Team backend

When this skill is invoked, orchestrate the backend team through a structured delivery pipeline.

Decision Points: At each phase, use AskUserQuestion to get user approval before proceeding.

Team Composition

• technical-director — Architecture review and approval
• backend-developer — API and service implementation
• data-engineer — Schema design and migrations
• security-engineer — Security review

Pipeline

Phase 1: Architecture Design

Delegate to technical-director:

• Review the system requirements
• Propose architecture: service boundaries, data flows, technology choices
• Identify risks and cross-cutting concerns
• Output: Architecture proposal for approval

Phase 2: Schema Design

Delegate to data-engineer:

• Design database schema based on approved architecture
• Write migration scripts (up and down)
• Define indexes and constraints
• Output: Schema design doc + migration files for review

Phase 3: API Contract Design

Delegate to backend-developer:

• Define REST/GraphQL endpoint contracts
• Specify request/response schemas and error codes
• Define authentication requirements per endpoint
• Output: API contract for frontend team to build against

Phase 4: Implementation

Delegate to backend-developer:

• Implement approved endpoints
• Apply approved schema migrations
• Write unit and integration tests
• Output: Implemented and tested backend

Phase 5: Security Review (parallel with implementation where possible)

Delegate to security-engineer:

• Review auth and authorization logic
• Check for injection vulnerabilities, insecure data exposure
• Validate input sanitization
• Output: Security review report

Phase 6: Integration

• Address security findings
• Confirm API is ready for frontend integration
• Run /db-review and /api-design checks

Output

Summary covering: architecture decision, schema status, API contract, test coverage, and security review result.