Billing System Engineer (Comarch BSS / SQL / Kafka)

Hello, We are called People More because we treat our employees with respect, but also because the projects we work on are for people and should be easy and pleasant to use. We are technological, but we look at the bigger picture :) The company is made up of people with a huge client base in the country and abroad, for whom we build projects from scratch (UX, UI, frontend, backend, mobile) or in part. We work directly for our clients and also support our partners in their own solutions. This ensures a wide range of projects and the ability to change! We work with clients all over the world. For the project that we are working on with our partner, we are looking for Billing System Engineer (Comarch BSS / SQL / Kafka).

Your duties will include

• Maintain and configure the Comarch BSS platform, particularly Product Catalog, Billing and Billing Mediation
• Monitor platform performance, system jobs, error logs and runtime incidents.
• Investigate data inconsistencies, troubleshoot technical issues and perform root cause analysis.
• Monitor system interfaces and integrations to ensure reliable end-to-end data flows.
• Support backup and recovery processes to ensure system stability and availability.
• Configure data connections and integrations, taking technical ownership after implementation.
• Support audit controls, security requirements and compliance-related activities.
• Contribute to platform upgrades, patches and the implementation of new functionalities.
• Run Proofs of Concept (PoCs), follow the BSS roadmap and maintain technical documentation.
• Use AI tools to support log analysis, SQL query optimisation, documentation and troubleshooting.

Requirements that must be met

• At least 3 years of hands-on experience with Comarch BSS, particularly Product Catalog, Billing or Billing Mediation.
• Strong practical knowledge of SQL, including data analysis, record tracing and troubleshooting.
• At least 2 years of experience with enterprise system integrations and integration tools.
• Good understanding of billing processes, including invoicing, rating and usage-based billing.
• Experience working with Oracle or PostgreSQL databases and Elasticsearch.
• Practical experience with Linux, REST API testing and Apache Kafka.
• Experience troubleshooting complex system issues and analysing integration failures.
• Familiarity with AI tools such as ChatGPT, Claude or GitHub Copilot and their practical application in everyday engineering work.
• Very good English and Polish

What we offer

• We are open and honest and we solve problems instead of generating them.
• Maybe it’s obvious, but we really respect our employees and associates. We used to be software developers, too, and we appreciate that job!
• A small team
• An international working environment and international projects
• Private medical care
• Sports card
• Training courses
• Hybrid work

Why it’s a good idea to work with People More?

• If you are not satisfied with your work or your tasks, we’ll find a way out together!
• If you get bored, we will offer you a new product and new, fascinating tasks
• We will work on your brand together: you will get an opportunity to attend conferences, including as a speaker, and we will help you publish in recognized magazines and online
• We will facilitate your access to challenges that are usually difficult to get
• At any time, you can talk directly to the board of People More-we talk your language because the company’s founders are software developers and designers!

What does the recruitment process look like?

• A friendly remote initial interview
• A remote technical talk
• The decision to work together!