C2S Energy is a fast-growing energy efficiency and HVAC contracting company based in New Bedford, MA. We work across residential, small business, commercial, and industrial sectors — primarily through the Mass Save program — with a team of 30+ field technicians. We're building something real here, and we need great people behind the scenes to keep things running.
What you'll do
Manage day-to-day office operations including phones, scheduling, and correspondence with customers and program partners
Support invoicing, job tracking, and data entry in QuickBooks Online and monday.com
Assist with onboarding paperwork, HR coordination, and keeping employee files current
Help coordinate field crew logistics, fleet paperwork, and vendor communications
Liaise with Mass Save program administrators on job submissions, approvals, and documentation
Keep internal systems organized and help the leadership team stay on top of priorities
What we're looking for
Organized, reliable, and able to manage multiple tasks in a busy environment
Comfortable with QuickBooks, Google Workspace, and/or project management tools (monday.com experience a plus)
Strong communicator — comfortable on the phone and in writing
Experience in construction, trades, or a service-based business is a big plus
Self-starter who takes initiative and doesn't need to be micromanaged
FULL-TIME
HERS Rater
New Bedford, MA
$55,000-$65,000
Overview
The HERS Rater is a certified professional responsible for conducting home energy rating assessments, performing energy modeling, and verifying compliance with energy performance standards (Mass Save, ENERGY STAR, Stretch Code, etc.). This role requires strong technical knowledge, attention to detail, and understanding of building science and software proficiency.
Primary Responsibilities
Energy Modeling & Analysis
Conduct detailed energy modeling using REM/Rate, Ekotrope, or equivalent software
Input building characteristics including insulation, windows, HVAC, water heating, and appliances
Perform Manual J/D/S calculations for HVAC system verification
Generate HERS Index scores and provide energy performance recommendations
Prepare pre-construction and post-construction energy models per program requirements
Analyze blower door and duct leakage test results
Document all modeling assumptions and inputs clearly
Field Inspections & Testing
Perform blower door tests (depressurization/pressurization) and interpret results
Conduct duct leakage testing (DuctBlaster) when applicable
Perform visual inspections of insulation installation quality, air sealing, and HVAC equipment
Measure building dimensions, window orientation, and thermal mass features
Photograph installed systems and document building characteristics
Verify Grade I insulation installation per ANSI/RESNET/ACCA standards
Perform rough-in and final inspections per program timelines
Compliance & Documentation
Ensure all projects meet program requirements (Mass Save, ENERGY STAR, Stretch Code, etc.)
Maintain RESNET/HERS Rater certification current and in good standing
Complete all required checklists and certifications per program guidelines
Prepare final HERS reports with detailed findings and recommendations
Maintain detailed project files with all inspection photos, measurements, and test results
Adhere to confidentiality and ethical standards
Quality & Communication
Communicate findings to builders, contractors, and homeowners clearly and professionally
Provide technical feedback on energy modeling and building performance
Identify deficiencies and recommend corrective actions
Participate in quality audits and third-party reviews
Support customer education on energy performance and HERS scores
Continuous Learning
Stay current with building science, energy code changes, and software updates
Participate in HERS Rater training and industry conferences
Contribute to process improvements and best practices
Provide feedback to leadership on program requirements and challenges
Qualifications Required
Education: High school diploma or GED; some college or technical training preferred
Certification:
Active RESNET HERS Rater certification required
Blower door testing certification (BPI, RESNET, or equivalent)
1–3 years of HERS rating experience or building science background
Familiarity with energy modeling software (REM/Rate, Ekotrope, or equivalent)
Experience with blower door and duct leakage testing
Knowledge of energy codes and programs (Mass Save, ENERGY STAR, Stretch Code)
Technical Skills:
Strong understanding of building science (insulation, air sealing, thermal bridging, moisture management)
Proficiency with REM/Rate, Ekotrope, or similar energy modeling software
Ability to perform and interpret blower door and duct tests
Ability to read blueprints and understand HVAC systems
Strong math and analysis skills
Personal Attributes:
Attention to detail and accuracy
Ability to communicate technical concepts clearly
Strong organizational and documentation skills
Problem-solving ability
Professional demeanor and ethical standards
Physical Requirements
Ability to perform field inspections (climbing ladders, accessing attics/basements)
Ability to operate blower door and duct testing equipment
Ability to travel to job sites and meet inspection schedules
Salary Range
Compensation Structure:
Base salary (salaried position)
Health insurance, Dental, paid time off
Continuing education and certification reimbursement
Potential bonus for high-volume, high-quality ratings
Path to QA/Quality Assurance Manager or Technical Specialist roles
FULL-TIME
Project Manager
New Bedford, MA
$50,000 - $75,000
Project Manager
Overview
The Project Manager owns the profitability, timeline, and quality of assigned projects from initial estimate through closeout. This role is critical to C2S Energy's success and requires a blend of technical knowledge, leadership, and financial acumen. The PM is responsible for coordinating all trades, managing budgets, and ensuring customer satisfaction on every job.
