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Founding Engineer Apis

💼 Full-time🗓 2026-07-24

Core

Building the core developer platform and backend services that enable autonomous payments for AI agents.

Role type

Founding Engineer (Backend Infrastructure)

Builds

Core developer platform and essential backend services for AI agent transactions

Domain

Fintech / Generative AI / Digital Payments

Deliverable

production ML models | product features | infrastructure

Required skills

NodeJS or Python, modern cloud architecture, relational databases, NoSQL databases

Preferred skills

Fintech experience, payments domain knowledge, open-source contributions

Technologies

NodeJS, Python, cloud infrastructure

Responsibilities

Design and scale backend services, define technical roadmap, write production-ready code, implement security and reliability standards, own features from design to deployment

Seniority

Founding team, hands-on IC

Rewrite
## About the Role As a key member of our founding team, you will be one of our most pivotal engineering hires. This role is about building our core developer platform and owning its success. You will collaborate closely with the founders and the founding engineer to architect the platform, make foundational technical decisions, and write the code that will empower a new generation of agent-driven commerce. ## Responsibilities - Build the Core: Design, build, and scale the essential backend services that power our platform's capabilities for AI agents. - Collaborate on Architecture: Work with the team to define our technical roadmap and make foundational decisions about our systems and infrastructure. - Ship Production-Ready Code: Write clean, maintainable, and well-tested code that will serve as the bedrock of our platform for years to come. - Ensure Security & Reliability: Implement and uphold the rigorous security and reliability standards required for a financial technology platform. - Own Your Work: Take complete ownership of features and systems, from the initial design phase through deployment, monitoring, and iteration. ## Requirements - A Proven Builder that moves fast: You have a strong track record of building, shipping, and maintaining complex backend systems and you operate with a profound sense of purpose and speed. - Technical Proficiency: You are highly proficient in NodeJS or Python and have a solid understanding of modern cloud architecture. And you have practical experience with both relational and NoSQL databases and understand their distinct advantages. - A Passion for Craft: You care deeply about your work. This may be demonstrated through ambitious personal projects, open-source contributions, or the quality of your past professional work. - A Collaborative Mindset: You are an excellent communicator who thrives in a small team environment, able to give and receive feedback constructively. We value direct, unfiltered feedback. The best ideas emerge when they withstand rigorous, ego-free debate. ## Nice to Have - Fintech Experience: Previous experience in fintech, payments, or other regulated financial services is a significant advantage. ## What We Offer - Competitive compensation, meaningful equity stake, comprehensive Benefits: Including health, dental, and vision insurance. ## About the Mission AI agents are poised to transform the world of commerce, yet they face one critical barrier: the inability to transact autonomously. This limitation is holding back the potential of an entirely automated economy. PayOS is building the financial backbone for this new, agent-driven paradigm. Our mission is to develop groundbreaking infrastructure that makes autonomous payments as seamless and secure as traditional e-commerce. PayOS sits at the explosive intersection of two global mega-trends: Generative AI and Digital Payments. With the generative AI market forecasted to reach $1.3 trillion by 2032, our vision is clear: become the definitive infrastructure provider for this emergent economy and set the global standard for AI-native transactions from day one. ## How to Apply If this mission and role excite you, we'd love to see your work. Please send your GitHub profile or personal portfolio to [email protected]. A short note on a challenging technical problem you've solved or a project you are particularly proud of is highly encouraged.
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