Arbitrum Fellowship · Sponsored by Arbitrum DAO · Powered by CoBuilders
Application: Arbitrum Ecosystem Fellowship
Team: Augusto Collerone, Joaquin Paz Marchese, Ignacio Quesada
Milestone: Structured Educational Phase
Funding Amount Unlocked: 4,000 USD
Date Submitted: [27/07/2026]
During the Structured Educational Phase, the cohort of 8 senior LATAM engineers moves from web2 experience to building on Arbitrum and Stylus. It runs as a part-time program of about 9 hours per week, organized into four weekly blocks and 18 modules: Ethereum & the EVM, Arbitrum & the Nitro Stack, Stylus Fundamentals, and Advanced Stylus & Interop. Each block has self-study, a supervised hands-on exercise, and a live Q&A. The mentors run the Q&A sessions in two working groups and answer questions between sessions in a shared Telegram channel.
The phase covers the milestone's four workstreams: a deep dive into Stylus architecture and WASM execution (Weeks 3 and 4), hands-on workshops and supervised exercises, the definition of the two tooling tracks (a Stylus Ecosystem Dashboard and a secondary open-source tooling project). The public deliverable is a technical scope document for both tools, currently being written with the cohort. After the teaching blocks, the last week of the milestone is used to define the tool scopes and architecture.
The program follows a public, interactive curriculum of four weekly blocks and 18 modules. The first two blocks cover the EVM and the Arbitrum/Nitro baseline. The last two focus on Stylus. Weeks 3 and 4 introduce Stylus as a WASM virtual machine that runs alongside the EVM (MultiVM), including its activate, execute and prove lifecycle, the Rust SDK and storage model, the ink and gas cost model, caching, and Solidity to Stylus interop. This is the part of the curriculum that gives the cohort the WASM background the tooling projects need.
Structured curriculum - public roadmap: curriculum.cobuilders.xyz
| Week | Block | Focus | Key modules | Status |
|---|---|---|---|---|
| W1 | Ethereum & the EVM | Ecosystem foundations | 1.1 Execution model · 1.2 Solidity, ABI & lifecycle · 1.3 Dev env & tooling · 1.4 Critical infra · 1.5 Why L2s exist | ✅ Delivered |
| W2 | Arbitrum & the Nitro Stack | L2 architecture deep dive | 2.1 Nitro architecture · 2.2 Fraud proofs & BoLD · 2.3 Cross-chain messaging & bridges · 2.4 Building on Arbitrum | ✅ Delivered |
| W3 | Stylus Fundamentals | Rust meets the blockchain | 3.1 Intro to Stylus · 3.2 Rust for contracts · 3.3 Stylus Rust SDK · 3.4 Local dev & first deploy · 3.5 Reading examples | ✅ Delivered |
| W4 | Advanced Stylus & Interop | Ecosystem tooling | 4.1 Gas, ink & cost · 4.2 Caching · 4.3 MultiVM interop · 4.4 Testing & security · 4.5 Tooling map · 4.6 Tooling tracks kickoff | ✅ Delivered |
Each block has its own readings, hands-on exercise and outcomes. The full module detail is on the curriculum site: https://curriculum.cobuilders.xyz/