JULIAN RUBINO
█
Available for collaboration
$ cat about.txt
I'm very passionate about what I do. Although my role
is SRE/GRE, in reality, I wear a lot of hats — DevOps,
Developer, IT, Security Engineer and more.
I work with Cosmos L1 chains, EVM and non-EVM networks,
deploying smart contracts, operating nodes, running
validators, and building dApps across multiple chains.
I've built internal tools like multichain faucets,
communication bots, testnet swap dApps, and custom
metrics exporters. I manage infra on GCP, AWS, and
Hetzner bare metal — always focused on automation,
cost reduction, and getting my hands dirty with
everything from protocol stress testing to K8s clusters.
Certified: Terraform Associate · CKA · SumoLogic · RedHat
Omnichain Blockchain Protocol — Cosmos L1 connecting L1 & L2 networks
GRE wearing many hats — SRE, DevOps, Developer, Security Engineer. Operating multiple chain nodes including validators and RPCs. Building internal tools like a multichain faucet, communication bots, testnet swap dApp, and custom metrics exporters. Managing infra across GCP, AWS, and Hetzner bare-metal with focus on cost optimization and automation via Terraform and Ansible. Protocol-level stress testing and localnet deploy automation.
Bitcoin Staking & Shared Security Protocol
Architecting cloud infrastructure for a protocol bringing Bitcoin's economic security to proof-of-stake chains. Designing CI/CD pipelines, deployment automation, and monitoring for distributed validator networks and Bitcoin staking operations.
Global Mobile Gaming Company — millions of daily active users
Migrated all games from bare-metal to cloud infrastructure. Built a complete, reliable, and secure cloud environment to handle millions of requests and users for top-grossing mobile games.
Cloud-native PaaS Platform
Owned the design, build, monitoring, and expansion of the PaaS (OpenShift) platform. Delivered a fully featured and secure platform with DevSecOps pipelines managing multi-tenant cloud-agnostic infrastructure.
Cryptocurrency Exchange & Fintech Platform
Managed, automated, and maintained multi-cloud infrastructure on AWS and GCloud. Operated BSC, Bitcoin, and Ethereum nodes for a crypto exchange serving thousands of users.
Supply Chain Technology Platform
Developed an internal CI/CD web application using MERN stack integrated with infrastructure. Managed and deployed infra on AWS using Terraform and Ansible, running production Kubernetes clusters for 300+ microservices.
Full-stack Web Applications
Developed full-stack web applications for local clients using the MERN stack. End-to-end delivery from design to deployment.
1st place hackathon project — a cross-chain token dispersion dApp that lets users send tokens to multiple wallets across different blockchains in a single transaction. Built the marketing site, dApp frontend, and Solidity smart contracts end-to-end, leveraging omnichain messaging for seamless cross-chain transfers.
Hackathon-winning on-chain gaming dApp where users can bet and compete against other players in real-time minigames using any token on any connected blockchain. Features cross-chain wagering, trustless settlement via smart contracts, and a slick frontend that abstracts away chain complexity — players just pick a game, place a bet, and play.
Led the infrastructure and DevOps efforts for the digital transformation of a central bank in Colombia. Designed and deployed secure, highly available cloud environments to support the modernization of core banking systems, ensuring compliance with financial regulations while enabling scalable digital services for millions of citizens.
Purpose-built chaos engineering and stress testing toolkit designed to push blockchain networks to their absolute limits. Simulates high-throughput transaction floods, mempool saturation, validator edge cases, and network partitions to identify bottlenecks and breaking points before they happen in production.
Intelligent notification and paging bot integrated with Slack that routes critical alerts and actionable events to the right on-call engineers and external operators/partners. Supports configurable escalation policies, one-click acknowledgment, and automated runbook linking — turning noisy alerts into clear, actionable notifications.
Comprehensive load and performance testing infrastructure using Locust and k6 to simulate thousands of concurrent users and transactions. Designed reusable test scenarios, automated execution pipelines, and real-time dashboards to validate system capacity, identify regression bottlenecks, and ensure SLAs are met under peak traffic conditions.
Internal developer tool that dispenses testnet tokens across multiple blockchain networks. Built to accelerate developer workflows and testing across EVM and Cosmos chains with rate limiting, wallet verification, and automatic balance management.
