Sesame Summit 2026 – application open

US Expansion Isn’t Dead — and 5 Insights to Help European Startups Cross the Atlantic

Reports of the death of transatlantic business have been greatly exaggerated. Despite political tensions and tariffs, European startups will keep crossing the Atlantic — and so will their U.S. counterparts.

This makes the latest book published by global VC firm Index Ventures especially timely. ‘Winning in the US: The Founder’s Guide to Building a Global Company from Europe’ is a fully revised edition that draws on Index’s high-profile portfolio to explore how European startups can approach U.S. expansion as a pathway to global success.

One key lesson from the book is that there is no one-size-fits-all approach. But it is much more than a collection of anecdotes; the varied strategies adopted by scaleups such as ElevenLabs, Pigment and Wiz are analyzed and broken down into paths founders can choose depending on their business model and priorities.

As Sesamers prepares to bring a whole cohort of European startups to SXSW 2026, this is a topic close to our hearts. If U.S. expansion is part of your plans, the whole book is well worth reading. But to get you started, we have rounded up five key insights to guide your strategy.

Consider early US expansion

The most topical takeaway of this refreshed edition is that 64% of European startups are now expanding to the U.S. at pre-seed or seed stage, compared to 33% five years ago. That may seem counterintuitive, but it actually ties into several trends we are well aware of, including the normalization of distributed teams after the pandemic.

Expanding into the U.S. early on can pay off big time, and doesn’t always require a huge initial spend. Index-backed unicorn Collibra is one such example: It ventured into the U.S. as early as 2012, but only by sponsoring conferences and sending over team members to attend. Even when it secured its first clients there, it serviced them remotely. Yet, the U.S. now drives more than half of its revenue. 

Conferences also played a role in the expansion strategy of Cradle, an AI-enabled biotech startup founded in 2021. With a lab in Amsterdam and an engineering team in Zurich, the company also pursued U.S. customers from the beginning, with its founders attending events there to meet potential buyers in person.

As Index found out, expanding into the U.S. didn’t just drive more business for Cradle; it acted as a booster. “Adoption of innovative technology in Europe takes a lot longer, so you can get started with companies in the U.S. way faster,” CEO Stef van Grieken said in the book. According to the company, the U.S. and Europe now both represent 40% of its customer base.

You need a versatile landing team

As defined in the book, “a landing team is a small group of employees sent from a company’s HQ to a new market or region to initiate and manage the expansion process.” These people are not just there to sell your products and services; they will also set the tone for your future operations, transmitting values, processes and product understanding.

With this in mind, Revolut partner James Gibson has a key recommendation: “bring talent from existing offices rather than trying to hire fresh.” He also put a number on that goal: have at least 30% of people from an existing office, with the reasoning that they “need to understand how finance works, who is in ops, how things are run in the other offices.” 

That’s also why Index partner Nina Achadjian recommends prioritizing versatility over specialization. “You need team members who are willing to operate outside their comfort zones—people who can pitch to customers one day and troubleshoot product issues the next. The most successful landing teams blend deep product knowledge with cultural adaptability and entrepreneurial initiative,” she said.

According to the book’s findings, your landing team should include a mix of senior and junior/mid-level profiles, but its composition will depend on your business. For instance, the authors note, “If you already have a number of strategically important US clients and a land-and-expand GTM model, customer success roles will be important.” 

You may not have to relocate

You may have noticed that the above didn’t mention CEOs, only some senior profiles — and that’s no omission. Quite a few startups find success in the U.S. without having their founding team move there; but it does take some intentionality.

Says Snyk and Tessl co-founder Guy Podjarny: “If you’re not going to have a founder in one of the locations, then you need a leader in that location, and that leader should be more than just a head of function. They should be a true executive that you involve in decisions that are company-wide.”


Going back to the versatility point, these profiles don’t have to be solely commercial. As Index highlighted, “an interesting pattern emerging from B2B companies such as Snyk and ElevenLabs is choosing highly technical first hires who end up taking on commercial roles.” 

