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Functional Analyst Digital

  • Luminus
Brussels, Belgium
  • Luminus
Brussels, Belgium

In order to adapt to the changing Belgian & European energy market design, Luminus is on a transformation journey to renew the IT landscape with the implementation of new applications and the improvement of existing applications and integrations.

As a Solution Designer you will be accountable for converting the business requirements & solution architecture into a pragmatic, affordable and future proof solution design, adhering to our architectural principles and security policies. You are able to quantify the designed solution into a feasible workload.


As a solution designer, you become part of an Agile team where you add value in 3 different ways:

Delivery & release train build activities

  • You are accountable for estimating the effort and time required for solution design, configuration, implementation and unit/integration testing;

  • You are accountable & responsible for creating, documenting & communicating the solution design;

  • You are responsible to ensure the solution design adheres to the solution principles, IT & security policies and standards, guidelines and best practices;

  • You evaluate the feasibility of the different solutions always keeping in mind the affordability, fit-for-purpose and value for money;

  • You are accountable for the solution quality control by reviewing and approval of solution documentation, configuration, implementation and testing;

  • You provide the necessary input in case there are dependencies with other changes;

  • You understand the TCO (Total Cost of Ownership) drivers and contribute to keep their evolution under control.


  • You identify & propose improvements to the solution design of the existing landscape;

  • You are able to provide guidance to operational support;

  • You are accountable within your domain as the subject matter expert of the solutions and have a good understanding on the E2E processes;

  • You support the solution lifecycle.


  • You collaborate closely with the Solution Architect to ensure the solution design adheres to the overall solution architecture;

  • You support the Solution Architect and the Business Engagement team during intake;

  • You provide expert advice within your domain and advise stakeholders on how to best align business processes and solutions;

  • You organize regular knowledge transfer of solution specifics and changes towards the team;

  • You coach other Solution Designers/Engineers/Developpers within your domain where needed;

  • You are responsible for supporting the technical team in their technical analysis and design.


  • You hold a master's or bachelor's degree in exact sciences (preferably in IT) or possess equivalent experience;

  • You have a proven track record of designing and implementing successful functional solutions;

  • You have worked for at least 3 years in a solution designer role;

  • You can read, understand, and critically evaluate solution architectures and the underlying business requirements. You apply functional analysis and design thinking to create solutions that align with business needs and architectural frameworks;

  • You leverage reusability to develop the most effective solution designs;

  • You are fluent in expressing ideas through data models, state diagrams, sequence diagrams, and other artifacts, as well as in clear, natural language (English);

  • You can discuss and explain solution designs to both technical (e.g., developers) and non-technical (e.g., product owners) stakeholders;

  • You have a good understanding of MACH architecture principles;

  • You understand the technologies, key properties, limitations, and design patterns used in building solutions, including Cloud deployments, DevOps, and databases (both NoSQL and SQL). Experience with Azure Cloud is a plus;

  • You have basic experience with the following languages and frameworks: React (Native), NextJS, NestJS, TypeScript, and JavaScript;

  • You are proficient in using UML to elaborate on solution design documentation;

  • You can understand data architecture within your domain;

  • You have strong listening, facilitation, influencing and analytical skills;

  • You have strong communication skills towards the business & IT counterparts;

  • You are able to understand and discuss Business needs (users), facilitating pragmatic & affordable solutions;

  • You are able to work autonomously while being a team player in a fast-paced, dynamic environment;

  • You have good collaboration/interaction skills to optimize the flow between design & development;

  • You are eager to work in the core business of Digital and be part of a significant transformation journey to shape the future IT landscape;

  • You are a fast learner;

  • You are business proficient in English and at least in Dutch or French.

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