Senior HVAC Energy Optimisation Engineer

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DABBEL AI

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Düsseldorf, Germany

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Senior HVAC Energy Optimisation Engineer (all genders, full-time, Düsseldorf)

Help decarbonise buildings with AI and advanced HVAC optimisation

Join DABBEL and help shape the future of building operations

DABBEL is a climate tech company on a mission to decarbonise buildings worldwide.

Our AI-powered software helps commercial and industrial buildings reduce energy consumption, lower CO₂ emissions, and improve operational performance by optimising HVAC systems through predictive control and intelligent automation.

We are not a traditional engineering company. We combine HVAC expertise, software, data analytics, and artificial intelligence to create measurable impact for our customers.

We are looking for a Senior HVAC Energy Optimisation Engineer who wants to apply their technical expertise to real-world energy challenges and help customers achieve significant reductions in energy use and carbon emissions.

This role is ideal for someone with a strong HVAC background who enjoys solving operational problems, working directly with customers, and turning technical insights into measurable results.

Your Mission

  • As a Senior HVAC Energy Optimisation Engineer at DABBEL, you will work directly with customers to improve building performance and reduce energy consumption.
  • You will analyse HVAC systems, identify optimisation opportunities, support implementations, validate performance improvements, and help customers achieve their sustainability and operational goals.
  • You will act as a trusted technical expert, working closely with facility managers, building operators, system integrators, and internal teams to ensure successful optimisation projects.

What You Will Do

  • Conduct HVAC asset analyses and identify opportunities for energy and CO₂ reduction
  • Review HVAC systems, building documentation, BMS architecture, and control strategies to uncover optimisation potential
  • Analyse operational data and performance trends to identify inefficiencies and improvement opportunities
  • Support the implementation of HVAC optimisation measures together with customers, facility teams, and service providers
  • Troubleshoot HVAC, BMS, controls, and communication issues in operational buildings
  • Validate optimisation results and support measurement and verification activities
  • Prepare professional technical reports and recommendations for customers
  • Conduct QA/QC reviews of optimisation implementations and performance results
  • Work directly with customers throughout the optimisation lifecycle, from initial assessment through implementation and ongoing support
  • Collaborate with software engineers, product managers, and data teams to continuously improve DABBEL's optimisation capabilities
  • Support customer onboarding, technical workshops, and operational reviews
  • Contribute practical HVAC expertise to the development of new products, services, and optimisation strategies
  • Take ownership of projects and ensure high-quality technical delivery

What You Bring

  • Degree in Mechanical Engineering, Energy Engineering, Building Services Engineering, or a related technical field
  • 5+ years of experience in HVAC engineering, building operations, BMS, energy optimisation, commissioning, consulting, or related technical roles
  • Strong understanding of HVAC system fundamentals and building operations
  • Experience with commercial or industrial building HVAC systems
  • Knowledge of Building Management Systems (BMS) and HVAC control strategies
  • Experience analysing HVAC performance and identifying optimisation opportunities
  • Understanding of central plant systems such as chilled water plants, heat pumps, district energy systems, thermal storage, or similar technologies
  • Strong analytical and problem-solving skills
  • Ability to work independently and take ownership of technical projects
  • Experience preparing technical documentation and communicating technical concepts clearly
  • Comfortable working directly with customers and stakeholders
  • Professional working proficiency in English is required
  • German language skills are considered a strong advantage, particularly for customer-facing activities within the DACH region, but are not mandatory
  • Experience with energy audits, commissioning, retro-commissioning, IPMVP, ISO 50001, or energy performance verification is a plus
  • Experience with data analytics tools such as Excel, Power BI, Python, or similar is beneficial

What Makes This Role Different

  • This is not a traditional engineering role focused solely on design work.
  • In this role, you will:
  • Work on real buildings with measurable energy and carbon reduction targets
  • See the direct impact of your work on customer outcomes
  • Combine engineering expertise with operational problem solving
  • Work closely with customers, software teams, and product development
  • Contribute to one of the most important climate challenges of our time
  • Gain exposure to advanced AI-driven building optimisation technologies
  • Help shape the future of intelligent building operations
  • Compensation and Incentives
  • Salary: 60.000 € – 85.000 € per year depending on experience and qualifications
  • In addition to base salary, this position participates in DABBEL's team bonus model. We believe in shared success, shared responsibility, and strong alignment around outcomes.

What We Offer

  • The opportunity to work on one of the most relevant climate challenges: decarbonising the built environment
  • A high-impact technical role with direct customer influence
  • Strong ownership and autonomy
  • Participation in our team bonus model
  • A young, ambitious, and international team
  • Exposure to cutting-edge AI applications in HVAC and building operations
  • Professional growth opportunities within a fast-growing climate tech company
  • The opportunity to help scale DABBEL across international markets

To Apply

Please submit:

  • Your CV
  • A cover letter
  • LinkedIn profile
  • Optional: relevant project examples, technical reports, or portfolios

Application Questions

Please describe your current role and responsibilities.

  • How many years of experience do you have working with HVAC systems in commercial or industrial buildings?
  • Have you been responsible for HVAC load calculations as part of your engineering work?
  • Have you worked with Building Management Systems (BMS) and HVAC control sequences?
  • Can you describe an HVAC optimisation project or energy-saving initiative you were personally involved in?
  • How would you rate your English communication skills, both written and spoken?
  • Do you hold a degree in Mechanical Engineering or a related engineering field?
  • What is your earliest possible start date?

Job Type: Full-time

Pay: 60.000,00€ - 85.000,00€ per year

Application Question(s):

  • Please describe your current role and responsibilities
  • How would you rate your English communication skills, both written and spoken?
  • Do you hold a degree in Mechanical Engineering or a related engineering field?
  • What is your earliest possible start date?
  • How many years of experience do you have working with HVAC systems in commercial or industrial buildings?
  • Have you been responsible for HVAC load calculations as part of your engineering work?
  • Have you worked with Building Management Systems (BMS) and HVAC control sequences?
  • Can you describe an HVAC optimisation project or energy-saving initiative you were personally involved in?

Education:

  • Bachelor's (Required)

Experience:

  • HVAC/BMS, and consulting for large buildings: 5 years (Preferred)

Language:

  • English (Preferred)
  • Work Location: In person