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Fiverr Pro
English
$
USD
I will functional startup prototype for your pitch or mvp demo
Sebastian G
About this gig
Investors need to see something real before they write a check.
I build fully interactive prototypes that look and feel like
finished products complete navigation, realistic data,
polished UI. Not a mockup. Not a PDF. Something you can
actually click through in the room.
Built for pre-seed and seed-stage founders who need to:
Pitch investors with something tangible
Validate the idea with early users
Present to co-founders or partners
What you get:
Multi-screen navigable prototype
Realistic demo data that tells your story
Professional design that signals credibility
Delivered as a single file no hosting required
Fast turnaround for tight pitch timelines
Industries I've built for: fintech, SaaS, marketplace,
healthtech, proptech, edtech, and more.
Share your idea. I'll make investors take it seriously.
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know Sebastian G
Sebastian G
Custom AI Agents, Internal Web Tools And Startup Prototypes
- FromColombia
- Member sinceApr 2026
- Avg. response time11 hours
Languages
Spanish, English
I don't deliver templates. I build custom digital solutions that look premium and work from day one.
— Branded AI chatbots with their own visual interface and identity.
— Internal web tools that replace spreadsheets and manual processes.
— Startup prototypes that make investors take your idea seriously.
Business thinking + high-end UI design. You bring the problem, I deliver something that looks like it cost ten times more.
FAQ
What information do you need from me to get started?
Your startup concept, the core user flow you want to show, and any references for design style or competitor products. A one-pager or pitch deck draft is helpful but not required.
Is this a real working product?
It's a fully navigable prototype — it looks and functions like a real product but runs without a backend or database. Perfect for demos, pitches, and user testing.
Can I edit the content myself after delivery?
The Premium package includes clearly structured, easy-to-update content throughout. Basic and Standard packages can be updated with a revision request.
What file format do you deliver?
A single HTML file that opens in any browser on any device. No installation, no server, no subscription required. You can demo it from your laptop anywhere.
