Senior Software Engineer – Fintech / DeFi

Skills

About the Role

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.

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

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

Benefits

• Equity
• Health benefits