BidFlow Project Profile

Bid Flow

Project Case Study — 2026
React
Base44
Vite

Bid Flow Project Case Study — 2026

Procurement · SaaS · B2B Platform
End-to-end
procurement,
live bidding.
A dual-sided sourcing platform that connects enterprise procurement teams with verified suppliers — featuring real-time reverse auctions, compliance-grade audit trails, and intelligent supplier matching.
152
Source files
9
Data entities
10
Backend functions
2
Platform sides
Built on Base44 · React 18 · Tailwind CSS
Enterprise Procurement + Supplier Portal

Overview

A marketplace
built for procurement.
BidFlow is a full-stack SaaS procurement platform built on Base44, designed to digitise and govern the complete sourcing lifecycle — from purchase requisition through supplier evaluation to contract award.
What sets it apart is the dual-sided architecture: enterprise buyers and suppliers each get their own authenticated workspace, tailored navigation, and purpose-built workflows. It's not a single-sided admin tool — it's a procurement marketplace.
The platform enforces Segregation of Duties (SoD) at a code level, automatically routes high-value events through an approval chain, and generates court-admissible audit packs with timeline hash-locking on award.
Platform
Web SaaS (React + Base44)
Account Types
Enterprise · Supplier
Event Types
RFQ · RFP · Reverse Auction
Approval Model
Approval Lite ($25K threshold)
SoD Enforcement
Hard (creator ≠ approver)
Audit Trail
Immutable, hash-chained
Backend Functions
10 serverless functions
Automations
4 active event automations
Dev Stack
React 18 · Vite · Tailwind · shadcn/ui
State Mgmt
TanStack Query · React Hook Form
Build Phase
Phase 2 complete · Phase 3 ready

Core Capabilities

Everything procurement
actually needs.
⚡
Live Bidding
Reverse Auction Engine
Real-time live bidding room with sealed quote management for RFPs. Bid completeness validation ensures every submission is evaluable before closing.
🏗
5-Step Wizard
Event Creation Wizard
Guided sourcing event builder with AI-driven strategy recommendations (RFQ vs reverse auction), intelligent supplier matching, and hard-block launch validation.
🔒
Governance
SoD & Approval Control
Segregation of Duties enforced at the function level — event creators cannot approve their own sourcing events. Value-triggered approval routing above $25,000.
📋
Compliance
Immutable Audit Pack
One-click PDF audit pack export with event summary, bid list, supplier details, timeline, and award decision. Timeline entries hash-locked on event award.
🤝
Dual Sided
Supplier Self-Service Portal
Suppliers manage their own authenticated profile, product catalog, service listings, and document uploads. Profile completion percentage tracked in real-time.
🧠
Intelligence
Smart Supplier Matching
Algorithmic supplier recommendations scored by category alignment (+50), geographic proximity (+100), and eligibility status (+25). Geography-filtered broadcast notifications.
📊
Dashboard
Action-Driven Command Centre
Four live widgets: events closing today, low participation alerts, pending award queue, and top supplier YTD leaderboard — all clickable with direct navigation.
👥
Access Control
Role-Based Access (RBAC)
Enterprise roles: admin, procurement_manager, requester, approver, viewer. User management, team collaboration, and invitation flows within enterprise workspaces.
🔄
Automation
Event Lifecycle Automation
Scheduled auto-close of expired events (hourly), automatic bid receipt emails, approval routing triggers, and timeline immutability events — all serverless.

Architecture

Dual-sided routing
by design.
A single authenticated user record with an account_type
enum drives two entirely separate application experiences — enterprise workflow on one side, supplier self-service on the other.
// App.jsx routing logic
— account_type determines experience
Enterprise Routes
/
Enterprise Dashboard
live
/requisitions
Purchase Requests
/events
Sourcing Events
/events/create
5-Step Event Wizard
/events/:id
Event Detail + Bidding
/suppliers
Supplier Management
/timeline
Activity Timeline
/users
Team Management
admin
/onboarding/enterprise
3-Step Company Wizard
new
Supplier Routes
/supplier
Supplier Dashboard
/supplier/profile
Company Profile + Docs
/supplier/products
Product Catalog
/supplier/services
Service Listings
/supplier/invitations
Received RFQs/RFPs
/supplier/bids
Submitted Bids
/onboarding/supplier
4-Step Business Wizard
/supplier/settings
Security & Password

