Open to opportunities

Roberto Avelino Alves Júnior

@robertoavelinoalvesj

Message

Full Stack Engineer specializing in C#/.NET and event-driven microservices with Kafka and cloud modernization.

Brazil

Message

What I'm looking for

I’m looking to build production-grade full-stack products—scalable C#/.NET and Node services, event-driven microservices with Kafka, and strong observability—while continuing to grow in React and delivering reliable outcomes in regulated, high-availability environments.

I’m a Full Stack Engineer with 4 years of experience building production-grade systems at Banco Safra, a top-tier financial institution serving 4M+ clients. I bring deep expertise in C#/.NET, Node.js, and microservices architecture, with event-driven patterns using Kafka. I work across requirements definition, architectural design, backend/frontend development, and production observability.

Over the past roles, I’ve modernized legacy systems end-to-end—led migration from .NET 3.1 to .NET 8 and moved on-premises infrastructure to AWS. I design scalable backend services and REST APIs for business-critical financial workflows across mobile, internet banking, and manager platforms. I also lead work in a microservices architecture, coordinating services by business domain while ensuring consistency across customer- and manager-facing experiences.

I’m particularly proud of practical impact: I built a fixed-income rate negotiation backend giving managers 100% autonomous control within pre-defined thresholds, eliminating back-office dependency and enabling instant approvals. I own the testing lifecycle (unit, integration, regression) as part of a shift-left culture, and I drive production observability using Dynatrace, Kibana, Grafana, and Elasticsearch for incident investigation and continuous improvement. Today, I’m expanding into React through a personal full-stack project using .NET 8 + React + SQL Server + Docker.

Experience

Work history, roles, and key accomplishments

Current

Mid-Level Full Stack Engineer

Current

Safra Bank

Nov 2025 - Present (8 months)

Designs and delivers scalable backend services and REST APIs for business-critical financial systems using C#/.NET and Node.js within a microservices, event-driven (Kafka) architecture. Leads AWS migration and production observability using Dynatrace, Kibana, Grafana, and Elasticsearch.

C .NET REST APIs Microservices Kafka AWS System Design CI CD Unit Testing Integration Testing Regression Testing Dynatrace Kibana Grafana Elasticsearch Observability

Full Stack Engineer

Safra Bank

Jun 2023 - Nov 2025 (2 years 5 months)

Designed and implemented a PIX payment integration backend using Node.js BFF and REST APIs, and automated manager onboarding via DocuSign REST API. Migrated core banking services from .NET 3.1 to .NET 8 and reduced production incidents while resolving critical security vulnerabilities within SLA.

.NET .NET 8+REST APIs BFF DocuSign REST API Facial Recognition Integration

Trainee Full Stack Developer

Safra Bank

Jun 2022 - Jun 2023 (1 year)

Contributed to onboarding and account-opening systems supporting customer acquisition, including integrations with external identity verification services. Improved internal manager-facing journeys through database query optimization and backend process parallelization, and resolved critical production issues within SLA.

Database Optimization Identity Verification SLA

Education

Degrees, certifications, and relevant coursework

ADA Tech

Full Stack Development Certificate, Full Stack Development

Activities and societies: Intensive hands-on training in Angular, C#, .NET (incl. Core/ASP.NET), Node.js, REST APIs, microservices, and event-driven architecture concepts (Kafka).

Completed a 600-hour Full Stack Development program covering Angular, backend engineering with C#/.NET, REST APIs, microservices, and modern software practices.

Universidade Federal de Mato Grosso do Sul (UFMS)

Computer Engineering (incomplete), Computer Engineering

2015 -

Activities and societies: Coursework included algorithms, data structures, systems design, distributed systems concepts, event-driven architecture, and Kafka; also covered frontend (Angular/React/TypeScript) and data/cloud topics (SQL Server, MongoDB, AWS).

Studied Computer Engineering at UFMS, completing 8 semesters before leaving the program incomplete.