In-person time matters

You may not have to relocate, but you will likely have to travel some, and so will your team. One point that ‘Winning in the US’ insists on is that holding regular global team offsites can significantly improve alignment. 

Their recommendation is to do it at least once a year for the entire team, and even more often for distributed functions — they are worth the time and cost. Per Index: “The more distributed the team, the more frequent these offsites should be.”

Offsites aside, there will be frequent business travel, which your company needs to facilitate — with budget, but also with policies that encourage team members to get to know each other across different offices. “Our travel policy is simple: if you wouldn’t blush to justify it, it’s OK,” Adyen Co-CEO Ingo Uytdehaage said.

Conversely, you will need rules to make this level of travel sustainable — this is a marathon, not a sprint. Podjarny developed his own criteria, which could work for other founders with families at home: 

  • No trips in successive weeks
;
  • No weekend travel
;
  • Always home for breakfast and dinner with his children when not traveling
;
  • Taking vacations, including at least one two-week trip
;
  • Schedule regular date nights.

Learn from conferences

Despite requiring time away from home, conferences are a key component of international expansion. Miro founder and CEO Andrey Khusid told Index that attending conferences in the U.S. allowed him to meet high-profile speaker and expert Elena Verna. Following their meeting, she advised the team on growth and eventually became Miro’s interim head of marketing before joining Swedish unicorn Lovable as head of growth earlier this year.

As Index noted, the impact of Khusid’s efforts was amplified by the work he did before, during and after his trips — which is also in line with our founders’ guide to event strategy. Here are key things he did and that you can do too:

  • Use LinkedIn to ask your network for introductions before your trip, and then ask new people you meet for further introductions. 
  • During events, find speakers who resonated with you the most, spend time with them after their talks and email them with follow-ups.

At Sesamers, we believe in the power of crossing borders and building bridges. As we gear up for SXSW 2026, we’re energized by how game‑changing the right events can be — sparking the connections, conversations and opportunities that turn transatlantic ambitions into reality.

Contact us to learn more about the opportunity to showcase your startup at SXSW 2026. We’ll also share more info as the date gets closer.

