Java Developer; Billing Systems

Position: Java Developer (Billing Systems)
Bologna (Hybrid – 3 days onsite)
⏳  6-month project + renewal  |   Start ASAP

Project Overview
The project focuses on building a  scalable and modular billing & invoicing system  for enterprise environments.
The platform will manage cost calculation, invoice generation and payment collection, covering the full billing lifecycle — from transaction data ingestion to fiscal document generation — handling  high data volumes and complex business logic , following strong modularity and separation-of-concerns principles.

Role
We are looking for a  Junior / Mid-level Java Developer  with experience or strong exposure to  billing and invoicing logic .
✅ Mandatory Technical Skills
Strong experience with  Java  and  Spring framework

Experience with  Kill Bill platform  or similar billing systems
Solid knowledge of  software design patterns and principles  (MVC, SOLID, OOP)
Strong  SQL  skills

➕ Nice to Have
Experience in  billing / invoicing domains
Web application development
Knowledge of  Python

Experience with  Dev Ops tools  (Git Lab, Jenkins or similar)
Understanding of  accounting concepts  (invoicing, credit notes, VAT, value dates, etc.)
Knowledge of  payment protocols and circuits  (SEPA, credit cards, etc.)

Soft Skills
Team-oriented mindset and ability to collaborate effectively
Strong problem-solving skills and ability to assess solution feasibility
Ability to analyze  large datasets

Project Details
Start:  ASAP
Duration:  6 months (extension possible)

Location:

Bologna –  3 days onsite per week