What founders say about teaming up with us

Jean is the kind of advisor founders wish they had on their side. He brings a rare blend of humility, positivity, and sharp intelligence, coupled with a deep technical expertise. This expertise gives him an intuitive grasp of the needs addressed by tech for tech products. IrregEx embodies these qualities, along with an outstanding network of technical executives that can brainstorm and open doors when it matters most. This combination is invaluable for early-stage and accelerating startups, and it's why I knew I needed Jean on board—not just for my company, but also for me as a founder.

Jean is the perfect example of an investor who brings more than just a check. We were originally excited for the depth of his experience in developer tooling, but today, I go to him for much more than technical strategy. Jean is one of my first calls whenever things get weird. One day he's helping me analyze why an enterprise deal fell through, the next he's helping me manage talent challenges. His versatility and openness makes him a valuable investor and advisor.

Jean has been an incredible resource and advisor to us as founders. He has been essential in helping us determine market fit, fundraising, and sales strategy. We are a better company because of his guidance and support.

Working with Jean at Irregular Expressions has been great for Plural. His deep technical and product expertise quickly stood out, and he wasted no time rolling up his sleeves to help us on multiple fronts, whether discussing product or go-to-market. During our fundraising, he ran due diligence swiftly, and his introductions to potential customers have already opened doors for us. Jean’s ‘can-do’ attitude, combined with the fund's network of technical leaders, makes him an invaluable partner: he’s the kind of investor early-stage founders need.

Jean has been a great partner throughout the years. He has a rare mix of deep technical and business sense. He has well honed intuitions, and brings an analytical mindset to his work. As a thought partner, he contributes other perspectives and is never afraid to challenge, but does so in a way that demonstrates respect, curiosity, and humility. He's been an incredible partner, and his support has been invaluable in our journey.

Working with IrregEx has been excellent. Jean is deeply knowledgable about highly technical products, and he has been very helpful and responsive. I highly recommend Jean and the firm overall.

What I admire about Jean is the "get things moving and done" mindset. Recognizing connections and actively helping is rarely seen among investors (from my perspective). Jean is one of the most technical and helpful investors I've interacted with.

Jean and team are great to work with for founders looking to add a smart, helpful investor to your startup. They committed early to our seed round, before we had a lead, and leaned in to support the process until we were 3x oversubscribed. They jump in to support where they can help and let you work when support isn't needed. They are good people doing good work in an industry that often has neither. I look forward to sharing the journey with them for many years to come.

Jean is the investor that all infrastructure software startups, like Qovery, hope to attract. He possesses deep knowledge of the cloud infrastructure space and is exceptionally well-connected. He also understands the challenges faced by European founders entering the US market. His strategic insights and unwavering support laid the foundation for our successful expansion into NYC, where we are now scaling our business at an incredible pace. Jean's exceptional relationships with top-tier VCs on the East and West Coasts were instrumental in securing our Series A funding. His guidance has been invaluable, and I’m deeply grateful for the opportunities he has helped unlock for Qovery.

Jean is the rare breed of investor who really deeply seeks to understand founders’ businesses in addition to supporting them. He’s thoughtful, dedicated, and decisive, and has fought to support us through both ups and downs. He's one of the rare investors who I genuinely look forward to strategizing with and always has incisive, actionable insight to share. As a supporter he’s not just smart but also proactive — constantly helping with intros, tech reviews, and more. Can’t say enough good things about Jean.

Jean was one of the earliest believers in our vision—he backed us in our Seed round and doubled down a year later during our extension, not because he had to, but because he genuinely believed in what we were building and wanted to support us further. Jean brings a rare mix of deep technical expertise and strategic clarity. He's always willing to jump into the weeds and brainstorm alongside us. Some of our pivotal product conversations have started with a casual check-in from Jean. He’s a thoughtful, generous partner and exactly the kind of investor you hope to have in your corner when building something ambitious.

​IrregEx is a very unique group! I intentionally avoided saying "VC firm" because it… didn't feel like one, in a good sense? Jean has done an impossible challenge of getting many eng leaders together (who are already busy building their own stuff) and beam their collective knowledge, network and a bit of wealth onto emerging tech startups. He was one of the most involved investors we worked with (starting with the fundraising interaction), and it didn't feel like a "let me add value™️" interaction :) When devtools founders ask me for intros to investors, Jean is a no-brainer intro for me. I wish we had a longer run with IrregEx before our exit but I hope I will get another opportunity to work with Jean and his team!

Jean is an exceptional investor and an even better person. Throughout our journey, he has been a steadfast supporter, standing by us during the toughest challenges and consistently offering valuable insights. Jean combines intelligence, practicality, and a truly founder-friendly approach that makes him a standout among investors. Having worked with over 30 investors, I can confidently say Jean is among the very best. His unwavering belief in us and our vision has been both motivating and instrumental to our progress. If you're lucky enough to have Jean on your team, you're in excellent hands.

