Full-Stack Developer, Payments Platform, AI approach
First seen by Alion on Oct 21, 2026.
We’re looking for an AI-forward Full-Stack Developer to help build a platform focused on international payments, crypto infrastructure, and blockchain integrations.
The platform connects third-party services, payment infrastructure providers such as Bridge, and blockchain-based systems. The product involves API integrations, stablecoin-related functionality, on-chain interactions, and reliable data processing.
We’re looking for someone passionate about developer platforms, experienced in integrating external APIs into real-world products, and enthusiastic about using Claude and other AI-powered tools to build software faster and more effectively.
Responsibilities
Build and maintain full-stack applications using Node.js, TypeScript, React, and Next.js.
Develop backend services and REST APIs using Express.js.
Integrate third-party APIs for international payments, financial services, and crypto infrastructure.
Work with providers such as Bridge and similar payment and stablecoin infrastructure services.
Implement blockchain integrations, on-chain interactions, and crypto-related workflows.
Design and maintain MongoDB schemas and data models.
Build responsive frontend interfaces and connect them to backend services.
Implement webhooks, asynchronous workflows, transaction status tracking, and error handling.
Deploy, maintain, and monitor applications on AWS.
Use Claude and other AI-powered development tools throughout the development lifecycle.
Contribute to architecture decisions, code quality, and developer experience.
Requirements
Strong experience with Node.js and TypeScript.
Hands-on experience with React and Next.js.
Experience building backend services and APIs with Express.js.
Practical experience with MongoDB and database-driven applications.
Experience integrating third-party APIs into production products.
Familiarity with AWS and cloud-based application deployment.
Understanding of REST APIs, webhooks, authentication, and asynchronous processing.
Knowledge of crypto, blockchain fundamentals, and on-chain transactions.
Experience using Claude or similar AI coding tools as part of everyday development.
Ability to work independently, solve technical challenges, and deliver features end to end.
Nice to Have
Experience with fintech, international payments, or cross-border payment systems.
Previous integrations with Bridge or similar payment and crypto infrastructure providers.
Experience with stablecoins, crypto wallets, blockchain APIs, or smart contracts.
Familiarity with Ethereum and EVM-compatible networks.
Experience with AWS services, background jobs, queues, and distributed systems.
Experience building developer platforms, public APIs, or SDKs.
Who We’re Looking For
We’re looking for an AI-first engineer who actively uses Claude to research, implement, debug, and improve code while maintaining a strong understanding of the systems being built.
You’re passionate about developer platforms and enjoy making complex integrations simple and reliable. You can move comfortably between frontend and backend development, connect external services, and build practical solutions involving payment systems and blockchain infrastructure.
You value speed, ownership, and maintainable code over unnecessary complexity.
What We Offer
The opportunity to build a product at the intersection of international payments, crypto, and blockchain.
An AI-first development workflow using modern tools such as Claude.
A lean team, direct communication, and ownership of technical decisions.
The opportunity to work on real-world financial infrastructure and API integrations.
If you enjoy full-stack development, API-driven products, crypto infrastructure, and AI-assisted engineering, we’d love to hear from you.