רחל צימרמן

Senior Full-Stack Developer with 8 years of experience building ERP, WMS, and integration services in production. Specializing in business systems integration (Priority ERP, E-Commerce, Government), asynchronous service architectures with RabbitMQ, and .NET / SQL Server development. Built and maintains dozens of production services for Israeli business clients, with full ownership of the development lifecycle.

Full-Stack Developer | Backend & SQL Server at FALKOR (2023-01 – Present)

• Designed and developed Backend systems and services in ASP.NET Core; maintained and extended legacy ASP.NET WebForms modules.
• Built and deployed REST APIs and integrations with enterprise and third-party systems.
• Designed and developed complex SQL Server databases (Stored Procedures, Triggers, Views, Functions).
• Developed WMS modules handling daily warehouse operations, improving inventory accuracy and reducing manual processing.
• Integrated with external systems including Priority ERP.
• Built integration and synchronization between E-Commerce platforms (Shopify, WooCommerce, Wix, Konimbo, RichKid), ERP systems (Priority, BOSS, BGATE, Rivhit), logistics/shipping systems (Globus, Orian, Cheetah, Segment), and POS & payment systems (RNET, Verifone), processing real-time orders with high availability.
• Connected systems to government services (Israel Tax Authority — Israel Invoices / e-invoicing).
• Implemented asynchronous service-to-service communication using RabbitMQ (.NET Worker Services).
• Developed in.NET 8 /.NET 6 including Web APIs and Worker Services.
• Iterative delivery to business clients with incremental production rollouts.
• Hands-on experience with AI coding tools (Claude Code, Codex, GitHub Copilot).
• Managed source control with Git across multiple parallel projects.

Full-Stack Developer at Comax / Native Data Systems (2018-01 – 2023-12)

• Developed and maintained Web systems based on ASP.NET and JavaScript.
• Built Background services for data processing, synchronization, and updates.
• Owned the full development lifecycle: requirements, development, testing, code review, and production deployment.
• Developed and optimized SQL Server queries, Stored Procedures, and indexes for production workloads.
• Improved performance and maintained production systems supporting core business processes.
• Served as a Mentor for new developers, providing onboarding and code-review guidance.

Practical Software Engineering Diploma – College of Management (2015-01 – 2017-12)

Course in SQL Performance Optimization (2022-01)