Senior Paid Media Manager — Multimillion-Dollar Growth & AI

Mimecast; Massachusetts; On-site; USD 132,000 - 198,000; Full time

Job summary

Mimecast is seeking a Senior Paid Media Manager to own and scale paid acquisition programs across major channels. You’ll report to the Global Digital Marketing team and drive full-funnel demand generation, cross-sell, and brand campaigns for security practitioners and decision-makers.

You’ll manage multimillion-dollar media budgets, lead agency and internal teams, and turn performance data into strategic recommendations with clear senior-level impact.

Qualifications

• Deep hands-on paid media experience across Google, LinkedIn, Meta and Reddit.
• Proven track record managing multimillion-dollar annual media budgets.
• Experience leading agency relationships and cross-functional teams.

Responsibilities

• Plan, execute, and optimize paid media campaigns from strategy through reporting.
• Own multimillion-dollar media budgets with budget pacing and ROAS accountability.
• Lead agency partners and internal teams, setting briefs and performance standards.
• Build performance dashboards and translate data into leadership-ready insights.
• Collaborate with content, design, and demand generation on creative strategy.
• Develop audience segments, retargeting pools, and ABM targeting lists.
• Lead tests across ad copy, formats, bidding, and audience targeting.
• Monitor channel changes and propose proactive optimization ideas.
• Support integrations across martech stack and AI automation initiatives.

Skills

Paid media

Google Ads

LinkedIn CM

Meta Ads

Reddit Ads

Budget management

Agency relationships

Cross-functional teams

Data analytics

AI in paid media

Tools

GA4

GTM

CAPI

Salesforce CRM

Marketo

HubSpot

6sense

Demandbase

BI tools

Job description

Mimecast is seeking a Senior Paid Media Manager to own and scale paid acquisition programs across major channels. You’ll report to the Global Digital Marketing team and drive full-funnel demand generation, cross-sell, and brand campaigns for security practitioners and decision-makers.

You’ll manage multimillion-dollar media budgets, lead agency and internal teams, and turn performance data into strategic recommendations with clear senior-level impact.