Backend Engineer

We’re equipping every developer to build successful products by giving them a suite of products to analyze, test, observe, and deploy new features. We currently offer product and web analytics, session replay, feature flags, experiments, a CDP, SQL access, a data warehouse, and LLM observability… and there’s plenty more to come.

PostHog was created as an open-source project during Y Combinator's W20 cohort. We had the most successful B2B software launch on HackerNews since 2012 with a product that was just 4 weeks old. Since then, more than 100,000 companies have installed the platform. We've had huge success with our paid upgrades, raised bags of money from some of the world's top investors, and have extremely strong product-led growth – 97% driven by word of mouth. 

We're growing quickly, but sustainably. We're also default alive, averaging 10% monthly revenue growth and with more than $20m ARR. We're staying focused on building an awesome product for end users, hiring a handful of exceptional team members, and seeing fantastic growth as a result.

What we value

• We are open source - building a huge community around a free-for-life product is key to PostHog's strategy.

• We aim to become the most transparent company, ever. In order to enable teams to make great decisions, we share as much information as we can. In our public handbook everyone can read about our roadmap, how we pay (or even let go of) people, what our strategy is, and who we have raised money from. We also have regular team-wide feedback sessions, where we share honest feedback with each other.

• Working autonomously and maximizing impact - we don’t tell anyone what to do. Everyone chooses what to work on next based on what is going to have the biggest impact on our customers.

Solve big problems -we haven't built our defining feature yet. We are all about acting fast, innovating, and iterating.

We're looking for a backend engineer to help scale our billing system. You'll be part of the Billing team, which at its core is responsible for the infrastructure that allows our products to make money. You'll focus on the complex backend systems and data pipelines that keep our billing running smoothly.

Though almost everything at PostHog is built in public, this isn't as true for billing work as it often involves sensitive IP. Nonetheless here are some example things you’ll be working on:

• Scaling our billing system backend to handle $100m+ of revenue and beyond

• Optimizing complex batch processing jobs and workflow orchestration for usage reporting and quota limiting

• Building and maintaining data transformation pipelines that turn raw invoice data into internal reports, investor reports, and GAAP compliant financials

• Driving architectural decisions for scaling our billing infrastructure

• Improving data accuracy and performance across our billing systems

• Supporting the implementation of new billing schemes for products we are launching

• You have extensive backend engineering experience

• You are very familiar with Python and SQL

• You have experience with workflow orchestration and task processing tools

• You enjoy thinking through and around edge cases galore

• You love making simplicity out of complexity (and you don't mind refactoring to clean things up)

• You enjoy working on performance optimizations and scaling challenges

• You have started a project from scratch. You might have led a project, been a founder previously, or built an impressive side project.

• You have experience in building and scaling billing systems

• You're familiar with the modern data stack

If you have a disability, please let us know if there's any way we can make the interview process better for you - we're happy to accommodate!

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