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Frontend Engineer with 4 years of experience building high-traffic online casino platforms using React and TypeScript. Led a company-wide refactor (Phoenix) improving component performance by 20%, shipped 16+ SEO-optimized Next.js sites, and delivered multiple full-stack products end-to-end.…

Omar Beslic

Front-End Developer, Full Stack Developer, Web Developer, +2

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Frontend Engineer with 4 years of experience building high-traffic online casino platforms using React and TypeScript. Led a company-wide refactor (Phoenix) improving component performance by 20%, shipped 16+ SEO-optimized Next.js sites, and delivered multiple full-stack products end-to-end.…

Available to hire

Frontend Engineer with 4 years of experience building high-traffic online casino platforms using React and TypeScript.
Led a company-wide refactor (Phoenix) improving component performance by 20%, shipped 16+ SEO-optimized Next.js sites, and delivered multiple full-stack products end-to-end.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Work Experience

DentCare — Multi-Tenant Dental Practice Management Platform (Architect/Developer) at Self-employed

May 1, 2026 - Present

Architected a SaaS-ready multi-clinic platform with full tenant isolation (isolated database per clinic) and white-label branding. Implemented RBAC (Super Admin, Admin, Dentist, Assistant) with granular permission-based data visibility using NextAuth v5. Built an interactive FDI tooth chart with per-tooth treatment history, and an appointment scheduler with real-time conflict detection plus a public no-login patient booking page.

Full-stack E-commerce Platform (Frontend/Backend) at Self-employed

January 1, 2025 - April 30, 2025

Built a storefront and admin dashboard with Next.js, TypeScript, ShadCN UI, and Tailwind CSS, including multi-filter search, complete checkout flow, and admin CRUD. Implemented global state with Zustand. Designed backend using Next.js API routes, Prisma, MySQL schemas for products/orders/users/payments, and integrated Stripe with secure webhook-driven order lifecycle management.

Salt Montenegro — Charter Booking Platform (Frontend/Full-stack) at Self-employed

June 1, 2024 - July 31, 2024

Developed a boat and fishing tour reservation platform with tour browsing, bookings, and customer reviews using React, Redux Toolkit, and Strapi CMS. Designed a custom multilingual i18n system allowing the client to add/manage unlimited languages directly through the CMS, with dynamic translation across the application.

Independent Products & Freelance at Self-employed

June 1, 2024 - Present

Delivered full products end-to-end, from architecture to deployment, across multi-tenant SaaS, e-commerce, booking platforms, and content-managed experiences. Projects include a dental practice management SaaS with tenant isolation and role-based access control, an e-commerce storefront and admin with Stripe checkout via webhook-driven order lifecycle, and a charter booking platform with multilingual CMS-driven content.

React Frontend Developer at iGamingPlatform

May 1, 2022 - May 1, 2026

Led the Phoenix refactor, a company-wide codebase overhaul that improved component render performance by 20% by splitting legacy modules (1,000+ lines) into small, testable units and reducing complexity and onboarding time. Architected and maintained a library of 40+ reusable React components across casino products, owning technical design, state management, and responsive implementation. Reduced initial load times by ~30% using React Query server-state caching plus code splitting, lazy loading, and tree-shaking optimizations. Built a custom CMS from scratch to enable content teams to publish/manage casino content without developer involvement. Designed API contracts and managed real-time casino data flows using Redux (normalization/transformation). Shipped 16+ SEO-focused affiliate marketing sites with lightweight CSS and strong performance and SEO outcomes.