Haoyu 'Leon' Tang | Content & Growth Marketing

Haoyu ‘Leon’ Tang

Content, Growth Marketing & Analytics

Columbia Business School MS Marketing Science, Feb 2027

Two years of content creation across two ventures. Built the organic creative and briefed the influencer network that took HIII Sports from zero to 5,000+ Instagram followers, then built the acquisition engine (ads, email, positioning) that got AllFactor to 160+ enterprise clients. Now at Columbia Business School, studying the science behind the work.

More about me

AllFactor - Acquisition, from zero

Built the acquisition engine for a B2B analytics SaaS from scratch. Owned Google Ads end to end to 54,000+ impressions and 8.5% CTR, writing and testing the ad creative that drove 196 conversions. When paid search plateaued, built an email funnel from zero: sourced a 4,500-prospect list at zero CAC through technographic scraping and content partnerships, then A/B tested subject lines and CTAs to 30–50% open rates, converting 10 enterprise clients from email alone. Reshaped positioning around data freshness after 50+ industry interviews, acquiring 160+ e-commerce sellers.

Email marketing platform dashboard showing an AllFactor campaign's send, delivery, open, and click funnel, with a 46.3% open rate.

AllFactor marketing email design featuring inventory and sales-signal tracking stats.

AllFactor marketing email design featuring product-tracking stats and a market intelligence scan graphic.

Google Ads dashboard showing AllFactor's clicks, cost per conversion, CTR, and conversion rate trending over a four-week window, with an 8.22% CTR.

Event creative for the Columbia Entrepreneurs Organization (CEO club)

Designed to someone else's brief: Assistant VP of Marketing at the CEO club. Fireside-chat and masterclass promotion for its Instagram.

Event flyer illustration announcing a fireside chat with a former Chief Product Officer of Hinge, hosted by Columbia Business School's CEO club.

Event flyer for a masterclass on defining product-market fit for emerging technologies, featuring a Google Gemini Head of Product.

Event flyer for a conversation with a Slow Ventures partner about the creator economy, hosted by Columbia Business School's CEO club.

HIII - A brand from nothing

Co-founded a D2C outdoor gear brand and ran its marketing end to end. Produced the organic brand creative and briefed 35 micro-influencer creators to generate launch UGC, growing Instagram from zero to 5,000+ followers. Launched across digital, grassroots and physical channels: flyering, street teams, pop-up signage, demo days, and brand co-marketing partnerships. Defined North American targeting with K-Means clustering and PCA on 500K+ data points, surfacing latent "Neo Nomad" segments in FL and NC that drove 203 launch-day sales. A/B tested product claims across 125 Amazon and TikTok Shop SKUs, lifting conversion 21%.

See the HIII archive

Instagram story announcing an HIII Top Golf social event, with two people at a driving range.

Instagram post from HIII's own account showing the Hiii electric skateboard trucks and motor assembly on a wood floor.

Marketing slide titled Outdoor Technology: Mountix, Engineered for Adventure, showing the electric skateboard in a forest setting.

Marketing slide titled Mountix: Power and Performance Specs, showing an exploded diagram of the skateboard's motors, battery, and chassis.

HIII pitch-deck slide, 'Metaverse & IP Cooperative Operations,' describing collaborations with Adidas and LiNing and ownership of Bored Ape NFT assets, alongside cultural icons Steph Curry and Justin Bieber.

New York, in progress

Recent, self-initiated. Didn't stop making content after AllFactor and HIII, just moved it into product interfaces.

See the interfaces work

Screenshot of the CBS Uber Planner web app showing hourly fare estimates for a campus route.

Screenshot of the Walkin' Here app interface showing daily NYC-survival lessons and streak progress.

Get in touch

Resume and references, one message away.

Download resume