Web Design for SaaS That Works
We’re Flux Design B.V., a design studio in the Netherlands specializing in web design for SaaS platforms and tech startups. We build interfaces that users actually want to use.
Started Because We Saw a Problem
Back in 2019, we watched startup after startup launch beautiful websites that looked good in pitch decks but fell apart once real users showed up. Founders were confused. Product teams didn’t understand design. Developers were frustrated. So we decided to do something different.
Flux Design B.V. started with one core belief: great SaaS design isn’t about aesthetics. It’s about understanding how your software actually gets used. We’ve spent the last four years diving deep into startup UX, learning what makes interfaces intuitive for engineers, what builds trust with enterprise buyers, and how design directly impacts adoption rates.
Today, we’re not just a design agency. We’re partners who understand the pressure startups face. We’ve helped founders raise funding, launch products, and scale their teams. And honestly? We’ve learned as much from our clients as they’ve learned from us.
How We Build SaaS Interfaces
We don’t start with design. We start with understanding your users and your business model. Then we build interfaces that work.
Research Your Market
We dig into who actually uses your software. Not personas from a spreadsheet — real conversations with your target users, your competitors’ frustrations, and the gaps in the market you’re filling.
Design for Adoption
Your interface isn’t just functional. It needs to reduce friction at every step. We design onboarding flows that don’t feel like tutorials, features that are discoverable, and workflows that make sense to your users.
Build for Scale
From design systems to responsive interfaces, we build with your growth in mind. Your interface shouldn’t break when you add features. It should get smarter.
Test & Iterate
We don’t just hand you designs and disappear. We validate with users, gather feedback, and iterate. Your product changes, so your design evolves too.
Specialized in Startup UX
We focus on what startups actually need: interfaces that convert users, onboarding that works, and design systems that scale with your team.
Product Design
Complete UX/UI design for new products and features. We’re hands-on from wireframes through final implementation, working closely with your engineering team.
Design Systems
We build reusable component libraries and design systems that make your team faster. One source of truth for design and development.
User Research
We validate assumptions with real users. Interviews, usability testing, analytics review — we help you understand what’s actually working.
Software Interfaces
Enterprise tools, internal platforms, B2B software. We specialize in interfaces built for power users and complex workflows.
UX Audits
Your product isn’t converting? We audit your interface, identify friction points, and recommend concrete improvements.
Interaction Design
Micro-interactions that delight. Animations that guide. We sweat the details that make software feel polished and responsive.
Design Isn’t About Pretty Pixels
We’ve worked with enough startups to know that great design doesn’t mean lots of gradients or trendy animations. It means clarity. It means your interface tells a story that makes sense. It means new users can find what they need without help.
Every button we design, every flow we map, every interaction we build — it’s there for a reason. We don’t believe in decoration that doesn’t serve a purpose. We believe in design that reduces cognitive load, builds confidence, and makes your software actually fun to use.
“The difference between working with Flux Design B.V. and other agencies? They actually understand startups. They’re not just making things look nice — they’re thinking about how design impacts user adoption and retention. That’s what we needed.”
— Founder, B2B SaaS Platform
Important Information
The information presented on this website is intended for educational and informational purposes about SaaS design, user experience, and web design for technology startups. While we draw on our experience working with startups and software platforms, individual project outcomes depend on many factors including market conditions, execution, product-market fit, and broader business strategy. We encourage all founders and product teams to conduct thorough research and consult with industry experts and mentors before making significant product or design decisions. Success in SaaS is determined by multiple factors beyond design alone, and we position our work as one important component of your overall strategy.