Software Engineer — Warehouse Pipelines

About PostHog

We're shipping every product that companies need from their first day, to the day they IPO, and beyond. The operating system for folks who build products.

We started with open-source product analytics, launched out of Y Combinator's W20 cohort. We've since shipped more than a dozen products, including:

• A built-in data warehouse, so users can query product and customer data together using custom SQL insights.

• A customer data platform, so they can send their data wherever they need with ease.

• PostHog AI, an AI-powered analyst that answers product questions, helps users find useful session recordings, and writes custom SQL queries.

Next on the roadmap are CRM, Workflow, revenue analytics, and support products. When we say every product, we really mean it!

We are:

1. Product-led. More than 100,000 companies have installed PostHog, mostly driven by word-of-mouth. We have intensely strong product-market fit.

2. Well-funded. We've raised more than $100m from some of the world's top investors. We're set up for a long, ambitious journey.

3. Default alive. Revenue is growing 10% MoM on average, and we're very efficient. We raise money to push ambition and grow faster, not to keep the lights on.

We're focused on building an awesome product for end users, hiring exceptional teammates, shipping fast, and being as weird as possible.

What you'll be doing

As a Software Engineer on the Warehouse Pipeline team in the Data Stack group, you’ll build and iterate on our data import system.
Our import workers are built in python and we pull in data from APIs and databases in batches, process the data using Apache Arrow in memory, and move the data into object storage in open table formats.
You’ll build and maintain our source library, as we’re looking for creative ways to make our library manageable at scale. You’ll revamp our schema management strategy, and build resilient systems (e.g logging, observability, testing)

You’ll debug stateful data workflows by digging into k8s pod metrics, and schedule jobs using Temporal.io. As you can see, there’s a huge breadth of challenges and opportunities to tackle, and nothing is off-limits.

The PostHog Data Stack group provides both a core product for our users and a foundational platform for our internal teams. Data is a first-class product at PostHog, not an afterthought.

You will have the chance to push the boundaries of what our Data Stack team can do while ensuring we remain stable and production-ready.

You now know what you’ll be doing, but what about what you’ll need to bring along?

You’ll fit right in if:

• You’re a builder. You bring strong skills in building resilient systems, with experience in Kubernetes, Docker, and S3 at scale. We build in python. Async-python and Temporal.io skills are welcome.
  

• You have hands-on experience with batch processing and modern data formats. We use Arrow to stream data. Experience with Iceberg and/or Delta is welcome, we don’t expect you to have experience with all three (although that would be great)
  

• You're more than a connector of things. Building pipelines is more than configuring tools to make them work together, it's about actually building the tooling used in data warehousing pipelines. We need you to have experience with building tools versus using off-the-shelf tools

• You bring experience with creating and maintaining data pipelines. You are comfortable with debugging stateful, async data workflows by digging into k8s pod metrics.
  

• You bring a mix of skills. It’s not just about the Data Pipeline work. You’ll need strong backend skills as we run a complex system.

• You love getting things done. Engineers at PostHog have an incredible amount of autonomy to decide what to work on, so you’ll need to be proactive and just git it done.
  

• You’re ready to do the best work of your career. We have incredible distribution, a big financial cushion and an amazing team. There’s probably no better place to see how far you can go.

If this sounds like you, we should talk.

We are committed to ensuring a fair and accessible interview process. If you need any accommodations or adjustments, please let us know

What’s in it for you?

Now that we've told you what you'll be building with us, let's talk about what we'll be building for you.