Senior Full Stack Engineer Engineering Lisbon, Remote →

rho.trading; Lisboa; Remote; EUR 60,000 - 90,000; Full time

Job summary

rho.trading is seeking a Senior Full Stack Engineer with strong frontend depth to own the user-facing layer across our fintech products. This frontend-leaning role focuses on turning complex workflows into elegant, high-performance web experiences and includes real-time data and Web3 integrations.

You will build client-facing apps, collaborate on backend services where needed, and contribute to internal tools and product infrastructure in a startup environment.

Qualifications

• Frontend proficiency with React and TypeScript in production.
• Ability to own the frontend across multiple products.
• Experience applying AI to design, solve problems, and iterate.
• Background in DeFi/crypto trading or fintech products.

Responsibilities

• Own the frontend experience across multiple products from UX to implementation.
• Build and maintain client-facing web apps for trading and DeFi products.
• Turn ambiguous inputs into production-ready solutions.
• Work with real-time market data, charts, wallets, and smart contracts.
• Contribute to backend services, APIs, and internal tooling when needed.
• Help shape frontend architecture, components, testing, and quality.

Skills

Frontend Expertise

Full Stack Capability

AI-Native Workflow

Domain Experience (DeFi/crypto)

Real-Time & Web3 Experience

Product Sense

Autonomy

Tools

React

TypeScript

Vite

Tailwind CSS

shadcn/ui

Zustand

TanStack Query

WebSockets

TradingView

Wagmi

Viem

Ethers.js

OpenAPI/Orval

Vitest

MSW

Docker

GitHub Actions

Job description

Rho builds fintech products in crypto across trading, exchange, and DeFi workflows. We are looking for a Senior Full Stack Engineer with strong frontend depth to own the user-facing layer across our products.

This is a frontend-leaning full stack role for someone who enjoys working on sophisticated financial products and turning complex workflows into elegant, high-performance web experiences. You will build and maintain client-facing applications, work with real-time data and Web3 integrations, and contribute to backend services, internal tools, and product infrastructure where needed.

We expect you to use AI fluently as part of your engineering workflow: to research problems, shape solutions, accelerate delivery, and improve execution quality. You should be comfortable taking an idea from an initial conversation to a production-ready result

What you’ll do

• Product Ownership: Own the frontend experience across multiple products, from UX decisions to implementation quality.
• Application Development: Build and maintain client-facing web applications across trading and DeFi products.
• Solution Design: Turn ambiguous inputs into clear, production-ready solutions.
• Real-Time & Web3 Workflows: Work with real-time market data, charting, wallet flows, and smart contract integrations.
• Full Stack Contribution: Contribute to backend services, APIs, internal tools, analytics surfaces, and integrations where needed.
• Frontend Foundations: Help shape frontend architecture, reusable components, testing practices, and overall product quality.
• Execution: Balance speed, polish, and maintainability in a startup environment.

What we’re looking for

• Frontend Expertise: Strong experience with React and TypeScript in production.
• Full Stack Capability: Senior-level frontend expertise, with the ability to work across the stack when needed.
• AI-Native Workflow: Fluent, effective use of AI for solution design, problem solving, implementation, and iteration.
• Domain Experience: Prior experience in DeFi, crypto, trading, exchanges, or adjacent fintech products.
• Real-Time & Web3 Experience: Experience building real-time interfaces and working with Web3 integrations.
• Product Sense: Ability to translate complex workflows into intuitive user experiences.
• Autonomy: Comfortable operating independently and moving quickly with low-clarity inputs.
• Relevant stack: React 18, TypeScript, Vite, Tailwind CSS, shadcn/ui, Zustand, TanStack Query, WebSockets, TradingView, Wagmi, Viem, Ethers.js, OpenAPI/Orval, Vitest, MSW, Docker, GitHub Actions.