Billing System Engineer – Comarch BSS

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InPost Group

WebsiteLinkedInAll Job Openings

10,000+ employees

🛍️ eCommerce

🚗 Transport

eCommerce • Transport • Logistics

InPost Group is Europe's leading e-commerce enablement platform, specializing in out-of-home delivery services. Founded in 1999 by CEO Rafal Brzoska, InPost provides cost-effective and environmentally friendly delivery solutions through a robust network of Automated Parcel Machines (APMs) and courier services. The company also offers pick-up drop-off (PUDO) services, enhancing convenience and efficiency for e-commerce merchants across Europe. InPost is committed to sustainability, reducing carbon emissions significantly in its delivery processes. With operations in countries like Poland, France, Benelux, the UK, and Italy, InPost continues to expand its innovative technology solutions to drive long-term growth in the e-commerce sector.

📋 Description

• Maintain and develop Comarch BSS (Product Catalog, Billing, Billing Mediation): configuration, updates, performance monitoring, and incident resolution • Monitor system processes, analyze logs, identify and resolve data and runtime issues • Ensure stability and continuity of system integrations and interfaces across the billing ecosystem • Manage backups, data recovery processes, and system availability and resilience • Take technical ownership of the billing system after deployments and during ongoing operations • Cooperate with infrastructure and security teams to ensure compliance with audit and security requirements • Track the BSS roadmap, run Proofs of Concept, and maintain high‑quality technical documentation

🎯 Requirements

• 3+ years of experience working with Comarch BSS (Product Catalog, Billing, Billing Mediation) • 2+ years of experience with SQL for data analysis and troubleshooting • Experience in enterprise system integrations and familiarity with integration tools • Knowledge of billing processes (invoicing, rating, usage‑based billing) • Good knowledge of Linux, REST API testing, Apache Kafka, and databases such as Oracle / PostgreSQL / Elasticsearch • Active use of AI tools (e.g. ChatGPT, GitHub Copilot) for log analysis, SQL optimization, documentation, and initial problem diagnosis • English at B2 level or higher

🏖️ Benefits

• High ownership and real influence on system stability and development • Collaboration with experienced product, data, infrastructure, and security teams • A technology environment open to AI‑supported ways of working • Strong engineering culture within a fast‑growing international organization.