Primary Responsibilities
Project Planning & Scheduling
Develop detailed project schedules and coordinate all trades (HVAC, insulation, electrical, etc.)
Create pre-project plans including crew assignments, material procurement, and site logistics
Conduct pre-construction meetings with customers and internal teams
Plan for weather, permitting delays, and other contingencies
Adjust schedules as needed and communicate changes to all parties
Budget Management & Profitability
Own the project profit margin from estimate through closeout
Track labor hours, material costs, and change orders in real-time
Identify cost overruns early and implement corrective actions
Negotiate subcontractor pricing and manage vendor relationships
Reconcile project profitability against budget monthly
Recommend process improvements to increase efficiency
Quality & Compliance
Verify work quality at each phase (pre-construction, rough-in, final)
Ensure all work meets Mass Save and program requirements
Coordinate HERS rater inspections and address any deficiencies
Education: High school diploma or GED; some college or trade certification preferred
Experience:
3–5 years of field experience (HVAC, insulation, or related trades) or 2+ years of project management in construction/trades
Demonstrated experience managing budgets and labor
Familiarity with energy efficiency programs, Mass Save, or HERS ratings (can be learned on the job)
Technical Knowledge:
Strong understanding of HVAC and insulation systems
Ability to read blueprints, specifications, and energy models
Basic knowledge of electrical and building code compliance
Business Skills:
Proficiency with project management software (Excel, scheduling tools, CRM)
Strong math and financial acumen (calculating labor hours, material costs, profit margins)
Ability to create and manage budgets
Personal Attributes:
Excellent communication and leadership skills
Problem-solving ability under pressure
High attention to detail and organizational skills
Willingness to learn new systems and technologies
Accountability mindset with a focus on results
Physical Requirements
Ability to visit job sites regularly (frequent travel)
Comfortable communicating with field crews and homeowners
Compensation Structure:
Base salary + performance bonus tied to project profitability, on-time delivery, and customer satisfaction
Health insurance, Dental, paid time off
Professional development budget (certifications, training, conferences)
Path to Operations Director or Development Manager roles for high performers
FULL-TIME
Insulation Installer
New Bedford, MA
$18-$25/hr
Insulation Installer
Overview
The Insulation Installer is responsible for the installation of insulation systems (batt, blown-in, and spray foam) on residential energy efficiency projects. This role is critical to achieving energy performance targets and requires attention to detail, physical capability, and a commitment to quality workmanship per Mass Save standards.
Primary Responsibilities
Installation & Execution
Install batt insulation in walls, attics, and crawlspaces per plan specifications and R-value requirements
Operate spray foam equipment (open-cell and closed-cell) safely and accurately
Install blown-in insulation in existing cavities and new construction
Perform air sealing work (caulk, foam, tape) at joints, penetrations, and transitions
Verify insulation placement and coverage; address voids and compression issues
Install moisture barriers and vapor retarders per specifications
Ensure Grade I insulation installation quality per ANSI/RESNET standards
Quality & Safety
Maintain safety certifications (e.g., spray foam operator certification) and retraining as required
Follow OSHA safety protocols, PPE requirements, and company safety standards
Report equipment issues and quality concerns to crew leadership
Job Site Management
Set up and break down work areas properly
Manage material waste and site cleanup
Coordinate timing with other trades (HVAC, electrical, etc.)
