Frojdi Dymylja
I build technology that deals with real value, at the intersection of markets and protocol engineering.
I'm drawn to work where a small mistake doesn't mean a bit of downtime, but broken accounting, a fork, slashed validators, or money going the wrong way. That's the pressure profile I'm comfortable with.
A large part of my work has been in the Cosmos stack — technology used in production by 200+ chains (Cosmos Network) and securing billions of dollars in digital assets (ICF overview).
I spend a lot of time on architecture, execution semantics, specs/ADRs, and failure modes — the boring work that makes systems defensible years later.
Background
I didn't come to this work through a traditional academic path. I needed to start working early, so I learned by building systems in production and taking responsibility for their behavior. Over time, that shaped how I think: explicit rules, clear invariants, and designs I can defend under scrutiny rather than theoretical elegance.
I started by building trading infrastructure for a private trading firm in Italy. That environment teaches you quickly that throughput is rarely the real problem — correctness, partial failures, and risk boundaries are.
- Built and scaled algos to six-figure req/s peaks, handling billions of events per day.
- Designed execution logic, quoting engines, and risk constraints where "almost correct" is unacceptable.
- The firm transitioned to crypto markets in mid-2017, which is where I first got deep exposure to blockchains and fell in love with the underlying philosophy.
- I was also active on the trading side of crypto, including being at the top of a Binance leaderboard.
This still heavily influences how I think about protocol design and DeFi today.
Protocol engineering in the Cosmos stack
In the Cosmos ecosystem, I've spent years deep in consensus, stfs, state handling, interoperability, and production-only bugs. My work ranges from hands-on implementation to architecture and specification (ADRs), and from feature design to fixing correctness issues that only appear at scale.
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Rosetta integration for Cosmos chains — Implemented Coinbase's Rosetta standard as a reusable integration surface for Cosmos-based chains.
Article ·
ADR
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ADR-036: arbitrary / off-chain signing — A spec for signing and verifying arbitrary data using Cosmos keys.
Spec
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Collections (typed state layer) — A typed state/storage layer that makes intent explicit and reduces footguns compared to raw KV access.
ADR ·
PR
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x/accounts (account abstraction) — Execution plumbing for programmable accounts, with explicit semantics around auth → execute → pay.
PR ·
Context
Fault Tolerance
I founded Fault Tolerance and built a team focused on protocol engineering and DeFi work. faulttolerance.io
Protocol & security work
DeFi & trading infrastructure
- Hands-on work on perpetual DEXes (e.g. Nibiru), trading systems, and execution/risk tooling.
- Focus areas include market mechanics, liquidation paths, funding & position accounting, and edge cases that surface under real market stress.
How I work
- Lead technical direction and execution planning.
- Break down large protocol initiatives into defensible workstreams.
- Write ADRs/specs and help teams reason about long-term execution semantics and state transitions.