Data Model

9 entities.
One coherent
system.
The data model cleanly separates enterprise-side procurement data from supplier-side account data while connecting them through invite and bid workflows.
SourcingEvent
Core
title, category
string
event_type
RFQ·RFP·Auction
status
lifecycle enum
estimated_value
currency
awarded_supplier_id
FK
single_source_justification
text
approval_required
boolean
Bid
sourcing_event_id
supplier_id
total_amount, currency
decimal
line_items
array
draft·submitted
delivery_terms
Requisition
title, description
requester_id
FK→User
approval enum
approver_id
category
SupplierProfile
New (Phase 1)
legal_name, trade_name
registration_no
unique
categories
documents
cert array
profile_completion_pct
0–100
draft→approved
Enterprise
legal_name
business_registration_no
country_code
ISO 3166
admin_email
email
email_domain
verification
setup·active
User
Enhanced
account_type
enterprise·supplier
enterprise_id
FK (if ent.)
FK (if sup.)
is_account_admin
role
RBAC enum
department
SupplierProduct
category_code
price_per_unit
lead_time_days
int
certifications
is_active
TimelineEntry
Audit
action enum
actor_id
description
is_locked
immutability_hash
hash chain
Supplier
External (Inv.)
company_name
contact_email
country
onboarding_status
enum
approval_status

Serverless Functions

10 backend functions.
Zero infrastructure.
All business logic runs as serverless Base44 functions — triggered by entity events, schedules, or direct API calls. No servers to manage, no deployment pipelines.
enforceEventSoD
Trigger: Approval Workflow
Hard Segregation of Duties — validates the event approver is not the same user who created it. Raises a blocking error if violated.
valueTriggeredApproval
Trigger: SourcingEvent create/update
Automatically flags sourcing events with estimated_value ≥ $25,000 for mandatory approval, routing them into the approval workflow.
lockEventTimeline
Trigger: Status → AWARDED
Generates a cryptographic hash chain across timeline entries when an event is awarded, making the audit trail tamper-evident and immutable.
autoCloseEvents
Trigger: Scheduled hourly
Scans all LIVE sourcing events, identifies those past their end_date, and transitions them to CLOSED status automatically.
exportAuditPack
Trigger: Manual (EventDetail)
Generates a comprehensive PDF audit pack using jsPDF — including event summary, bid comparison, supplier details, timeline, and award decision.
bidSubmissionReceipt
Trigger: Bid entity create
Sends an automatic email confirmation to the supplier on bid submission, with a unique confirmation number, amount, and event details.
notifyMatchingSuppliers
Trigger: Event publish
Notifies suppliers whose category profile matches the sourcing event. Filters by category alignment and eligibility status.
geographyMatchedSupplierNotification
Trigger: Broadcast button
Geography + category filtered supplier broadcast — notifies suppliers matching both the event's category and geographic region for maximum relevance.
notifySuppliers
Trigger: Supplier invite
Sends targeted event invitations to specifically selected suppliers, including event details, deadline, and participation instructions.
initializeNewUser
Trigger: Post-login check
Detects whether a newly authenticated user has completed onboarding. Returns a flag to redirect unregistered users to the appropriate signup wizard.

Tech Stack

Production-grade
open source
tooling.
Frontend Core
React 18
Vite
React Router DOM
TanStack Query
React Hook Form + Zod
UI / Design System
Tailwind CSS
shadcn/ui (Radix)
Lucide React icons
Framer Motion
Recharts
Platform / Backend
Base44 SDK
Base44 Entities
Base44 Auth
Base44 Functions
Serverless Automations
Utilities & Output
jsPDF (audit export)
date-fns / moment
React Leaflet (geo)
React Quill (rich text)
html2canvas

Governance & Compliance

Built for procurement
integrity.
$25K
Value threshold
for mandatory approval
SoD
Hard segregation
of duties enforced
SHA
Hash-chain timeline
immutability on award
PDF
One-click audit
pack export

