We’re an innovative and experienced eCommerce agency dedicated to delivering impactful solutions. With a legacy dating back to 2006, On Tap is one of the longest-standing experts in the eCommerce space. As the first Magento Solution Partner in the UK in 2007—and among the first five globally—we’ve been at the forefront of digital commerce from the start.

Our expertise has since grown to include platforms like Adobe Commerce, Shopware, Shopify, BigCommerce, and more. At On Tap, we take pride in serving as trusted partners, helping businesses thrive in the ever-evolving digital landscape. In September 2024, On Tap officially joined the ecosystem of BSS Group – the trusted full-service eCommerce solutions provider, for strategic global expansion.


We are looking for a Magento 2 Backend Developer to design, develop, and maintain scalable, high-performance eCommerce solutions. You’ll play a key role in building custom features, optimizing performance, and ensuring integrations run smoothly.

If you also have Shopify experience, that will be a strong plus — we value flexibility across multiple platforms.

Key Responsibilities:

  • Develop, maintain, and optimize Magento 2 backend modules, APIs, and integrations.
  • Build and extend custom features while adhering to Magento coding standards.
  • Ensure high system performance, scalability, and reliability.
  • Work closely with frontend developers to ensure smooth integration between backend and UI.
  • Implement and maintain third-party system integrations (ERP, CRM, payment gateways, etc.).
  • Write clean, efficient, and well-documented code following SOLID principles.
  • Conduct code reviews and contribute to improving overall code quality.
  • Diagnose and resolve complex technical issues across environments.
  • Stay up to date with Magento ecosystem updates, best practices, and emerging technologies.

Requirements:

  • 3+ years of Magento 2 backend development experience.
  • Strong knowledge of Magento 2 architecture, module development, and customization.
  • Experience with REST & GraphQL APIs, Composer, and Dependency Injection (DI).
  • Deep understanding of EAV, indexing, caching, and database optimization.
  • Strong PHP and MySQL skills.
  • Experience with Linux environments and CLI tools.
  • Familiarity with Git, CI/CD, and Agile methodologies.
  • Good English communication skills (written and spoken).

Nice to Have:

  • Experience with Shopify app or backend development.
  • Knowledge of Adobe Commerce Cloud setup and deployment processes.
  • Experience with Magento performance tuning and server optimization.
  • Contributions to Magento Open Source or community projects.
  • Familiarity with microservices or headless architectures.

Benefits:

  • Competitive Package, reviewed every 6 months.
  • Gain deep insights into ecommerce and business strategy through direct guidance from our Managing Director.
  • Fast-track opportunities for professional development and advancement.
  • Experience a fast-paced, results-driven, and collaborative work environment that fosters innovation and achievement.
  • 5-day workweek (Monday to Friday, 9 AM to 6:15 PM)
  • 13.5 days of annual absence (12 days in accordance with the law + 1.5 days company trip).
  • Social and health insurance in accordance with the Vietnam Labor Code.
  • Birthday gifts, seniority allowance, course & certificate coverage.