Available for opportunities

I build fintech and Web3 products people trust with their money.

I'm Richard Udeh, a frontend-focused software engineer shipping mobile and web products for fintech and Web3 teams.

4 mobile apps shipped to productionFintech + Web3 production interfacesLagos, Nigeria (GMT+1)

About

A little about how I work, and what I actually care about when I'm building something.

I'm a frontend-focused software engineer working across web and mobile. I care about the parts of frontend engineering that are easy to skip: state that can't get corrupted mid-transaction, layouts that hold up on a flaky mobile connection, and code a teammate can pick up without a walkthrough.

I studied Physics and Astronomy at the University of Nigeria, Nsukka — where I learned to turn ambiguous problems into precise, testable steps. That habit carried straight into how I build software.

Frontend Architecture

Component and state architecture for React and Next.js apps that stay maintainable past the first few features.

Web3 & Fintech Integrations

Wallet connections, transaction state machines, and swap/bridge flows for Assetchain's cross-chain products.

Mobile Engineering

React Native apps shipped to production across healthcare, fintech, and education.

Craft & Performance

Accessible, fast interfaces: reduced-motion support, keyboard navigation, and deliberate loading states.

Selected work

A closer look at the products I've built end-to-end — the problem, the decisions, and the trade-offs.

01Web3 Infrastructure2025

Assetchain Bridge

A cross-chain bridge interface for moving assets in and out of the Assetchain network.

Role

Frontend Engineer — sole developer on the bridge UI

Timeframe

2025

Stack

React · TypeScript · Ethers.js · Tailwind CSS

The problem

Bridging assets across chains is one of the riskiest actions a crypto user can take — a single misread transaction state can mean lost funds. The bridge needed an interface that made multi-step, multi-chain transactions legible and hard to get wrong.

Technical decisions

Modeled the bridge flow as an explicit state machine (select chain → approve → confirm → relay → finalize) so the UI could never show an ambiguous 'in-between' state.
Persisted in-flight transaction state to local storage keyed by wallet address, so a refresh or dropped connection never orphaned a pending bridge transaction.
Built wallet-connection and network-switching as isolated, reusable hooks to keep chain-specific logic out of presentational components.

Challenges & trade-offs

Reconciling inconsistent confirmation times across source and destination chains without leaving the user staring at an ambiguous loading state.
Handling wallet/network-switch edge cases (user changes network mid-transaction, rejects a signature, etc.) without corrupting the tracked transaction state.

“Treating a multi-chain transaction as an explicit, persisted state machine — rather than a sequence of component-level loading flags — made the hardest edge cases (dropped connections, network switches) tractable instead of exceptional.”

View live project

02Web3 / DeFi2025

Assetchain Swap

A token swap interface for the Assetchain ecosystem, focused on clarity under price volatility.

Role

Frontend Engineer

Timeframe

2025

Stack

React · TypeScript · Ethers.js · Tailwind CSS

The problem

Swap interfaces live or die on trust: if quoted price, slippage, and fees aren't obviously correct in the second before a user confirms, they abandon the trade — or worse, confirm a trade they didn't mean to make.

Technical decisions

Debounced and re-quoted swap rates against the router on every input change, so the confirmed price was never more than one tick stale.
Surfaced slippage tolerance and minimum-received amount directly in the primary confirmation view instead of behind a settings toggle.
Used optimistic UI for balance updates post-swap, reconciled against the next confirmed block to avoid a jarring 'snap back'.

Challenges & trade-offs

Keeping quoted rates fresh without spamming the RPC provider or introducing input lag on every keystroke.
Designing clear failure states for reverted transactions (insufficient liquidity, slippage exceeded) instead of a generic error toast.

“Showing the numbers users actually care about (slippage, minimum received) in the main flow — rather than a settings drawer — reduced the questions and hesitation around confirming a swap.”

View live project

03Fintech2025 – Present

SFX Money App

A cross-border digital wallet for sending, receiving, and holding money across African currencies.

Role

Frontend Developer — web and React Native app

Timeframe

2024 – Present

Stack

React · React Native · TypeScript · REST APIs

The problem

Cross-border transfers in and out of African currencies are typically slow and opaque. SFX needed a product that made multi-currency balances, transfers, and rates feel as immediate and trustworthy as a mainstream banking app.

Technical decisions

Built a shared design-system layer between the web marketing site and the React Native app so currency, transaction, and balance components stayed visually and behaviorally consistent across platforms.
Implemented optimistic transaction states for transfers with background polling reconciliation, so the app felt instant while staying accurate.
Prioritized skeleton loading and cached last-known balances over blocking spinners, since users frequently open the app to check balances on unreliable mobile connections.

Challenges & trade-offs

Coordinating release cycles between the Play Store and App Store while iterating quickly on a shared component layer.
Handling multi-currency formatting and rounding edge cases consistently across every screen that displayed money.

“Investing early in a shared component layer between web and React Native paid for itself within a couple of feature cycles — most bugs became one fix instead of two.”

View live project

More work

Health2026

OnlyMed

A healthcare app that brings scheduling, patient-provider communication, and secure video consultations into one place — for patients booking care and clinicians managing their day.

Play Store

Education2026

CTTWTP

Coming To Terms With The Past — an educational jigsaw puzzle game that teaches African history through immersive puzzles, narration, and interactive storytelling. Contributed as a frontend engineer on the React Native app, live on iOS and Android.

App Store Play Store