Field Marketing Manager, Commercial GTM

About Firsthand

Firsthand has built the first AI-powered Brand Agent platform, transforming the way marketers and publishers engage consumers through their own AI agents, anywhere online.

While most AI applications in marketing and advertising focus on back-office automation, the Firsthand Brand Agent Platform™ powers front-line consumer engagement. Operating across both owned properties and paid media, Firsthand's Brand Agents make a company’s expertise accessible in real time, adapting to consumers’ interests and guiding them towards the information they need to take action. Central to the platform is Lakebed™, the company’s AI-first data and knowledge rights management system that ensures brands retain full ownership and control of their expertise.

Firsthand is led by Jon Heller, Michael Rubenstein, and Wei Wei, whose previous ventures helped build the foundations of modern digital advertising. Backed by Radical Ventures, First Mark Capital, Aperiam Ventures, and Crossbeam Venture Partners, Firsthand is shaping the future of AI-driven consumer engagement.

Firsthand is headquartered in NYC, with team members working together in-office three days a week.

Firsthand is building a new category of AI-powered brand experiences, and demand for our commercialized products is accelerating across marketers, agencies, and premium publishers. As sales activity grows, so does the need for marketing that shows up directly in the field — enabling pitches, supporting live opportunities, and ensuring our teams are prepared to act on the right moments.

We’re hiring a Field Marketing Manager, Commercial GTM to act as marketing’s embedded partner to the sales organization. This role sits within Marketing but is deeply GTM-oriented, focused on accelerating commercial execution opportunities, supporting pitches and events, and helping sales teams bring Firsthand’s products to market faster and more effectively.

This will be the first hire on the marketing team beyond the Head of Marketing, offering a rare opportunity to help shape how marketing operates, prioritizes, and partners with GTM teams from the ground up.

• Serve as marketing’s primary partner to Sales, supporting active opportunities and helping unlock new pitch moments

• Create, customize, and verticalize sales-facing materials for marketers, agencies, and publisher partners

• Support pitches end-to-end, including prep, narrative development, and custom follow-up materials

• Own marketing support for sales-driven events, including planning, prioritization, readiness, and post-event follow-up

• Partner with Marketer Operations and Product to define and maintain bills of materials for commercialized products

• Translate product capabilities into clear, buyer-relevant narratives across industries, objectives, and stages of the customer journey

• Turn repeated sales requests into scalable, reusable marketing assets

• Act as a strong brand representative in customer meetings, partner conversations, and industry environments

• Continuously gather feedback from Sales and iterate quickly to improve materials, messaging, and processes

• 6–10+ years of experience in field marketing, sales enablement, or similar roles within organizations focused on sales-led growth motions

• Strong experience working directly with Sales teams supporting a variety of sales motions and cycles; confident operating close to live deals and in client meetings

• Experience working at high-growth advertising or marketing technology strongly preferred

• Strong understanding of the AI landscape

• Ability to balance speed, quality, and ambiguity in a fast-moving environment

• Strong judgment, ownership mindset, and appetite for building something new

• Based in NYC

Firsthand’s products are powerful and flexible — but unlocking their full commercial potential requires marketing that operates directly in the field. This role ensures our sales teams are equipped with the right stories, materials, and moments to engage buyers effectively and move opportunities forward.

As the first marketing hire beyond leadership, this role will help define how marketing supports revenue at Firsthand — setting the foundation for future hires, processes, and ways of working. You’ll have direct impact not just on near-term sales execution, but on how the marketing organization scales over time.

If you are ready to embark on an exhilarating journey at the forefront of AI, seize this incredible opportunity and apply here. We eagerly anticipate hearing from you!

Note:

Compensation and equity will be market-competitive for well-capitalized, early stage startups and will be discussed during the interview process.