Senior Full Stack Engineer / AI-Powered Fintech

As a Senior Full Stack Engineer at EER, you build a world-class whitelabel neobank with AI at its core. You own core neobank features across a modern TypeScript stack, from pixel-perfect React Native UX to scalable serverless AWS backends, while actively leveraging AI development tools to accelerate your work.

What you'll do

• Build production-ready, pixel-perfect UI in React Native and Expo using Tamagui and Style Dictionary
• Own and deliver core neobank features including wallets, payments, transaction histories, onboarding, and notifications
• Develop and maintain scalable serverless APIs with AWS Lambda, API Gateway, DynamoDB, Kinesis, and EventBridge
• Integrate stablecoin and blockchain payment flows with a focus on security and compliance
• Implement real-time features using WebSockets and SSE, including AI-driven chat and streaming UX
• Optimize for performance using Hermes, Reanimated, and FlashList, and for observability using Sentry and Better Stack
• Collaborate with design teams using Figma tokens and Tamagui workflows
• Actively leverage AI development tools such as Claude, Cursor, and MCP integrations to accelerate coding, testing, and prototyping
• Contribute to an AI-assisted engineering culture, exploring and integrating new tools to increase velocity
• Mentor teammates and help define engineering standards for AI and fintech development

What you bring

• 10+ years of engineering experience, including 5+ years in mobile fintech apps
• Proven ability to deliver secure, complex financial applications with beautiful UI
• Mastery of React Native and Expo with a strong eye for pixel-perfect UX
• Full stack proficiency in TypeScript, including serverless AWS backends
• Experience with secure authentication such as Cognito, JWT, and device secrets, and financial-grade data handling
• Familiarity with stablecoins, blockchain transactions, or payments APIs
• Strong understanding of real-time networking with WebSockets and SSE
• Comfort using AI tooling in daily development, ideally already working with Claude, Cursor, or AI-assisted IDEs
• Passion for pushing the frontier of AI-driven software development