Senior Project Engineer; Energy, Mechanical & Decarbonization

Do you want to engineer the future of energy efficiency?

Join Ecosystem and be part of a team that’s transforming how buildings use energy and power. We’re on a mission to decarbonize the built environment through bold design, heat electrification, and hands‑on project delivery! If you’re a creative Mechanical Design Engineer ready to bring cutting‑edge solutions in sustainable infrastructure to life, this is where your ideas shape the future!

At Ecosystem we believe we should be accountable for results. That’s why we've integrated engineering and construction, seeing our projects through from design concept to implementation and commissioning. And that's how we can efficiently solve complex energy and decarbonization challenges in the built environment. Here are some of the projects we've been working on recently in the US:
San Diego Padres Stadium, Con Edison:

Utility Thermal Energy Network, Museum of Arts and Design.

You are a curious, creative, and proactive engineer with a strong understanding of electromechanical systems. You are passionate about intelligent energy solutions. As part of a multidisciplinary and innovative team of engineers driven by technical challenges, you are eager to contribute to the success of multi-million-dollar projects.

At Ecosystem, you won’t be working on standard projects with off‑the‑shelf solutions. You will be involved in existing buildings that are energy‑intensive and complex, designed in a time when energy was inexpensive. Each project is unique and requires critical thinking, creativity, and resourcefulness.

You will take part in the development of energy performance projects, from audit to construction and through to results validation. Here, you won’t be given a step‑by‑step manual‑instead, you’ll be told what the building needs to achieve, and you’ll have the freedom, resources, and tools to determine how to get there.

Specifically, you will:

• Act as the single point of ownership for assigned projects, leading both project and design management
• Serve as lead engineer, managing project timelines, work streams, budgets, and mentor junior team members while ensuring effective collaboration with MEP firms and client stakeholders
• Review and enhance MEP drawings and designs to optimize system performance and reduce project cost
• Gather and analyze client energy bills to identify potential energy savings based on current energy rates and the building’s energy use intensity (EUI)
• Analyze mechanical/ electrical/ control drawings and perform site surveys to understand the operation of the building
• Develop energy conservation measures based on clients’ needs and financial parameters
• Develop and perform calculations using a combination of software and simulations of potential energy savings from the proposed design
• Select equipment based on energy performance
• Prepare project construction budgets and develop financial models
• Provide technical assistance to the Construction Manager during the construction phase of the project
• Monitor project performance to ensure attainment of anticipated energy savings
• Develop technical concepts and associated written documentation required by the Client Acquisition Team and support the Sales Team in identifying clients’ needs
• Participate in internal and external meetings/presentations and nurture client relationships
• Your professional development is an integral part of your role. At Ecosystem, you are encouraged to continuously deepen your expertise, experiment, and think outside the box. We value boldness‑where others wait for solutions to be proven, we prefer to be among the first to innovate

• Bachelor’s degree in Mechanical, Chemical, or Physics Engineering
• 5–10 years of experience in design engineering or mechanical systems design, ideally within heavy Mechanical & HVAC projects
• Proven track record contributing to large‑scale design‑build projects (>$1M), with growing ownership of design scope and accountability
• Strong ability to translate theoretical expertise and technical knowledge into innovative, practical solutions through collaboration with multidisciplinary teams
• Skilled in drafting…