Sustainable Energy Engineer (Thermal Energy / District Heating)

Ramboll; Warszawa; On-site; PLN 120,000 - 160,000; Full time

Benefits offered by this job

Private healthcare

Cafeteria system

Holiday subsidies

Life insurance

Hybrid work model

Flexible hours

Job summary

Ramboll is looking for a Sustainable Energy Engineer (Thermal Energy / District Heating) to join a global team driving the energy transition in Poland. You’ll design low‑carbon energy systems, perform energy modelling, and support public and private clients in achieving climate goals across markets and borders.

You will work on district heating, CHP, heat pumps, energy storage, PtX and related technologies, with emphasis on feasibility studies and technical documentation.

Qualifications

• University degree in a technical field related to energy engineering.
• 5+ years in energy sector (district heating, thermal generation, renewables, or consulting).
• Experience with energy modelling and technical documentation.

Responsibilities

• Collaborate on technical projects with senior consultants.
• Ensure sustainability, safety and compliance across project stages.
• Support decarbonisation and modernization of thermal energy infrastructure.
• Work on low-carbon heat generation technologies and energy supply strategies.
• Conduct feasibility studies and techno-economic analyses.
• Design and optimise sustainable energy systems and district heating concepts.
• Prepare technical documentation and assist with permitting processes.
• Collaborate across disciplines to deliver energy solutions.

Skills

Energy engineering

Energy modelling

MS Excel

English (B2)

Polish language

Education

MSc or BSc in Energy/Mechanical/Process/Environmental Engineering

Tools

Thermoflex

AutoCAD

Job description

Sustainable Energy Engineer (Thermal Energy / District Heating)

• Full-time

At Ramboll, we believe that engineering, consulting, and sustainability go hand in hand. With over 18,000 experts in 35 countries, we work on projects that make a real difference to people, the planet, and future generations.

In Poland, we’ve been active for over 30 years, particularly in the energy generation and gas transmission sectors. We help our clients transition to clean, modern, and resilient energy systems. Now, we’re looking for talented engineers and consultants to join us on this journey.

Your new role

As a Sustainable Energy Engineer at Ramboll, you will be part of a team dedicated to driving the energy transition and designing low‑carbon, future‑ready energy systems. You will work on innovative projects related to renewable energy, energy efficiency, thermal energy systems including district heating and combined heat and power (CHP), and integrated energy planning. Your role involves developing technical solutions, conducting energy system analyses, and supporting public and private clients in reaching their climate and sustainability goals. You will collaborate across markets and borders to deliver high‑impact, sustainable energy infrastructure.

Key responsibilities

• Working with senior consultants on technical projects.
• Ensuring that sustainability, safety, and compliance are integral to all project stages.
• Supporting decarbonization and modernization of thermal energy infrastructure.
• Working on low‑carbon heat generation technologies and thermal energy supply strategies.
• Conducting feasibility studies, energy modelling, and techno‑economic analyses.
• Designing and optimizing sustainable energy systems.
• Working on conceptual and feasibility studies for district heating systems, CHP plants, power plants, and energy transformation technologies (e.g. heat pumps, energy storage, PtX, biogas).
• Preparing technical documentation and working with permit and design processes.
• Supporting the integration of energy solutions in urban development and infrastructure projects.
• Collaborating with experts across disciplines to deliver sustainable energy solutions.

Your profile

• A university degree (MSc or BSc) in Energy Engineering, Mechanical Engineering, Process Engineering, Environmental Engineering, or a related technical field.
• 5+ years of relevant experience in the energy sector – e.g. district heating, thermal generation, renewables, or energy consulting.
• Solid understanding of sustainable energy systems.
• Experience working with technical documentation and energy modelling.
• Proficiency in MS Office tools (especially Excel); knowledge of Thermoflex, AutoCAD is welcome.
• Communicative in English (minimum B2); Polish language skills are required.
• Strong analytical, organizational, and communication skills.
• A collaborative mindset and proactive approach to project delivery.

We offer

• Fast career development in a global company.
• Work in an international environment with real impact.
• Hands‑on learning with top tools and senior mentors.
• Targeted training & development programs.
• Flexible hours and hybrid work model (3 days from office – 2 days from home).
• Employment contract – first one for 1 year.
• Inspiring team culture based on knowledge sharing, sustainability, and innovation.
• Great benefits – private healthcare, cafeteria system, holiday subsidies, life insurance.

About Ramboll

Founded in Denmark, Ramboll is a foundation‑owned people company. We have more than 18,000 experts working across our global operations in 35 countries. Our experts are leaders in their fields, developing and delivering innovative solutions in diverse markets including Buildings, Transport, Planning & Urban Design, Water, Environment & Health, Energy, and Management Consulting. We invite you to contribute to a more sustainable future working in an open, collaborative, and empowering company. Combining local experience with global knowledge, we together shape the societies of tomorrow.

Equality, diversity, and inclusion is at the heart of what we do

We believe in the strength of diversity and know that unique experiences and perspectives are vital for creating truly sustainable societies. Therefore, we are committed to providing an inclusive and supportive work environment where everyone can flourish and reach their potential. We welcome applications from candidates of all backgrounds.

All your information will be kept confidential according to EEO guidelines.