Delivery & Billing Platform Engineer; UMAX

At Eneco, we are committed to becoming climate-neutral by 2035. Our Digital & Tech organisation builds the platforms that make smarter pricing, complex billing, portfolio management, and energy-as-a-service solutions possible.

UMAX
365 is a key part of that backbone. As part of the Delivery & Billing team, you help enhance and stabilise the processes that serve thousands of business customers across the Netherlands.

As a Utility Billing Platform Engineer (UMAX
365), you configure, optimise, and extend UMAX
365 to support Eneco’s B2B contract, billing, and metering processes. You work closely with product management, developers, billing operations, and business stakeholders to translate requirements into scalable, reliable platform solutions.

You bring structure, ownership, and a solution-oriented mindset to a domain where accuracy and stability are essential.

• Configuring and maintaining UMAX
  365 modules across contract management, pricing, metering, and billing.
• Designing and executing billing scenarios, tariff configurations, and end-to-end meter-to-cash process changes.
• Supporting integrations with DSO systems, metering platforms, CRM, and Dynamics 365 Finance.
• Managing UMAX batch jobs, monitoring billing performance, and resolving operational incidents.
• Creating functional specifications for enhancements, extensions, and new features in collaboration with development teams.
• Translating business requirements into platform-aligned UMAX configurations and testable solutions.
• Troubleshooting UMAX-D365 interactions, data issues, and workflow bottlenecks.
• Maintaining clear documentation and contributing to UMAX release planning, regression testing, and continuous improvement.

• Experience with D365 F&O concepts such as data entities, batch jobs, integrations, and posting flows.
• Ability to translate business requirements into UMAX
  365 configurations and testable functional designs.
• Strong analytical and troubleshooting skills, especially in high-volume or regulated environments.

• Experience with UMAX
  365 or another utility billing or meter-to-cash platform (SAP IS-U, Oracle Utilities, etc.).
• Strong understanding of billing cycles, tariffs, metering data, contract structures, or energy-market processes.
• Experience working with Azure Dev Ops, LCS, or similar platform-engineering tools.
• Exposure to scripting or automation within the UMAX or D365 ecosystem.
• Experience in the energy or utilities sector (supplier, DSO, B2B energy services).
• Affinity with data quality, validation, and reconciliation processes.

You’ll join the Enterprise Platform Solutions team within Digital & Tech. The team consists of platform engineers, functional consultants, and product specialists working together to build, stabilise, and scale the systems behind our B2B energy propositions.

Work hybrid: focus days at home, collaboration days at the Rotterdam headquarters. For this position it's important to work and live in The Netherlands already.

Depending on your knowledge, experience, and skill set, this role can be positioned at different levels within our job and salary framework.

Please apply directly via our careers website. Applications via email will not be considered.

• Build digital solutions on one of Eneco’s most critical enterprise platforms powering the energy transition.
• Shape and optimise high-volume billing, contract, and metering processes underpinning Eneco’s B2B energy propositions.
• Collaborate in a high-performing engineering team where your UMAX expertise directly accelerates innovation and operational excellence.