Interview preparation

PostHog interview process & preparation

PostHog currently has 6+ live openings on OnJob.io, concentrated in Software Engineer, Accountant and Data Analyst roles. There are no leaked or company-specific questions here — instead, prepare with the general, role-based interview rounds and most-asked questions for those role types below, then practise them free with OnJob's AI mock interview.

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Honest note: OnJob.io does not publish leaked or company-confidential interview questions. The guides below are general, role-based preparation — the standard rounds and commonly-asked questions for the role types PostHog is currently hiring for. Use them to prepare; your real PostHog interview may differ.

What to expect when interviewing for Software Engineer, Accountant and Data Analyst roles at companies like PostHog

PostHog is currently advertising these role types on OnJob.io. Each guide is the general interview structure and most-asked questions for that role — prepare with it, then rehearse free with the AI mock interview.

General Software Engineer interview prep

2 live roles at PostHog

Coding, data structures, algorithms and system design — the core software engineering loop used by product companies and startups across India.

Typical Software Engineer interview rounds

1 Online assessment. Timed coding problems on arrays, strings and hashing on HackerRank or HackerEarth.
2 DSA / problem solving. 1–2 live coding rounds on data structures, algorithms and complexity analysis.
3 System design. Designing a scalable service (mid/senior); low-level design for early-career.
4 Hiring manager / culture fit. Past projects, ownership, behavioural questions and team fit.

Commonly-asked Software Engineer questions

Reverse a linked list, both iteratively and recursively.
Find the two numbers in an array that add up to a target sum.
Detect whether a linked list has a cycle.
What is the difference between a process and a thread?
Explain time and space complexity (Big O) with examples.
How does a hash map work internally, and what happens on collisions?
Find the longest substring without repeating characters.
What is the difference between an array and a linked list?

Full Software Engineer prep AI mock interview

General Accountant interview prep

1 live role at PostHog

Accounting principles, Tally, GST and financial statements — the accounting interview for finance teams, CA firms and SMEs in India.

Typical Accountant interview rounds

1 Accounting fundamentals. Double-entry, journal entries and the accounting cycle.
2 Statements & analysis. Balance sheet, P&L and cash-flow understanding.
3 Tax & compliance. GST, TDS and statutory basics (India).
4 Tools & scenario. Tally / Excel and a practical bookkeeping problem.

Commonly-asked Accountant questions

What are the three golden rules of accounting?
Explain the difference between accounts payable and accounts receivable.
What is the difference between a balance sheet and a profit & loss statement?
What is double-entry bookkeeping?
Explain the difference between cash accounting and accrual accounting.
What is depreciation and what are the common methods?
What is GST, and how do CGST, SGST and IGST differ?
What is TDS and when is it deducted?

Full Accountant prep AI mock interview

General Data Analyst interview prep

1 live role at PostHog

SQL, Excel, statistics and storytelling with data — the analyst interview for product, BI and analytics teams across India.

Typical Data Analyst interview rounds

1 SQL round. Joins, aggregations, window functions and query writing.
2 Excel / spreadsheet round. Lookups, pivot tables and formulas.
3 Case / analytics round. Business case: define metrics, analyse and recommend.
4 Tool & viz round. Power BI / Tableau dashboards and stakeholder communication.

Commonly-asked Data Analyst questions

What is the difference between INNER JOIN, LEFT JOIN and FULL OUTER JOIN?
Write a SQL query to find the second-highest salary in a table.
What is the difference between WHERE and HAVING?
Explain window functions like ROW_NUMBER(), RANK() and DENSE_RANK().
What is the difference between mean, median and mode, and when is each misleading?
How do you handle missing or null values in a dataset?
Explain the difference between a primary key and a foreign key.
What is normalisation, and why does it matter for analysis?

Full Data Analyst prep AI mock interview

General DevOps Engineer interview prep

1 live role at PostHog

CI/CD, cloud, containers, Kubernetes and infrastructure-as-code — the DevOps / SRE interview for cloud-native and scaling teams.

Typical DevOps Engineer interview rounds

1 Linux & scripting. Shell scripting, permissions, processes and networking.
2 CI/CD & automation. Pipelines, build/release flow and IaC.
3 Cloud & containers. AWS/Azure/GCP, Docker and Kubernetes.
4 Troubleshooting / scenario. Debug a failing deployment or a production incident.

Commonly-asked DevOps Engineer questions

What is the difference between continuous integration, delivery and deployment?
Explain how Docker works and the difference between an image and a container.
What is Kubernetes and what problems does it solve?
Explain the difference between a Kubernetes Deployment, Pod and Service.
What is infrastructure as code, and why use Terraform?
How would you set up a CI/CD pipeline for a microservices app?
How do you troubleshoot a server that's running out of memory?
Explain blue-green vs canary deployments.

Full DevOps Engineer prep AI mock interview

Rehearse your PostHog interview, free

Run a realistic AI mock interview for your target role and get instant feedback on your answers — or take a timed mock test to check your fundamentals before the real thing.

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Interview prep at other companies

PostHog interview — FAQs

How do I prepare for a PostHog interview?

Prepare by role: identify the role you're applying for, then practise the standard interview rounds and most-asked questions for that role type. PostHog is currently hiring for Software Engineer, Accountant and Data Analyst roles, so focus there. Use OnJob's free AI mock interview to rehearse with instant feedback, and review the role-specific question lists below. These are general role-based questions, not leaked PostHog questions.

What questions are asked in a PostHog interview?

We don't publish leaked or company-specific PostHog questions. What we do provide is the general, frequently-asked interview questions for the role types PostHog hires for — such as Software Engineer, Accountant and Data Analyst roles. For example, Software Engineer interviews commonly cover: Reverse a linked list, both iteratively and recursively. Find the two numbers in an array that add up to a target sum. Detect whether a linked list has a cycle. Prepare with these general questions and OnJob's free AI mock interview.

How many rounds does a PostHog interview have?

It depends on the role. A typical Software Engineer interview runs across 4 rounds — Online assessment, DSA / problem solving, System design, Hiring manager / culture fit. Round counts vary by company and seniority; treat this as the general structure to prepare for, not a guarantee of PostHog's exact process.

Is PostHog hiring right now?

Yes — PostHog has 6+ live openings on OnJob.io, refreshed daily, mostly for Software Engineer, Accountant and Data Analyst roles. Browse the live PostHog jobs and see your AI match score on each before you apply.

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