Full Stack Engineer – Billing, Payments & AI

About the role

We are partnering with a fast‑growing, venture‑backed fintech company that is scaling its B2B payments platform. As a Full‑Stack Engineer you will own end‑to‑end product development across billing, payments, collections, integrations, and AI‑powered workflows, shaping core systems that directly generate revenue.

Key responsibilities

• Design, build, and ship full‑stack features from concept to production.
• Own database schema, API design, backend logic, and frontend user experiences.
• Develop and maintain billing engines, payment integrations, collections automation, and financial reporting tools.
• Integrate third‑party services and AI/LLM capabilities into the product.
• Collaborate with product, design, and customers to iterate based on real‑world feedback.

Required profile

• Strong ownership mindset with a desire to build production‑grade systems.
• Comfort working in a fast‑moving startup environment and making technical trade‑offs.
• Ability to understand business impact and communicate with customers when needed.

Required skills

• Proficiency in TypeScript across the full stack.
• Experience integrating AI/LLM tools to enhance product functionality.
• Hands‑on experience with API development and database design.

What we offer

• Opportunity to impact a high‑growth fintech startup with serious market traction.
• Ownership of critical product components that handle real money.
• Collaborative environment with experienced founders and a strong runway.