Lead Backend Engineer

The core responsibilities for the job include the following:
Technical Leadership:
Own backend architecture for the A2ZPOS platform: API design, service boundaries, data models, and integration patterns.
Define and enforce engineering standards: code review practices, testing strategy, CI/CD, documentation, and release discipline.
Lead technical planning and estimation with product and engineering leadership.
Mentor backend engineers through code reviews, pairing, and career growth.
Design and develop scalable backend systems for POS operations across retail, restaurants, and multi-location merchants.
Build and maintain secure, high-performance RESTful APIs for web, mobile, and in-store clients.
Own modules for sales transactions, inventory, customer management, loyalty, and reporting data feeds.
Integrate payment gateways, POS hardware services, and third-party business systems.
Optimize MySQL (and future PostgreSQL) for high-volume transactional workloads and reporting use cases.
Implement authentication, authorization, and multi-tenant data isolation best practices.
Migration and Modernization:
Lead incremental migration from the Laravel monolith to modern service architecture (e. g., NestJS/TypeScript services).
Define API contracts and integration boundaries between legacy and new services.
Identify high-risk areas (payments, inventory sync, reporting) and prioritize safe migration paths.
Requirements:
Strong hands-on experience with PHP and Laravel (current production stack).
Expertise in MySQL: schema design, indexing, query optimization, transactions, and data integrity at scale.
Strong understanding of RESTful API development.
Experience working with POS, retail, restaurant, ERP, inventory, or e-commerce applications and payment gateway integrations.
Authentication and authorization: JWT, OAuth, role-based access, multi-tenant scoping.
Strong understanding of database indexing, transactions, and data integrity.
Git, code review workflows, and collaborative development practices.
Familiarity with Linux-based deployment environments.

Experience
7-11 yrs