Open to opportunities

Roberto Mahl

@robertomahl

Message

Java backend engineer building scalable Spring Boot microservices for high‑traffic platforms.

Brazil

Message

What I'm looking for

I seek backend roles focused on Spring Boot microservices, AWS/cloud observability, and collaborative Agile teams where I can improve scalability, reliability, and developer productivity.

I am a Java back-end software engineer specializing in Spring Boot microservices, JVM performance, and relational databases. I currently contribute to a large AWS multinational project, delivering reliable, detail-oriented code under tight deadlines.

At KTO Group I rapidly onboarded and implemented critical features such as KYC, registration, and login, ensuring scalability and security for hundreds of thousands of active users. I decoupled monolithic components into Spring Boot microservices orchestrated with Kubernetes to improve maintainability and deployment agility.

Previously I worked as a Support Analyst and Full Stack Software Engineer, diagnosing complex runtime issues using CloudWatch, OpenSearch and PostgreSQL, documenting investigation procedures, and restructuring codebases to follow SOLID principles. I have experience developing ERP features using domain-driven design across services, retail, and manufacturing clients.

I am highly team-oriented, test-focused (unit and integration tests), and experienced with AWS services and observability tools. I aim to deliver production-ready systems that are maintainable, performant, and secure.

Experience

Work history, roles, and key accomplishments

Current

Java Backend Developer

Current

KTO Group

Aug 2024 - Present (1 year 10 months)

Onboarded quickly to deliver critical features and developed/maintained Spring Boot REST APIs for KYC, registration, and login supporting a high-traffic platform with hundreds of thousands of active users, improving scalability and security by decoupling monolithic components into Kubernetes-orchestrated microservices.

SQS Cloudwatch Git Java Spring Boot PostgreSQL Kubernetes REST APIs Microservices AWS S3

Support Analyst - KTO Group

Idealogic Software

Mar 2022 - Jul 2024 (2 years 4 months)

Investigated and fixed Spring Boot application bugs, monitored performance with Grafana and CloudWatch, and diagnosed runtime issues via CloudWatch/OpenSearch and PostgreSQL queries to accelerate incident resolution and reduce backlog pressure.

Spring Boot Java Grafana Amazon CloudWatch OpenSearch PostgreSQL Debugging Incident Response Log Analysis

Full Stack Software Engineer

Idealogic Software

Jan 2020 - Feb 2022 (2 years 1 month)

Restructured classes to align with SOLID principles and developed scalable ERP features using domain-driven design for clients in services, retail, and manufacturing, improving maintainability and onboarding speed.

Java Spring Boot Hibernate JPA MySQL SOLID Domain Driven Design REST APIs Refactoring

Education

Degrees, certifications, and relevant coursework

Federal University of Santa Maria

Bachelor Degree, Computer Science

2021 -

Grade: 9.19 GPA

Pursuing a Bachelor Degree in Computer Science with strong academic performance and practical experience in backend Java development and cloud technologies.