Vo Thanh Do

• Microservices (.NET & NestJS): Designed services by bounded contexts; DI-first, versioned REST, OpenAPI/Swagger, clear service boundaries.
• Event-driven (RabbitMQ): Built pub/sub & work-queues; idempotent consumers, retry/backoff, DLQ; transactional outbox for consistency.
• AI Agents & Automation: Tool-using LLM agents to look up/summarize/update records; validation, rate-limits, audit trails, human-in-the-loop.
• AI parsing & content: Semi-structured inputs → strict JSON with validators/fallbacks; automated accessibility content.
• Search & data: Elasticsearch (index/analyzers, query DSL, zero-downtime reindex); MongoDB + PostgreSQL (schemas, migrations, indexing).
• Frontend (Next.js/React): SSR-safe CRM/Admin UIs with typed forms, schema validation, accessible states, error boundaries.
• Testing: Playwright E2E for CRM journeys; Cypress smoke; Postman regression; contract tests for API clients.
• Security: OWASP controls; secret rotation & CI scanning; pen-test fixes; standardized error taxonomy.
• Third-party: Shopify, Amazon SP-API, Walmart WFS, Attentive, Kustomer integrations.
• Leadership: Scrum cadence; mentored engineers; weekly code reviews.

• Backend: REST endpoints with ASP.NET & NestJS; DTO validation, OpenAPI/Swagger; consistent error model.
• Queues: RabbitMQ for background tasks; basic retry/backoff & DLQ.
• Data modeling: MongoDB collections & SQL schemas; added indexes, pagination, migrations.
• Frontend: React/Next.js pages; controlled forms with validation; SSR-safe data fetching.
• Testing & CI: Cypress/Playwright smoke; Postman runner; GitHub Actions (build/test/lint).
• Cloud: AWS S3/CloudWatch; minimal-privilege IAM; OWASP basics.

• ASP.NET: MVC/Razor modules; session/cookie handling; SQL Server via EF.
• Frontend: Semantic HTML/CSS/JS; mobile-first layouts; React SPA basics.
• WPF: Device-management UI with Prism/MVVM; configuration screens.
• Process: Stand-ups, code reviews, minimal CI pipeline.