Billing Engineer

E2B; United States; Hybrid; USD 150,000 - 190,000; Full time

Benefits offered by this job

Healthcare

Vision insurance

Dental insurance

Unlimited PTO

401k

Job summary

E2B is seeking a Senior Backend Engineer to own billing end-to-end—from metering, usage, and invoicing to collections and the Stripe integration. You will redesign the system with input from engineering, finance, and customers, ensuring scalable data models and reliable APIs.

You’ll collaborate across Core, Platform, and Dashboard teams to define data contracts, improve observability, and enable audit-ready revenue reporting. Hybrid work with SF and Prague offices.

Qualifications

• 5+ years in billing systems or equivalent
• Strong Go programming experience
• Solid API design with REST/RPC
• Deep PostgreSQL knowledge and data modeling
• Experience with authentication/authorization
• Billing automation and invoicing experience
• Familiar with Stripe billing workflows and payments
• Clear cross-functional communication with finance

Responsibilities

• Own billing services end-to-end: metering, charges, invoicing, payments, data models
• Own Stripe integration: subscriptions, Billing Meters, invoicing edge cases
• Build billing automation: failed payments, collections, proration, credits, refunds
• Collaborate with Core, Platform, and Dashboard to define data contracts
• Partner with Finance on reconciliation, revenue reporting, audit-readiness
• Make architectural decisions around observability, testing, and security

Skills

Go

Billing

REST APIs

Realtime data

Auth security

Payments

Stripe

Invoicing

SKUs

Data modeling

Tools

PostgreSQL

Stripe

Job description

About E2B

E2B is a fast-growing Series A startup with over $37M in funding and 8-figure revenue. We are building the Agent Cloud and power the infrastructure behind AI labs and some of the most widely used consumer and enterprise agents, including Manus, Genspark, Lindy, Groq, and Artificial Analysis. Our team includes original authors of Firecracker, the AWS microVM technology powering Lambda, along with alumni of Cognition, JetBrains, Zapier, and Wish.

About the role

Your job is to own billing at E2B — everything that touches how we charge customers, collect revenue, and capture the data behind it. The metering pipeline, the Stripe integration, invoicing, collections, and the billing surfaces developers see in the dashboard.

Your code will be responsible for collecting data metrics, creating and sending invoices and reconciliation of payments for our customers across the globe.

We have a billing system. Your job is to take it over end to end and redesign it. Engineering, finance, and customers all depend on the system and the data it produces, and you'll work across all three. When a customer asks why their invoice looks the way it does, you're the person who can answer. Responsibilities include:

• Owning the services behind billing end-to-end — usage metering, charge calculation, invoicing, payments, and the data models underneath them

• Owning the Stripe integration end-to-end: subscriptions, Billing Meters, and enterprise invoicing edge cases

• Building billing automation: failed-payment recovery, collections, proration and plan changes, credits, refunds, and disputes

• Working with engineers across Core, Platform, and Dashboard to get the data billing depends on, and defining the contracts for it

• Partnering with finance on reconciliation, revenue reporting, and audit-readiness

• Making architectural decisions around observability, testing, and security

What we're looking for

• Understanding of metric collection, metered usage, Pay-as-you-go, billing cycles - being able to understand finance requirements and translate them into well tested code

• Backend engineer with 5+ years billing systems experience, with deep expertise in Go

• Strong API design — REST/RPC, contracts and versioning

• Solid with PostgreSQL: schema design, query optimization, migrations, and reasoning about data at scale

• Backend fundamentals: authentication/authorization, server-side performance, and building real-time data flows (WebSockets, SSE)

• Experienced with charging logic, collections, billing automation, and billing-related data flows

• Comfortable with complex invoicing, SKUs, usage-/contract-based billing, and third-party payment platforms

• Strong cross-functional communication skills, especially with finance

• Comfortable owning a system end-to-end with high autonomy

• Able to work through ambiguity and figure things out independently

What it’s like to work at E2B

We’re a fast-growing startup with in-person (4 days on-site, 1 day WFH) offices in San Francisco and Prague, Czech Republic. We already generate 8-figure revenue and work directly with top-tier AI companies like Manus, Genspark, Lindy, Groq, Artificial Analysis and other exciting teams pushing the frontier of AI.

We offer healthcare, vision, and dental insurance, unlimited PTO, 401k, and a variety of perks for in-office employees.