certification.
MITx
6.00.2x: Introduction to Computational Thinking and Data Science, Data Science
2020 - 2020
Completed the course 6.00.2x: Introduction to Computational Thinking and Data Science.
University of Cambridge ESOL Examinations
Certificate of Proficiency in English, English Language
2013 - 2013
Earned the Certificate of Proficiency in English.
Tech stack
Software and tools used professionally
Availability
Location
ArgentinaAuthorized to work in
Salary expectations
Social media
Job categories
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