Open to opportunities

Giuliano Testino

@giulianotestino

Backend Engineering with 7´+ years building and maintaining banking platforms with Java, Kotlin, Spring Boot, and developing distributed systems.

Argentina

Message

Backend Software Engineer with 7+ years of experience building banking, logistics, card-processing, and customer-facing platforms with Java, Kotlin, and Spring Boot. I work across distributed services, batch workflows, data integration, cloud delivery, and observability. In parallel, I design and build Reals, a pre-production Android dating app, end to end across backend, mobile, Firebase, and AWS, using AI agents as part of a structured engineering workflow.

Currently working at Santander Tecnología Argentina, I maintain and evolve distributed backend systems for card logistics and digital banking, connecting Cards, Accounts, and Customers through Apigee-secured OAuth 2.0 REST APIs.

I’m also building Reals end to end: a pre-production Android dating app with a Kotlin/Spring Boot backend, Jetpack Compose client, AWS infrastructure, and an AI-native engineering workflow. Earlier at Certant, I delivered corporate banking workflows for Itaú Uruguay and Banco Comafi across Java-based systems.

Experience

Work history, roles, and key accomplishments

Current

Founder & Software Engineer

Current

Reals

Jan 2026 - Present (7 months)

Designed a pre-production Android dating app centered on compatibility, text-first interaction, progressive profile reveal, staged conversations, and user-safety workflows. Engineered a Kotlin and Spring Boot backend on Java 21 and a Kotlin and Jetpack Compose Android app covering authentication, profiles, matchmaking, staged chats, text and audio messaging, visual decisions, scheduling, attendanc

Kotlin Spring Boot Java 21+Jetpack Compose Android AWS GitHub Actions OIDC SSM EC2 Docker S3 OpenAI Codex

Current

Software Engineer

Current

Santander Tecnologia Argentina

Mar 2022 - Present (4 years 5 months)

Maintain and evolve a nationwide distributed backend ecosystem for card logistics and digital banking, integrating with services owned by other domains through Apigee-secured OAuth 2.0 REST APIs. Designed and automated a daily workflow that blocked approximately 800 cards destroyed at branches, replacing manual operational tasks and enabling customers to request card reprints through digital chann

Java Kotlin Spring Boot REST APIs Oracle MongoDB Apigee OAuth Kibana Grafana OpenAI Codex Devin AI S3 Control M Kubernetes OpenShift GitHub Actions TypeScript NestJS

Full Stack Developer

Certant

Apr 2019 - Feb 2022 (2 years 10 months)

Delivered end-to-end corporate banking functionality for Itau Uruguay across legacy Java 4/7 applications using Java, JavaScript, jQuery, Oracle, Maven, XML-based integrations, and manually deployed WAR packages. Implemented multi-stage financial workflows covering validation, roles, approvals, guarantees, back-office operations, and external payment integrations, including 3scale-mediated service

Java JavaScript jQuery Oracle Maven XML 3scale SQL Backend Development Frontend Development

Education

Degrees, certifications, and relevant coursework

University of Buenos Aires

Bachelor of Engineering, Electronic Engineering

2013 - 2020

Pursued an Electronic Engineering degree with a focus on Signal Processing, covering coursework in signal processing, speech recognition, Markov models, adaptive and Kalman filters, cryptography, and security.