Build Roadmap

Phased delivery,
clear milestones.
01
✓ Complete
Dual-Sided Platform Architecture
Transformed single-sided enterprise tool into a dual-sided sourcing marketplace. Introduced enterprise and supplier account types, split navigation, landing pages, and the SupplierProfile, Enterprise, SupplierProduct, SupplierService data entities.
Dual account model
Post-login routing
Supplier profile CRUD
Conditional sidebar nav
Profile completion %
02
Signup Wizards & Onboarding
Guided multi-step onboarding wizards for both account types. Enterprise wizard (3 steps: company → contact → review). Supplier wizard (4 steps: business → contact → categories → documents). Auto-creates entities and links users on completion.
EnterpriseOnboarding wizard
SupplierOnboarding wizard
Entity auto-creation
Account type branching
initializeNewUser function
03
→ Next Up
Supplier Features & Product Catalog
Full CRUD for supplier products and services, certificate showcase, supplier invitations page, bid submission interface, bid tracking history, and profile credibility badges.
Products CRUD
Services CRUD
Certificate showcase
Invitation inbox
Bid tracking
04
Planned
Supplier Marketplace & Discovery
Enterprise-facing supplier discovery and search, product/service filtering by category, supplier credibility badges, approval workflow, and supplier ratings post-engagement.
Supplier search
Category filtering
Credibility badges
Rating system
05
Advanced Integrations & Analytics
Webhook integrations for external ERP/SAP systems, supplier performance scorecards, email digests, pricing trend analytics, and multi-stakeholder approval chains.
ERP webhooks
Performance scorecards
Pricing analytics
Multi-stakeholder approval

Get in Touch

Ready to build
procurement software
that governs itself?
BidFlow demonstrates our capability to build complex, enterprise-grade SaaS platforms
from the ground up — dual-sided marketplace logic, RBAC, compliance workflows, serverless automation, and intelligent matching — all delivered in a cohesive, production-ready codebase.
→ Request a Demo
↗ View Live Project

Bid Flow

Built with React · Base44 · Vite · Tailwind CSS · shadcn/ui
Project Profile — 2026

