Billing System Engineer Comarch BSS

We are looking for a Billing System Engineer to support and develop our billing platform (Comarch BSS) across the InPost this role you will be responsible for the stability configuration and continuous operation of billing systems ensuring reliable endtoend data flows and supporting system expansion across European markets.

You will work closely with product infrastructure security CRM and data teams as well as external vendors translating complex technical topics into clear actionable solutions.

What you will do

• 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 highquality technical documentation.

Qualifications :

• 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 usagebased 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.

Nice to have

• Experience with enterprise systems such as CRM ERP data warehouses or event streaming platforms.
• Knowledge of Apache Cassandra and Kubernetes.
• Experience with prompt engineering and automating operational tasks using AI tools.

What matters to us

• Strong analytical thinking and structured problemsolving.
• High attention to detail especially in billing and financialimpacting systems.
• Ability to manage priorities and work effectively with multiple stakeholders.
• Clear and confident technical communication with both technical and business partners.
• Proactivity ownership and willingness to continuously learn.

Additional Information :

Why join InPost Technology

• You will work on businesscritical billing systems used across multiple European markets.
• High ownership and real influence on system stability and development.
• Collaboration with experienced product data infrastructure and security teams.
• A technology environment open to AIsupported ways of working.
• Strong engineering culture within a fastgrowing international organization.

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Remote Work :

Yes

Employment Type :

Full-time