Senior Backend Engineer - Billing

Senior Backend Engineer - Billing

About Hydra Host

Hydra Host is a Founders Fund-backed NVIDIA Cloud Partner building the infrastructure platform that powers AI at scale. We connect AI Factories — high-performance GPU data centers — with the teams that depend on them : research labs training foundation models, enterprises running production inference, and developer platforms demanding scalable compute capacity.

At our core, Hydra is a financial and settlement layer for AI physical infrastructure. We process and reconcile hundreds of millions of dollars across complex contracts, usage-based consumption, and real-world operational constraints. Correctness, transparency, and trust are not nice-to-haves — they are the product.

The Role

We are hiring a Senior Billing Engineer to own and build the financial backbone of the Hydra platform.

This is not a SaaS billing role. This is not “just integrate Stripe.” We sit at the intersection of physical GPU infrastructure, multi-party contracts, and real money movement. Every GPU server, every second, every credit, every payout must be traceable, auditable, and correct.

Your mandate is to make billing a competitive advantage for Hydra : fast and accurate payouts to data center partners, absolute confidence in invoices for renters, and a system that can scale with the complexity of the AI infrastructure market.

You will design and implement systems that account for every dollar, handle failure modes gracefully, and turn messy real-world contracts into accurate & reliable financial flows.

What You’ll Do

• Act as a hands-on senior backend engineer owning production billing systems end to end
• Own the design and implementation of Hydra’s end-to-end billing engine and settlement systems, writing and operating production backend services
• Build and maintain a double-entry ledger that provides a complete, immutable paper trail for all financial activity, designed for high concurrency and strict correctness guarantees
• Implement contract-aware billing logic derived from infrastructure lifecycle events (provisioning, decommissioning, maintenance, etc.), including :

Pre-pay and post-pay contracts

Technical Environment

Required Qualifications

Preferred Qualifications

What We Value

Why Join Hydra Host

The AI infrastructure layer is being built right now. If you want to own the financial systems that make it trustworthy, transparent, and scalable — this role is for you.