3 days ago Be among the first 25 applicantsDirect message the job poster from ShakersThe 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.We are looking for a Junior / Mid-level Java Developer with experience or strong exposure to billing and invoicing logic.Technical RequirementsStrong experience with Java and Spring frameworkExperience with Kill Bill platform or similar billing systemsSolid knowledge of software design patterns and principles (MVC, SOLID, OOP)Experience in billing / invoicing domainsKnowledge of PythonExperience with DevOps tools (GitLab, Jenkins or similar)Understanding of accounting concepts (invoicing, credit notes, VAT, value dates, etc.)Knowledge of payment protocols and circuits (SEPA, credit cards, etc.)Team-oriented mindset and ability to collaborate effectivelyStrong problem-solving skills and ability to assess solution feasibilityAbility to analyze large datasetsStart: ASAPDuration: 6 months (extension possible)Location: Bologna – 3 days onsite per weekSeniority LevelMid-Senior levelEmployment TypeFull‑timeJob FunctionJAVA DEVELOPER
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