William Lovely (Sulinski)

William Lovely (Sulinski)

Y Combinator Logo Batch: S18

Achievements

  • Founded and sold AccelGolf in 2008
  • Co-founded Pistol Lake, served as CEO and Chairman until 2018
  • VP of Product at Shareaholic in 2011-2012
  • Founded Federacy, a bug bounty platform, and serves as CEO since 2018
  • Participated in Y Combinator with Federacy in 2018
  • Currently Chief Product Officer at Underdog Fantasy

Shoutout to William Lovely (Sulinski)

Allow me to introduce you to the phenomenon that is William Lovely, aka Sulinski, this guy’s the real deal in the startup world. He’s a legit serial entrepreneur who’s been crushing it for over a decade. No fluff.

Started back in 2008 with AccelGolf, he co-founded it, was CEO, and sold it like a boss. That’s where he first proved he’s got the hustle. Then, around 2011-2012, he jumped into Shareaholic as VP of Product, which gave him some serious product chops. After that, he co-founded Pistol Lake in 2012, where he was CEO and Chairman till 2018. That’s like a solid run building a brand in the apparel space, showing he’s got the stamina to grow something from scratch.

But here’s where it gets even more interesting: in 2018, he jumped into Y Combinator with Federacy, a bug bounty platform for startups based in SF. He’s now the CEO there, basically leading a new wave of security-focused tools for the startup system. That move into YC isn’t just a badge, it’s a sign he’s always chasing the future trend, always pushing boundaries. He’s got that mix of hands-on founder grit and a knack for spotting future trends.

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Now, he’s deep into the sports tech scene, holding top roles at Underdog Fantasy, currently Chief Product Officer, previously Chief of Staff. He’s not just about startups; he’s actively shaping the future of online sports and gaming with moves that truly matter.

His educational background? A degree in Financial Economics from the University of Maine. Nothing fancy on paper, but more than enough to understand markets and money, which clearly helps him guide the startup grind.

From his process, what jumps out? He’s a guy who’s always been about building, selling, and then jumping into new problems. His whole vibe screams: “I love to create, see it succeed, then do it again.” He’s not just in it for a quick win, he’s got that entrepreneurial fire, the kind that makes you want to follow what he’s doing. His experience isn’t just about starting companies; it’s about pushing them to be the best, then moving on to the future trend. That’s the mindset of someone who’s in this game for the long haul and genuinely wants to shake things up.

In short? William Lovely is a serial builder, a guy who’s been in the trenches, crushed it multiple times, and keeps chasing the next frontier. He’s the kind of founder who shows what it really means to be relentless, always learning, always pushing, never settling. No Cap.

Founder ID: 106090

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