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Alexander K
@alexanderkustan
SaaS and AI Product Builder
Slovakia
English, Russian, Slovak, Ukrainian
About me
I build and improve SaaS products for founders. From early MVPs and AI-built prototypes to production-ready software. My work combines product thinking, UX, full-stack engineering, AI features, billing, analytics and deployment.
I’ve built a SaaS product that reached ~$6k MRR, so I approach projects as products, not isolated coding tasks. I can help you launch a new MVP, rescue an unfinished AI-built product, or add production AI capabilities to an existing SaaS.
I focus on clear scope, strong UX, maintainable architecture and software ready for real users.
Skills
Alexander K
Offline •
Average response time: 1 hour
See my services
Development & MVP
I will fix, complete and launch your lovable or vibe coded saas
Portfolio
Work experience
Founder / SaaS Product Builder
Elnera • Self-employed
Aug 2025 - Present • 1 yr
Own product work end to end across problem definition, UX, architecture, full-stack engineering, billing, analytics, AI integrations and launch. Built a SaaS product that reached approximately $6k MRR. I focus on turning product ideas and prototypes into reliable software for real users.
Full-Stack Developer & Product Designer
Fiverr • Freelance
Mar 2025 - Present • 1 yr 5 mos
Built web applications and product features end to end, combining interface design, frontend, backend, databases, APIs, payments and deployment. My work is focused on SaaS, MVPs and product development rather than design-to-code implementation only.
9 Reviews
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
1-5 out of 9 Reviews
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Most relevant
ec_boyz
United States
Very knowledgeable
$50
Price
1 day
Duration
Helpful?
salesmacho
Germany
Ongoing collaboration
It great working with Alexander on this complex project!
$400-$600
Price
4 weeks
Duration
Seller's Response
Helpful?
salesmacho
Germany
Ongoing collaboration
Working with Alexander for great! He's very responsive and I'm satisfied
$100-$200
Price
10 days
Duration
Helpful?
kevinnn55
Slovakia
Ongoing collaboration
*"Working with Alexander was an excellent experience. He completely modernized my website — not only with a fresh and professional design, but also with faster performance and better functionality. Communication was smooth, every detail was explained clearly, and he delivered exactly what I needed (and...
$50
Price
12 days
Duration
Helpful?
kevinnn55
Slovakia
Ongoing collaboration
⭐️⭐️⭐️⭐️⭐️ Alexander did a fantastic job creating my website! 🌐 He was always ready to explain every detail, responded quickly, and worked very professionally. The whole process went smoothly and without stress – from the first drafts to the final solution. The website works exactly as I imagined, and...
$50-$100
Price
7 weeks
Duration
Seller's Response
Helpful?
