Head of Performance Marketing , NY

Location

New York, NY

Level

Director

Reports To

Head of Growth, B2C

Salary Range

Commensurate with experience

Manifest O.S. is an AI-native company on a mission to replace the billable hour and make legal services more accessible for American businesses and consumers. We power the next generation of AI-native law firms with one unified global brand, a proprietary technology platform, and a centralized back office — enabling lawyers to eliminate the administrative burden and focus on delivering exceptional outcomes for their clients.

Backed by leading venture investors, Manifest O.S. is scaling rapidly.

Our marketing team is a data-driven powerhouse of about 15 people who believe that great marketing starts with understanding exactly who you're talking to and why they should care. We're heavy on analytics, experimentation, and cross-functional collaboration with sales, product, and customer success. The team values technical depth alongside creative strategy, and we're not afraid to get our hands dirty in the data to find insights that drive real business impact.

• 3–6 years of experience in a role where analytical thinking and technical execution were the primary job — this could be performance marketing, growth analytics, marketing engineering, data science applied to growth, or quantitative finance that crossed into marketing
• Has owned a paid program end-to-end — built the tracking, set up the campaigns, analyzed the results, and made the optimization calls — even if the program was small or early-stage
• Demonstrably fast learner on technical tools — can point to a platform, system, or skill they didn't know and ramped on quickly; platform fluency is less important than the ability to develop it
• Proficient with SQL and comfortable in analytics tools — pulls their own data, builds their own models, doesn't wait for a data team to tell them what's happening
• Has a structured approach to testing — knows how to design an experiment, define success criteria upfront, and avoid drawing conclusions from under powered tests
• Consumer-facing background preferred; comfort with high-consideration, trust-intensive categories (legal, financial, healthcare) is a plus

Manifest Law is acquiring tens of thousands of immigration clients through a multi-channel B2C growth engine — and paid is our biggest untapped lever. We’ve validated that paid social works for our business. What we don’t have yet is the technical depth to run it with precision: the audience architecture, the attribution infrastructure, the testing rigor, and the analytical sophistication to turn a working channel into a scalable, predictable acquisition machine.

That's what this role is. You will build our paid program from zero — not by managing a media buy, but by engineering an audience and testing system that identifies the highest-value immigration prospects across our core demographic markets (Chinese, Brazilian, Colombian, Russian) and delivers the right message to the right person at the right cost. This is a technical builder role, not a campaign manager role.

• Build and own the full paid acquisition program across Meta, Tik Tok, You Tube, and Google — from audience architecture to creative testing to budget allocation
• Engineer our audience strategy from the ground up: first-party data segmentation, lookalike modeling, behavioral targeting, and demographic audience builds for our core immigrant communities
• Design and run a rigorous testing program — creative tests, audience tests, landing page tests, bid strategy tests — with clear hypotheses, proper holdouts, and valid conclusions
• Own the attribution layer: set up and maintain accurate conversion tracking,…