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A technical, productivity-focused software engineer and entrepreneur with over 17 years of professional experience building scalable systems (2008–Present). I started programming at age 13 out of pure curiosity about how things work, an early passion that evolved into a career building everything from marketing automation platforms to DeFi protocols.

As founder of Bulldesk (acquired 2021), I developed strong product intuition and business skills that complements my technical skills. My background in Business Administration/Finance (BBA) gives me unique insight when building fintech and DeFi solutions.

I combine deep expertise in both traditional backend development and blockchain engineering (Rust/Solana or EVM/Solidity) to create secure, high-performance applications. Passionate about clean code, rigorous testing, and solving real-world problems.

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

Core Competencies

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
• Coding Agents orchestration - Testing Claude, Codex and OpenCode on my daily workflow.

Professional Experience

Career Timeline: 12+ years documented (2013–Present) - 17+ years total including pre-2013 freelance work

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
• JavaScript 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, JavaScript, 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, JavaScript, 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
• Open Source: Active contributor to various PHP and Rust projects (github.com/gabrielkoerich)

Interests & Values

• Finance & Investing: Value investing principles (Graham, Buffett), DeFi protocol analysis, yield protocols & strategies
• Productivity Systems: Markdown for Everything, Things 3, automations, + agents workflows
• Personal Finance: Beancount for double-entry accounting
• Continuous Learning: Always exploring new technologies and paradigms. At this point in life I know I can learn anything I want.
• Philosophy: Free markets, individual liberty, building things that matter. Prove your worth through action and results. Always deliver value.

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

Last updated: February 2026