Senior ERP Backend Software Engineer (Python, OOP, API)

ERP:

Solid understanding of core accounting principles: General Ledger (GL), Accounts Receivable (AR), Accounts Payable (AP), journal entries, and financial reconciliation.

• Experience developing or customizing ERP Accounting modules — including chart of accounts, multi-currency, tax handling (VAT/WHT), and period-end closing.
• Familiarity with accounting workflows: purchase-to-pay (P2P), order-to-cash (O2C), and financial reporting (P&L, Balance Sheet, Cash Flow).
• Understanding of data integrity requirements in financial systems: audit trails, double-entry bookkeeping, and transactional consistency.
• Experience with ERP platforms with strong accounting capabilities: Odoo Accounting, SAP FI, Microsoft D365 Finance, or ERPNext is a strong plus.

ERP Domain Knowledge (General)

• Understanding of at least one additional ERP domain: SCM, Manufacturing, HRM, or Logistics.
• Experience integrating ERP systems with third-party platforms (payment gateway, banking APIs, tax systems, marketplace, 3PL).
• Familiarity with core ERP concepts: Master Data, BOM, MRP, Inventory valuation, Order lifecycle.

Software Design Principles

• OOP, Design Patterns
• Event-driven Architecture
• Microservices
• Message Queue systems
• Clean Architecture

Database Experience

• MySQL, PostgreSQL, MongoDB, Redis
• Schema design, query optimization, indexing, performance tuning

Hands-on Experience

• RESTful API, GraphQL API, or gRPC API development
• WebSocket / Server-sent events
• Git, Docker, CI/CD pipelines
• Unit testing frameworks: pytest, unittest
• Message queues: RabbitMQ, Kafka, Azure Service Bus

Strong understanding of backend security and performance best practices.

Nice to Have

• Experience with Frappe Framework / ERPNext (Accounting module preferred).
• Knowledge of Vietnamese accounting standards (VAS) or localization requirements.
• Packaging & distribution experience: seed data, licensing/subscriptions, install wizards.
• Integration with datamart/reporting systems: ClickHouse, Metabase, Power BI.
• Strong understanding of web security (OWASP ASVS), RBAC/SoD, object-level permission models.