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Project Manager Sustainability & Energy Efficiency

--Brussels/hybrid--


  • Type: permanent contract (CDI)
  • Start date: Q1 2026
  • Location: Brussels/Hybrid


Why Klareco ? 

At Klareco, we're a fast-growing startup on a mission to accelerate the energy transition. We simplify energy management for businesses through innovative & data-driven solutions.

We work with major real estate players and help them take the lead in sustainability. If you're eager to learn, grow, and make a real impact in a company that values initiative, creativity, and excellence, this is your place.


Why this role is exciting

  • You join a dynamic & ambitious team where proactivity and responsibility are key.
  • You shape your role as you grow. Your strengths and ideas will actively influence your path.
  • You have a flexible working package of on-site projects, office (modern coworking spaces (Silversquare) and remote work.


Your mission

  • End-to-end project management: Take ownership of client projects, from identifying needs to implementing solutions, coordinating stakeholders, and ensuring effective follow-up.
  • Drive sustainability initiatives: Deliver energy and sustainability certifications (e.g., BREEAM, ISO 50001), develop decarbonization strategies, and support the implementation of energy-efficiency measures.
  • Optimize tools and processes: Develop methods and tools for project tracking, reporting, and internal processes to enhance efficiency and impact.


What makes you a strong fit

  • Master's degree in Business, Industrial, Civil or Bio-engineering
  • 3-5 years of relevant experience in sustainability, energy management, or a technical consulting environment.
  • Understanding of technical building installations (HVAC, lighting, etc.).
  • Communication skills, both written and spoken, in French and Dutch; strong proficiency in English.
  • Skilled in project management, structured working, and stakeholder coordination.
  • Autonomous, well-organized, proactive & rigorous.


Hiring process

  • First meeting with the founders: confirm culture & ambitions.
  • Technical assessment: test your technical knowledge & know-how.
  • Offer: join and start making an impact.


Ready to apply ?

If this sounds like your next challenge, send your CV and a short motivational letter to info@klareco.be.

We review every application personally and aim to reply within 10 days.


Life at Klareco

Life at Klareco is fast-paced, collaborative, and full of energy. We work hard, support each other, and celebrate our wins together. From animated team lunches and sports activities to a growing, ambitious team, every day offers opportunities to learn, connect, and make an impact.