Growth marketer

What does a growth marketer do?

A growth marketer finds, tests and scales ways to win and keep customers.

The work covers the full customer journey: paid ads, landing pages, sign-up, onboarding, and repeat use. Each change is treated as an experiment with a number to beat.

In Singapore, growth marketers sit in start-ups, scale-ups, e-commerce firms, fintechs, and the digital teams of larger companies. The role often reports to a head of marketing or a head of growth. Some teams place it inside the product group.

You work with product managers, data analysts, engineers, designers, and sales or customer teams. Product and engineering help ship changes. Analysts help check that results are real.

What the work involves

• Review dashboards for sign-ups, cost per acquisition, and retention, and spot what moved.
• Plan and launch A/B tests on ads, landing pages, emails, and onboarding steps.
• Adjust campaigns in Google Ads and Meta Ads, and check which ones bring in customers who stay.
• Pull data with SQL or product analytics tools to build funnel and cohort views.
• Set up automated messages and lifecycle journeys for new, active, and lapsing users.
• Write up test results and share what to scale, stop, or retest with product and sales.

Pay in Singapore

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Skills a growth marketer needs

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Growth marketer job description

We are hiring a growth marketer to increase qualified sign-ups and repeat use for our Singapore business.

You will run weekly experiments across paid channels, landing pages, and lifecycle messages. You will track results against clear targets and report them to marketing and product leads. This role suits someone who likes numbers and testing ideas quickly.

Responsibilities

• Plan, run, and document experiments across acquisition, activation, and retention.
• Manage paid campaigns on Google Ads and Meta Ads, including budgets, audiences, and creative tests.
• Build and test landing pages and sign-up flows to raise conversion.
• Design lifecycle journeys across email, push, in-app messages, and chat channels.
• Track performance with GA4, product analytics tools, and a mobile measurement partner where there is an app.
• Query data in SQL to build funnel, cohort, and retention views.
• Calculate customer acquisition cost, payback period, and lifetime value by channel.
• Set up workflow automation to move leads and data between tools.
• Follow the Personal Data Protection Act (PDPA) when collecting data and sending marketing messages.
• Report results to marketing and product leads and recommend where to spend next.

Requirements

• A diploma or degree in marketing, business, economics, statistics, or a related field. Strong self-taught or bootcamp backgrounds are also common.
• Typically 2 to 4 years in digital marketing, performance marketing, CRM, or product growth.
• Hands-on use of Google Ads, Meta Ads, and GA4. Experience with Amplitude or Mixpanel is a plus.
• Working SQL for pulling and checking your own data.
• Understanding of A/B test design, sample size, and statistical significance.
• Clear writing and the ability to explain results to non-marketers.

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Growth marketer career path

Growth marketers usually start in a campaign or digital role and move toward owning a channel, then a whole funnel, then a team.

Titles vary by company, and some firms place growth inside product.

1. Growth marketing executive

   Entry

   Runs campaigns and tests under guidance, builds reports, and learns the ad platforms and analytics tools.

2. Growth marketer

   Mid

   Owns a channel or funnel stage, designs experiments, and reports results with little supervision.

3. Senior growth marketer

   Senior

   Leads the experiment programme across channels, sets test priorities, and mentors junior staff.

4. Growth manager

   Lead

   Manages a small team and a budget, sets growth targets with product and sales, and answers for results.

5. Head of growth

   Head

   Sets growth strategy across acquisition, activation, and retention, and works with senior leaders on targets and investment.

The titles are ones commonly used in Singapore; employers may name the levels differently.

Related jobs and their pay

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Growth marketer interview questions

We wrote these questions from the skills this job needs. They are not an official question bank.

