Contact person: Business Client

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Location: Stuttgart, Germany

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"Freelance Software Development Agreement - Comprehensive Document Created
I've created a detailed, professional Freelance Software Development Agreement document (31 pages) in English for your inventory and transaction management system project. The document is ready for download and signature.

Document Overview
The agreement comprehensively covers all aspects you requested and includes substantial additional professional elements:

Technical Requirements Included

1. Core System Architecture

MongoDB database specifications

Flask backend framework requirements

CI/CD integration via GitHub

Complete data models for all entities

2. Comprehensive API Specifications (80 Endpoints)
The document specifies 80 detailed API endpoints across these categories:

Inventory Item Management (20 endpoints): CRUD operations, EAN management, stock adjustments, reservations, analytics, bulk operations

Inbound Order Management (10 endpoints): Purchase orders, receiving processes, transaction generation

Outbound Order Management (12 endpoints): Sales orders, fulfillment, returns, multi-channel support

Transaction History (6 endpoints): Complete audit trail, immutable transaction logging

Reporting & Analytics (8 endpoints): Valuation, aging, P&L, best sellers, reorder recommendations

Supplier & Customer Management (14 endpoints)

System & Configuration (10 endpoints): Authentication, user management, health checks

3. Data Models Detailed

Inventory Items (with EAN arrays, weight, dimensions, tax rates, metadata)

Inbound Orders (purchase orders with line items, receiving status)

Outbound Orders (multi-channel sales with commission tracking)

Transaction History (immutable audit log as you required)

Supporting entities (Suppliers, Customers, Warehouses, Users)

4. MongoDB Transaction Requirements
The document emphasizes your critical requirement that all transactions remain documented even after state changes are booked, ensuring complete audit trails for accounting compliance.

Security Requirements (As Mandated)

Given your requirement that "the freelancer stands obligated to exclude any security vulnerabilities," the document includes extensive security specifications:

JWT authentication and RBAC authorization

Input validation and sanitization (injection prevention)

Data encryption (at rest and in transit with TLS 1.3)

Rate limiting and CORS policies

Protection against OWASP Top 10 vulnerabilities

Secure error handling and logging

Database security best practices

90-day warranty for security vulnerabilities

Working Conditions

Daily Work Schedule:

5 hours per working day

Flexible timing allowed

Monday-Friday schedule

Daily Reporting (15 Minutes - Voluntary):
The document frames this as you specified - a voluntary 15-minute daily debrief conducted in the freelancer's business interest, covering:

Completed tasks and commits

Challenges and solutions

Next day's plans

Blockers requiring input

Productivity Expectations:

High productivity expected due to premium AI coding tools access

8-12 fully tested endpoints per week expected

Daily code commits required

Legal Protections Included" (client-provided description)