Senior Software Engineer – Fintech / DeFi

You will build the infrastructure that powers onchain equity and bridge traditional finance with blockchain systems. You will design and optimize AWS cloud infrastructure, implement production-grade features with React, TypeScript, Node.js, and PostgreSQL, and use AI-assisted tools to accelerate development. You will ensure security and regulatory compliance, collaborate with product, legal, and finance stakeholders, contribute to architecture decisions, and mentor teammates on best practices.

Responsibilities

• Build and ship scalable features using React, TypeScript, Node.js, and PostgreSQL
• Leverage AI-assisted tools such as Cursor, MCP, and AI agents to accelerate development and product features
• Design and optimize AWS cloud infrastructure including Lambda, Amplify, S3, and API Gateway
• Ensure security and regulatory compliance across deployed systems
• Collaborate with product, legal, and finance teams to integrate onchain and traditional systems
• Contribute to architecture decisions and mentor teammates on AI-assisted development best practices

Requirements

• 5+ years of professional software development experience
• Advanced skills in React, TypeScript, Node.js, and PostgreSQL
• Solid experience with AWS Lambda and Amplify
• Proven record of delivering production systems in fintech or regulated environments
• Familiarity with Solidity, DAML, or Bedrock is a plus
• Comfort and curiosity using AI-assisted development tools daily
• Must be a US Citizen or Permanent Resident, or a French Citizen
• Must be based on the US East Coast (NYC/CT/MA/NJ preferred) or France

Benefits

• Equity
• Health benefits