Montreal · EN / FR / GR · Building since 2021

Most people can't explain what they build. I fix that.

Web3 ghostwriter, business web designer, and AI automation consultant. I've written whitepapers for protocols managing $175M+ in TVL, built websites for businesses with zero web presence, and designed CRM systems powered by LLMs.

The market is full of people who build incredible things and can't articulate why anyone should care. That's where I come in.

What I do →Get in touch

10+DeFi Protocols

$175M+TVL Supported

3Languages

1stPlace · Hackmos 2022

// background

Self-taught. Trilingual. Ships fast.

I taught myself Rust, CosmWasm, Solidity, technical writing, and content strategy from scratch. Won first place at Hackmos Medellin 2022building an ETF auto-rebalancer on-chain, then became the sole technical writer for CosmWasm's developer documentation.

Every protocol I've worked with had the same problem: brilliant tech, terrible communication. I fix the communication.

Now I operate across three verticals. Web3 ghostwriting for protocols that need whitepapers, docs, and GTM strategy that actually converts. Website design for businesses running on word-of-mouth with zero online presence. And AI automation for founders drowning in manual work that should have been automated months ago.

Hackathon1st Place, Medellin — Rust/CosmWasm

DocsSole writer, CosmWasm developer docs

LanguagesEnglish, French, Greek

AICRM profilers, content pipelines, prompt systems

// services

Three verticals. One thesis.

Web3 Content & GTM

Your protocol is technically sound. Your docs read like a research paper nobody asked for. Your Twitter sounds like every other DeFi project. I fix all three.

→Whitepapers & Litepapers
→Developer documentation
→Launch content & GTM playbooks
→Social media strategy & threads
→Grant proposals
→Investor communications

For → DeFi protocols · L1/L2 chains · Crypto startups

Websites for Business

You have strong reviews and zero website. 85% of your potential customers Google you before they call. I build the page that converts them — starting with a free homepage.

→Free homepage — no strings
→Additional pages ($150–300/ea)
→Monthly hosting & maintenance
→Google Business optimization
→Mobile-responsive design
→Bilingual sites (EN/FR)

For → Trades · Restaurants · Salons · Retail · Professional Services

AI Automation

You're spending 10 hours a week on tasks a well-designed prompt chain could handle in 10 minutes. I build the system, train you on it, and you get your time back.

→Custom prompt engineering
→CRM & lead-scoring systems
→Content generation pipelines
→AI-assisted research workflows
→Claude / GPT integration
→Workflow audits & optimization

For → Founders · Teams · Solopreneurs · Agencies

// shipped

The receipts.

Content Strategy

Seamless Protocol

Led social and content strategy for an Ethereum DeFi lending platform. $175M+ TVL. Built educational frameworks for 5 Leverage Token products during mainnet expansion.

EthereumBaseGTM$175M TVL

Ghostwriting

Quasar Finance

Ghostwrote the Litepaper and Whitepaper. Translated complex DeFi vault strategies and financial mechanisms into investor-ready narratives.

CosmosWhitepaperGhostwriting

Developer Docs

CosmWasm

Sole technical writer. Managed all GitHub-hosted documentation — navigation, code examples, and developer onboarding flows for the entire ecosystem.

RustCosmWasmGitHub

AI + CRM

DexPal CRM Profiler V2

Architected an LLM-powered lead-scoring system that classifies crypto user personas — Active DEX Traders, Airdrop Farmers, KOLs — across five analytical categories.

AI/LLMCRMPrompt Eng

Hackathon — 1st Place

Equilibrium

ETF Auto-Rebalancer protocol in CosmWasm/Rust. Automated portfolio management and rebalancing logic on-chain. First place, Hackmos Medellin 2022.

RustCosmos1st Place

Hackathon — 3rd Place

Swift Protocol

Privacy-focused blockchain communication layer. Encrypted AADAO newsletters on-chain via passkey encryption for $ATOM holders.

PrivacyCosmos3rd Place

// let's talk

Got something worth building?

Protocol, storefront, or workflow — if it needs to be explained, sold, or automated, I'm your guy.

costag2400@gmail.com 514.224.1261 @costa__io