Fynix Capital is a blockchain technology company. We design, build, and ship production-grade protocols, smart contracts, and on-chain applications for teams that take Web3 seriously.
We work across the full blockchain stack — from low-level protocol design to user-facing Web3 applications. Pick the surface area that matters to your business.
Production-ready Solidity, Rust, and Move contracts — gas-optimized, formally tested, and built to be audited.
End-to-end protocol design — tokenomics, mechanism design, on-chain governance, and the systems thinking to make them durable.
Wallet-aware applications with first-class UX. We treat Web3 frontends as products, not as glorified RPC clients.
Validator operations, RPC infrastructure, indexers, and the off-chain plumbing that on-chain systems quietly depend on.
Pre-audit reviews, threat modeling, and post-deployment monitoring. We harden contracts before adversaries find them first.
Interoperability solutions across EVM and non-EVM ecosystems — built with the paranoia that bridges deserve.
We're chain-agnostic by principle and opinionated by experience. We pick the network that fits the problem, not the hype cycle.
Every contract starts as a written spec — invariants, edge cases, and adversarial scenarios — before a single line of code is written.
Unit, integration, fuzz, and invariant tests run on every commit. We treat untested code as broken code.
Code is structured, documented, and reviewed internally so external auditors can move fast and find the things that matter.
Deployment is a milestone, not the finish line. We monitor, patch, and respond to what real users do with what we build.
We work with a small number of teams at a time. Send us the brief and we'll respond within 48 hours.