j
johnnex49

JOHNNEX

@johnnex49

Expert Full Stack Developer, Shopify developer and B2B wholesale website

Regno Unito
Inglese, Francese, Tedesco, Italiano, Spagnolo, Greco
Alcune informazioni sono riportate in lingua inglese.
Chi sono
I’m an expert full-stack developer specializing in custom web applications, SaaS platforms, mobile apps, AI-powered solutions, APIs, dashboards, and business software. I help startups, entrepreneurs, and established businesses turn ideas into fast, secure, scalable digital products. From MVPs and prototypes to complex production systems, I handle the full development process with clean code, modern technologies, responsive design, and a strong focus on performance, usability, and long-term growth.... Continua a leggere

Competenze

j
johnnex49
JOHNNEX
offline • 

Consulta i miei servizi

Shopify
I will build a shopify b2b wholesale website, portal and bulk ordering system
A partire da90 USD / progettoMaggiori dettagli
Shopify
I will build a shopify multi vendor marketplace with seller portal
A partire da200 USD / progettoMaggiori dettagli

Esperienza lavorativa

Programming_Hub

Full-Stack Developer

Programming Hub • Freelance

Apr 2022 - Aug 2026 • 4 yrs 4 mos

I specialize in designing and developing custom digital products for startups, entrepreneurs, and businesses. My work covers full-stack web applications, SaaS platforms, mobile applications, APIs, dashboards, business management systems, and AI-powered applications. Key responsibilities and expertise: Develop responsive and scalable web applications from concept to deployment. Build modern frontend interfaces using React, Next.js, JavaScript, and TypeScript. Develop secure backend systems, REST APIs, authentication, and database architecture. Build cross-platform mobile applications using Flutter and/or React Native. Develop SaaS products with user management, subscriptions, dashboards, and payment integrations. Integrate third-party services, APIs, AI platforms, payment gateways, and cloud services. Design database structures using PostgreSQL, MySQL, MongoDB, Firebase, or Supabase. Troubleshoot, optimize, maintain, and improve existing applications. Collaborate with clients to transform business requirements and ideas into functional software solutions. Focus on clean code, security, performance, scalability, responsive design, and excellent user experience.