Senior Software Engineer
Summary
Senior Software Engineer at Fairmint builds and ships scalable product features with React, TypeScript, Node.js, and PostgreSQL, designs AWS infrastructure (Lambda, Amplify, S3, API Gateway), and integrates onchain with traditional financial systems under security and regulatory compliance. The role also mentors teammates on AI-assisted development using Cursor, MCP, and AI agents.
You will build and ship scalable product features with React, TypeScript, Node.js, and PostgreSQL. You will use AI-assisted development tools, design and optimize AWS infrastructure, integrate onchain and traditional financial systems, maintain security and regulatory compliance, contribute to architecture decisions, and mentor others in AI-assisted engineering practices.
Responsibilities
- Build and ship scalable features with React, TypeScript, Node.js, and PostgreSQL
- Use Cursor, MCP, and AI agents to accelerate development and enhance product features
- Design and optimize AWS cloud infrastructure using Lambda, Amplify, S3, and API Gateway
- Integrate onchain systems with traditional financial systems
- Ensure security and regulatory compliance across deployed systems
- Contribute to software architecture decisions
- Mentor colleagues on AI-assisted development practices
Requirements
- Have at least 5 years of professional software development experience
- Demonstrate advanced skills in React, TypeScript, Node.js, and PostgreSQL
- Have solid experience with AWS Lambda and Amplify
- Show a record of delivering production systems in fintech or regulated environments
- Be comfortable using AI-assisted development tools daily
- Be a US citizen, permanent resident, or French citizen
- Be based on the US East Coast or in France and attend regular team meetups in NYC or Connecticut