Senior Full Stack Engineer Needed for Advanced Financial Workflow System

I am building a high-level financial control system similar in complexity to an ERP.

The objective is to manage 100% of company financial flows with strict validation, reconciliation, and auditability.

This is not a basic accounting app.

This is a workflow-driven financial intelligence platform.

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Core Concept

The system operates on a dual financial reality:

• Declared
• Non-Declared

Every financial transaction must belong to one of these two states.

All dashboards and reports must always display:

Declared | Non-Declared | Total Real

There is only one manual action in the system:

Classifying a document as REAL or FICTIVE.

Everything else must be automated.

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Core Functional Scope

Phase-based workflow engine including:

• Mass document import (Drive, cloud, accounting exports, scanner)
• OCR + intelligent document classification
• Multi-phase validation system (Production → Verification → Test)
• Accounting reconciliation (documents vs accounting entries)
• Bank reconciliation + full cash circuit tracking
• Cost center reporting (Declared / Non-Declared / Total)
• Stock management with barcode generation
• HR & payroll (Declared + Non-Declared salaries)
• Legal contract tracking
• Litigation management with provision logic
• Full audit trail with rollback capability

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Technical Requirements (Preferred Stack)

Frontend:

(React) PWA

Backend:

Python (FastAPI)

Database:

Postgre

SQL

OCR:

Tesseract / Vision API

Storage:

S3 compatible

Architecture:

Workflow engine / state machine

Security:

RBAC + encrypted storage + audit logging

Open to architectural suggestions if justified.

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What I Expect From You

• Senior-level engineering (7+ years)
• Experience with ERP / accounting / fintech systems
• Strong database design mindset
• Ability to design validation-heavy systems
• Clean architecture and test-driven thinking
• Risk identification before implementation

Before coding starts, I require:

1. System architecture proposal

2. Database schema draft

3. Workflow/state machine design

4. MVP breakdown

5. Risk analysis

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Project Structure

Milestone 1 – Architecture & DB Design

Milestone 2 – Core Workflow Engine + Document Processing

Milestone 3 – Accounting & Bank Reconciliation

Milestone 4 – Reporting & Cost Centers

Milestone 5 – Testing & Hardening

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To Apply

Please include:

1. ERP / financial systems you have built

2. How you would design a workflow-based validation engine

3. Your approach to accounting and bank reconciliation logic

4. Estimated timeline for MVP

5. Technical risks you identify

Generic proposals will not be considered.

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Collaboration Style

Clear communication.

Structured milestones.

Quality over speed.

Long-term collaboration possible.

Contract duration of 1 to 3 months. with 30 hours per week.

Mandatory skills:

Python, API, ERP Software, fast api, Financial Accounting, OCR Software, React, , Postgre

SQL