ISOLA DANIEL

Full Stack Developer | MERN Stack Engineer | React.js, Next.js & Node.js Expert | SaaS & AI Application Developer

Website.com • Freelance

Jan 2024 - Mar 2026 • 2 yrs 2 mos

I worked as a Full Stack Developer in a software company where I built scalable SaaS platforms, custom web applications, AI-powered systems, responsive business websites, and enterprise-grade software solutions for clients across multiple industries. As a Full Stack Web Developer, I personally designed, developed, tested, and deployed modern applications using React.js, Next.js, Node.js, Express.js, MongoDB, PostgreSQL, Firebase, and Supabase. I worked closely with product managers, UI/UX designers, backend engineers, and business teams to deliver high-performance, SEO-optimized, and production-ready applications. I developed custom dashboards, CRM systems, admin panels, REST APIs, real-time applications, authentication systems, AI SaaS products, and automation platforms while ensuring scalability, security, responsiveness, and clean application architecture. I also handled frontend development using React.js, Next.js, JavaScript, TypeScript, Tailwind CSS, Bootstrap, Redux, and responsive web design principles to create fast, modern, and mobile-friendly user interfaces. On the backend, I developed scalable server-side applications using Node.js, Express.js, MongoDB, PostgreSQL, JWT Authentication, Socket.io, Firebase, and Supabase while integrating third-party APIs including Stripe API, OpenAI API, payment gateways, cloud services, and external business automation tools. I optimized applications for speed, SEO performance, database efficiency, API security, scalability, and user experience while deploying applications using Vercel, Netlify, Docker, GitHub, and cloud deployment infrastructures. During my time in the software company, I worked on fintech platforms, eCommerce systems, healthcare applications, AI automation tools, social media management systems, crypto-related platforms, startup MVPs, and enterprise software solutions. My expertise includes Full Stack Development, MERN Stack Development, React.js Development, Node.js Development, Next.js etc

Senior MERN Stack Developer | Full Stack Web Engineer | React.js & Node.js Expert | SaaS & AI Web Application Developer

Software Keys Hub • Freelance

Feb 2023 - Aug 2024 • 1 yr 6 mos

I worked as a MERN Stack Developer and Full Stack Web Developer in a fast-paced digital agency where I built scalable web applications, AI SaaS platforms, custom business websites, and high-performance dashboard systems for startups, enterprise businesses, and growing brands worldwide. As a React.js Developer and Node.js Developer, I personally developed and maintained full-stack MERN applications using MongoDB, Express.js, React.js, and Node.js while collaborating with UI/UX designers, backend engineers, and project managers to deliver modern, responsive, and SEO-optimized solutions. I developed custom web applications, SaaS MVPs, admin dashboards, CRM systems, real-time chat applications, and eCommerce platforms with secure authentication systems, payment gateway integrations, and REST API development. I also handled third-party API integrations including Stripe API, Firebase, Supabase, OpenAI API, and cloud-based automation systems. My responsibilities included frontend development with React.js, Next.js, JavaScript, TypeScript, Tailwind CSS, Bootstrap, and Redux while also managing backend development with Express.js, MongoDB, PostgreSQL, JWT Authentication, Socket.io, and scalable server-side architectures. I optimized web applications for speed, SEO performance, scalability, responsiveness, and user experience while deploying production-ready applications using Vercel, Netlify, Docker, GitHub, and cloud deployment infrastructures. As a SaaS Developer and API Integration Expert, I worked on multiple projects across fintech, healthcare, real estate, crypto, automation, social media management, and AI-powered platforms. I also contributed to debugging complex production issues, improving application performance, and building scalable startup MVP solutions for clients. My expertise includes: MERN Stack Development, Full Stack Development, React Development, Node.js Development, MongoDB Database Management, Express.js, Next.js Applications, Web architecture