Senior Backend Developer (JavaScript / NestJS)

We are looking for a Senior Backend Developer (JavaScript / NestJS) to join our team and contribute to the development and scaling of our POS platform and related business services.The ideal candidate should have strong backend development experience, a solid understanding of scalable system architecture, and the ability to work effectively with an existing production system.Key Responsibilities:Develop and maintain backend services using NestJS and JavaScriptBuild and maintain reliable and scalable REST APIsImprove and optimize existing backend architectureWork with databases, authentication, roles, and permissionsIntegrate third-party APIs and external servicesTroubleshoot, debug, and resolve production issuesMaintain clean, secure, and maintainable codeParticipate in the continuous development and expansion of the platformRequirements:Strong experience with JavaScriptStrong hands-on experience with NestJSGood knowledge of databases and backend architectureExperience with API development and integrationsExperience with authentication and authorization systemsStrong debugging and problem-solving skillsAbility to understand and improve an existing codebaseGood understanding of scalable and secure backend systemsPreferred Experience:POS / Cashier systemsRestaurant or retail technologyOrder management systemsInventory and branch managementPayment gateway integrationsReceipt printers and printing servicesDelivery platform integrationsCloud and production environmentsWe are looking for a developer who is technically strong, proactive, and interested in contributing to the long-term growth and development of the platform.