Fullstack Software Engineer – Intelligent Financial Systems

Our company description

Mission is a platform for hiring, vetting, and managing software development talent. It enables our clients to connect with the world’s best talent to build mission-critical software products.

About the client

We are a company developing the next generation of digital financial products. Our focus is on creating scalable, secure, and highly customizable banking solutions that merge traditional fintech capabilities with cutting edge Ai

Our teams work across engineering, design, and machine intelligence to deliver platforms that make financial operations smarter, faster, and more transparent. We value craftsmanship, autonomy, and curiosity; qualities that allow us to move quickly while maintaining precision.

Operating globally with a remote first culture, we bring together specialists from finance, blockchain, and artificial intelligence to push the boundaries of what’s possible in digital money and data systems

The role

We are looking for a senior Fullstack Software Engineer to help build the foundation of our AI-driven digital banking platform. This role combines deep technical ownership with product craftsmanship. You will design and implement features that connect modern frontend interfaces with secure, scalable serverless backends, enabling real-time, data-intelligent financial interactions.

You’ll work across the full product stack, collaborating with design, data, and AI teams to deliver polished user experiences backed by robust cloud infrastructure. This is an opportunity to join a small, high-impact engineering team where your work directly shapes how people interact with intelligent financial tools

Our Tech Enviroment

We develop within a comprehensive TypeScript-based ecosystem that prioritizes performance, reliability, and developer productivity

Frontend: Built on React Native with Expo, using a shared design system and modern state/data management tools such as Zustand and TanStack Query, connected via GraphQL and REST APIs. Real-time updates are handled through WebSockets .Backend: Runs on a serverless architecture hosted on AWS, utilizing components such as Lambda, API Gateway, DynamoDB, EventBridge, and Cognito, all optimized for scalable and secure workloads

Tooling & Monitoring: Includes automated deployment, testing, and observability pipelines using platforms like Sentry, Better Stack, and Amplitude, with mobile build automation and E2E testing integrated throughout development.

What makes our setup distinct is our AI-first engineering workflow. Tools such as Cursor, Claude, and AI-connected design environments help us code, test, and iterate faster, treating AI as a genuine partner.

Responsibilities

• Develop and ship production-grade mobile and web interfaces using React Native with Expo, ensuring design precision and smooth performance.
• Take ownership of core fintech product modules such as digital wallets, payments, transaction ledgers, onboarding, and notification systems.
• Design and maintain scalable APIs and data pipelines within a serverless AWS environment (Lambda, API Gateway, DynamoDB, Kinesis, EventBridge)
• .Integrate digital asset and stable-value payment flows while maintaining high standards for compliance and data protection.
• Build real-time, event-driven user experiences using WebSockets and server-streaming connections, including conversational and AI-assisted features.
• Enhance app performance and reliability using profiling and monitoring tools like Sentry and Better Stack, along with libraries such as Hermes, Reanimated,and FlashList.
• Partner with design teams to translate Figma prototypes and design tokens into consistent UI implementations.
• Apply AI-supported development workflows (e.g., using Cursor, Claude, or related assistants) to accelerate delivery and improve testing coverage.
• Contribute to team-wide standards for AI-assisted development, evaluating new tools that enhance velocity and quality
• Provide technical guidance and mentorship to peers, promoting best practices for building secure, performant, AI-integrated f

Qualifications

• 10+ years of professional software engineering experience, including 5+ years in mobile-first or fintech applications.
• Proven experience delivering complex, secure, and high-quality financial software in production environments.
• Deep expertise with React Native + Expo and modern TypeScript development across frontend and backend layers
• .Strong background in serverless architectures and AWS cloud services
• .Understanding of secure identity management (JWT, Cognito, or comparable systems) and financial-grade data security practices.
• Familiarity with stablecoin payment mechanisms, blockchain integrations , or payment APIs.
• Practical knowledge of real-time networking technologies (WebSockets, SSE).
• Experience using AI-enhanced IDEs or developer tools in daily workflows
• .A mindset geared toward innovation and experimentation, especially around how AI changes the software development process