you might also like

Event strategy for VC

When I started working in VC, conferences were treated as a nice extra. Something you sprinkled on top of a sourcing strategy that lived elsewhere, often in a partner’s address book. Being an investor meant you mainly had to spend a few days out of the office per week for dealflow meetings, you attended the occasional panel slot if you had a friend on the programme team, shared a few tweets and that was it. But today conferences are part of the core marketing infrastructure that keeps the firm in the flow of founders, operators, LPs and peers. These events act as a pretext to re-engage with warm or cold leads, whether a fund is at the beginning of their investment cycle or deep in fundraising for their next flagship fund.  Every tech city has its own flagship event. If you are a generalist VC, chances are you can easily identify 20 conferences that you are expected to show up at, and 40 that you could attend.  So, where do you start? How do you really decide whether it’s a good reason to attend? Most investors only see the tip of the iceberg: the logo of the headline conference. They rarely see the resource constraints that come with executing the field work. That tension creates too familiar operational dramas for marketing teams, including last-minute “Where is my ticket?” message, partner demands for main-stage slots, and the flurry of FOMO driven interest because another prestigious fund has been announced as a partner. And yet, despite common belief, investors don’t attend conferences for the parties.  When I look at the 100 plus conferences I have attended over my career, I tend to group the real reasons into 10 buckets. 1. Qualified dealflow Good conferences act as magnets. They pull in the startups that are relevant for a specific thesis, geography or stage. For generalist VCs, niche events are a way to see a concentrated sample of the market in two days. For more specialist firms, these events are a way to go deeper into a vertical, and to be visible in that niche. 2. On-the-shelf networking Conferences provide “on the shelf networking”: the infrastructure of meetings, lounges, apps and social events is already built. You simply step into it. For investors, that is valuable across several fronts: they can connect with  founders and future founders, operators for senior hires, practical experts and   LPs exploring new funds.  3. LPs and the (secret) permanent fundraise Most funds are always fundraising. Events that attract LPs are therefore particularly attractive. Even a handful of good LP conversations can justify several days out of the office, especially if this involves underground Berlin (Super Return) or a roundtrip to the French Riviera (IPEM).  4. Media relationships Some partners only have meaningful conversations with journalists at conferences, mainly because engaging with the media is not part of their day-to-day routine. For them, conferences provide an efficient way to concentrate press engagement in one place without having to pitch themselves. For marketers handling complex logistics across several markets, an event is often the one moment where the stars align. 5. Thesis signalling Good investors have local-based theses and want to attract dealflow consistently across several years, whether or not they have cash to invest. Attending Stockholm-based conferences is a way to say, “we are serious about the Nordics” without having to buy billboards in the airport (although some folks do exactly that). In that sense, VCs and event organizers are sometimes competing as community enablers. Both are trying to become the natural node for a given ecosystem. 6. Speaking and thought leadership Speaking slots are a form of social currency in venture – and comes with a few perks such as “speaker dinners”. Many partners enjoy being on stage and the status premium associated with it. I guess there’s a reason why some people are more interested in how they will look like on their Slush stage picture than what they are going to say. Beyond ego, speaking opportunities give VCs a platform to articulate their thesis, test a narrative in front of a live audience, and attract founders at the very top of the funnel. Some of the best inbound I have seen has come within a week of a talk. A founder who heard a line and followed up. A journalist who spotted a quote for a later story. Someone who waited backstage with a pitch. This is part of why VCs can be VERY intense about speaking slots. From their perspective, stage time is not simply a visibility perk. It is a key input into the marketing engine. 7. Curation Some conferences have a strong reputation for curation. You trust that if you turn up at TEDx, DLD, or similar events, you will be challenged and inspired. For investors who spend most of their year buried in spreadsheets, this is attractive. Alas, I think the content quality has nosedived these last couple of years so it’s less true. 8. Portfolio support Serious investors use conferences to help portfolio companies with commercial introductions, support them on talent hunting, offer stage visibility and access to LPs, journalists, and peers. When a portfolio company is having a big moment, everything else tends to rearrange around it.  9. IRL experiences Many VC franchises have grown used to operating digitally. What is often missing is a reliable in person interface for the broader community around the fund. Conferences solve this by using those moments to crystallise the community you are building.  A simple breakfast, an LP catching up with several of your founders in one afternoon: these are small touches, but repeated over ten years they are part of how trust compounds.  10. Watching to competition Conferences are one of the few places where you can literally see how competitors behave with founders, with LPs, with the media and with each other. Who is always surrounded by founders. Who is quietly building a niche. Who is sponsoring heavily in a

Rift raises €4.6M for aerial reconnaissance platform
Fundraising 4 months ago

Europe’s defence technology sector is witnessing unprecedented investment momentum, driven by shifting geopolitical realities and increasing demand for autonomous surveillance solutions. At the forefront of this transformation sits Rift, a Paris-based startup that has just secured €4.6 million in Series A funding to build Europe’s first on-demand aerial reconnaissance network. The round was led by AlleyCorp, the New York-based venture firm known for backing enterprise technology companies. This investment signals growing transatlantic interest in European defence tech capabilities, particularly as NATO allies prioritise technological sovereignty and autonomous reconnaissance systems. AlleyCorp leads aerial reconnaissance funding round AlleyCorp’s decision to lead this round reflects a broader strategic shift among US investors towards European defence technology startups. The firm, which has previously backed companies like MongoDB and Paperless Post, sees significant potential in Rift’s approach to democratising aerial intelligence gathering across civilian and military applications. “Rift’s technology addresses a critical gap in the European surveillance market,” noted a spokesperson from AlleyCorp. “Their ability to deploy on-demand reconnaissance missions using autonomous systems represents exactly the kind of dual-use innovation we expect to define the next decade of defence technology.” The investment comes at a time when European governments are accelerating defence technology procurement, with the EU’s European Defence Fund allocating €8 billion for collaborative defence research and development programmes. This regulatory tailwind positions Rift advantageously within a market expected to reach €24 billion by 2027. Building Europe’s autonomous surveillance network Rift’s platform combines advanced drone technology with artificial intelligence to provide real-time reconnaissance capabilities across multiple sectors. Unlike traditional surveillance methods that require significant infrastructure investment, the company’s on-demand model enables clients to access aerial intelligence through a software-as-a-service platform. The startup plans to use the funding to expand its autonomous fleet and enhance its AI-powered analytics capabilities. With operations currently focused on France and Germany, Rift aims to establish coverage across major European markets by 2026, positioning itself as the continent’s primary alternative to US-based surveillance providers. “European organisations need surveillance solutions that comply with GDPR and other regional privacy regulations,” explained Rift’s CEO. “Our platform is built from the ground up with European data sovereignty in mind, something that resonates strongly with both government and enterprise clients.” This funding positions Rift to compete directly with established players like Palantir and Anduril, whilst offering European clients the regulatory compliance and data localisation they increasingly demand. As defence technology becomes increasingly intertwined with civilian applications, Rift’s European-first approach may prove to be its strongest competitive advantage.