Complete original text content

Bid Flow
Project Case Study — 2026
React
Base44
Vite
Bid Flow Project Case Study — 2026
Procurement · SaaS · B2B Platform
End-to-end
procurement,
live bidding.
A dual-sided sourcing platform that connects enterprise procurement teams with verified suppliers — featuring real-time reverse auctions, compliance-grade audit trails, and intelligent supplier matching.
152
Source files
9
Data entities
10
Backend functions
2
Platform sides
Built on Base44 · React 18 · Tailwind CSS
Enterprise Procurement + Supplier Portal
Overview
A marketplace
built for procurement.
BidFlow is a full-stack SaaS procurement platform built on Base44, designed to digitise and govern the complete sourcing lifecycle — from purchase requisition through supplier evaluation to contract award.
What sets it apart is the dual-sided architecture: enterprise buyers and suppliers each get their own authenticated workspace, tailored navigation, and purpose-built workflows. It's not a single-sided admin tool — it's a procurement marketplace.
The platform enforces Segregation of Duties (SoD) at a code level, automatically routes high-value events through an approval chain, and generates court-admissible audit packs with timeline hash-locking on award.
Platform
Web SaaS (React + Base44)
Account Types
Enterprise · Supplier
Event Types
RFQ · RFP · Reverse Auction
Approval Model
Approval Lite ($25K threshold)
SoD Enforcement
Hard (creator ≠ approver)
Audit Trail
Immutable, hash-chained
Backend Functions
10 serverless functions
Automations
4 active event automations
Dev Stack
React 18 · Vite · Tailwind · shadcn/ui
State Mgmt
TanStack Query · React Hook Form
Build Phase
Phase 2 complete · Phase 3 ready
Core Capabilities
Everything procurement
actually needs.
⚡
Live Bidding
Reverse Auction Engine
Real-time live bidding room with sealed quote management for RFPs. Bid completeness validation ensures every submission is evaluable before closing.
🏗
5-Step Wizard
Event Creation Wizard
Guided sourcing event builder with AI-driven strategy recommendations (RFQ vs reverse auction), intelligent supplier matching, and hard-block launch validation.
🔒
Governance
SoD & Approval Control
Segregation of Duties enforced at the function level — event creators cannot approve their own sourcing events. Value-triggered approval routing above $25,000.
📋
Compliance
Immutable Audit Pack
One-click PDF audit pack export with event summary, bid list, supplier details, timeline, and award decision. Timeline entries hash-locked on event award.
🤝
Dual Sided
Supplier Self-Service Portal
Suppliers manage their own authenticated profile, product catalog, service listings, and document uploads. Profile completion percentage tracked in real-time.
🧠
Intelligence
Smart Supplier Matching
Algorithmic supplier recommendations scored by category alignment (+50), geographic proximity (+100), and eligibility status (+25). Geography-filtered broadcast notifications.
📊
Dashboard
Action-Driven Command Centre
Four live widgets: events closing today, low participation alerts, pending award queue, and top supplier YTD leaderboard — all clickable with direct navigation.
👥
Access Control
Role-Based Access (RBAC)
Enterprise roles: admin, procurement_manager, requester, approver, viewer. User management, team collaboration, and invitation flows within enterprise workspaces.
🔄
Automation
Event Lifecycle Automation
Scheduled auto-close of expired events (hourly), automatic bid receipt emails, approval routing triggers, and timeline immutability events — all serverless.
Architecture
Dual-sided routing
by design.
A single authenticated user record with an account_type
enum drives two entirely separate application experiences — enterprise workflow on one side, supplier self-service on the other.
// App.jsx routing logic
— account_type determines experience
Enterprise Routes
/
Enterprise Dashboard
live
/requisitions
Purchase Requests
/events
Sourcing Events
/events/create
5-Step Event Wizard
/events/:id
Event Detail + Bidding
/suppliers
Supplier Management
/timeline
Activity Timeline
/users
Team Management
admin
/onboarding/enterprise
3-Step Company Wizard
new
Supplier Routes
/supplier
Supplier Dashboard
/supplier/profile
Company Profile + Docs
/supplier/products
Product Catalog
/supplier/services
Service Listings
/supplier/invitations
Received RFQs/RFPs
/supplier/bids
Submitted Bids
/onboarding/supplier
4-Step Business Wizard
/supplier/settings
Security & Password
Data Model
9 entities.
One coherent
system.
The data model cleanly separates enterprise-side procurement data from supplier-side account data while connecting them through invite and bid workflows.
SourcingEvent
Core
title, category
string
event_type
RFQ·RFP·Auction
status
lifecycle enum
estimated_value
currency
awarded_supplier_id
FK
single_source_justification
text
approval_required
boolean
Bid
sourcing_event_id
supplier_id
total_amount, currency
decimal
line_items
array
draft·submitted
delivery_terms
Requisition
title, description
requester_id
FK→User
approval enum
approver_id
category
SupplierProfile
New (Phase 1)
legal_name, trade_name
registration_no
unique
categories
documents
cert array
profile_completion_pct
0–100
draft→approved
Enterprise
legal_name
business_registration_no
country_code
ISO 3166
admin_email
email
email_domain
verification
