Growth Marketing Manager

Harmonic Security lets teams adopt AI tools safely by protecting sensitive data in real time with minimal effort. It gives enterprises full control and stops leaks so that their teams can innovate confidently.

We are led by cybersecurity experts and backed by top investors including N47, Ten Eleven Ventures, and In-Q-Tel.

We have achieved early traction and product-market fit with a world-class team, and we are now focused on building a category-defining company. This is your opportunity to join us early and shape not just a product, but a category.

You will report to the Director of Demand Generation and work closely with GTM team leaders. This is a hands-on role within a lean, high-performing marketing team that values experimentation, data-driven decision making, and rapid iteration. You will be a key contributor to our go-to-market engine, directly influencing how we acquire and convert customers in a fast-growing category.

We are hiring a marketer who can obsess over growing our online presence and acquiring new customers via paid search, paid social, and SEO/AEO efforts. You will own the full strategy and execution of our acquisition channels, from campaign setup and daily optimization to creative testing and performance reporting. This role requires both strategic thinking and tactical execution, with a relentless focus on driving pipeline and reducing customer acquisition costs.

• Own the end-to-end execution of paid campaigns across Google (SEM) and LinkedIn / Reddit / X / Meta (Paid Social)

• Manage campaign set up, daily monitoring, bid management, and budget pacing
• Find ways to use AI tools like Claude or others to manage campaigns and make optimizations
• Develop and execute organic search growth strategy including both traditional SEO tactics as well as new AEO / GEO tactics
• Work with our Head of Brand on developing and testing new ad creative and landing pages
• Conduct keyword research for both paid bidding and organic content gaps
• Optimize conversion rates
• Manage performance reporting and attribution

• Get feedback from the sales team around prospects from your campaigns and optimize accordingly

• Increase pipeline contribution (net new meetings booked) from paid marketing programs and organic search efforts (SEO/AEO)
• Revamp existing paid search and social campaigns for full funnel demand creation and capture, from brand awareness campaigns to retargeting campaigns
• Reduce CAC across LinkedIn, Reddit, and Google
• Increase velocity of testing on each platform including audiences, creatives, and landing pages / CTAs

• 3-5 years experience running Google Ads, LinkedIn Ads, and Reddit Ads
• 3-5 years experience running SEO
• Some experience dabbling in AEO/GEO efforts or willingness to go learn and experiment
• Experience and enjoyment using AI tooling for your role
• A strong hunger for growth, experimentation, and learning
• Comfort operating in fast-paced, experimental environment
• B2B experience is a must (cybersecurity or related industries bonus points!)
• Ability to run quantitative data analysis

• You have managed significant paid media budgets across multiple platforms and can show measurable impact on CAC and pipeline
• You are comfortable working in the platforms daily, not just reviewing dashboards
• You have experience with both traditional SEO and emerging tactics like AEO and GEO
• You thrive in environments where you can test, learn, and iterate quickly
• You can translate data into actionable insights and communicate performance clearly to stakeholders
• You have worked in B2B environments, ideally in cybersecurity or adjacent technical categories

This is not just a job. It is an opportunity to be part of a team that is redefining cybersecurity and AI safety. We believe today's talent is tomorrow's success, and we are committed to creating an environment where you can do the best work of your life.

• Competitive compensation and meaningful equity with a direct stake in Harmonic's success
• Comprehensive benefits including health, dental, vision, and 401k matching
• A small, passionate team that values transparency, creativity, and learning
• Thoughtful leadership that cares deeply about growth, impact, and people
• Annual global offsites
• The chance to directly shape both our product and our culture as we build a category-defining company

We embrace new, unfamiliar situations that require initiative and rapid decision-making. We orient ourselves quickly and deliver results with minimal guidance.

We raise our hands, take on challenges, and assist others whenever possible. We hunger for opportunities to learn and do more.

We support one another to create cohesion and unity. We collaborate openly, share feedback honestly, and help everyone produce their best work.