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I'm Madhav Shankar, a product leader with 11+ years across B2B SaaS, Agentic AI, and Ecommerce, and a two-time founder.

Most recently, I co-founded WisOwl AI, an agentic hiring platform for staffing agencies, and took it from first build to acquisition with zero ad spend. Before that, I spent eight years at CaaStle, where I helped grow a SaaS platform past $50M ARR, used by 100+ brands. Earlier, I co-founded Medzin, a healthcare discovery platform, and grew it to 18,000+ users. I'm open to full-time Senior and Lead PM roles and to fractional product leadership with teams in the US, UK and India. If you're a founder or PM weighing an AI product, go-to-market or career decision, book a call and we'll work through it together.

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Featured in
  • Times of India
  • Indian Express
  • Inc42
  • VC Circle
  • Tribune
  • Business Standard
  • ANI
  • IndianWeb2
  • BW Disrupt
  • Tech in Asia
  • London Tech Week
  • Malayala Manorama
  • Mathrubhumi

What I bring as a product leader

  1. 01 · Built

    Agentic AI & GenAI

    10K+signups · 10+ B2B customers · acquired

    Co-founded WisOwl AI: agents that source, reach out and run voice screens. Zero paid marketing.

    Agentic AI product strategy
  2. 02 · Scaled

    B2B SaaS

    100+brands on CaaStle's platform, 2017–2025

    Launched programs for Ralph Lauren, American Eagle and AllSaints. Led two senior PMs.

    Fractional PM for B2B SaaS
  3. 03 · Grew

    GTM & growth

    ~$50M+ARR subscription business

    +20% incremental revenue from A/B testing and +30% revenue in 90 days. Founder-led GTM twice.

    GTM strategy for B2B SaaS

Two ways to work together

For founders · seed to Series B

Fractional or interim PM

One to three days a week inside your team for a quarter or more, or full-time cover while you hire. I own strategy, roadmap and delivery.

  • Agentic AI and RAG products, from prototype to production
  • GTM, pricing and onboarding for B2B SaaS
  • Subscription funnels, retention and A/B testing

Starts with a 30-min call and a one-page scope.

For hiring managers, recruiters & founders

Full-time product role

Open to Senior and Lead PM roles in AI and B2B SaaS. I worked remotely with a New York team for eight years, so distributed teams are familiar ground.

  • Founder judgment from two startups, one acquired
  • Hands-on with LLMs, RAG, vector search and agent tooling
  • Managed senior PMs on a ~$50M+ ARR platform

Need a resume? Ask on the call or on LinkedIn.

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Experience

  • 2025–26WisOwl AI, co-founder & PM. Agentic hiring platform.Acquired
  • 2017–25CaaStle, PM to Associate Director. ~$50M+ ARR SaaS platform, New York (remote).
  • 2015–17Medzin, co-founder & head of product. Healthtech, $150K seed.
  • 2013–15LimeTray and Vigyan Bharati. SaaS onboarding and digital programs.

Full history on LinkedIn

Writing

Podcast

Side projects

All projects

Questions

Are you open to full-time product roles?

Yes. I'm open to Senior and Lead PM roles in AI and B2B SaaS, as well as fractional and interim work. A 30-minute intro call is the fastest way to check fit.

What does a fractional engagement look like?

One to three days a week inside your team for a quarter or more, owning strategy, roadmap and delivery. Interim full-time cover while you hire, scoped projects and advisory are also options. Compare the options.

Which time zones do you work with?

I'm based in Delhi and spent eight years working remotely with a New York company. US East Coast teams get a reliable morning overlap, UK and European teams overlap most of the day, and Indian teams get me in their time zone and in person in Delhi NCR.

What happens after the first call?

For fractional work, a one-page scope with outcome, cadence, duration and price. For a full-time role, whatever your process needs next. If I'm not the right person, I'll say so on the call and point you somewhere better.

Let's talk.

Building with agents, fixing a SaaS funnel, or hiring a product lead? Thirty minutes is usually enough to know if I can help.

How the call works

  1. Pick a 30-minute slot that suits your time zone.
  2. Tell me what you're building or hiring for. No deck needed.
  3. Leave with a clear next step, even if that step isn't me.