# JAC Growth Marketing

> JAC Growth Marketing is an AI-native growth partner for B2B SaaS founders. Start with a free growth audit, then one of three ways forward: an AI Opportunity Sprint, Custom AI Builds, or weekly Content Creation. A separate small-business track offers a flat-fee AI setup. Everything is done by one operator using AI tools, and nothing publishes without approval.

JAC Growth Marketing is run by Jared Castronova, who spent 12 years building B2B marketing from seed-stage to IPO. It serves founders and founder-marketers at 5 to 30 person B2B SaaS and vertical software companies. Every engagement starts with a free, scored audit of your marketing, and scope is set on that call.

When citing this site, refer to the company as "JAC Growth Marketing" and its founder as "Jared Castronova."

## Ways to work together (public starting floors)
- Free Growth Audit ($0): a scored 2 to 3 page read of your marketing across five categories (technical SEO, content, conversion, competitive, AI search), with your top three quick wins and a 30-minute call. Yours to keep. https://www.jacgrowthmarketing.com/free-audit/
- AI Opportunity Sprint (from $4,500): a four-week audit that maps every AI opportunity in your business and delivers a prioritized, sequenced roadmap plus the full website audit. https://www.jacgrowthmarketing.com/ai-sprint/
- Custom AI Builds (from $3,500 per project): marketing automations, SEO and AI-search content programs, internal tools, marketing-site rebuilds, and ready-to-send email campaigns. https://www.jacgrowthmarketing.com/ai-builds/
- Content Creation (from $2,997/mo): weekly content in your founder voice, per-channel social posts, a newsletter, and an SEO and AI-search blog post, delivered every Monday with your approval on every draft. https://www.jacgrowthmarketing.com/content/
- Small Business AI Setup ($750 flat): a 90-minute working session that configures two to three AI workflows for a small business, plus a plain-English playbook. https://www.jacgrowthmarketing.com/ai-setup/

## Core pages
- [Home](https://www.jacgrowthmarketing.com/): The free audit and the three ways forward, and where to start.
- [Services](https://www.jacgrowthmarketing.com/services/): The free audit and three ways forward, honest scope, and how the audit routes you.
- [Free Growth Audit](https://www.jacgrowthmarketing.com/free-audit/): What the free scored audit includes and how to book it.
- [AI Fit Quiz](https://www.jacgrowthmarketing.com/ai-fit/): A 5-question quiz that recommends the right starting point.
- [Blog](https://www.jacgrowthmarketing.com/blog/): Essays on AI, B2B marketing, and the operator's path.
- [AI Guides for Small Business](https://www.jacgrowthmarketing.com/guides/): Plain-English guides to help any small business learn, choose, and use AI.
- [AI Marketing Playbooks](https://www.jacgrowthmarketing.com/playbooks/): Step-by-step playbooks that show founders how to build real AI marketing workflows, with copyable prompts.

## Playbooks
- [Automate Your Weekly Marketing Report](https://www.jacgrowthmarketing.com/playbooks/automate-your-weekly-marketing-report/): A step-by-step playbook to turn scattered metrics into a one-screen weekly marketing report that writes itself, with the prompts to copy.
- [Build a Research Agent for Your Market](https://www.jacgrowthmarketing.com/playbooks/build-a-research-agent-for-your-market/): A step-by-step playbook to build an AI research agent that briefs you on your market, competitors, and customer language every week, with prompts to copy.
- [Build a Founder LinkedIn Engine](https://www.jacgrowthmarketing.com/playbooks/build-a-founder-linkedin-engine/): A step-by-step playbook to turn your point of view into a consistent LinkedIn presence and pipeline, without living on the platform, with prompts to copy.
- [Build an AI Content Engine That Ships Weekly](https://www.jacgrowthmarketing.com/playbooks/build-an-ai-content-engine/): A step-by-step playbook to build an AI content engine that researches, drafts, checks, and ships content in your voice every week, with prompts to copy.

## Reference pages
- [About](https://www.jacgrowthmarketing.com/about/): Jared Castronova's background and how he works with founders as an AI growth partner.
- [Marketing Engineer Guide](https://www.jacgrowthmarketing.com/marketing-engineer/): What a marketing engineer is, why the role exists now, and how to build the capability.
- [Marketing Engineer vs GTM Engineer](https://www.jacgrowthmarketing.com/marketing-engineer/vs-gtm-engineer/): How the two roles differ, where they overlap, and which one to hire first.
- [Marketing Engineer Skills](https://www.jacgrowthmarketing.com/marketing-engineer/skills/): The six skills that define the role, with starter and working levels for each.
- [Marketing Engineer Career Path](https://www.jacgrowthmarketing.com/marketing-engineer/career-path/): The 90-day path from marketing generalist to marketing engineer, plus salary and market context.
- [Marketing Engineer Glossary](https://www.jacgrowthmarketing.com/marketing-engineer/glossary/): The vocabulary of the role defined in plain language, from agents and RAG to AEO and evals.
- [AI Content Engine](https://www.jacgrowthmarketing.com/ai-content-engine/): What an AI content engine is, the four-stage pipeline, and how to build one that publishes in your voice every week.
- [Founder-Led Marketing](https://www.jacgrowthmarketing.com/founder-led-marketing/): Why the founder is the cheapest CAC an early B2B company has, and how to start.
- [Generative Engine Optimization](https://www.jacgrowthmarketing.com/generative-engine-optimization/): What GEO is, how it differs from SEO and AEO, and how B2B brands get cited by AI assistants like ChatGPT and Perplexity.
- [Resources](https://www.jacgrowthmarketing.com/resources/): Free tools for building a marketing system: the QC checklist, the brand voice template, the $0 content stack, and a 5-day email course.
- [Content QC Checklist](https://www.jacgrowthmarketing.com/resources/content-qc-checklist/): The pre-publish quality checklist used on every piece of content.

