Hello, I'm

Alen Varaždinac

Senior Frontend Engineer, Vue & React Specialist, SaaS Builder

I build web applications that solve real problems.

About

I'm a frontend-focused full-stack developer with 7 years of experience building scalable web applications and SaaS platforms. I specialize in Vue and React, and their frameworks Nuxt and Next.js. Having used them extensively across both professional teams and my own SaaS products.

I'm comfortable across the whole stack: I owned .NET backend work at Threecolts, and I build on Node.js, Convex, and Supabase for my own products. I'm based in Osijek, Croatia and work remote.

Right now I'm building SaaS products independently - MajstorPro, SlotSwift, Opinuity, ClearPixel, and BentoHighlights - applying the same product instincts from seven years of client and product work to things I own end to end.

Experience

Where I've worked

Led frontend redesign of a SaaS platform for Amazon sellers, rebuilding core modules under a hard deadline due to a deprecated Amazon SP-API, ensuring uninterrupted service for 20,000+ active seller accounts
Built and optimized complex sourcing, listing, and analytics modules using Amazon's SP-API
Took full ownership of .NET backend bug fixes and feature development alongside frontend responsibilities
Maintained internal libraries and improved frontend performance and stability
Regularly presented product demos and updates to stakeholders

Projects

Things I've shipped

MajstorPro

Live

Field service management for Croatian/Bosnian plumbers, electricians, and HVAC technicians - schedule jobs, track payments, and generate PDF invoices instantly.

Next.jsConvexClerkPolar.sh

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SlotSwift

Live

Appointment scheduling SaaS for service businesses with automated email reminders, calendar invites, and self-service rescheduling.

Next.jsConvexStripeResend

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