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B2B SaaS for payroll cost optimisation

A comprehensive B2B SaaS product that optimises payroll costs through subsidies and salary components - with sensitive data, complex calculation logic and multi-tenancy.

live#8551725LohnLab2025
SaaS & Platform BuildProduct Growth Partner
LohnLab - B2B SaaS for payroll cost optimisation
✓Next.js✓TypeScript✓Supabase✓PostgreSQL✓DATEV

DATEV

import & live API sync

15+

salary components optimised

n×

tenants on one platform

01

Starting point

LohnLab digitises payroll cost optimisation through subsidies and salary components - a domain with sensitive data, complex calculation logic and demanding role and permission requirements. Often-vague product ideas needed a clear technical structure.

02

Approach

We structured the domain logic technically, prioritised it and delivered step by step: multi-tenancy enforced with row-level security in the database, a role model with 24 granular permissions, DATEV imports plus live API sync through a dedicated provider-neutral integration gateway (DATEV, ADDISON), an optimisation engine covering 15+ salary components, dynamic PDF generation and e-signing through LohnLab's own e-sign platform.

03

Result

A product built for long-term evolution, backed by 1,400+ automated tests. We support LohnLab beyond delivery - with technical structuring, prioritisation and ongoing product development.

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