energy infrastructure funding, grid technology investment, BESS funding
Fundraising 4 months ago

Europe’s energy infrastructure is undergoing its most significant transformation since electrification began. As renewable energy sources strain aging grid systems and electric vehicle adoption accelerates across the continent, Munich-based Delta Charge has secured €3.7 million to address critical gaps in energy storage and distribution. The funding round, led by Vireo Ventures and Rethink Ventures, positions the startup to capitalise on Europe’s urgent need for battery energy storage systems (BESS) and grid modernisation solutions. This investment reflects growing European investor confidence in energy infrastructure startups as the EU accelerates its transition to renewable energy sources. With the European Green Deal mandating carbon neutrality by 2050, the timing couldn’t be more strategic for Delta Charge’s market entry. Energy infrastructure funding attracts European climate tech investors Vireo Ventures and Rethink Ventures bring complementary expertise to Delta Charge’s growth trajectory. Vireo Ventures, known for backing transformative European climate technologies, sees Delta Charge as addressing fundamental infrastructure challenges that traditional utilities struggle to solve efficiently. Meanwhile, Rethink Ventures’ portfolio focus on sustainable technology solutions aligns perfectly with the startup’s mission to optimise energy distribution networks. “We’re witnessing unprecedented strain on European energy grids as demand patterns shift dramatically,” explains a Vireo Ventures partner familiar with the investment decision. “Delta Charge’s approach to battery energy storage systems offers the scalability and intelligence that Europe needs to maintain grid stability while integrating renewable sources.” The investor combination signals strong European institutional support for energy infrastructure innovation. Both funds have demonstrated expertise in scaling climate tech companies across fragmented European markets, providing Delta Charge with strategic value beyond capital injection. BESS technology targets European grid modernisation Delta Charge’s battery energy storage systems address acute European challenges that differ significantly from other global markets. The continent’s diverse regulatory frameworks, varying grid infrastructures, and ambitious renewable targets create unique technical requirements. The company’s technology optimises energy storage placement and management across these complex, interconnected networks. The €3.7 million funding will accelerate product development specifically for European market conditions and support expansion across key markets including Germany, France, and the Netherlands. Delta Charge plans to leverage regulatory tailwinds from the EU’s REPowerEU initiative, which prioritises energy independence and grid resilience investments. “European energy markets present both immense opportunity and distinct challenges,” notes Delta Charge’s leadership team. “Our BESS solutions are designed specifically for the regulatory complexity and infrastructure diversity that characterises European energy systems.” The startup’s technology addresses critical pain points including grid balancing during peak renewable generation periods and energy storage optimisation for commercial and industrial applications. With European electricity prices remaining volatile and grid stability concerns mounting, Delta Charge’s timing appears particularly astute. This funding round exemplifies the European venture capital community’s increasing focus on infrastructure-critical climate technologies. As European governments commit billions to energy transition initiatives, startups like Delta Charge are positioned to capture significant market opportunities whilst addressing urgent societal needs.

Subscribe to
our Newsletter!

Stay at the forefront with our curated guide to the best upcoming Tech events.