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.




