Simple System

The NextGen of simple system - transforming a 20‑year‑old e‑procurement platform

  • Client:simple system GmbH
  • Year:2021 → ongoing
  • Industry:Online procurement
  • Scope:
    • Production System Migration
    • System Architecture
    • MVP Validation
    • Engineering Culture Overhaul
    • End-to-End Solution Design
    • UI / UX Design
    • React.js Development
    • Java Development
    • Kotlin Development
    • Project Management
    • DevOps

Intro

Simple System

Simple System is an established Munich-based B2B e-procurement platform that streamlines indirect purchasing by connecting over 1,500 companies with 850+ suppliers through a centralized, vendor-neutral system. The platform offers seamless ERP integration, customizable workflows, and access to more than 80 million products, helping businesses reduce procurement complexity, cut process costs, and enhance supply chain transparency.

Project Timeline

  • 2021
    Oct

    Conducted due diligence on the existing solution

  • 2022
    May

    Launched the MVP for the first batch of customers

  • 2024
    Aug

    Migrated all existing customers to the new platform

  • 2025
    Feb

    Reshaped the platform into a SaaS solution

The challenge

After two decades as a procurement leader, Simple System faced the limits of its exisiting architecture.

Development cycles were slow, innovation was constrained, and the platform struggled to keep pace with evolving customer needs. As buyer and supplier demands became more complex, staying competitive required more than incremental updates - it called for a fundamental shift. Simple System needed a future-ready foundation: faster delivery cycles, scalable architecture, and a flexible product model to support modern B2B procurement at scale.

MVP

From legacy to MVP in under 6 months

In 2021, Simple System partnered with YND to define a clear path from their legacy e-procurement platform to a future-ready solution.

  • We audited the 20-year-old system technical solution and operational processes
  • We redefined core procurement workflows with modern UX principles
  • We delivered a lean, enterprise-grade MVP validated with pilot buyers
  • We built a scalable foundation to support phased migration and expansion

Release highlight:

Within 24 months, Simple System fully moved to the NextGen platform and completed the staged migration of 1,500 companies - seamlessly.

The rollout also marked a major shift in engineering culture, unlocking faster iteration cycles, cross-team collaboration, and scalable product delivery - laying the foundation for exciting new features.

Highlights

Leading the transformation and zero-downtime migration to a highly scalable NextGen Platform

  • Sharp Scoping, Fast Launch

    Distilled years of platform complexity into a lean, launch-ready MVP—delivered in months and designed to enable smooth customer migration.

  • Scalable MVP

    Identified key features to launch a new platform MVP capable of handling a massive amount of data 100M+ articles , 400M+offers, 1.5B and updating them daily

  • Seamless Vendor Switch

    Effortless ERP integrations, catalog processing, configurable SEO and price indexing for a frictionless vendor transition.

  • Engineering Reboot

    Transformed a 20-person dev team into an agile setup shipping in tight feedback loops. Outcome orientation, pragmatism, and strong cross-domain collaboration became the core tenets of this shift.

  • Seamless Migration

    Phased transition of 1,500 companies to NextGen with zero downtime and no business disruption.

  • Business Model Shift

    Enabled a modern, multi-tier subscription model - laying the groundwork for recurring revenue.

Features

Enterprise Control & Automation Suite

Smart Budgeting

Set budgets by account, catalog, or product with automated ledger mapping and real-time compliance tracking.

Plug-and-Play ERP Support

Seamlessly connects to SAP, Microsoft Dynamics, and more with PunchOut, Cockpit, and custom ERP hooks.

Automated Vending Machine Replenishment

Stock depletion triggers restocking order - fully integrated with budgets, accounting, and approvals.

Role-Based Catalog Views

Assortment restrictions ensure users see only what they’re allowed to buy - no clutter, full control.

Single Sign-On Simplicity

Fully configurable SSO integration keeps authentication secure, centralized, and compliant with Client's IT policies.

Flexible Approval Flows

Multi-tiered approval logic driven by cart value, product type, or accounting rules - configurable to any organisation.

Live Vendor Catalogs

Prices can be fetched real-time from external systems. OCI integration facilitates cross-system shopping sessions.

Modular SaaS, Tailored for B2B

From free trials to advanced modules - Simple System adapts to teams of any size with flexible subscription tiers.

Outcome

“Working with YND has been a true partnership. YND didn’t just build software, they helped us future-proof our business. From day one, they understood the complexity of our domain and brought clarity, design excellence, and technical leadership to the table. Together, we transformed a legacy platform into a high-performing SaaS product that now handles millions of data points daily and supports our entire B2B ecosystem without a hiccup.”

Michael Petri
Managing DirectorSimple System GmbH

Summary

  • 60 000+
    users
    and ~1,000 vendors migrated with zero business disruption
  • 3 000+
    daily orders
    processed seamlessly during transition
  • 6
    months
    to validate and deliver the MVP
  • 24
    months
    to fully complete platform migration
  • 99.9%
    uptime
    across a 24/7 mission-critical platform
  • Leading
    DACH region
    The SaaS-enabled platform reinforced the company's position as a leading eProcurement provider in the DACH region.
  • Next Up
    AI
    With a solid foundation in place, the team is now focused on transforming eProcurement with new AI features.

Work with our experienced team to develop a customized software solution tailor made for your business needs.

Contact us