setup·active
User
Enhanced
account_type
enterprise·supplier
enterprise_id
FK (if ent.)
FK (if sup.)
is_account_admin
role
RBAC enum
department
SupplierProduct
category_code
price_per_unit
lead_time_days
int
certifications
is_active
TimelineEntry
Audit
action enum
actor_id
description
is_locked
immutability_hash
hash chain
Supplier
External (Inv.)
company_name
contact_email
country
onboarding_status
enum
approval_status
Serverless Functions
10 backend functions.
Zero infrastructure.
All business logic runs as serverless Base44 functions — triggered by entity events, schedules, or direct API calls. No servers to manage, no deployment pipelines.
enforceEventSoD
Trigger: Approval Workflow
Hard Segregation of Duties — validates the event approver is not the same user who created it. Raises a blocking error if violated.
valueTriggeredApproval
Trigger: SourcingEvent create/update
Automatically flags sourcing events with estimated_value ≥ $25,000 for mandatory approval, routing them into the approval workflow.
lockEventTimeline
Trigger: Status → AWARDED
Generates a cryptographic hash chain across timeline entries when an event is awarded, making the audit trail tamper-evident and immutable.
autoCloseEvents
Trigger: Scheduled hourly
Scans all LIVE sourcing events, identifies those past their end_date, and transitions them to CLOSED status automatically.
exportAuditPack
Trigger: Manual (EventDetail)
Generates a comprehensive PDF audit pack using jsPDF — including event summary, bid comparison, supplier details, timeline, and award decision.
bidSubmissionReceipt
Trigger: Bid entity create
Sends an automatic email confirmation to the supplier on bid submission, with a unique confirmation number, amount, and event details.
notifyMatchingSuppliers
Trigger: Event publish
Notifies suppliers whose category profile matches the sourcing event. Filters by category alignment and eligibility status.
geographyMatchedSupplierNotification
Trigger: Broadcast button
Geography + category filtered supplier broadcast — notifies suppliers matching both the event's category and geographic region for maximum relevance.
notifySuppliers
Trigger: Supplier invite
Sends targeted event invitations to specifically selected suppliers, including event details, deadline, and participation instructions.
initializeNewUser
Trigger: Post-login check
Detects whether a newly authenticated user has completed onboarding. Returns a flag to redirect unregistered users to the appropriate signup wizard.
Tech Stack
Production-grade
open source
tooling.
Frontend Core
React 18
React Router DOM
TanStack Query
React Hook Form + Zod
UI / Design System
Tailwind CSS
shadcn/ui (Radix)
Lucide React icons
Framer Motion
Recharts
Platform / Backend
Base44 SDK
Base44 Entities
Base44 Auth
Base44 Functions
Serverless Automations
Utilities & Output
jsPDF (audit export)
date-fns / moment
React Leaflet (geo)
React Quill (rich text)
html2canvas
Governance & Compliance
Built for procurement
integrity.
$25K
Value threshold
for mandatory approval
SoD
Hard segregation
of duties enforced
SHA
Hash-chain timeline
immutability on award
PDF
One-click audit
pack export
Build Roadmap
Phased delivery,
clear milestones.
01
✓ Complete
Dual-Sided Platform Architecture
Transformed single-sided enterprise tool into a dual-sided sourcing marketplace. Introduced enterprise and supplier account types, split navigation, landing pages, and the SupplierProfile, Enterprise, SupplierProduct, SupplierService data entities.
Dual account model
Post-login routing
Supplier profile CRUD
Conditional sidebar nav
Profile completion %
02
Signup Wizards & Onboarding
Guided multi-step onboarding wizards for both account types. Enterprise wizard (3 steps: company → contact → review). Supplier wizard (4 steps: business → contact → categories → documents). Auto-creates entities and links users on completion.
EnterpriseOnboarding wizard
SupplierOnboarding wizard
Entity auto-creation
Account type branching
initializeNewUser function
03
→ Next Up
Supplier Features & Product Catalog
Full CRUD for supplier products and services, certificate showcase, supplier invitations page, bid submission interface, bid tracking history, and profile credibility badges.
Products CRUD
Services CRUD
Certificate showcase
Invitation inbox
Bid tracking
04
Planned
Supplier Marketplace & Discovery
Enterprise-facing supplier discovery and search, product/service filtering by category, supplier credibility badges, approval workflow, and supplier ratings post-engagement.
Supplier search
Category filtering
Credibility badges
Rating system
05
Advanced Integrations & Analytics
Webhook integrations for external ERP/SAP systems, supplier performance scorecards, email digests, pricing trend analytics, and multi-stakeholder approval chains.
ERP webhooks
Performance scorecards
Pricing analytics
Multi-stakeholder approval
Get in Touch
Ready to build
procurement software
that governs itself?
BidFlow demonstrates our capability to build complex, enterprise-grade SaaS platforms
from the ground up — dual-sided marketplace logic, RBAC, compliance workflows, serverless automation, and intelligent matching — all delivered in a cohesive, production-ready codebase.
→ Request a Demo
↗ View Live Project
Built with React · Base44 · Vite · Tailwind CSS · shadcn/ui
Project Profile — 2026