QualDev Inc.

QualDev Inc. is a web and mobile application development company on Old South Path in Melville with more than 15 years in business and a team of over 75 people. It has built more than 750 web applications and works with clients in over 20 countries, with about 60 percent of its clients coming from referrals. Its core work is e-commerce development on Adobe Commerce (Magento), Shopify, and WooCommerce, including migrations, integrations, performance improvements, and B2B stores. QualDev also builds iOS, Android, and cross-platform mobile apps and progressive web apps, handles custom PHP development, and provides UI/UX design, QA testing, A/B testing, and server administration. On the marketing side, it offers SEO, paid search, email, marketplace management, and AI-driven growth services for e-commerce brands. It fits online retailers and B2B companies that need ongoing development, app work, and growth support from a single technical team.