Custom Contractor Management System (Replace Tradify)

Project Name: Custom Contractor Management System (Replace Tradify)

Project Type: Full custom web + mobile application

Overview: We are building a full contractor management system to manage engineers, subcontractors, jobs, timesheets, invoicing, GPS tracking, and reporting. The system must be scalable (currently 9 engineers, future 500+), secure, -compliant, and integrate with Sage first and Xero later.

We need a freelancer (or small team) to develop both backend + frontend, mobile apps, and database according to detailed specifications.

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1️⃣ Key Features / Requirements

A) Web Dashboard (Managers/Admins/Accountants) • Job management (create, assign, track status, attach files/photos) • Subcontractor management (assign jobs, track jobs, generate POs, track invoices) • Client invoice management (create, track, integrate with Sage) • Reports: Timesheets, material usage, profit analysis • Engineer live map / GPS tracking overview • Alerts: overdue invoices, missing photos, incomplete jobs • Role-based access: Admins, Managers, Accountants, Field Supervisors

B) Mobile App (Engineers) • Job list (assigned / in progress) • GPS tracking (real-time + periodic, check-in/out) • Job report form: • Time on site (auto/manual) • Parking / fees • Findings & recommendations • Tick-box checklists • Photos (before/during/after) • Timesheet tracking + weekly summary

C) Subcontractor Module • Generate Purchase Orders (POs) • Track subcontractor invoices (manual + CSV/XLSX upload) • Automatic reminders for due / overdue invoices • Exportable / Sage integration

D) Invoicing Module • Quote → Job → Invoice workflow • Retainers / deposits • Sage integration first → Xero later

E) File Upload / Import • CSV/XLSX upload for subcontractor invoices • Validate fields, duplicates, missing info • Track manual vs file-uploaded invoices

F) Reporting • Job summary, material usage, profit analysis • Timesheets & payroll export • Engineer GPS history / route playback

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2️⃣ Technical Requirements • Backend: Node.js + NestJS • Web Frontend: React + TypeScript • Mobile App: React Native (iOS + Android) • Database: PostgreSQL • Realtime cache / GPS: Redis • Hosting: AWS + Docker + CI/CD • Accounting integration: Sage first, Xero later • Notifications: Push + Email • -compliant storage and encryption

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3️⃣ Deliverables • Mobile apps for engineers (iOS + Android) • Subcontractor management module (web + optional mobile) • Timesheet + GPS tracking module • Database schema & API endpoints • File upload / import functionality • Deployment scripts (AWS / Docker / CI/CD) • Documentation (user manual + API documentation)

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4️⃣ Project Phases / Milestones

Phase 1

• MVP: • Engineer mobile app (GPS + job reports + timesheets) • Web dashboard (job management + reporting) • Subcontractor module (manual + file upload invoices + POs) • Invoicing (Sage integration)

Phase 2

• Optional: • Advanced reporting / analytics • Material stock & procurement

Phase 3

• Optional / Future: • SaaS multi-company version • AI-assisted job report summary • Fleet & asset tracking

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5️⃣ Requirements from Freelancer • Experience with Node.js, React, React Native, PostgreSQL, AWS • Experience building CRM / ERP / field service apps • Experience with API integration (Sage/Xero) • Ability to handle file uploads, CSV/XLSX imports, and validation • Strong English communication and documentation skills • Deliver code in phases/milestones • Provide full technical documentation + deployment scripts

Budget: GBP 2500 (Fixed Price)

Proposals: 51 freelancers have applied