1. How would you design an A/B test for a new sign-up page?

   What a good answer covers

   • States a clear hypothesis and one primary metric
   • Explains the unit of randomisation, such as visitor or user
   • Estimates sample size and test length before launch
   • Names guardrail metrics, such as refund rate or lead quality
   • Sets the decision rule before looking at results

2. A test shows a 10% lift after three days. Do you ship the change?

   What a good answer covers

   • Explains the risk of stopping early when results look good
   • Checks that the planned sample size was reached
   • Runs the test over full weekly cycles
   • Looks at guardrail metrics and segments
   • Considers a follow-up test to confirm the lift

3. How do you work out whether a paid channel is worth scaling?

   What a good answer covers

   • Defines customer acquisition cost with all costs included
   • Uses contribution margin, not just revenue
   • Compares lifetime value with acquisition cost using cohort data
   • Checks the payback period against cash constraints
   • Notes that early cohorts may mislead

4. Last-click attribution says search drives most sales. When would you doubt that?

   What a good answer covers

   • Explains that last-click ignores earlier touchpoints
   • Names other models, such as first-touch and data-driven
   • Proposes a holdout or geo test to measure real lift
   • Compares platform reports with analytics and backend data
   • Accepts that no model is perfect and states the limits

5. Write the logic for a query that shows 30-day retention by sign-up week.

   What a good answer covers

   • Builds a cohort table from each user's sign-up date
   • Joins to an events table and defines what counts as active
   • Calculates the day gap between sign-up and activity
   • Counts distinct users, not events
   • Groups by sign-up week and divides by cohort size

6. Install numbers in Meta Ads do not match your mobile measurement partner. Why might that be?

   What a good answer covers

   • Compares attribution windows and click versus view rules
   • Notes that iOS privacy limits reduce the data available
   • Checks time zones, deduplication, and event definitions
   • Considers fraud or bot traffic
   • Decides which source to treat as the reference for decisions

7. How would you build a lifecycle journey for users who sign up but never activate?

   What a good answer covers

   • Defines activation as a specific action
   • Maps trigger points in the first days after sign-up
   • Picks channels and timing for each message
   • Sets rules to avoid over-messaging
   • Measures the journey against a holdout group

8. How do you use ChatGPT or an automation tool in your growth work, and how do you check the output?

   What a good answer covers

   • Gives a real use, such as drafting ad variants or tagging survey replies
   • Describes a workflow, for example sending new leads to a CRM through n8n or Zapier
   • Reviews copy and facts before anything goes live
   • Avoids pasting customer personal data into public tools
   • Tracks whether the AI-assisted work performs better in tests

1. Sign-ups from Google Ads are steady, but cost per sign-up has risen for two months. What do you check?

   What a good answer covers

   • Splits cost by campaign, keyword, and device to find the change
   • Checks for new competitors or higher bids in the auction
   • Reviews landing page conversion and tracking tags
   • Looks at downstream quality, not just sign-ups
   • Tests fresh ad copy if the creative is tired

2. A landing page gets plenty of traffic but few sign-ups. Where do you start?

   What a good answer covers

   • Checks that the traffic matches the page's offer
   • Reviews message match between the ad and the page
   • Looks at form length, page speed, and mobile layout
   • Uses heatmaps or recordings to see where visitors stop
   • Prioritises changes by expected effect and effort, then tests them

3. Your budget is cut by a third halfway through the quarter. How do you decide what to keep?

   What a good answer covers

   • Ranks channels by marginal cost and payback, not average results
   • Protects cheap retention and lifecycle activity
   • Pauses weak campaigns before cutting proven ones
   • Keeps a small budget for testing new ideas
   • Explains the trade-offs to your manager with numbers

1. Tell us about an experiment that failed. What did you do next?

   What a good answer covers

   • Describes the hypothesis and what actually happened
   • Shows what the result taught the team
   • Explains how it changed the next test
   • Shares the result openly instead of hiding it

2. Describe a time you disagreed with product or sales about a growth priority.

   What a good answer covers

   • States both positions fairly
   • Uses data or a small test to settle the point
   • Keeps the working relationship intact
   • Describes the result, even if you were wrong

3. You have more test ideas than time. How do you choose what to run?

   What a good answer covers

   • Uses a simple scoring method, such as expected impact, confidence, and effort
   • Weighs how quickly each test will give a result
   • Checks that tests do not overlap or clash
   • Reviews the backlog regularly with the team

1. A colleague suggests sending promotional WhatsApp messages to a purchased list of Singapore mobile numbers. What do you say?

   What a good answer covers

   • Asks where the list came from and whether the seller had consent to share the numbers
   • Raises PDPA obligations for consent and marketing messages
   • Mentions checking numbers against the Do Not Call registry where it applies
   • Insists on a clear opt-out in every message
   • Involves the company's data protection officer and checks current rules

Common questions about a growth marketer job

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