Moein Rezaie

Developed backend services for a Smart HR platform used by enterprise organizations.

• Designed and developed RESTful APIs with Django REST Framework, following a versioned architecture (api/v1) for maintainability and future scalability.
• Implemented JWT authentication, RBAC, and role-based permissions, defining and testing access boundaries for HR staff, managers, and other organizational roles.
• Used Redis for caching to reduce unnecessary database queries and improve API response performance.
• Implemented Celery background tasks for time-consuming operations such as email and notification processing, keeping API responses responsive.
• Developed core HR workflows including professional, ethical, and cultural assessments, satisfaction services, task assignment, and integration/synchronization with external HR services.
• Wrote automated tests covering authentication, authorization, permissions, API behavior, and HTTP status codes, ensuring reliable and predictable backend behavior.

Developed and maintained backend services for a product management platform handling diverse product data.

• Designed and maintained product data models for approximately 250 products with variations in size, color, material, and category.
• Used PostgreSQL indexing and optimized ORM queries to improve data retrieval and support efficient bulk updates across product records.
• Implemented product alias and synonym handling to support different names referring to the same product or concept, improving data consistency and searchability.
• Refactored database and backend components as requirements evolved, maintaining flexibility as the development team and project scope expanded.
• Collaborated with the development team to implement frequent database and business-logic changes based on evolving client and management requirements.

Led backend development for AI-powered education and real-estate platforms.

• Led the backend development team and designed core backend services for an AI-powered online education platform, supporting students, instructors, and support managers.
• Implemented role-based permissions and workflows for course and instructor selection, support ticketing, profile completion, and instructor role transitions.
• Developed and tested authorization rules and business logic to ensure each user role had appropriate access to platform resources and actions.
• Developed backend services for an AI-powered real-estate web platform, including property registration, management, and intelligent property analysis.
• Integrated AI-based image and map analysis to extract approximate property information such as area, dimensions, and map characteristics from owner-submitted images.
• Implemented backend support for Persian voice-based property search, allowing users to search real-estate listings using natural spoken queries.

Developed backend, database, automation, and intelligent search solutions for a B2B construction and industrial products platform.

• Developed n8n automation workflows and messaging bots across Bale and Rubika, enabling automated product search and communication between the business and its customers.
• Designed and maintained a PostgreSQL product database containing 10,000+ products with inconsistent naming, multiple brands, languages, commercial terminology, and varied measurement formats.
• Improved product search and data consistency through database indexing, unique constraints, data normalization, and standardized product attributes such as size, brand, category, and title.
• Designed a JSON-based product metadata structure to extract and normalize key attributes from product data, enabling more accurate and structured search.
• Implemented search preprocessing to normalize user queries and extract product characteristics such as size and product terminology, including conversion between commercial, metric, and inch-based measurements.
• Built automated product price processing workflows that identified new products for insertion and updated existing products and their indexed data while preserving product records.
• Developed data structures and reporting workflows for monitoring user activity and business KPIs, supporting operational analysis and decision-making.