Rodrigo Herpich Müller

Senior Software Engineer · Farroupilha, Brazil

·github.com/r-hmuller·LinkedIn·rodrigomuller.dev

Professional summary

Senior Software Engineer with 8+ years of experience building cloud-native microservices and resilient distributed systems. Proven track record in high-volume fintech and SaaS environments, maintaining 99.9% availability for mission-critical platforms that process more than 500,000 transactions per day. Polyglot developer experienced in Java, Python, Go, and PHP, backed by ongoing Master's research into Kubernetes fault tolerance. Strong background in event-driven architecture, legacy-system modernization, and automated testing.

Technical skills

Languages
Java (17/21), Python, Go, PHP (7/8), Kotlin, JavaScript/TypeScript.
Cloud and architecture
Kubernetes, Docker, AWS (EKS, Lambda, SQS, SNS, RDS), Generative AI (LLMs), API Design, Event-Driven Architecture, Kafka, RabbitMQ, ArgoCD.
Frameworks and quality
Spring Boot, Symfony, Laravel, Flask, Angular, Vue.js, Playwright, PHPUnit, Dynatrace.

Experience

Testbox

Mar 2026 — Present

Backend Developer

Remote / US
  • Engineered automated B2B client integrations utilizing Python web scraping pipelines and custom API services.
  • Architected cost-efficient Generative AI (LLM) workflows, implementing prompt optimization and payload caching strategies to minimize token consumption costs by roughly 40%.
  • Enhanced backend resilience against transient API and network failures by implementing fault-tolerance patterns (Exponential Backoff, Circuit Breaker).

PicPay

Mar 2025 — Mar 2026

Backend Developer

Brazil
  • Engineered mission-critical financial-settlement microservices handling roughly 500,000 daily transactions with 99.9% availability using Java, Kotlin, and Spring Boot.
  • Integrated and optimized high-volume chargeback and clearing operations in direct partnership with major credit card networks.
  • Orchestrated event-driven financial flows leveraging Kafka, RabbitMQ, Kubernetes, and Dynatrace for distributed tracing.

VelV

Oct 2022 — Mar 2025

Full-Stack Developer

Portugal
  • Led the end-to-end architecture modernization of a monolithic platform for an international client, migrating to PHP 8 (Symfony) and Angular.
  • Established an automated testing culture from scratch (PHPUnit, Playwright), successfully raising and sustaining code coverage above 85%.
  • Optimized containerized development environments via Docker and built reusable UI component libraries with PrimeNG.

Petlove & Co

Sep 2021 — Oct 2022

Full-Stack Developer

Brazil
  • Engineered high-throughput polyglot microservices in Java (Spring Boot), Go (GCP Cloud Functions), and PHP (Laravel).
  • Built and scaled responsive consumer-facing web applications using Vue.js and Vuex.
  • Automated deployment lifecycles via CodeFresh CI/CD pipelines and orchestrated service clusters on Kubernetes.
  • Implemented asynchronous-messaging and decoupling patterns using AWS SQS and SNS.
  • Remediated 15+ blocking security vulnerabilities during a post-M&A platform integration, partnering with InfoSec to enable safe system internalization.

Rede Vistorias S.A.

Sep 2018 — Apr 2020

Backend Developer

Brazil
  • Engineered core third-party system integrations, including DocuSign APIs and major Brazilian ERP platforms.
  • Designed a polyglot microservices ecosystem, introducing Python (Flask) services while stabilizing legacy PHP (Symfony) systems.
  • Managed AWS cloud infrastructure (EC2, S3, RDS), container deployments with Docker, and observability via the ELK stack.

Education

Universidade Federal de Santa Catarina (UFSC)

2025 — Present

Master of Science in Computer Science

Brazil
  • Research focus: distributed-systems resilience, developing a custom Go framework for automated fault tolerance in Kubernetes environments.

Universidade Federal do Rio Grande (FURG)

2015 — 2018

Bachelor's Degree in Information Systems

Brazil
  • Undergraduate Thesis: Developed a Java SE consensus framework integrating distributed Paxos protocols (S-Paxos and BFT).