Modern websites
Showcase sites, portfolios, platforms — fast, responsive and SEO-optimized. A design that looks like you and turns visitors into clients.
- 100% custom design
- Performance & SEO
- Easy-to-manage CMS
Digital agency · Based in Switzerland 🇨🇭 · Clients worldwide
We design websites and custom apps that make a difference.
SEFF Studio turns your ideas into fast, elegant digital products built to convert. From the first pixel to launch — and beyond.
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01 — Services
Everything you need
to exist online.
Our specialty
Custom apps
Web and mobile applications built around your business. Internal tools, SaaS platforms, dashboards — we develop exactly what you need.
- Web, iOS & Android
- Scalable architecture
- Integrations & APIs
E-commerce
Online stores that actually sell. Smooth checkout, secure payments (Twint, Stripe, PayPal…), stock management and integrated logistics.
- Optimized checkout funnel
- International payments
- Multi-language & multi-currency
Branding & Design
Visual identity, logo, brand guidelines, UX/UI design. A consistent, memorable brand image — from print to digital.
- Brand identity
- Design systems
- Interactive prototypes
SEO & Growth
Being online is good. Being found is better. Organic search, performance, analytics and content strategy to boost your visibility.
- SEO audit & optimization
- Core Web Vitals
- Tracking & reporting
Maintenance & Support
We don't disappear after launch. Hosting, updates, security, new features: your product stays fast, safe and up to date.
- Swiss hosting 🇨🇭
- Backups & security
- Continuous improvements
03 — Process
Simple, transparent,
efficient.
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01
Discovery
We listen, ask questions and get to know your business and goals. The first call is free, with no strings attached.
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02
Design
Mockups and interactive prototypes. You see and approve exactly what your product will look like before a single line of code.
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03
Development
Clean code, modern technologies, regular progress updates. You follow the project in real time — no surprises.
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04
Launch & beyond
Go-live, training, then long-term support. Your product keeps growing with your business.
04 — The studio
Swiss precision,
global reach.
SEFF Studio is based in Bussigny, Switzerland, and you can tell by the way we work: rigor, reliability, obsessive attention to detail. But our clients are everywhere — startups, SMEs, freelancers and established brands, from Geneva to Dubai, Paris to New York.
Small team, high standards: every project is handled end to end by the people who actually build it. No middlemen, no opaque outsourcing — just work done right, delivered on time.
🇨🇭 Swiss qualityRigor, punctuality, data hosted in Switzerland on request.
🌍 100% remote-friendlyVideo calls, online tracking, continuous delivery — wherever you are.
⚡ Truly responsiveReplies within 24h, one direct and dedicated contact.
🔒 ConfidentialityNDA on request. Your ideas and your data stay yours.
05 — They trust us
What our
clients say.
“A team that understands fast, proposes better than what we had imagined, and delivers on time. Our app is exactly the tool we needed.”
“The website is beautiful, blazing fast, and our quote requests doubled in three months. The post-launch support makes all the difference.”
“Flawless remote collaboration: clear communication, regular demos, zero bad surprises. We're coming back for the V2.”
06 — Contact
Got a project in mind?
Let's build it.
Tell us about your idea in a few lines. We'll get back to you within 24h with a first honest take — free and with no strings attached.
✉ info@seffstudio.com
📞 +41 78 335 69 95
📍 Bussigny, Switzerland · Available worldwide
🕑 Reply within 24 business hours