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IT, Data & Digital

AI & ML Engineer

IT, Data & Digital

Turning data into intelligent solutions and algorithms into real-world impact.As an AI/ML Engineer, you bring AI to life : designing, building and optimizing intelligent applications that truly serve end users. You develop GenAI features, craft robust backend systems and APIs and collaborate with data and ML engineers to scale impactful models. You make sure our AI runs smoothly, stays cost-efficient and keep pushing the boundaries by experimenting with new capabilities that shape our customer facing gen AI roadmap.What you’ll do

  • Using LLMs like OpenAI or open-source models, you build GenAI agents, workflows and backend services.
  • You align AI capabilities with real business value and user needs.
  • You translate customer pain points into smart, scalable technical solutions.
  • Implementing guardrails and fallback mechanisms, you optimize for cost, speed and stability.
  • You collaborate with Data/ML Engineers, frontend, QA and product teams across the full AI lifecycle.
  • You share best practices through internal libraries, design patterns and Luminus’ Data & AI Community.

 

What you bring

  • You have strong programming skills in Python and experience with frameworks like FastAPI or Flask.
  • You bring hands-on experience with LLMs, prompt engineering, RAG and model evaluation.
  • You’re comfortable working with APIs, cloud services and DevOps pipelines.
  • You have a sharp analytical mindset with a focus on robustness and maintainability.
  • You communicate clearly and collaborate with ease.
  • Fluent English is required. Fluency in Dutch is preferred to strengthen team complementarity; French is an additional advantage.

Why join us

  • You will be part of a company that drives key changes towards a more sustainable and energy-efficient society.
  • You join a team of motivated people with diverse and strong skills, offering you real opportunities to grow and learn.
  • You take ownership of projects and make a real impact by defining not just how we do things, but also what we should do.
  • You work from home or in a Luminus hub. Nine-to-five, or not? There are options to make your schedule work for you.

 

What you’ll get in return?

 

The energy sector is one of the most rewarding industries in Belgium with a highly rewarding compensation and benefits package:  

  • Competitive compensation: Attractive salary with a performance-based bonus that can be optimized to your personal preferences, plus meal vouchers.
  • Insurance & social benefits: Group insurance and hospitalization coverage for the entire family. Additional reimbursement for healthcare and pharmaceutical costs.
  • Mobility: Full reimbursement for public transport, kilometer-based cycling reimbursement and flexible mobility choices: you can choose between a company car or mobility budget.
  • Internet & communication: Home internet covered, reimbursement for a personal mobile device with a phone subscription.
  • Home Office: A fully-equipped home office, including an ergonomical ICT set-up.
  • Exclusive discounts: 30% off gas and electricity after six months, discounts on energy-saving services (e.g., solar panels, heat pumps) and reduced prices on top brands, amusement parks, festivals and more.

 

 

Curious about your benefits and more? Visit our jobsite.

 

 

 

Luminus values e.v.e.r.y individual.

Are you looking for a workplace where you can truly be yourself, where you feel respected, supported regardless of your background, identity and unique story?  Then you’ve come to the right place. Diversity equity and inclusion are not empty words for us — we grant that everyone can flourish and feel valued, so let’s build it together!

 

What does that mean in practice?

Do you have specific needs or require adjustments during the recruitment process or once you are hired? Let’s discuss about it and we’ll do our best to find a solution. We can also discuss if you want to work at 80% or 100%.

 

Together we make the difference

Brussels

Contract open-end

Solution Architect Digital

IT, Data & Digital

Shape the future of digital energy at Luminus

As a Digital Solution Architect, you translate complex business needs into smart, scalable and future‑proof digital solutions. You bridge strategy and execution, bringing cutting-edge technologies, MACH principles and modern architectures to life across our digital landscape.

 

What you’ll do
  • You deliver solution models and architectures that fit business requirements and maximise value.
  • You collaborate closely with stakeholders to understand needs, challenge assumptions and propose the most effective, budget‑aligned solutions.
  • You assess change requests and evaluate their impact on our existing architecture.
  • You build and evolve our digital architectural vision and roadmap.
  • You guide technology choices and support development teams in applying standards and best practices.
  • You ensure architectural compliance, clear documentation and alignment with Enterprise Architecture and security guidelines.
 
What you bring
  • You hold a master’s or bachelor’s degree in exact sciences (preferably IT) or equivalent experience.
  • You have at least 3 years’ experience as a Solution Architect in a digital environment (web & mobile).
  • You understand MACH principles and can design solutions based on microservices, API‑first and cloud‑native SaaS.
  • You are fluent in data, state and sequence diagrams and can communicate architecture clearly to technical and non‑technical stakeholders.
  • You have hands‑on experience with React(Native), NextJS, NestJS, TypeScript, JavaScript, and cloud deployments (Azure is a plus).
  • You bring strong analytical, facilitation and influencing skills and enjoy working in Agile/SAFe environments.
 
Why join us
  • You help shape a modern, future‑ready digital ecosystem at the core of Luminus’ transformation.
  • You work with passionate teams, innovative technologies and real architectural impact.
  • You grow your expertise in a dynamic, supportive environment that values autonomy, collaboration and continuous learning.

 

What you'll get in return ?

The energy sector is one of the most rewarding industries in Belgium with a highly rewarding compensation and benefits package:

  • Competitive compensation: Attractive salary with a performance-based bonus that can be optimized to your personal preferences, plus meal vouchers.
  • Insurance & social benefits: Group insurance and hospitalization coverage for the entire family. Additional reimbursement for healthcare and pharmaceutical costs.
  • Mobility: Full reimbursement for public transport, kilometer-based cycling reimbursement and flexible mobility choices: you can choose between a company car or mobility budget. 
  • Internet & communication: Home internet covered, reimbursement for a personal mobile device with a phone subscription.
  • Home Office: A fully-equipped home office, including an ergonomical ICT set-up.
  • Exclusive discounts: 30% off gas and electricity after six months, discounts on energy-saving services (e.g., solar panels, heat pumps) and reduced prices on top brands, amusement parks, festivals and more.

 

 

Luminus values e.v.e.r.y individual.

Are you looking for a workplace where you can truly be yourself, where you feel respected, supported regardless of your background, identity and unique story?  Then you’ve come to the right place. Diversity equity and inclusion are not empty words for us — we grant that everyone can flourish and feel valued, so let’s build it together!

What does that mean in practice?

Do you have specific needs or require adjustments during the recruitment process or once you are hired? Let’s discuss about it and we’ll do our best to find a solution. We can also discuss if you want to work at 80% or 100%.

Together we make the difference

 

 

Curious about your benefits and more? Visit our jobsite.

Brussels

Contract open-end

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