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Budderfly

Energy management as a service provider

Senior Mechanical Engineer

Building Services EngineeringConfirmed live in the last 24 hours
Full-time$110k - $130k

About the Job

Requirements

  • A Bachelor of Science in Mechanical Engineering or a closely related field.
  • At least 7 years of commercial HVAC engineering experience, with a record of delivering engineered solutions ranging from full design packages to contractor-ready scopes of work.
  • Hands-on VRF and heat pump design experience, including equipment selection, refrigerant piping and load calculations.
  • Ventilation design experience, including ERV or DOAS systems and air balance.
  • Experience supporting installation and commissioning.
  • Proficiency with load calculation and equipment selection software.
  • Working knowledge of ASHRAE 62.1 and 90.1, ASHRAE 15, and the International Mechanical Code.
  • A solid grounding in commercial HVAC fundamentals, including packaged rooftop units.
  • Familiarity with energy modeling or efficiency analysis, and utility incentive programs and their documentation.
  • Clear written communication and the ability to explain technical concepts to non-engineers and work across teams, contractors and manufacturers.
  • Ability to manage multiple priorities in a fast-paced, changing environment.

Responsibilities

  • Develop designs and scopes of work for UHP projects, including load calculations, ventilation and air balance, equipment selection and sizing, refrigerant piping and schedules.
  • Design ERV and DOAS ventilation systems for UHP sites.
  • Develop and maintain design standards for repeatable site types to support scaling UHP.
  • Perform technical quality-control reviews of UHP designs and scopes of work prepared by the wider team, and coordinate with third-party MEP firms when stamped documents are required.
  • Evaluate where VRF fits on payback and incentives, including where it can extend beyond typical industry applications, and help refine the approach as UHP expands.
  • Support installation, commissioning and post-install troubleshooting with Project Management, field teams, Service, contractors and manufacturers.
  • Collaborate with IoT and Technology on controls requirements for UHP systems, and review OEM sequences of operation for equipment the company buys and inherits.
  • Engineer complex hydronic systems, including cooling towers, when needs arise.
  • Support other HVAC projects, such as packaged rooftop unit replacements, when UHP workload allows.
  • Prepare the engineering basis for energy savings calculations and utility incentive applications.
  • Help evolve the toolset toward load calculation and equipment selection software.
  • Collaborate regularly with IoT, Technology, Performance Analysis, Service, Project Management, Project Engagement and other teams.
  • Support the mentoring and growth of engineers across the team.

Desired Qualifications

  • Working knowledge of BACnet and Modbus and building automation systems, and experience designing sequences of operation.
  • Experience with complex hydronic systems, including cooling towers.
  • Professional Engineer (PE) license.
  • Experience with multi-site portfolios such as restaurant, hospitality, fitness, education or retail.
  • CEM, LEED AP or similar certifications.

About the Company

Budderfly

Energy management as a service provider

Budderfly provides energy management solutions under an Energy as a Service (EaaS) model. It helps businesses reduce energy use and carbon footprints by installing energy-efficient equipment—such as HVAC systems, LED lighting, and storage/behind-the-meter generation—without requiring upfront capital. Budderfly covers the installation costs and then shares the resulting energy savings with the client, creating a performance-based, pay-from-savings arrangement. This approach sets Budderfly apart from traditional vendors by aligning profitability with sustainability and removing upfront financial barriers for commercial facilities like restaurants and retail stores. The company aims to help clients reach net-zero goals, improve operational efficiency, and expand access to advanced energy technologies across local, national, and global scales.

Company size
201-500
Company stage
Debt Financing
Total funding
$1.2B
Headquarters
Shelton, CT
Founded
2007

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