# React Software Engineer  at Thunes

Thunes is hiring a React Software Engineer  in São Paulo, Brazil. Level rates it Little AI ●○○○; you can [apply on Thunes](https://jobsbylevel.com/go/919ee23e-38a3-457d-a3aa-4c0c0166b679?utm_medium=ai-agent).

AI Level 1, AI centrality 25 out of 100. São Paulo, São Paulo, Brazil.

## Details

- Company: [Thunes](https://jobsbylevel.com/companies/thunes)
- AI level: AI Level 1 (score 25 out of 100)
- Location: São Paulo, São Paulo, Brazil
- Posted: April 7, 2026
- Apply: https://jobsbylevel.com/go/919ee23e-38a3-457d-a3aa-4c0c0166b679?utm_medium=ai-agent
- Free CV review for this job: https://jobsbylevel.com/cv-review?job=react-software-engineer-at-thunes-d307c4

## Description

About Thunes: Thunes is the Smart Superhighway to move money around the world. Thunes’ proprietary Direct Global Network allows Members to make payments in real-time in over 140 countries and more than 90 currencies. Thunes’ Network connects directly to over 12 billion mobile wallets, stablecoin wallets and bank accounts worldwide, as well as 15 billion cards via more than 220 different payment methods, such as GCash, M-Pesa, Airtel, MTN, Orange, JazzCash, Easypaisa, AliPay, WeChat Pay and many more. Thunes’ Direct Global Network differentiates itself through its worldwide reach, in-house SmartX Treasury System and Fortress Compliance Platform, ensuring Members of the Network receive unrivaled speed, control, visibility, protection, and cost efficiencies when making real-time payments, globally. Members of Thunes’ Direct Global Network include gig economy giants like Uber and Deliveroo, super-apps like Grab and WeChat, MTOs, fintechs, PSPs and banks. Headquartered in Singapore, Thunes has offices in 14 locations, including Barcelona, Beijing, Dubai, Hong Kong, Johannesburg, London, Manila, Nairobi, New York, Paris, Riyadh, San Francisco and Shanghai. For more information, visit: https://www.thunes.com/ Context of the role We're looking for a frontend engineer to join a small, senior team building the payment platform that powers financial operations for virtual world publishers. You'll own frontend work across multiple codebases — an internal admin tool, embeddable payment widgets, and publisher-hosted transaction pages — all securely handling real money, real compliance requirements, and real users. This isn't a "build marketing pages" gig. You'll be working with GraphQL APIs backed by Go microservices, writing code that touches invoicing, payouts, KYC verification, and fraud detection. The work matters and the stakes are real. What You'll Work On Admin Tools (React, Vite, Chakra UI, Apollo Client): Internal tooling used by operations teams to manage accounts, transactions, and payment methods. Turborepo monorepo with a GraphQL BFF layer. Payment Widgets (Next.js, React, Tailwind CSS, Server Components): Embeddable checkout, payout, and KYC flows where every millisecond of load time impacts conversion. Active rewrite with a performance-first architecture. Publisher-Hosted Pages (Next.js, Chakra UI, SSR): Multi-tenant, themeable transaction pages served under publisher-branded domains with CNAME routing and per-publisher customization. Day-to-Day Ship features and fixes across multiple TypeScript/React codebases. Write and maintain unit tests (Vitest + React Testing Library) and help with Playwright e2e tests (Python/pytest). Work with a GraphQL API layer that translates between the frontend and Go microservices (accounts, payments, invoicing, wallets). Run the full local stack via Docker Compose (makeworld) with hot-reload - no waiting for builds. Maintain or improve test coverage. Collaborate on a small team where you'll have real ownership and influence over frontend architecture. You Should Have React applications - you've shipped features that real users depend on. TypeScript proficiency . Testing discipline - experience with Vitest or Jest and React Testing Library or similar. Component library experience - you've worked with Chakra UI, MUI, or similar design systems and can extend them without fighting them. Linux shell proficiency - comfort navigating the file system, using common utilities, and basic scripting. Bonus Points Experience with payment/fintech UIs - checkout flows, KYC, compliance screens. Familiarity with Playwright or similar e2e frameworks. Docker comfort - you don't panic when the local stack is containerized. Python literacy. Enough to read and write Playwright test scripts. Go literacy. Enough to read the backend services and understand the APIs you will be calling. GraphQL experience - you've worked with Apollo Client or a similar GraphQL client and understand queries, mutations, caching, and

The description is cut here. Read the full offer: https://jobsbylevel.com/jobs/react-software-engineer-at-thunes-d307c4

Source: https://jobsbylevel.com/jobs/react-software-engineer-at-thunes-d307c4

## Cite this page

Level. https://jobsbylevel.com/jobs/react-software-engineer-at-thunes-d307c4.

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