Communicate progress and obstacles to crew chief or project manager
Continuous Improvement
Stay current with spray foam and air sealing best practices
Provide feedback on material performance and installation challenges
Support training of junior crew members
Participate in Mass Save technical training and audits
Qualifications Required
Education: High school diploma or GED
Experience: 1–3 years of insulation installation experience (spray foam preferred but not required)
Technical Skills:
Ability to read and understand plan specifications and energy models
Proficiency with hand tools, power tools, and spray foam equipment
Understanding of building science basics (moisture, air sealing, R-values)
Personal Attributes:
Ability to work independently and take direction
Strong attention to detail and quality
Physical stamina and comfort working in tight spaces, high heat, and cold environments
Willingness to obtain spray foam certification and continuing education
Physical Requirements
Ability to lift 50+ lbs regularly and work overhead
Comfortable in attics, crawlspaces, and tight wall cavities
Ability to work in varied weather conditions and heights
Tolerance for dust, fiberglass, and chemical fumes (with proper PPE)
Compensation Structure:
Base salary + performance bonuses for zero-rework jobs
Spray foam certification and continuing education reimbursement
Health insurance, Dental, paid time off
Clear path to Crew Lead or Project Coordinator roles
FULL-TIME
HVAC Technician
New Bedford, MA
$25-$40/hr
HVAC Technician
Overview
The HVAC Technician is responsible for the installation, commissioning, and service of heat pump systems, air handlers, and related HVAC equipment on residential energy efficiency projects. This role requires EPA Section 608 certification, strong technical troubleshooting skills, and a commitment to Mass Save quality standards.
Primary Responsibilities
Installation & Commissioning
Install and commission heat pump systems (mini-split, central, air-to-water) per manufacturer specifications and Mass Save requirements
Perform EPA Section 608 compliance checks and refrigerant handling
Conduct ductwork design, installation, and sealing for central systems
Perform Manual J load calculations and verify system sizing
Complete refrigerant charge verification and superheat/subcooling measurements
Pressure test ducts and verify air sealing per ANSI/RESNET standards
Quality & Compliance
Verify installation quality for HERS rater inspections
Document all work with photos and measurements per company standards
Maintain EPA Section 608 certification and all required licenses
Pass Mass Save quality audits and third-party inspections
Follow OSHA safety protocols and company safety policies
Attend training on new equipment, refrigerants, and best practices
Customer Engagement
Explain system operation and maintenance to homeowners
Walk through thermostat programming and settings
Respond professionally to customer questions and concerns
Identify additional work opportunities (HVAC upgrades, controls, etc.)
Team Collaboration
Coordinate with insulation crews and other trades on job sites
Report equipment issues to management immediately
Support crew chiefs and project managers with job completion
Comfortable working at heights, on ladders, and in attics/basements
Ability to work in varied weather conditions and tight spaces
Salary Range
$58,000 – $75,000+ annually (OT Dependent)
Compensation Structure:
Base salary + performance bonuses
Certification reimbursement (EPA Universal, blower door testing, heat pump commissioning)
Health insurance, Dental, paid time off
FULL-TIME
Manager of Operations
New Bedford, MA
$55,000 - $70,000
About the role
C2S Energy is a fast-growing energy efficiency contractor running programs across Massachusetts — Mass Save, HVAC, insulation, HERS ratings, and more. As our Office Operations Manager, you'll be the operational backbone that keeps everything moving: the person field crews, project managers, and leadership all rely on to connect the dots, clear roadblocks, and make sure nothing falls through the cracks.
This isn't a traditional management role — it's a force multiplier position. You'll own the day-to-day infrastructure that makes everyone else more effective. If you're the kind of person who sees a gap and closes it before anyone notices, this role was built for you.
What you'll do
Own the office infrastructure — facilities, vendor relationships, and scheduling — so the team always has what they need to operate
Serve as the central communications hub and program contact point — connecting field teams, project managers, permitting, and billing across all of our programs
Monitor project and permit workflows across the company, flag bottlenecks early, and keep leadership informed about what's moving and what's stuck
Maintain dashboards and tracking systems that give the whole company real-time visibility into project status
Coordinate hand-offs between departments — sales to project management, project management to billing — so nothing gets lost between teams
Support permitting and compliance workflows across municipalities, tracking status, deadlines, and documentation
Help staff troubleshoot technical issues and get the most out of office systems and tools, including monday.com
Spot process gaps before they become problems and bring solutions, not just observations, to leadership
What we're looking for
3+ years in an office operations or office manager role
A natural connector who keeps people aligned without needing to be asked
Strong organizational instincts — you're the person who notices when something is slipping before anyone else does
Comfortable managing competing priorities and communicating across teams with very different functions
Proficient with project management tools (monday.com a strong plus) and standard office software
Clear, proactive communicator — you default to over-communicating, not under
Experience in construction, energy, or field-services is a bonus, not a requirement — but you should be comfortable in a fast-paced, blue-collar environment
Why C2S
Meaningful work in the clean energy sector — what we do matters
A growing company where you'll have real ownership over how operations are built and scaled
A collaborative, no-ego team where your contributions are visible from day one
Direct access to leadership and a real seat at the table when it comes to how the company runs
