Julian Rubino

Staff Engineer · DevOps · SRE · Security · Cryptography · Blockchain

Argentina · Remote worldwide

Summary

Senior engineer with 8+ years of experience at the intersection of DevOps, SRE, security, applied cryptography, and blockchain infrastructure. I wear many hats — DevOps, developer, security engineer, IT — and I love it. I work with Cosmos L1 chains, EVM and non-EVM networks, deploying smart contracts, operating nodes and validators, hardening pipelines, designing key management and HSM/multi-sig setups, and building dApps. Certified Terraform Associate & CKA. 2x Hackathon Winner.

Senior engineer with 8+ years of experience...

Experience

Sr. DevOps Engineer

Babylon Labs · Bitcoin staking protocol

Jul 2025 — Present

DevOps, infrastructure, security, and protocol-level engineering for Babylon — bringing Bitcoin's economic security to Proof-of-Stake networks (BSNs).
Manage validator and finality provider node infrastructure across cloud and bare-metal.
Harden security across the stack, support protocol operations for self-custodial Bitcoin staking with no wrapping or bridging.

Sr. Site Reliability Engineer / Staff Engineer

Omnichain Blockchain Protocol — Cosmos L1 connecting L1 & L2 networks ZetaChain · Omnichain L1 connecting all blockchains

Sep 2023 — Present

GRE wearing many hats — SRE, DevOps, developer, security engineer.
Operating multiple chain nodes (30+ chains) including validators and RPCs.
Built internal tools: multichain faucet, communication bots, testnet swap dApp, custom metrics exporters.
Manage infra across GCP, AWS, and Hetzner bare-metal with cost optimization and Terraform/Ansible automation.
Protocol-level stress testing and localnet deploy automation.

Co-Founder & Engineering Lead

detect.ar · AI fraud detection & identity verification

2025 — Present

Co-founded an AI-powered platform for detecting scams (phishing, fake banking sites, fraudulent receipts) and verifying identity (DNI + selfie + biometric liveness) across Argentina.
Built end-to-end: cloud infrastructure, multimodal AI/ML pipelines, BCRA debtor consultation, Veraz/Equifax integration, case management dashboard, billing.
Designed SaaS go-to-market with three pricing tiers for B2C and B2B (fintech, marketplaces, customer support, legal teams).

Founder

Pet Social (petsocial.ar) · Community platform for pets

2025 — Present

Founded an integral app for pets and their owners — a digital home for every pet.
Built the entire platform: digital pet profiles, trusted services directory, donations and adoption flows, social feed.
Full-stack development, infrastructure, branding, and product strategy.

Sr. DevOps & Solutions Architect

Bitcoin Staking & Shared Security Protocol

2024 — Present

Architecting cloud infrastructure for a protocol bringing Bitcoin's economic security to proof-of-stake chains.
CI/CD pipelines, deployment automation, monitoring for distributed validator networks and Bitcoin staking operations.

Sr. Site Reliability Engineer

Global Mobile Gaming Company — millions of DAU

Apr 2022 — Apr 2023

Migrated all games from bare-metal to cloud infrastructure.
Built reliable, secure cloud environment handling millions of requests and users for top-grossing mobile games.

Sr. Software Engineer

Cloud-native PaaS Platform

Apr 2022 — Apr 2023

Owned design, build, monitoring, and expansion of an OpenShift PaaS platform.
Delivered fully featured, secure platform with DevSecOps pipelines and multi-tenant cloud-agnostic infrastructure.

SSr. Site Reliability Engineer

Cryptocurrency Exchange & Fintech Platform

Jul 2021 — Apr 2022

Managed, automated, and maintained multi-cloud infrastructure on AWS and GCloud.
Operated BSC, Bitcoin, and Ethereum nodes for an exchange serving thousands of users.

Site Reliability Engineer

Supply Chain Technology Platform

Jul 2019 — Jul 2021

Developed an internal CI/CD web application (MERN stack) integrated with infrastructure.
Managed and deployed AWS infrastructure with Terraform and Ansible.
Ran production Kubernetes clusters for 300+ microservices.

Freelance Web Developer

Full-stack Web Applications

2017 — 2020

Built full-stack web applications for clients using MERN stack — end-to-end from design to deployment.

Notable Projects & Achievements

🏆 UniSend unisend.finance · 1st Hackathon Winner

Cross-chain token dispersion dApp. Send tokens to multiple wallets across blockchains in a single transaction.

🏆 BetZillah 1st Hackathon Winner

On-chain gaming dApp where users bet and compete in real-time minigames.

Central Bank Digitalization

Led infrastructure and DevOps for the digital transformation of a central bank in Colombia.

Blockchain Chaos & Stress Testing Toolkit

Purpose-built chaos engineering toolkit to push blockchain networks to their limits.

Ops Notification Bot

Intelligent Slack-integrated paging bot.

Load Testing Framework

Performance testing infrastructure using Locust and k6.

Technical Skills

Security & Cryptography

Applied cryptography · Key management · HSM · Multi-signature · TSS · Validator security · Slashing protection · Zero Trust · IAM · Vault · Secrets management · SAST · DAST · Smart contract security · Code audits · Threat modeling · Penetration testing

Infrastructure & Cloud

Kubernetes · Docker · Terraform · Ansible · AWS · GCP · Hetzner bare-metal · Helm · ArgoCD · OpenShift · Crossplane · Spacelift · Cloudflare

Blockchain

Cosmos SDK · Tendermint · EVM & non-EVM · Bitcoin · Solidity · Smart contracts · dApp development · Node operations · Validator operations · Cross-chain protocols · DeFi · Lending protocols

Languages

Go · Python · TypeScript · JavaScript · Rust · Bash / Shell · SQL

DevOps & Monitoring

CI/CD · GitOps · GitHub Actions · GitLab CI · Jenkins · Prometheus · Grafana · Loki · Datadog · SumoLogic · DevSecOps

Other

Load testing (Locust, k6) · Chaos engineering · FinOps · Cloud migration · Bare-metal to cloud · Microservices · MERN stack · Full-stack development

Certifications

HashiCorp Certified Terraform Associate
Certified Kubernetes Administrator (CKA)
SumoLogic Certified Fundamentals & Search Master
Red Hat Delivery Specialist

Education

Systems Engineering
Universidad del Salvador, Argentina

Languages

Spanish (Native) · English (Fluent / Professional)