Work at a Portfolio Company

Mobile Engineer



Software Engineering
Posted on Thursday, April 13, 2023

About PostHog

PostHog is the open source Product OS - it's a suite of product and data tools, built on the modern data stack. We provide product analytics, session recording, feature flags, A/B testing, event pipelines and a data warehouse. PostHog can be deployed to the cloud, or self-hosted on existing infrastructure, removing the need to send user data to a 3rd party.

PostHog was created as an open source project during Y Combinator's W20 cohort and had the most successful B2B software launch on HackerNews since 2012 - with a product that was just 4 weeks old. Since then, more than 10,000 companies have installed the platform, we've had huge success with our paid upgrades, and we have raised $27m from some of the world's top investors, and have shown strong product-led growth - 97% driven by word of mouth.

Despite the 📉 tech market, we're default alive and doing better than ever!

We've been averaging >20% monthly revenue growth and we didn't raise a huge / now-overpriced round in 2021. While others are focused on layoffs and struggling to grow into huge valuations, we're focusing on an awesome product for end users, hiring (a handful of) exceptional team members, and seeing fantastic increases in revenue as a result.

As a Mobile Engineer, you will be an integral part of the Monitoring team and have the opportunity to not only work on one app but rather tooling that impacts 1000s of others. You will build multiple demo apps with different frameworks (maybe even an open-source PostHog app) in order to feed into our own SDKs and have a chance to get deep into technical challenges that go way past building simple lists.

What you’ll be doing

  • Building our SDKs in the open to support product analytics, session recording, feature flags, crash, and error reporting, and much more

  • Work on PostHog with full-stack engineers to build a Product OS that is as strong for Mobile engineers as it is for Web engineers

  • Take some of our more creative ideas and see which fit in the Mobile space in a way that can empower engineers to do more via PostHog (e.g. Apps like Feedback, Toolbar, etc.)

About our engineering teams

  • Engineers work across one of our small teams. Our main product-focused engineering teams are Product Analytics Monitoring, and Experimentation. We usually hire for all three teams, and then decide where individual people will work the best. We also give people the opportunity to move across teams, to make sure they get to work on different problems and learn new skills.

  • We work on a two week sprint basis and we give everyone in the team the opportunity to suggest what they want to build, in order to have the biggest impact on our customers. Engineers are given real ownership of what they want to focus on, and they are responsible for tests, user feedback, and tracking.

  • You will be working directly with our customers - we have a weekly support hero, who is in charge of all customer questions and inquiries that week. We also have a thriving user Slack group and we receive PRs from users every week.

  • The technical challenge is designing a highly scalable product right out of the box when deployed on premise, supporting a wide breadth of features that give users superpowers, and enabling an ecosystem of contributors and apps from anyone in the world.

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.


  • Mobile experience in native iOS and/or Android

  • An interest in working with both iOS and Android

  • A willingness to work on tooling that will be installed in 1000s of Apps rather than working on 1 app.

Nice to have

  • An interest in cross-platform frameworks like React Native / Flutter

  • Experience building SDKs (Cocoapods, Maven packages) and distributing them

  • General web development experience and an interest in getting involved with non-mobile topics

If this sounds like what you’d love to be doing, we can’t wait to hear from you. If you’re not sure that you exactly fit the above criteria, get in touch anyway. Alignment with our values is just as important as experience! 🙏


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)

The benchmark for each role we are hiring for is based on the market rate in San Francisco.


We pay more experienced team members a greater amount since it is reasonable to expect this correlates with an increase in skill


We hire into the Established step by default and believe there's a place to have incremental steps to allow for more flexibility.

Base salary

$224,200 - $245,440 plus equity


  • 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

Your team's mission and objectives

Makers everywhere make the right decisions by understanding their users' behavior.Session Replay is just the beginning...

Goal 1 - Finish the 80:20 of Session Replay

Why? - The core product of this team, we want to ensure that it works well and is available to our customers. We have a lot of other things we want to do but we need to make sure we have a solid foundation to build on. At a minimum this covers our new ingestion and storage system, the V2 of our recording JS and the ability to record on mobile.

Goal 2 - Notebooks MVP

Why? - We proved to ourselves that our Notebooks concept is a strong way to tie multiple areas of PostHog together. Getting this foundational feature up and running will allow us and the community to build it further and extend PostHog.

Goal 3 - Errors MVP

Why? - We know that one of the strongest use cases for Replay is to understand what the user experience and journey was leading up to an exception. With the platform of PostHog we are well placed to build out a strong error tracking and analysis product, tightly integrated with the rest of PostHog.

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 application to see how your skills and experience align with our needs.

  • 2
    Culture interview30-min video call

    Our 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 interview45 minutes, varies by role

    You'll meet the hiring team who will evaluate skills needed to be successful in your role. No live coding.

  • 4
    PostHog SuperDayPaid day of work

    You’ll join a standup, meet the team, and work on a task related to your role, offering a realistic view of what it’s like working at PostHog.

  • 5
    OfferPop the champagne (after you sign)

    If everyone’s happy, we’ll make you an offer to join us - YAY!


(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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