Z

Zebulun Barnett

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United States

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Résumé

Jobs verified_user 0% verified
  • Nopcommerce
    Senior .NET Software Engineer
    Nopcommerce
    Jan 2022 - Current (4 years 7 months)
    Designed and implemented shopping cart and checkout workflows using C#, ASP.NET Core, and SQL Server, supporting reliable order creation and end-to-end payment processing. Enabled scalable checkout operations for 50K+ users and 100K+ monthly transactions, sustaining fast, consistent payment processing during high-demand periods. Built RESTful checkout APIs with ASP.NET Core Web API, handling cart state management, pricing calculations, promotions, and order validation. Integrated third-party payment gateways using secure, token-based payment flows, ensuring compliant, safe, and resilient transaction handling. Developed responsive checkout and cart experiences using HTML, CSS, JavaScript, and React/Angular, improving usability across desktop
  • Upstart
    Senior Full Stack Developer
    Upstart
    Oct 2018 - Dec 2021 (3 years 3 months)
    Implemented credit decisioning and loan lifecycle workflows using C#, ASP.NET Core, .NET background services, and event-driven architecture, enabling fast, consistent approvals while supporting manual review when required. Enabled lending operations for 50K+ users and 10K+ monthly loan transactions by scaling backend workflows and integrations reliably. Integrated third-party credit bureaus and identity verification services with secure REST APIs and validation logic, improving risk assessment accuracy and system reliability. Designed event-driven processing for loan applications and status updates using RabbitMQ and asynchronous consumers, increasing throughput and resilience during traffic spikes. Ensured data integrity across loan origin
  • 3
    Software Engineer
    3Gtms
    Sep 2016 - Sep 2018 (2 years 1 month)
    Designed and delivered core TMS functionality for shipment creation, routing, and lifecycle management using C#, ASP.NET Core, .NET, and SQL Server, enabling reliable end-to-end transportation workflows. Integrated multiple carriers and 3PL partners via REST APIs, webhooks, and adapter layers, standardizing rate shopping, booking, and shipment tracking across diverse providers. Enabled scalable TMS operations handling 50K+ shipments per month by implementing event-driven processing, queue-backed workflows, and resilient carrier integrations. Implemented real-time shipment tracking and status updates using event-driven and asynchronous processing, improving visibility for operations teams and customer-facing applications. Built scalable, que
  • HealthTap
    .NET Developer
    HealthTap
    May 2013 - Aug 2016 (3 years 4 months)
    Developed core telehealth features for a hybrid virtual-care platform using C#, ASP.NET Core, .NET, and AWS, enabling secure remote consultations and scalable patient workflows. Implemented RESTful backend services for scheduling, virtual visits, and provider workflows with ASP.NET Core Web API, ensuring reliable data exchange across patient and clinician applications. Built state-driven patient and provider UI components with Angular and TypeScript, handling real-time data updates, API integration, and error states. Integrated authentication, role-based access control, and audit logging using .NET security patterns, supporting healthcare data privacy and compliance requirements. Optimized application responsiveness and stability by reducin
Education verified_user 0% verified
  • Lamar University
    Bachelor's degree, Computer Science
    Lamar University
    Jan 2009 - Jan 2013 (4 years 1 month)