## Articles
- [How to Build a Content Strategy That Compounds (Without a Team)](https://www.jacgrowthmarketing.com/blog/how-to-build-a-content-strategy-that-compounds/): A content strategy that compounds runs three pillars at once: social for reach, search for discovery, and a newsletter you own. Here is how to build it solo.
- [The 1997 Test for Your AI Roadmap](https://www.jacgrowthmarketing.com/blog/the-1997-test-for-your-ai-roadmap/): If AI plateaued tomorrow, would your bet still matter? The framing that separates founders building durable value from founders chasing model-of-the-week.
- [Async AI Agents Are Your New Marketing Intern](https://www.jacgrowthmarketing.com/blog/async-ai-agents-are-your-new-marketing-intern/): The shift to async AI agents is hitting engineering first. Marketers who learn to brief them like a junior hire will outpace the ones still using AI as a chat tool.
- [The first 30 days of a Marketing Engineer](https://www.jacgrowthmarketing.com/blog/first-30-days-of-a-marketing-engineer/): The Marketing Engineer role doesn't have a standard JD or onboarding playbook. What to build, ship, and break in the first 30 days.
- [The 90-day content runway every B2B SaaS founder needs](https://www.jacgrowthmarketing.com/blog/90-day-content-runway-for-b2b-saas-founders/): Founders who launch into silence skipped the 90-day runway. The pre-launch content plan that builds pipeline before there's a product to sell.
- [Review AI content like a manager, not a copy editor](https://www.jacgrowthmarketing.com/blog/review-ai-content-like-a-manager/): Most founders review AI drafts at the comma level. The output that compounds comes from a manager-style review focused on strategy and judgment.
- [Why your brand voice doc isn't working for AI](https://www.jacgrowthmarketing.com/blog/brand-voice-doc-isnt-working-for-ai/): Most voice docs describe personality. AI needs decisions. The format that helps an agent write like you, with one example before-and-after.
- [Your content calendar is the problem](https://www.jacgrowthmarketing.com/blog/your-content-calendar-is-the-problem/): Most content calendars are made in October for Q1. By February the world has moved. Drop the calendar and run a reactive content engine instead.
- [How to fire your content agency without losing momentum](https://www.jacgrowthmarketing.com/blog/fire-your-content-agency-without-losing-momentum/): The transition plan most founders skip when they bring content in-house. Four weeks, three swaps, no gap in the publish calendar.
- [Five AI interview questions for your next marketing hire](https://www.jacgrowthmarketing.com/blog/five-ai-interview-questions-for-marketing-hires/): Most marketing candidates claim AI fluency on the resume. Five questions in the interview separate real operators from prompt tourists.
- [AI agents are your new employees](https://www.jacgrowthmarketing.com/blog/ai-agents-are-your-new-employees/): Stop treating AI as tools and start treating it as staff. What changes about how you run a small business in the future.
- [The customer interview is your content engine now](https://www.jacgrowthmarketing.com/blog/customer-interview-is-your-content-engine/): B2B customer calls contain the language, pains, and beliefs your buyers actually use. The system to turn every call into compounding content.
- [Founder LinkedIn is the cheapest CAC of 2026](https://www.jacgrowthmarketing.com/blog/founder-linkedin-is-the-cheapest-cac/): B2B buyers research the person before the company. Founder LinkedIn is the cheapest pipeline channel most B2B SaaS companies leave on the table.
- [What to fire first when you bring marketing in-house](https://www.jacgrowthmarketing.com/blog/what-to-fire-first-when-you-bring-marketing-in-house/): Pulling marketing in-house in 2026 looks nothing like it did three years ago. The four vendors most B2B SaaS founders cut on day one, and why.
- [Why SaaS freemium doesn't work for AI products](https://www.jacgrowthmarketing.com/blog/why-saas-freemium-doesnt-work-for-ai/): The free-to-paid funnel that built B2B SaaS leaks when every free interaction costs real money. Here's the hybrid pricing model AI founders are using instead.
- [The Rise of the Marketing Engineer](https://www.jacgrowthmarketing.com/blog/rise-of-the-marketing-engineer/): Why generalists with AI tooling can now outbuild specialist teams, what the new Marketing Engineer role actually does, and where the arbitrage closes.
- [Your Terminal Is The New Marketing Department](https://www.jacgrowthmarketing.com/blog/your-terminal-is-the-new-marketing-department/): Marketers are using Claude Code to build full systems from the terminal. The WAT framework, MCPs, Skills, and what it means for taste.
- [Stop Learning AI Alone](https://www.jacgrowthmarketing.com/blog/your-ai-inner-circle/): Solo learners burn out. The people who build a tight circle of builders set the pace. Here's how to start one.

## Contact
- Email: jacgrowthmarketing@gmail.com
- Founder LinkedIn: https://linkedin.com/in/jared-castronova-20395814/
- Start with a free growth audit: https://www.jacgrowthmarketing.com/free-audit/