How this Canadian Startup Bought Millions of Impressions for $8,000

If you spent any time on tech LinkedIn in the spring of 2026, you probably saw them. They were everywhere. A highly coordinated swarm of 20-something engineers posting about a little-known Waterloo AI startup called Polarity.

By May, Polarity had generated an estimated 1 to 5 million organic impressions, flooded their pipeline with demo calls from enterprise engineering leaders, and effectively monopolized the attention of the Canadian tech corridor.

Early rumors and hype posts claimed the cohort hit 400 million combined views. But evaluating their follower counts, typical viral spread, and the limits of the Canadian tech niche, 5 million actual feed impressions is more plausible.

On LinkedIn, that is an absolute goldmine. If you were to buy 5 million highly targeted impressions on LinkedIn's B2B ad platform--where 2026 tech/SaaS CPMs regularly float between $35 and $70--you’d be staring down an invoice for roughly $175,000 to $350,000

I suspect Polarity did it for about $8,000 in actual cash outlay (or within that ballpark).

Here is exactly how a startup operating on a lean $250,000 seed round engineered one of the most effective, asymmetrical B2B growth hacks of the year.

Most of this information was obtained from anonymous interviews or by analyzing posts. Nobody would spill all of the details, so a lot of it is speculation.

The Architect and the Anti-Creator

The campaign began in mid-March when Jay Chopra, Polarity’s Co-Founder and COO, posted a simple announcement: "This spring, I'm bringing together a small group of students." Within 72 hours, they had over 250 applications.

Then came Sammy Tourani.

Tourani joined Polarity as Head of Growth specifically to run the program. He didn’t invent the "student fellowship" model from scratch—he internalized it while participating in a similar program at Boardy, a Y Combinator-backed startup. Tourani is a bit of an anomaly. Before turning 21, he had participated in 11 hackathons, secured a $5,000 incubator grant, obtained security clearance to work with nuclear reactors, and scored an invite to YC’s exclusive AI Summit.

His kickoff announcement poured gasoline on the fire: "I'm joining Polarity to run one of the most hyped fellowships in all of Canada. Applications close in 48 hours."

They ultimately received over 800 applications. But Polarity wasn't looking for influencers.

"We didn't hire content creators. We hired builders," Tourani explains. "They are currently working at Microsoft, Shopify, Tesla—going to New York or San Francisco, everywhere."

This is the first secret to the campaign's success. Polarity builds Paragon, an autonomous "AI QA Engineer" that reviews pull requests and writes end-to-end tests. If you want a VP of Engineering to buy your highly technical DevTool, you can't have lifestyle influencers pitching it. You need credible engineers—people who understand PRs, technical debt, and deployment pipelines.

By selecting 23 builders with an average age of 21, Polarity secured the perfect messenger: young, highly technical, and hungry for a public platform.

The Viral Cascade (and Manufactured Scarcity)

The fellowship itself became a recursive marketing flywheel. In a stroke of architectural genius, Polarity only selected half the cohort in the first phase. They then weaponized scarcity.

Each of the initial fellows was given exactly one referral slot to bypass the queue and send a candidate directly to the final interview round. This created a cascading viral loop across the platform:

1. A fellow posts: "I got in, and I have one referral—pitch me why you deserve it."
2. Dozens of highly qualified applicants comment with their life stories and GitHub links.
3. The post goes algorithmic supernova due to the dense, high-quality comment engagement.
4. More people discover Polarity, apply, and DM the fellows.
5. The cycle repeats across 20+ individual accounts. Time after time, the highest-engaging posts in the program weren't about the software—they were about the program itself. Dennis Chen, a 20-year-old fellow, got 97 comments on his referral post alone. The FOMO was palpable.

Barter Economics: How to Spend $8,000 to get $200,000+ of Value

Information on the exact budget is closely guarded, but analyzing the program's structure reveals a masterclass in startup "barter economics." Nobody was getting rich off flat stipends. Instead, Polarity replaced cash with network effects, equity, and zero-marginal-cost software.

Instead of burning their $250k seed round on LinkedIn Ads, they spent it on community and variable-cost incentives:

• Performance-Based Pay: Fellows weren't paid flat rates. They were paid via CPM (Cost Per Mille) for post impressions and referral payouts for signups they drove. If a post flopped, it cost Polarity nothing. If it went viral, Polarity paid a highly discounted creator CPM rather than LinkedIn's exorbitant B2B ad rates.
• Infinite-Margin Perks: Each fellow received 100 Paragon credits a month (a $150 value). For Polarity, the marginal cost of these seats was zero.
• Community Over Venues: Instead of renting expensive event spaces, they leveraged their network. They hosted a hotpot dinner at a local hacker house, shot content at a student cafe, and took the cohort to a Blue Jays game. "Take the money you'd spend on ads, and spend it on building a community," Tourani says. "A $2K rooftop dinner, flying them to a Jays game... It makes them feel like they are a part of something."

In return, the fellows received the ultimate currency for a 21-year-old builder: prestige. They gave themselves titles like "AI QA Engineer," which permanently sit on their resumes. They gained direct access to top Toronto startup founders, and they exploded their personal brands.

"Their brand is our brand, our brand is their brand," Tourani notes.

The Coherence Principle

A massive risk of letting 23 ambitious 20-somethings post about your startup is that the messaging becomes a chaotic, disjointed mess. Polarity solved this with an approval process.

"The content you post, the presence--it comes down to design," Chopra told me. "Stay consistent with a formula: timing, words, graphics, platforms, writing style. All that matters for B2B. Coherence."

Fellows were required to post 1-2 times a week, weaving Paragon into their authentic, day-to-day coding struggles. It wasn't just noise; it was a coordinated, decentralized narrative. While the fellows generated top-of-funnel awareness, Chopra was working the backend, using custom retargeting tools to identify which engineering leaders were visiting the Polarity site, cold-DMing them, and closing them on live demo calls.

The 80% Rule

It is tempting to look at Polarity's playbook, copy the mechanics, and assume you'll easily generate 5 million B2B views. You probably won't.

"I know that the secrets don't matter," Tourani admits. "It's all about the execution of the person running the program and their ability to turn it into a real family, a real movement."

Tourani estimates that 80% of the program's success came down to the human element—the 1-on-1 relationships, the late-night group chats, the shared belief that they were genuinely building the next great Canadian tech company.

You can copy the CPM structure. You can copy the referral loop. But you can't fake a movement.

Steve Hanov has been coding since age 8, worked at Microsoft, BlackBerry, founded websequencediagrams.com and eh-trade.ca. This blog has been featured on the front page of HackerNews dozens of times. Follow him on LinkedIn as he takes on the biggest challenge a technical founder can tackle: GTM/Distribution.