Angular NestJS Firestore FirebaseDec 2025

Sosympl

Swiss business management ecosystem with 5 Angular micro-frontends, NestJS API, Firestore, and integrated billing, project management, and offer systems.

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Overview

Sosympl is a multi-app Swiss business management ecosystem designed for SMEs. The platform consists of 5 dedicated Angular micro-frontends — project management with billing, offers & quotes, admin panel, authentication/OAuth portal, and a public marketing website — all powered by a NestJS backend with modules for organizations, user management, statistics, and OAuth. Built on Firestore for real-time data sync and Firebase Cloud Functions for event-driven processing, the system includes Stripe-integrated payment webhooks, multi-tenant organization management, and Swiss-compliant invoicing with QR-bill generation.

Challenge

Swiss SMEs needed a unified platform to replace fragmented tools for billing, project management, offers, and client administration — with strict Swiss data compliance and QR-bill requirements.

Results

Reduced admin overhead by 60%, processing CHF 5M+ in monthly transactions across 500+ businesses with 99.95% uptime.

500+

Active businesses

CHF 5M+

Monthly transactions

99.95%

Uptime

4.8★

User satisfaction

Key Highlights

5 Angular micro-frontends: projects, offers, admin, auth, website

NestJS API with organization, user management & statistics modules

Stripe payment webhooks with real-time transaction processing

Firebase Cloud Functions for event-driven invoice processing

Architecture

5 Angular micro-frontends with shared component libraries and routing modules

NestJS API with modular architecture: organizations, user-management, statistics, OAuth, conditions

Firestore for real-time multi-tenant data with tenant-level isolation and encryption

Firebase Cloud Functions for event-driven processing, Stripe payment webhooks for transaction handling

Timeline

Discovery & Architecture

6 weeks

Multi-app architecture design, NestJS API modules, Firestore schema, OAuth flow

Core Apps

12 weeks

Project management, billing engine, offers/quotes system, admin panel

Payments & Reporting

8 weeks

Stripe webhook integration, Cloud Functions, analytics dashboard, QR-bill generation

Launch & Optimization

6 weeks

Beta testing with 50 SMEs, performance tuning, production rollout

“We had 5 different tools duct-taped together and nothing talked to each other. Devube built us a single platform that replaced all of them. Our clients actually enjoy doing admin work now — never thought I'd say that.”

Marc S.

CEO, Sosympl AG