Growth Marketer

LeanTeams; Polska; Remote; PLN 217,000 - 461,000; Part time

Job summary

LeanTeams is seeking its first Performance Marketer to own paid acquisition for a consumer AI SaaS product. This remote, part-time role involves launching acquisition from scratch, running experiments, and tying paid activity to product engagement.

You will work directly with the founder and product team, with flexibility in hours and budget during early stages. The position emphasizes hands-on growth for a consumer-focused product, with no legacy campaigns and a lean budget.

Qualifications

• Real hands-on growth work for consumer SaaS, subscription apps, or product-led digital products.
• Strong command of Google Ads and Meta Ads, from technical setup to campaign optimization.
• Experience launching acquisition initiatives for early-stage startups or products with limited historical data.
• Understanding activation, retention, acquisition economics, and how paid growth connects to product engagement.
• Ability to implement Meta Pixel, Conversions API, Google Ads conversions, and reliable event tracking.
• Familiarity with PostHog, Mixpanel, Amplitude, or similar analytics tools.
• Independent decision-making, analytical thinking, and clear communication in English.
• Experience with X Ads, AI products, productivity apps, research platforms, or EdTech adds value.

Responsibilities

• Own the paid growth strategy: audiences, channels, and early budget allocation.
• Launch from scratch: set up Google Ads, Meta Ads, and potentially X with pixels and tracking.
• Design small-budget tests across audiences, creatives, messaging, and funnels.
• Link acquisition to product behavior using analytics to guide decisions.
• Measure cost per activated user, activation rates, retention, and acquisition efficiency.
• Collaborate with founder to identify winning experiments and scale investments.

Skills

Google Ads

Meta Ads

Analytics literacy

English communication

Strategic thinking

Tools

PostHog

Mixpanel

Amplitude

Conversions API

GA4 / Pixel setup

Job description

First Performance Marketer - Consumer AI SaaS

Build growth from day one.

An early-stage AI startup is building an agentic research companion for scientific researchers — a new way to discover scientific knowledge, explore literature, organize research, and turn information into meaningful insights.

The product is live, the ambition is big, and the company is preparing for its first funding round.

Now comes the next challenge: finding the right users and turning early adoption into sustainable growth.

We're bringing on our first Performance Marketer to lead that effort.

This is a hands-on, strategic opportunity to work directly with the founder, build paid acquisition from zero, and help shape the growth of a consumer AI product at a defining stage.

Your playground: zero to one.

No legacy campaigns. No established acquisition playbook. No big budgets to hide behind.

You'll have the freedom and responsibility to figure out what works.

• Own the paid growth strategy. Decide which audiences to reach, which channels to prioritize, and how to allocate an early-stage budget.
• Launch from scratch. Set up and manage Google Ads, Meta Ads, and potentially X, including accounts, pixels, conversion tracking, and integrations.
• Experiment intelligently. Design small-budget tests across audiences, creatives, messaging, and acquisition funnels.
• Connect acquisition to product behavior. Use PostHog to understand who activates, engages, and returns — not just who clicks or signs up.
• Find the growth signals. Measure cost per activated user, activation rates, retention, and acquisition efficiency.
• Turn insights into decisions. Work directly with the founder to identify winning experiments and decide what deserves more investment.

You’ll have access to existing product analytics infrastructure and engineering support, while independently driving the paid acquisition roadmap.

Consumer growth is your territory.

This opportunity is for someone who has already helped consumer or prosumer SaaS products acquire and activate users.

Not just B2B lead generation. Not just traffic campaigns. And not just impressive dashboards filled with clicks.

We value experience that demonstrates:

• Real hands-on growth work for consumer SaaS, subscription apps, or product-led digital products.
• Strong command of Google Ads and Meta Ads, from technical setup to campaign optimization.
• Experience launching acquisition initiatives for early-stage startups or products with limited historical data.
• A clear understanding of activation, retention, acquisition economics, and how paid growth connects to product engagement.
• The ability to implement Meta Pixel, Conversions API, Google Ads conversions, and reliable event tracking.
• Familiarity with PostHog, Mixpanel, Amplitude, or similar analytics tools.
• Independent decision-making, analytical thinking, and clear communication in English.

Experience with X Ads, AI products, productivity apps, research platforms, or EdTech adds value.

And if science, research, academia, or the way knowledge is created genuinely interests you, even better. You’ll understand the people we’re building for.

Small team. Direct impact.

Stage: Early-stage startup, preparing for its first funding round

Your role: First Performance Marketer, owning paid acquisition strategy and execution

Collaboration: Directly with the founder and product team

Commitment: 5-10 hours/week initially, with flexibility during setup

Location: Fully remote

Engagement: Part-time, freelance

Initial focus: Acquisition experiments and user growth over the next 3-6 months

Budget: Lean experimentation, with room to scale based on results

Compensation: Negotiable hourly rate in USD.