Mauro Benelli Ost
Software Engineer II | Backend Engineer | Go, SQL & API Development | Cloud, Data Integration & Automation
Backend Software Engineer with 3+ years of experience building scalable APIs, data integration pipelines, and automation tools. I specialize in Go, SQL, and backend systems — with proven impact reducing manual testing from days to seconds. At WEX, I built a Go-based DSL testing platform for BizTalk and internal tooling that improved developer productivity across integration platforms. Previously, I handled large-scale ERP ↔ Salesforce integrations, processing tens of thousands of daily transactions. My work spans backend engineering, ETL pipelines, and cloud-native infrastructure on Kubernetes. Preparing to relocate to Italy and seeking opportunities in the European tech industry.
Experience
Software Development Engineer II
WEX Brasil Tech
- •Built data integration pipelines using SSIS, SSRS, and BizTalk for analytics and reporting
- •Developed a Go-based DSL testing platform, reducing manual testing from hours to seconds of execution, with a VSCode extension for improved developer experience (syntax + semantic highlighting)
- •Built internal dashboards integrating Oracle Service Cloud + Jira, improving tracking and response visibility
- •Developed internal tooling in Go and Python to improve team productivity and reliability
Data Integration Engineer
Mercanet For Sales Management
- •Designed and implemented bidirectional ERP ↔ Salesforce integrations
- •Processed tens of thousands of daily orders across multiple clients
- •Built data pipelines using T-SQL, PL/SQL, and C#
- •Implemented order-splitting logic for logistics optimization
- •Developed real-time inventory validation systems within Salesforce
Network Engineer
Assertec Serviços e Soluções
- •Built monitoring system using Go, Prometheus, and Grafana
- •Integrated with MikroTik & Ubiquiti APIs for network observability
- •Enabled proactive issue detection and improved uptime across client networks
- •Managed infrastructure for 200+ network devices
- •Maintained Linux servers and containerized internal tools
IT Technician
Prefeitura Municipal de Feliz
- •Managed IT infrastructure across public institutions
- •Implemented network security (DNS + firewall rules)
- •Maintained and repaired hundreds of machines
- •Supported city-wide network infrastructure
Skills
Programming Languages
Backend & APIs
Data & ETL
DevOps & Infrastructure
Observability & Monitoring
Kubernetes Ecosystem
Web Technologies
Development Practices
Featured Projects
GTTracker - Multi-Tenant IoT Monitoring Platform
Designed and built a production-oriented IoT monitoring platform composed of 10 Rust microservices (Axum/Tokio/SQLx) and a Next.js control plane. Implemented secure user/device JWT flows, partner-driven device adoption with template/version management, and high-throughput typed time-series ingestion with token-driven throttling and priority event paths. Built cross-service ACL and alert pipelines covering business, zone, and device scopes, including notification workflows and device activity tracking. Deployed with GitOps on Kubernetes using ArgoCD, Traefik, cert-manager, CloudNativePG/PostgreSQL, ScyllaDB, Redis, SealedSecrets, and restrictive network policies, with CI/CD automating per-service image versioning and manifest updates.
Hyprland Space Manager
Custom Hyprland overlay application written in Rust for advanced workspace management. Features a multi-page system that allows spawning and organizing multiple application windows with complete user directory isolation. Includes persistent workspace configurations that restore applications with their original launch commands, and an interactive overlay UI with customization options for seamless workflow organization.
ETL Test Automation Language
Developed a SQL-like domain-specific language written in Go for automated testing of ETL transformations in BizTalk, SSIS, and SSRS reports. Features intuitive syntax for loading data from multiple sources (databases, flat files, XML), executing SQL queries, and managing file operations with BizTalk endpoints. Designed with robust null/undefined handling for missing files and columns. Includes a fully functional Language Server Protocol (LSP) implementation for VS Code, providing IntelliSense, auto-completion, syntax highlighting, and real-time syntax validation for enhanced developer productivity.
Self-Managed Kubernetes Homelab
Built and maintain a production-grade Kubernetes cluster running on local infrastructure. Implements GitOps practices with ArgoCD for continuous deployment, automated certificate management, and high-availability storage solutions. This cluster hosts various applications including this portfolio website.
Education
Technical Degree in Information Technology
IFRS Campus Feliz
Technical education in Information Technology with focus on software development and IT infrastructure
Certifications
Docker Foundations Professional Certificate
Docker, Inc • Dec 2025
DevOps Foundations: Continuous Delivery/Continuous Integration
LinkedIn Learning • Dec 2025
Java Essential Training: Syntax and Structure
LinkedIn Learning • Dec 2025
See More Certifications
View all on LinkedIn
Languages
Portuguese
NativeEnglish
Fluent or BilingualItalian
Intermediate