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Top Series B companies in Toronto

Companies that have closed a Series B - proven scaling motion, hiring aggressively. Filtered to companies headquartered in Toronto.

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Built from a search like: “Top Series B companies in Toronto”

Ranked by current headcount across Series B companies headquartered in Toronto. Refreshed monthly.

  1. 1
    Zafin· Downtown Toronto (Harbourfront East / Union Station / Toronto Island), Ontario, Canada

    Zafin is an AI platform company for regulated institutions. Built from more than 20 years of operating in demanding regulated technology environments, Zafin brings structure, intelligence and accountability to how critical work, systems and decisions are created, governed and improved. Zafin’s portfolio includes three platforms: Zafin AIOS, Zafin Banking Platform and Zafin IO. Zafin AIOS is an end-to-end agent orchestration platform and control plane for governed agentic work. It helps regulated institutions orchestrate work performed by internal and approved third-party agents from intent to governed outcome, with human authority, cost controls and proof of work built into the work path. Zafin Banking Platform is the AI-powered banking execution platform for product, pricing, offers, billing, loyalty, relationship and deal logic across retail and corporate banking. It externalizes critical banking logic from legacy environments so banks can launch propositions faster, personalize offers, manage complex relationships and govern how banking value is structured and executed. Zafin IO is the integration platform for regulated institutions. Proven first in banking, it connects data, events, services, workflows and applications across enterprise environments so institutions can connect legacy and modern systems and modernize progressively without disrupting critical operations. Together, they reflect Zafin's core discipline: helping institutions move faster while preserving governance, evidence, control and accountability. Headquartered in Toronto, Canada, Zafin serves institutions across North America, EMEA, and Asia-Pacific. For more information, visit www.zafin.com

    • Series B
    • 902 employees
    • Founded 2002
  2. 2
    AfterShip· Toronto, Ontario, Canada

    AfterShip is the AI post-purchase platform built for the brands obsessed with what happens after checkout. More than 20,000 brands run their post-purchase on AfterShip — including Mejuri, AWAY Travel, SKIMS, Gymshark, FIGS, DIME Beauty, Dr. Squatch and more — and we're the infrastructure behind Shopify, TikTok Shop, PayPal, and OpenAI.We've tracked over 11B shipments, processed 16M returns, and connected merchants to 1,400+ carriers worldwide since 2012 — bringing order tracking, shipping, returns, warranty, and AI delivery predictions into one unified system.

    • Series B
    • 429 employees
    • Founded 2012
  3. 3
    Knix· Downtown Toronto (Kensington Market / Chinatown / Grange Park), Ontario, Canada

    Knix is an award-winning intimate apparel and activewear brand that is re-inventing intimates for real life. Through our innovative products and our engaged community, we are empowering people everywhere to be unapologetically free. Launched in 2013, we are one of the fastest-growing intimate apparel brands in North America and are globally recognized as an innovator within the apparel space. We reach over 3 million customers through our online stores, Knix retail locations across North America and channels such as wholesale and Amazon. We are revolutionizing the apparel industry with our best-in-class customer experience, innovative products and brands Knix and Kt by Knix. Learn more at www.knix.com or follow our journey @knix and @ktbyknix on social.

    • Series B
    • 369 employees
    • Founded 2013
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  5. 4
    PartnerStack· Downtown Toronto (CN Tower / King and Spadina / Railway Lands / Harbourfront West / Bathurst Quay / South Niagara / YTZ), Ontario, Canada

    PartnerStack is the only AI-native partnership platform, built on the world's largest B2B SaaS partner network.More than 600 B2B SaaS companies use PartnerStack to recruit, activate, track, pay and optimize every kind of partner — affiliates, resellers, referral partners, co-sellers and B2B influencers — in one place. The PartnerStack Network is home to over 150,000 active partners, so you're not launching into an empty program. You're launching into a network that already sells.Most partner teams run all of this across half a dozen tools that don't talk to each other. PartnerStack was built as a single product, so every vendor, every partner and every integration works like it belongs together. Because it does.AI-NATIVE BY DESIGNPartnerStack AI finds the right partners and starts the right conversations, without the grind. The PartnerStack MCP lets revenue teams ask questions, review performance and take action from the tools they already work in. And as more buyers start their search in an AI answer, PartnerStack's Answer Engine Optimization turns partner-created content into revenue.THE PROOF IS IN THE PARTNERSHIPSAnalyst firm GTM Partners found PartnerStack delivers 33% faster payback than the average PRM. Customers go live in 74 days on average. G2 rates PartnerStack the #1 Partner Ecosystem Platform.THE SOURCE FOR PARTNERSHIPSThe PartnerStack Research Lab publishes original data on how partnerships actually perform. The Partner Playbook and partnerships glossary break down the plays and the jargon. The Partner Skills Marketplace shares practitioner-tested AI workflows, open to everyone, customer or not.PartnerStack is an AppDirect company.

    • Series B
    • 367 employees
    • Founded 2015
  6. 5
    Zensurance· Downtown Toronto (CN Tower / King and Spadina / Railway Lands / Harbourfront West / Bathurst Quay / South Niagara / YTZ), Ontario, Canada

    Founded in 2016, Zensurance.com is an online insurance brokerage and leading source for small business insurance in Canada. Zensurance empowers small business owners, entrepreneurs, independent contractors, and self-employed professionals across hundreds of industries to shop and get the specialized coverage they need in just a few minutes.Through their highly regarded client support team and network of over 50 insurance providers, Zensurance provides customers with industry-leading premium savings of up to 35% off and the confidence to thrive in today’s market.

    • Series B
    • 316 employees
    • Founded 2016

Find engineers at Series B companies in Toronto

Series B companies in Toronto are some of the fastest-moving employers in the market. The list above ranks the largest Series B-stage companies headquartered in Toronto by current headcount, drawn from public LinkedIn and Crunchbase records. With 66 matching companies in Refolk’s index, the density of senior engineers, designers, and founders is unusually high.

At Series B, teams tend to be small, ambitious, and on the hunt for senior talent. The companies on this list are good signals for where the Toronto talent market is heating up - and for which engineers and founders are about to become tomorrow’s operators.

Refolk converts this list into a live search. Ask for “founders of Series B companies in Toronto” or “senior engineers at Series B companies in Toronto hiring” and Refolk returns a ranked shortlist with evidence behind each match.

How this list is built

Refolk pulled Series B companies headquartered in Toronto from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 5 employees. The list refreshes monthly.

Last refreshed: Fri, 16 Oct 2026 19:13:40 GMT

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How is this ranking built?

The list draws on the public company graph - headcount and growth signals, funding history, and recency. The criteria chips at the top show exactly which filters produced it, and the methodology section explains the ranking.

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The underlying index updates continuously and this ranking is rebuilt monthly. Last refreshed: Fri, 16 Oct 2026 19:13:40 GMT. For a list built against the index as it stands today, sign up and run the search live.

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