Jean has been incredibly supportive from day one. He gets the technical stuff and always has smart insights ​o​n what's going on in the industry.​ He's been extremely helpful in making connections. If I started another company, I would ask Jean to invest again.

Working with Jean has been an incredible experience. His unique technical background has been invaluable for us at Play, especially as we’ve been building a highly technical tool tailored for designers and developers. Jean has consistently offered thoughtful insights that have helped us refine not just our product but also how we position it in the market. Beyond that, I’ve appreciated having him as a sounding board for ongoing conversations about our GTM strategy and how best to communicate our value to our audience. He is always approachable and insightful, which has made collaborating with him such a rewarding experience.

Jean has been transformational in Escape’s journey, particularly with our expansion to the US market. Not only does he bring a ton of relevant intros, give direct feedback, and provide extra sharp fundraising advice, his genuine dedication to making founders succeed is a true catalyst for the success of his portfolio companies. If I were to start a company again, I’d 100% have Jean onboard.

Working with Jean has been a fantastic experience from start to finish. Throughout our fundraising process, Jean demonstrated genuine curiosity in our product and market, asked insightful questions, and moved swiftly—making it easy to want to partner with him. He consistently checked in with us, respected our time, and offered valuable support whenever needed. Beyond that, Jean’s network of top-tier operators and senior engineering leaders is top notch. If we decide to raise another round in the future, we’d make additional effort to secure Jean has an allocationif he’s interested.

Jean is extremely deliberate in his approach, guidance, and feedback ranging from engineering expertise, GTM, and fundraising. Pairing with Jean on a regular basis has helped us smooth out the inevitable ups and downs of an early stage company. Jean begins most conversations with a simple, genuine "how are you?" -- this is immensely valuable as a founder.

A fantastic investor, Jean has always been on my side. Even when times got tough and things seemed uncertain in the early days. I will always remember those days and will reward Jean generously.

If I had one thing to say about Jean, it would be that everything that he does is purposeful and meaningful! Few investors put as much time and effort into understanding our technology, our business model and our challenges; but once Jean decided to make the jump, he was all in and has been one of the most precious allies to Alectio and to me so far. If I need an introduction, he will just make it happen. Jean is one of those people you feel better having by your side, who are there when you need them - whether it's because you need strategic advice, or just because you need a listening ear.

Jean and Irregular Expressions have been great partners and investors for User Interviews. Even before we were fundraising, Jean was able to give helpful intros and advice on scaling. His experience as an operator allowed him to understand and get up to speed on the market incredibly quickly. Once we began to fundraise they moved fast and had a very smooth, founder friendly process. Everyone in Irregular Expressions is a successful operator, so the questions and conversations felt more like a mentor session than a pitch. Post-investment everyone has been available and engaged whenever I had a request. I’ve done working sessions on GTM strategy and product philosophy with people from Irregular Expressions network. I also have very helpful quarterly meetings with Jean to go over the business. I’m very grateful I’ve had the opportunity to work with Irregular Expressions and look forward to scaling User Interviews with them as partners.

I found Jean to be very thoughtful and structured in the way that he approached his investment decision. He takes the time to make sure that he understands the nuance of your business and to offer valuable perspectives drawn from his past experiences. He is very much a “System 2” thinker, which I greatly appreciate. Post-investment, he has been very proactive in finding ways to support our initiatives -- from making valuable intros to meeting with candidates on our behalf. He's been a great partner to Atomic.

Jean was incredibly helpful brokering introductions and investments from stellar engineering experts who could be force multipliers to our business. These experts have been tremendously helpful in my recruiting process as I grow my company post Seed investments. Jean has also made himself available post-investment for any help needed. It's been a great relationship to us and would recommend to founders with a strong focus on capital that is strategic.

Jean found us in advance of our seed round and saw the potential in our deeply technical product and got in early. Since then he's followed on both literally and figuratively as an investor, advisor, connector, and friend. From personal experience he's one of the rare gems in VC that will be with you through thick and thin.

Jean is one of the best technology leaders out there, hands down. I'm very lucky to have him as my investor and mentor.

Jean was one of the first investors we ever pitched and shared the vision for Canva with, back in 2012 when he was on a trip to our home town in Perth, Western Australia. Jean was incredibly supportive back then, and his support has continued over many years - letting us crash at his apartment for *months* as we pitched for our first round of funding, he listened to our unpolished pitch many times, he introduced us to great people in his network, gave great advice and lent a friendly ear too many times to count. We're really lucky to have met Jean along our path.