Infrastructure Engineer
Department
Engineering
Location
Remote (US | EU, UK, EMEA)
Timezone(s)
GMT +2:00 to GMT -8:00
About PostHog
We're shipping every product that companies need to run their business from their first day, to the day they IPO, and beyond. The operating system for folks who build software.
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.
Max 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, messaging, revenue analytics, and support products. When we say every product that companies need to run their business, we really mean it!
We are:
Product-led. More than 100,000 companies have installed PostHog, mostly driven by word-of-mouth. We have intensely strong product-market fit.
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.
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.
We're focused on building an awesome product for end users, hiring exceptional teammates, shipping fast, and being as weird as possible.
Things we care about
Transparency: Everyone can read about our roadmap, how we pay (or even let go of) people, our strategy, and how we work, in our public company handbook. Internally, we share revenue, notes and slides from board meetings, and fundraising plans, so everyone has the context they need to make good decisions.
Autonomy: We don’t tell anyone what to do. Everyone chooses what to work on next based on what's going to have the biggest impact on our customers, and what they find interesting and motivating to work on. Engineers lead product teams and make product decisions. Teams are flexible and easy to change when needed.
Shipping fast: Why not now? We want to build a lot of products; we can't do that shipping at a normal pace. We've built the company around small teams – autonomous, highly-efficient groups of cracked engineers who can outship much larger companies because they own their products end-to-end.
Time for building: Nothing gets shipped in a meeting. We're a natively remote company. We default to async communication – PRs > Issues > Slack. Tuesdays and Thursdays are meeting-free days, and we prioritize heads down building time over perfect coordination. This will be the most productive job you've ever had.
Ambition: We want to solve big problems. We strongly believe that aiming for the best possible upside, and sometimes missing, is better than never trying. We're optimistic about what's possible and our ability to get there.
Being weird: Weird means redesigning an already world-class website for the 5th time. It means shipping literally every product that relates to customer data. It means building an objectively unnecessary developer toy with dubious shareholder value. Doing weird stuff is a competitive advantage. And it's fun.
Who we’re looking for
The ClickHouse Operations team is responsible for the ClickHouse cluster that all other teams (and all customers) use to store and query data.
You'll help automate and maintain the infrastructure that brings up ClickHouse instances and scales out our cluster on demand.
You will also work on node and instance-level performance optimization to make sure we have the right hardware deployed for each workload we have on CH. 🚀
What you’ll be doing
Automating the provisioning of metal resources (on AWS) for our cluster.
Automating dynamic provisioning of instances, utilizing Terraform, Ansible, and K8s.
Enhancing visibility into cluster status.
Performance investigations and experiments using the latest hardware that the hyperscalers have to offer.
Requirements
Proficiency in Python, Kubernetes, and AWS.
Experience building and operating high-scale complex data storage solutions.
Strong interest and experience in ClickHouse (or similar OLAP databases) internals and query performance optimization.
Can thrive in a culture of autonomy and self-direction.
Nice to have
Experience with Terraform and Ansible for infrastructure automation.
Salary
We have a set system for compensation as part of being transparent. Salary varies based on location and level of experience.
Location
(based on market rates)Level
Step
Salary calculator
- Benchmark (United States - San Francisco, California) $243,000
- Level modifier 1
- Step modifier 0.95 - 1.04
Benefits
Generous, transparent compensation & equity
Unlimited vacation (with a minimum!)
Two meeting-free days per week
Home office
Coworking credit
Private health, dental, and vision insurance.
Training budget
Access to our Hedge House
Carbon offsetting
Pension & 401k contributions
We hire and pay locally
Company offsites
Get more details about all our benefits on the Careers page.
Your team's mission and objectives
Data at PostHog - Mission
Data Team's mission is to provide a storage and query engine that meets these requirements:
- Continue to meet the needs of the product today now and in the future
- Maintain and optimize our current ClickHouse deployment
- Elastically scale our capacity with little effort
- Support multiple query quality of service (QOS) guarantees (Real-time, Batch, etc.)
- Data is stored once and queryable from the appropriate tool
- Queries are optimized for cost and performance
- Tunable execution performance to allow trade-offs between cost and performance
- Storage is durable
Data Team's Mission at PostHog
Data Team's mission is to provide a storage and query engine that meets these requirements:
- Continue to meet the needs of the product today now and in the future
- Maintain and optimize our current ClickHouse deployment
- Elastically scale our capacity with little effort
- Support multiple query quality of service (QOS) guarantees (Real-time, Batch, etc.)
- Data is stored once and queryable from the appropriate tool
- Queries are optimized for cost and performance
- Tunable execution performance to allow trade-offs between cost and performance
- Storage is durable
In service of this mission, our goals are:
Goals for Q3 2025:
Clickhouse Tooling
Migration (P1)
Chargeback (P0) - Paweł Szczur
- Enable our customers to self service performance issues
- Surface resource consumption
- Usecase: Query analysis to avoid querying big ranges
SlopCop (query scheduling) (P0) - Ted Kaemming, Paweł Szczur
- Rate limiting
- Queuing
- Debouncing
Inserter & ShuffleHog (P0) - James Greenhill
Mutator (P0) - Daniel Escribano, Ted Kaemming
- Dagster + table + interface
- Mutation monitoring
- Ensure Deletes Run
Clickhouse Ops
- Make ClickHouse ops easy - Daniel Escribano, James Greenhill
- Complete cluster management through IaC
- EU coordinators
- Bringing up and down nodes should require no thought
- Runbook - more ideally automation
- Tooling?
- Much faster critical procedures (rely on ZK configuration more)
- ClickHouseKeeping through Dagster
- Part moving
- Detached/unneeded parts cleaning
- Resizing parts?
- Disk management
- Automatic disk provisioning based on thresholds (and limits)
- Events TTL and actual data tiering
- Some tables in Iceberg (Antalya)
- Query_log
- Query_metrics_log
- Plan for events migration to Iceberg
- ClickHouse more on K8s
Interview process
We do 2-3 short interviews, then pay you to do some real-life (or close to real-life) work.
- 1
Application (You are here)
Our talent team will review your applicationWe're looking to see how your skills and experience align with our needs.
- 2
Culture interview
30-min video callOur goal is to explore your motivations to join our team, learn why you’d be a great fit, and answer questions about us.
- 3
Technical interview
45 minutes, varies by roleYou'll meet the hiring team who will evaluate skills needed to be successful in your role. No live coding.
- 4
Founder interview
30 minutesYou have reached the final boss. It's time to chat with James or Tim.
- 5
PostHog SuperDay
Paid day of workYou’ll meet a few more members of the team and work on an independent project. It's challenging, but most people say it's fun!
- 6
Offer
Pop the champagne (after you sign)If everyone is happy, we’ll make you an offer to join us - YAY!
Apply
(Now for the fun part...)
Just fill out this painless form and we'll get back to you within a few days. Thanks in advance!
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