Built a full internal CI/CD web application using MERN stack integrated with infrastructure. Managed production Kubernetes clusters running 300+ microservices with Terraform and Ansible.
$ echo "Let's build something amazing together"
Let's build something
amazing together.
Julian Rubino is a Staff Engineer and Senior Site Reliability Engineer (SRE) based in Argentina, specializing in DevOps, cloud infrastructure, blockchain technology, and cross-chain protocols. With 8+ years of experience, Julian has worked across multiple industries including blockchain, gaming, fintech, and enterprise cloud services.
Infrastructure & Cloud: Kubernetes, Docker, Terraform (Certified Associate), Ansible, AWS, Google Cloud Platform (GCP), Hetzner bare-metal, Helm, ArgoCD, OpenShift, Crossplane, Spacelift, DigitalOcean, Cloudflare.
Blockchain: Cosmos SDK, Tendermint, EVM chains, non-EVM chains, Bitcoin, Solidity, smart contract development, dApp development, node operations, validator operations, on-chain governance, DeFi protocols, cross-chain interoperability, lending protocols.
Languages: Go (Golang), Python, TypeScript, JavaScript, Rust, Bash, Shell scripting.
DevOps & Security: CI/CD pipelines, GitHub Actions, GitLab CI/CD, Jenkins, Prometheus, Grafana, Loki, Datadog, New Relic, SumoLogic, Vault, SAST, DAST, IAM, Zero Trust Architecture, container security, vulnerability management, secrets management, bug bounty programs.
Monitoring & Observability: On-chain monitoring, custom metrics exporters, Prometheus, Grafana, Loki, Vector, Datadog, Hypernative, New Relic, SumoLogic.
Other: Load testing (Locust, k6), chaos engineering, FinOps, cloud migration, bare-metal to cloud, microservices architecture, MERN stack, full-stack development.
Systems Engineering — Universidad del Salvador, Argentina
Sr. Site Reliability Engineer at an omnichain blockchain protocol (Cosmos L1 connecting L1 and L2 networks). Operating multiple chain nodes, validators, RPCs. Building internal tools including multichain faucet, communication bots, testnet swap dApp, custom metrics exporters. Managing infrastructure on GCP, AWS, Hetzner bare-metal. Terraform and Ansible automation. Protocol stress testing and localnet automation.
Sr. DevOps & Solutions Architect at a Bitcoin staking and shared security protocol. Cloud infrastructure architecture, CI/CD pipelines, deployment automation, monitoring for distributed validator networks.
Sr. Site Reliability Engineer at a global mobile gaming company with millions of daily active users. Migrated games from bare-metal to cloud infrastructure.
Sr. Software Engineer at a cloud-native PaaS platform. OpenShift platform design, DevSecOps pipelines, multi-tenant cloud-agnostic infrastructure.
SSr. Site Reliability Engineer at a cryptocurrency exchange and fintech platform. Multi-cloud infrastructure, BSC, Bitcoin, and Ethereum node operations.
Site Reliability Engineer at a supply chain technology platform. Internal CI/CD web application, production Kubernetes clusters for 300+ microservices.
Freelance Web Developer building full-stack applications with MERN stack.
UniSend (unisend.finance) — 1st place hackathon winner. Cross-chain token dispersion dApp for sending tokens to multiple wallets across different blockchains.
BetZillah — 1st place hackathon winner. On-chain gaming dApp with cross-chain wagering and trustless settlement.
Central Bank Digitalization — Digital transformation of a central bank in Colombia.
Blockchain Chaos & Stress Testing — Chaos engineering toolkit for pushing blockchain networks to their limits.
Ops Notification Bot — Intelligent Slack-integrated paging and alerting bot.
Load Testing Framework — Performance testing infrastructure using Locust and k6.
Multichain Internal Faucet — Developer tool dispensing testnet tokens across EVM and Cosmos chains.
In-house CI/CD Platform — Full-stack CI/CD web application managing 300+ microservices.
Email: julian.rubino0@gmail.com
GitHub: github.com/julianrubino
LinkedIn: linkedin.com/in/julianrubino
Location: Argentina (Remote worldwide)