Today, we sit down with Dennis Wiemer from Offorte, who has kindly given us insight into his SaaS startup, how it was born and some of his major successes.

When Dennis Wiemer first sat staring at yet another Word document in 2010, he was running Dvotion, a boutique digital agency in the Netherlands. What frustrated him wasn’t the creative work, it was the hours wasted copying, pasting, and reformatting proposals that ultimately landed in a static PDF.

“Offorte was born out of frustration and a drive to do things better,” he recalls.

The internal tool he hacked together to solve that annoyance snowballed; by 2015, he sold the agency and went all-in on Offorte, intent on reimagining proposals as interactive, data-driven experiences rather than glorified invoices.

“So, like many founders do, we scratched our own itch… I wanted proposals that actually sold the idea. That looked great. That told a story. And that made clients excited to say yes.”

Today, the platform is trusted by 2,500-plus professionals worldwide, operating independently from its base in Breda, Netherlands.

Solving the Last Mile of Sales Documents

Back in 2010, digital proposal software was virtually non-existent; companies were tethered to Word or PDF.

Dennis sensed a gap: “There was a clear opportunity to do better interactive, branded proposals that actually helped close deals.”

By refusing to chase broader “all-in-one” trends, Offorte remained laser-focused on proposals, layering in design freedom, analytics and, most recently, an AI writing assistant that speeds up page creation without sacrificing the human voice.

That single-mindedness shows up in retention: Offorte’s customers tend to stick around. While many SaaS platforms battle high churn rates, Offorte’s focus on user experience, steady improvements, and proposal-centric workflows has cultivated long-term loyalty.

Sweating the Small Details

While many startups trumpet growth hacks, Dennis credits relentless user observation:

“Sweating the details of how users actually use the platform… has had impact. That steady, user-driven refinement has been a driver of growth.”

The team watches micro-friction, then ships quiet fixes that compound into loyalty:

“Watching behavior, spotting friction, and acting quickly on feedback, often in small, unsexy ways, has had an impact.”

Riding and Redefining a Booming Market

Offorte’s success isn’t happening in a vacuum. The proposal-management software market itself is on a tear, projected to grow from $2.59 billion in 2024 to $2.91 billion in 2025 a 12.3% CAGR (Compound Annual Growth Rate).

Yet many competitors have opted to “go broad,” bundling proposals inside sprawling sales suites.

Offorte’s contrarian bet is that depth beats breadth: if it continues to make the act of crafting, sending and tracking a proposal frictionless, it wins.

The AI Frontier and Existential Questions

Ironically, the very technology powering Offorte’s next chapter is also its greatest unknown.

“The biggest challenge right now is navigating the opportunities and uncertainties AI brings.”

Dennis admits. If autonomous AI agents one day negotiate deals end-to-end, will “proposals” as we know them survive? His long-term vision is to evolve Offorte from a proposal tool into a smart, integrated node within a broader sales automation ecosystem, capable of feeding or receiving data from automations, AI agents, or even smart contracts. It’s early, but you can already see the groundwork: writing assistants, automated flows via Zapier, MCP support and a product designed to work with both humans and machines.

Hard-Won Lesson: Product ≠ Traction

For founders, Dennis offers one blunt takeaway:

“Building a great product isn’t enough… Marketing is just as essential as the product.”

In Offorte’s early days, he assumed word-of-mouth would suffice; it didn’t. Only after he systematized content, SEO and partner channels did the user curve bend upward. That humility, acknowledging that brilliant code must still meet disciplined go-to-market execution, may be the most transferable lesson for readers plotting their own SaaS climb.

Final Word

Dennis Wiemer’s story underscores a timeless startup truth: focus, craft and customer intimacy are defensible moats even in a $3-billion market racing forward at double-digit CAGR. Obsessing over a single workflow and keeping churn tiny, better than competitors and industry averages, Offorte proves that sometimes the most powerful SaaS companies are forged not in the hunt for the next shiny trend, but in the persistent polish of a once-boring, now-mission-critical document.

To explore the product or follow Dennis, visit Offorte or connect with him on LinkedIn.