Etinosa

Who I Am

Hey, I'm Etinosa, a frontend engineer with 5+ years building interfaces where mistakes are expensive: crypto wallets, exchanges, and AI products. As one of Razor's first engineers, I lead frontend across its DEX, now at 1.47M+ users, and a wallet 80,000+ people trust. I care most about the unglamorous part of the craft: keeping a product fast, correct, and resilient when the network fails underneath it.

What I Do

I own frontend architecture for products that can't afford to break. That means real-time state that stays consistent, money-moving flows that are race-safe and idempotent, and failure handled as a first-class case rather than an afterthought, all without losing the polish that separates a good UI from a great one. I have an obsessive eye for the details most people never register: every stroke, indent, and half-degree tilt, because those are exactly what make an interface feel considered. Frontend-first, but comfortable across the stack: REST and GraphQL, WebSockets, monorepos, observability, and LLM integration when a project needs it.

How I Work

I chase the root cause, not the symptom: when a cursor shows a pointer where there's no link, I don't hide the icon, I hunt down the invisible overlay that made it one. Nothing ships until I've watched it behave: resized to 320px, poked at the awkward in-between widths, broken on purpose. I build for scale before it shows up: the data model, the folder structure, the state boundaries all assume the product is going to get much bigger, so growth becomes a non-event instead of a rewrite. I hold motion and performance to the same bar: when a page was mounting fifteen thousand animated cells and stuttering the nav on mobile, I didn't just dial a number down, I rebuilt it around what the device actually needed. Done right, motion and speed aren't a trade-off, they reinforce each other. And I build for the moment things go wrong: the network drops, the model hallucinates, a provider falls over. In the products I work on, that's not the edge case, it's the job.

Underneath all of it I'm endlessly curious. I pick up a new tool by rebuilding something real with it, and I'd always rather understand why something works than memorize that it does. That's the part of the job I'd do for free.

My Journey

I started building for the web in 2018 and narrowed from generalist into frontend engineering at scale. Today I lead frontend across Razor's Move-ecosystem products: a DEX that's first on Movement (1.47M+ users, 50M+ transactions), self-custody wallets, and an open-source wallet kit. I also take on AI contract work and build fintech and AI systems to a production standard, documenting the decisions as I go. Along the way I've mentored dozens of developers.

Vision

LLMs are reshaping how interfaces are built and how people interact with software. I want to stay at the edge of that shift, building the tools and the UX that make AI genuinely reliable and useful in everyday work, not just impressive in a demo.

Beyond Code

Big on music, it runs under everything I do, with football never far off. I care about fashion, read widely, and travel when I can; the stuff away from the screen sharpens the taste that goes back into the work.