Gabriel Koerich

Senior Engineer · AI Workflows · Solana / DeFi

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Senior software engineer and entrepreneur with 13+ years of professional experience building production systems (17+ including self-taught freelance work since age 13). Currently architecting Solana DeFi at Lulo (+$100M TVL). Previously founded and sold Bulldesk (marketing automation SaaS, acquired 2021). Background in Business Administration / Finance (BBA).

Equally comfortable in traditional backend, blockchain engineering (Rust/Solana, EVM/Solidity), and modern AI tooling. I run Claude Code, Codex, and OpenCode in parallel as part of my daily workflow (orch) and help companies adopt the same.

Open to: Senior/Staff roles in AI infrastructure, DeFi, or fintech. Also available for AI consulting (strategy, implementation, training, fractional).

[email protected]
github.com/gabrielkoerich
linkedin.com/in/gabrielkoerich

Core Competencies

AI & Agent Orchestration

  • Daily user and integrator of Claude Code, Codex, and OpenCode for production engineering
  • Multi-agent orchestration — running coding agents in parallel for planning, implementation, and review (orch)
  • Automating engineering workflows: code generation, refactoring, reviews, documentation, and ops
  • AI consulting for companies — agent workflows, RAG pipelines, internal tooling, evals
  • Prompt engineering, model selection, and cost/latency trade-offs
  • AI Consulting available — strategy, hands-on implementation, team training, fractional engineering

Blockchain Engineering

  • Solana Smart Contracts (Rust, Anchor Framework)
  • EVM Smart Contracts (Solidity, Hardhat, Foundry)
  • DeFi integrations (CPI calls, modularity, composability)
  • Security-first design patterns, low level optimizations, onchain/off-chain processing and indexing & testing (unit, fuzz, prop & integration tests)

Full-Stack Development

  • Rust
  • Python
  • Node.js, TypeScript, NPM, Bun
  • Laravel
  • Vue.js, React

Databases & Infrastructure

  • MySQL (replication, optimization, indexing)
  • PostgreSQL, Redis, Beanstalkd, Pub/Sub
  • DevOps: Docker, CI/CD, GitHub Actions, Terraform, Ansible
  • Cloud: AWS, GCP, Digital Ocean, Fly.io
  • Monitoring: Cloudflare, New Relic, Datadog, Sentry, Bugsnag

Development Practices/Workflows

  • Code review & mentoring
  • Agile methodologies
  • System design & architecture
  • AI-augmented development — Claude Code, Codex, and OpenCode integrated into daily workflow via my own orch

Professional Experience

Senior Software Engineer — Lulo

November 2022 – Present

Focused on smart contract development for the DeFi protocol. Designed and implemented the protocol that grew to +$100M TVL/AUM, including a security pool that protects users against protocol hacks while generating yields, and a higher-yield pool with standard DeFi risk exposure.

Key achievements:

  • Architected the protocol + CPI integrations with major Solana protocols
  • Built comprehensive SDKs and CLIs for protocol interaction
  • Implemented rigorous unit testing (Rust) and integration testing (Anchor)
  • Developed EVM protocol integrations using Solidity, Forge, and Hardhat

Stack: Rust, Solana, Anchor, TypeScript, GitHub Actions, GCP

Solana Smart Contract Engineer / Consultant — Freelance

October 2021 – November 2022

Developed multiple Solana-based projects including:

  • NFT marketplace with custom auction mechanisms
  • Price prediction game with on-chain oracle integration
  • DeFi smart contract utilizing Orca's Whirlpool for liquidity

All projects featured:

  • Comprehensive unit and integration testing
  • Modular, composable architecture
  • Security-first design patterns
  • Typescript/Rust SDKs for client integration
  • CLI tools with GitHub Actions automation

Stack: Rust, Solana, Anchor, TypeScript, GitHub Actions

Senior Software Engineer — Covie

April 2021 – December 2021

Responsible for building integrations with insurance companies, processing high-volume policy data and claims workflows.

Stack: Symfony, Node, PostgreSQL, REST APIs

Founder — Bulldesk

September 2015 – May 2021

Founded and scaled a Marketing Automation and CRM platform — the first Brazilian software to combine Automation + CRM in one platform.

Responsibilities:

  • Built core architecture and 90% of application features from initial concept
  • Managed infrastructure, DevOps, and cloud architecture
  • Handled product development, business administration, and finance
  • Successfully exited via acquisition in 2021

Technical highlights:

  • Scale: 80M+ user requests monthly, 500M+ background jobs processed monthly
  • Infrastructure: Multi-server architecture with load balancers, separate worker servers, and real-time processing
  • Queue Systems: Optimized Beanstalkd and Redis queues with Laravel Horizon for monitoring and scaling
  • Database: MySQL master-slave replication with read replicas, query optimization, and strategic indexing for high-throughput operations
  • Workflows: Complex automation engine processing 1M+ leads through campaigns with 5-10 concurrent actions per lead
  • Real-time: Live updates and notifications using Laravel Echo, WebSockets, and Redis pub/sub

Stack: Laravel, Node, MySQL, Vue.js, Beanstalkd, Redis, Stripe, AWS

Founder / Full Stack Engineer — Algorit

June 2013 – September 2016

Founded a digital agency and software house serving clients with custom web applications and marketing solutions. I was responsible for all the software development & business administration/finance.

Stack: Laravel, Node, Typescript, Python, MySQL, Vue.js

Freelance Web Developer

2008 – 2013

Self-taught web development during university years. Built websites and web applications for small businesses and local clients while completing BBA degree.

Stack: PHP, Typescript, HTML/CSS, MySQL

Notable Projects & Achievements

  • +100M TVL Protocol: Architected DeFi protocol at Lulo with innovative dual-pool security mechanism
  • Marketing Automation at Scale: Built Bulldesk to handle millions of leads and complex automation workflows
  • Solana Ecosystem: Multiple production smart contracts including marketplaces and DeFi integrations
  • AI Orchestration: Built orch to run Claude Code, Codex, and OpenCode in parallel for engineering workflows. Now offering AI consulting for companies.
  • Open Source: Active contributor to various PHP and Rust projects (github.com/gabrielkoerich)

Education

  • BBA Finance — Universidade do Sul de Santa Catarina (2008 – 2012)
  • English Language Studies — LSI (London) (2010)

Languages

  • Portuguese: Native
  • English: Fluent (professional working proficiency)

I bridge finance and technology, building secure, scalable systems that solve real problems. From systems and automations to DeFi protocols and AI-powered workflows, I bring 17+ years of engineering experience, an entrepreneurial mindset, and a passion for clean, tested code.