Hey, I'm Marcelo.
Solana engineer. SVM, ZK, and squeezing every compute unit out of the runtime.
I'm a Solana blockchain engineer focused on SVM development and on-chain performance — currently founding Cloak, building privacy infrastructure on Solana with Groth16, Poseidon, and a custom Merkle tree on Pinocchio.
Experience across: Founding Engineer at ComputeLabs (GPU-tokenization on Solana), Global Fellow at the Solana Foundation Summer Fellowship (1 of 30 worldwide), and Turbin3 Builders + Advanced Programs alum. Software Engineering at Inteli; co-founded Inteli Blockchain, a student blockchain club in São Paulo.
Lately: zero-knowledge proofs on Solana, sBPF assembly, async Rust, and protocol-level performance work.
Selected work
Cloak
🏆 Cypherpunk Hackathon · Colosseum C4↗Privacy infrastructure on Solana — ZK-shielded transfers, swaps, and payments. Custom Poseidon Merkle tree, forked groth16-solana, classical PDAs over compressed accounts. Founder & CTO.
RustPinocchioCircom 2Groth16TypeScript SDKsbpf-cheatsheet
26★ on GitHub↗Reference repository for sBPF (Solana Berkeley Packet Filter) assembly — registers, syscalls, calling conventions. Used by other devs writing bare-metal Solana programs.
AssemblySolanasBPFComputeLabs
Nov 2024 — Oct 2025↗Founding engineer. Architected a GPU-tokenization platform turning physical GPU compute into tradable SPL tokens on Solana. Built the Python validator, Rust on-chain programs, and TS services.
RustPython / FastAPITypeScriptSolanaAWSDeVolt
🏆 Global University Prize↗Decentralized EV-charging network. Captained a 5-person team to 1st place out of 1,071 projects (8,300+ participants, 95 countries) at the Solana Renaissance Hackathon 2024.
RustAnchorGoNext.jsadvanced-programs
7★ on GitHub↗Pinocchio-based Solana programs from Turbin3 Advanced — staking, vaults, fundraisers — written without Anchor for tight CU budgets and manual account layouts.
RustPinocchioSolana
Experience
- Founder & CTO · Cloak
Privacy infra on Solana. ZK-shielded transfers, swaps & payments.
2025 — present - Founding Engineer · ComputeLabs
GPU-tokenization platform. Rust on-chain programs, Python GPU validator, TS Solana services on AWS/K8s.
Nov 2024 — Oct 2025 - Member · Solana Superteam Brazil
Contributing to Solana ecosystem projects across Brazil.
Jun 2024 — present - Founding Member · Inteli Blockchain
Student blockchain club at Inteli (90+ members). Organized Inteli Blockchain Challenge 2023 — Brazil's first university-student-run blockchain hackathon (122 participants; sponsors: Cartesi, Ethereum Foundation, Hathor).
Mar 2022 — Dec 2025 - B.Eng. Software Engineering · Inteli — São Paulo
Project-based curriculum, partnered industry modules with BTG, Dell, IBM, Meta, Beacon.
2022 — Dec 2025
Honors
- Colosseum Accelerator — Cohort 4
Cloak selected for Colosseum's 8-week accelerator (online + SF), backing Solana-native founders.
Dec 2025 - Solana Cypherpunk Hackathon — 3rd, Stablecoin Track
Cloak placed 3rd in the Stablecoin Track and won $25K USDC for private payments on Solana.
Dec 2025 - Solana Foundation Summer Fellowship — Global Fellow
1 of 30 fellows worldwide. 8-week deep dive into advanced Solana.
May — Jul 2024 - Turbin3 Advanced Programs
Bare-metal Solana program design, peer-reviewed projects.
Dec 2024 - Solana Renaissance Hackathon — Global University Prize
1st of 1,071 projects with DeVolt.
2024
GitHub
github.com/marcelofeitoza ↗