Ameresco is currently seeking an experienced Senior HVAC Chiller Mechanic to join our Operations & Maintenance Team at the Naval Research Laboratory in Washington, DC. Responsibilities: - Leads the install, maintain, test, and repair of chillers, HVAC systems, fan coil units, heat pumps, air handling units, related piping systems, control valves and controls, and all other related equipment. - Troubleshoots, recharges, cleans, repairs, and checks all heat pump systems with the Ameresco Portfolio. - Make necessary adjustments and calibration of related control devices. - Perform HVAC-related preventive maintenance. - Estimate time and materials needed on particular jobs, as required. - Prepares and updates prints as necessary. - Ensure compliance with company, industry, and regulatory safety standards and protocols. - Perform other duties as required. Minimal Qualifications: - High School Diploma. - Trade or Vocational School education. - 7 years of HVAC experience. - Ability to review confidential US security information. - Valid Driver's License in Good Standing Additional Qualifications: - Excellent knowledge of operating and servicing entire building and support systems including HVAC, HHW, DDC, refrigeration, electric controls, and building safety equipment - Journeyman's HVAC License. - Ability to read and interpret system and equipment plans, specifications, operating manuals. - Basic computer skills including e-mail and data entry using Microsoft Outlook, Word, & Excel. - Ability to lift up to 50 lbs & transport equipment & tools in excess of 300 lbs. - Strong verbal, written, computer communication and organization skills. - Ability to frequently work from ladders, platforms, high places, and cramped spaces. - May require flexibility for 'on call' support or varied schedule needs. The anticipated hourly range for this role is $37.02-$53.61 per hour (presented in good faith). In addition to base pay, employees receive a comprehensive benefits package, such as health insurance, retirement plans, and paid time off, and may be eligible for performance incentives, bonuses, commissions, or equity, depending on the role. Actual pay will depend on factors such as internal equity, skills, experience, education, certifications, and location. This range supports our commitment to pay transparency and compliance with applicable laws. Compensation may vary by work location, including remote arrangements. We disclose salary ranges and benefits in all required external and internal postings and will provide further details upon request at any stage of the hiring process. Applications are accepted on a rolling basis until the position is filled. #LI-AWS #LI-Onsite All official communications from Ameresco will originate from an [redacted].com email address. Any correspondence from other domains should be regarded as fraudulent. Please report any suspicious activity to the platform where the issue was encountered. For further inquiries or concerns, please contact us at 1-866-AMERESCO