Julio Souza
@juliosouza1
I build secure, scalable core banking platforms with Java and Spring.
SpainWhat I'm looking for
I built and maintained SuperCore at 10x Banking, a cloud-native core banking platform recognised as Best of Show at Finovate Europe 2023 and deployed across Europe, Oceania, and Africa.
My work on the platform helped support Chase Bank UK and secured more than £8 billion in deposits across the UK market in 2024 through reliable, scalable microservices.
At BTG Pactual, I developed features for BTG+, which reached around one million open accounts and a 4.5+ rating in its first year. I also reduced AWS infrastructure costs by 70%—more than €70,000 annually—by implementing reactive programming with Spring WebFlux and Kotlin.
Across retail and investment banking, I’ve built backend APIs, integrations for fraud analysis and payment processors, and automated testing solutions. After a planned sabbatical to pursue personal goals, I’m returning to the industry focused on my next backend engineering challenge.
Experience
Work history, roles, and key accomplishments
Personal goal pursuit
Career Break
Jan 2025 - Jul 2026 (1 year 6 months)
Sabbatical: Planned break to achieve personal goals.
- Developed the Core Banking cloud native platform named SuperCore that was awarded the Best of Show in Finovate Europe 2023. Platform which has presence in Europe, Oceania and Africa.
- Contributed to the technical success of the platform's primary client, Chase Bank UK, to win The Best British Bank & Best Current Account Provider (among other titles) at the British Bank Awards 2023 through high
- Provided Subscription Management and Credit Worthiness backend APIs.
- Technologies: Java 15 + Maven; SpringBoot + Spring Framework; JUnit + Mockito; JPA/Hibernate; MariaDB/SQL; Scrum/Kanban; Git; GitLab.
- Developed key features for the firm’s brand new Consumer Banking application named BTG+, which achieved around 1 million open accounts and a 4,5+ overall rating in its first year.
- Saved 70% (€70,000+ EUR/year) in AWS cloud infrastructure costs at critical services peak load scenarios by implementing reactive programming using Spring Webflux with Kotlin.
- Built Integrations with internal and
- Reduced the overall processing time of the morning health check testing procedure of BTG Pactual proprietary Electronic Trading Platform by 80%, writing and optimising parallel automated test scripts.
- Troubleshooting and debugging internal and external integrations with Financial Institutions.
- Technologies: C#; OnixS .NET FIX (Financial Exchange Protocol) Engine; MSTest; Azure DevOps.
- Software solutions and automated tests for Embraer proprietary web applications.
- Technologies: Java 8 + Maven; Selenium WebDriver; PostgreSQL; Scrum/Kanban; Git.
- Software solutions and automated tests for Embraer proprietary internal web applications.
- Technologies: Java 8 + Maven; Selenium WebDriver; PostgreSQL; Scrum/Kanban; Git.
Education
Degrees, certifications, and relevant coursework
GFT Technologies
Java & AWS Developer Bootcamp
Issued Oct 2021
DIO
Reactive Programming with Spring Webflux
Issued Sep 2021
DIO
Microservices with Spring Cloud and Java
Issued Sep 2021
DIO
Advanced Java Development
Issued Sep 2021
DIO
Introduction to Hexagonal Architecture with Spring Boot and Kotlin
Issued Sep 2021
BTG Pactual
Financial Market Training | BTG Pactual Academy
Issued Oct 2020
Unifesp - Universidade Federal de São Paulo
Bachelor of Science - BS, Science and Technology
2013 - 2017
• Interdisciplinary Bachelor’s Degree with emphasis in Computer Science.
• Academic Extension Programs: Robotics Team; Games and Internet Study Center.
University of Northampton
Sandwich Degree: Bachelor of Engineering - BE, Computer Systems Engineering
2014 - 2015
Full Scholarship in the United Kingdom for 14 months through the Science Without Borders Program, granted by the Brazilian Federal Government.
University of Northampton
Pre-sessional Academic English
Issued Jul 2014
University of Cambridge
First Certificate in English (FCE)
Issued Dec 2011
Tech stack
Software and tools used professionally
Availability
Location
SpainAuthorized to work in
Salary expectations
Social media
Job categories
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