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Achievements

Achievement: Pull Sharkx3Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: YOLOAchievement: Arctic Code Vault Contributor

Achievements

Achievement: Pull Sharkx3Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: YOLOAchievement: Arctic Code Vault Contributor

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ElioNeto/README.md
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👨‍💻 About Me

Software Engineer & Solutions Architect with experience at IBM, where I worked on Cloud-Native Architecture and Enterprise System Modernization — including Itaú's Core Banking migration from IBM Z Mainframe to AWS. Currently building and shipping new things.

  • 🏗️ Designed polyglot microservices with Go, Java, and Kotlin at scale
  • 🏦 Mainframe-to-Cloud migration handling 5M+ daily transactions and 15,000 TPS
  • ⚡ Reduced system latency from 850ms → 120ms through Go & JVM optimizations
  • 💰 Achieved 67% cost reduction via efficient distributed service design
  • 🦀 Passionate about Rust, Database Internals, System Design, and AI tooling
  • 📍 Santa Catarina, Brazil

Note: Until March 2026, professional work at IBM/Itaú was done via a GitHub Enterprise account. Contributions here reflect personal projects and open-source work.

🛠️ Tech Stack

Languages

Go Java Kotlin Rust TypeScript Python C#

Frameworks & Runtimes

Spring Boot Micronaut Gin Fiber Ktor

Cloud & Infrastructure

AWS Kubernetes Docker Terraform

Databases & Messaging

PostgreSQL DynamoDB Redis Kafka

APIs & Patterns

gRPC GraphQL REST Mainframe

🔥 Featured Projects

🗄️ ApexStore

Rust · LSM-Tree · Storage Engine
High-performance embedded Key-Value Store built from scratch with DashMap MemTable, SSTable auto-repair, WAL, and TLS support. Designed to outperform SQLite in write-heavy workloads.

⚡ Vyx Framework

Go · IPC · Apache Arrow · Full-Stack
Polyglot full-stack framework with a Go Core Orchestrator, annotation-based routing, and inter-process communication via Unix Domain Sockets + Apache Arrow.

🏦 Mainframe to Cloud Migration

Go · AWS · COBOL · Microservices
Enterprise documentation of IBM Z Mainframe modernization to cloud-native architecture — 5M daily txns, 15K TPS, Go + Java microservices.

🌐 Open Finance Pix API

Java 17 · Spring Boot · Kafka · JWT
REST API simulating Open Finance Brazil (Phase 3) Pix payment initiation standards, with Kafka event streaming and Docker.

☀️ AWS Serverless Template

Terraform · Lambda · DynamoDB · API Gateway
Opinionated AWS Serverless boilerplate with modular Terraform, built for legacy system modernization. Production-ready IaC from day one.

🦀 Rust System Tools

Rust · CLI · Systems Programming
Collection of high-performance CLI tools: log analyzer, performance monitor, and process manager — built for developer productivity.

🚀 Go REST & GraphQL Boilerplates

Go · chi / gqlgen · PostgreSQL · JWT
Two production-ready Go API templates (REST + GraphQL) with SOLID principles, structured logging, and Docker. Great starting points for new services.

📱 Android Webcam

Kotlin · Jetpack Compose · Go
Use your Android phone as a high-quality, low-latency webcam. Android app (Kotlin + Jetpack Compose) + desktop client (Go) connected over the local network.

📊 GitHub Stats

GitHub Streak
Contribution Graph

📫 Let's Connect

💡 Open to new opportunities in Go, Java, Kotlin, Cloud Architecture & System Design

Pinned Loading

  1. ApexStore ApexStore Public

    Rust LSM-Tree storage engine with DashMap MemTable, SSTable auto-repair, and TLS support. Designed for embedding in applications that outgrow SQLite.

    Rust 5

  2. vyx vyx Public

    A high-performance polyglot full-stack framework with a Go Core Orchestrator, annotation-based routing, and IPC via Unix Domain Sockets + Apache Arrow.

    Go 1

  3. agnostikos agnostikos Public

    AgnosticOS: A developer-focused Linux distro with a hybrid package manager written in Go

    Go 1

  4. kora kora Public

    Kora — A 2D game engine for Android with Go core and KScript scripting language

    Go 1

  5. teamcode teamcode Public

    AI coding assistant with agent swarm capabilities — based on opencode (MIT)

    TypeScript 1 1