About the Position

Founding Engineer

We are seeking a passionate and driven Founding Engineer to join our team at Infinite, a stablecoin payment processor, in San Francisco, California. As a Founding Engineer, you will define, build, and maintain the technical foundation of our platform. You will work in a fast-paced, high-ownership environment, taking full responsibility from architecture and implementation to production reliability for mission-critical services.

Responsibilities

Full Stack & End-to-End: Design, implement, and operate complete services and user-facing features, from requirements gathering through production support.
System Design & Architecture: Develop highly available, event-driven systems for ledgering, compliance, and risk that scale with transaction volume while maintaining zero downtime.
Implementation Engineering: Embed with customers, collect feedback, and iterate rapidly to ensure our roadmap aligns with user needs.
Technical Decision-Making: Balance speed and long-term scalability, selecting appropriate technologies (Next.js/TypeScript, C#, Go, Python, modern cloud infrastructure) for each problem domain.

Requirements

2–5+ years of professional software engineering, including the delivery of 0-to-1 products and scaling them in production.
Proficiency in at least two of: Next.js/TypeScript, C#, Go, Python.
Hands-on expertise with asynchronous and event-driven architectures.
Full-stack ownership spanning modern front-end frameworks, back-end services, and cloud infrastructure.
Excellent written and verbal communication; ability to influence internal and external cross-functional stakeholders.
Proven expertise with AI-assisted development tools-especially Cursor or windsurf, to accelerate code generation, refactoring, and automated test creation.

Nice to Have

Practical experience deploying lightweight machine-learning models for real-time anomaly detection, automated compliance reporting, or incident triage in production systems.
Experience designing and contributing to fintech, payments, or ledgering systems (e.g., double-entry ledgers, payments, clearing, or settlement).
Experience integrating banking, payments, or compliance providers, or a demonstrated ability to onboard unfamiliar financial APIs quickly.
Prior leadership or mentorship in a high-growth engineering team.

We Offer

Competitive salary range: $130K - $230K.
Comprehensive benefits package.
Opportunity to work in a fast-paced, high-ownership environment.

About the Company

Infinite is a stablecoin payment processor. We offer businesses turnkey APIs and SDKs to instantly move money anywhere in the world at a fraction of the cost of traditional solutions. The founding team previously built and scaled products at financial services category leaders Coinbase and Sardine.

Ideal Candidate

The ideal candidate is a passionate and driven engineer with a hacker's mindset. You are comfortable both leading a team and being hands-on with code. You thrive in fast-paced environments and are eager to tackle complex challenges that drive our company's success.

Founding Engineer

Job description