Performance Marketing Manager, Paid Search & AI Advertising

The role

You will own and scale paid search and emerging AI advertising channels including Google Ads, Bing, and ChatGPT. You will manage the entire paid acquisition experience from strategy and campaign building to landing page optimization and pipeline driving.

What you will do

• Own strategy across Google Ads, Bing, and ChatGPT advertising.
• Develop channel-specific strategies based on audience intent and targeting.
• Own budget allocation, forecasting, and performance against pipeline targets.
• Build, launch, and manage campaigns across Google Ads, Bing, and ChatGPT.
• Write and test ad copy in partnership with Product Marketing.
• Build and optimize dedicated landing pages using Webflow or similar tools.
• Develop and execute A/B tests across landing page messaging, layouts, CTAs, and forms.
• Own performance reporting across spend, traffic, conversions, and pipeline.
• Partner with Product Marketing, Web, Design, and Marketing Operations.
• Optimize conversion paths for developers and enterprise buyers.

Required qualifications

• 5–11 years in performance marketing, paid search, or B2B growth marketing.
• Deep hands-on expertise in Google Ads.
• Experience managing Microsoft Advertising.
• Proven experience personally building, launching, and optimizing paid search campaigns.
• Strong understanding of campaign architecture, keyword intent, bidding strategies, negative keywords, and search budget optimization.
• Experience testing new advertising platforms or emerging acquisition channels.
• Strong experience with conversion rate optimization, landing page development, and A/B testing.
• Experience managing meaningful budgets and optimizing toward qualified pipeline and revenue outcomes.
• Strong analytical skills and fluency in CPC, CVR, CPL, cost per opportunity, pipeline contribution, and attribution.
• Working knowledge of Google Ads, Microsoft Advertising, GA4, Google Tag Manager, HubSpot, Salesforce, and Flint/Webflow.
• Comfortable with technical products and developer audiences.
• A strong experimentation mindset and willingness to build new programs without an established playbook.

Nice to have

• Ideally in developer tools, infrastructure, or technical SaaS.
• Curiosity about AI-native search and advertising is important.

Benefits

• Medical, dental, and vision coverage
• Flexible vacation
• 401(k) plan
• Life insurance
• Meals on in-office days in the US
• Meaningful equity

About the company

LangChain builds the foundation for agent engineering, helping developers move from prototypes to production-ready AI agents. The platform includes LangSmith, open-source frameworks, and the LangSmith Engine.