Senior Software Engineer – Fintech​/DeFi

Senior Software Engineer – Fintech / De Fi

Senior Software Engineer – Fintech / De Fi

Location: East Coast, USA (Preferred: NYC, CT, MA, NJ) or France

Type: Full-Time

This position is for US Citizen / Permanent Resident or French Citizen

Your role

We’re hiring a Senior Software Engineer to build the infrastructure powering the future of onchain equity.

You’ll work at the intersection of fintech, AI-assisted development, and regulated De Fi — helping us scale the systems that make equity move like code.

You’ll use the latest AI-assisted dev tools (Cursor, MCP, AI agents) to build production-grade systems faster and smarter — shipping secure, compliant, and scalable software that bridges traditional and blockchain finance.

This is a high-impact role for an engineer who wants to move fast, code with intelligence, and ship at scale.

What you'll own

Build and ship scalable, production-ready features using React, Type Script, Node.js, and PostgreSQL

Leverage AI tools (Cursor, MCP, AI agents) to accelerate development and power smarter product features

Design and optimize AWS cloud infrastructure (Lambda, Amplify, S3, API Gateway; Bedrock knowledge is a plus)

Collaborate with product, legal, and finance teams to bridge onchain and traditional systems

Ensure security and regulatory compliance across all deployed systems

Contribute to architecture decisions and mentor teammates on AI-assisted development best practices

What we're looking for

5+ years of professional software development experience

Advanced skills in React, Type Script, Node.js, and PostgreSQL

Solid experience with AWS Lambda + Amplify

Proven record of delivering production systems in fintech or regulated environments

Familiarity with Solidity, DAML, or Bedrock is a plus (not required)

Curiosity and comfort using AI-assisted tools daily to boost productivity and quality

Must be based on the US East Coast (NYC/CT/MA/NJ preferred) or France
, with regular team meetups in NYC/CT

Impact: Build the regulated DeFi infrastructure that redefines private markets.

Innovation: Use AI-assisted development to push fintech engineering forward.

Growth: Work directly with founders on high-stakes, global infrastructure.

Package: Competitive salary, equity, and health benefits.

Culture: No bureaucracy, full transparency, and a team that thrives on execution.

How to Apply

Send us your resume, Git Hub, and a quick note.

If you’re excited about building at the intersection of AI + fintech + regulated De Fi , we want to hear from you.

Fairmint is an equal opportunity employer.