Freelance Air Dispersion Modeling Jobs (NOW HIRING)

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 with thousands of experts working across 70 offices in the Americas. 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.

Job locations: Boston or Westford, MA, Hartford, CT, Portland, ME, Princeton, NJ, New York City, NY, Philadelphia, PA

Are you eager to develop your excellence in an inclusive, collaborative, and empowering
community? Are you excited about joining a company that strives to make a difference -
for its employees, clients, and society? Are you motivated by creating sustainable change
that benefits society and nature? If this sounds interesting to you, or you're curious to
learn more, then this role could be the perfect opportunity for you. Join our team and work
with us to close the gap to a sustainable future.

Your new role
As our new Managing Consultant in Air and Climate, you will be part of Ramboll's
Environment & Health Division. This group includes professionals passionate about air
quality and environmental compliance, supporting clients in addressing complex
regulatory and technical challenges. The team provides services across a range of areas,
including air permitting, emissions estimation, regulatory compliance, control technology
assessments, air dispersion modeling, and preparation of air quality and compliance
reports.

Your key tasks and responsibilities will be:

• Serving as the technical lead, overseeing consultant-level staff on complex air
  quality projects
• Critically reviewing and interpreting local, state, and federal environmental
  regulations, with a focus on air compliance
• Maintaining client relationships and managing deliverables to meet client needs
  efficiently and to the highest quality
• Preparing air quality permit applications and environmental reports across a range
  of complexity levels and for a range of industry types
• Estimating emissions and conducting engineering evaluations of air pollution
  sources

Your new team
As part of the team, you will join an exceptional air and climate group focused on solving
complex client challenges and developing sustainable solutions. You will collaborate with 
professionals across the United States, across all levels of experience (from early-career
staff to senior subject matter experts), in a collaborative, mentorship-driven environment that supports continuous learning and professional growth.

About you
From the moment you join Ramboll, we will support your personal and professional
development so that you grow with the company. For this role, your starting
point is:

• B.S. or M.S. in Chemical, Environmental, or Mechanical Engineering, Atmospheric
  Science, or a related physical science with strong quantitative coursework. PE
  certification a plus
• 9+ years of air quality consulting experience, including air permitting, compliance,
  and/or air dispersion modeling
• Demonstrated project management experience, including proposal development,
  managing scope, schedule, budgets, and multidisciplinary project teams
• Experience with client relationship management, and business development
  efforts
• Strong understanding of air pollution control technologies and air dispersion
  modeling tools (e.g., AERMOD)
• Experience interpreting and applying federal and state air regulations, including
  Clean Air Act programs (e.g., NSR/PSD, Title V, NSPS and NESHAP); multi-state
  experience desirable
• Demonstrated experience preparing air permit applications, including NSR/PSD
  and Title V, encompassing emissions calculations, regulatory applicability analysis,
  application preparation, and agency coordination through permit issuance
• Proven ability to communicate technical information effectively to clients,
  regulators, and stakeholders, including presentations and regulatory interactions
• Advanced proficiency in Excel; experience with programming (e.g., Python, R),
  databases
• Demonstrated ability to mentor and develop junior staff in technical and consulting
  skills

What we can offer you

• Opportunities to lead complex, high-impact air quality projects across the U.S.,
  including permitting, modeling, and regulatory strategy for industrial and energy
  clients
• Exposure to complex, multi-state regulatory environments across diverse
  industries, providing broad technical and regulatory experience
• Exposure to innovative tools and approaches, including generative AI, to enhance
  air quality modeling, permitting workflows, and data analysis
• Direct exposure to clients and regulators, with meaningful responsibility in
  technical decision-making and project delivery
• Clear growth path, with opportunities to advance into technical leadership, project
  management, or client-facing roles
• Hands-on development in advanced regulatory strategy, emissions analysis, and
  air quality tools, including dispersion modeling
• Collaborative team environment with experienced practitioners who actively
  mentor and support your development
• Flexible work arrangements to support productivity and work-life balance
• Competitive compensation and benefits, including generous Paid Time Off and
  strong health and retirement plans
• The stability and long-term perspective of a foundation-owned company

Salary Transparency Statement
At Ramboll, we are committed to fair and transparent compensation practices that
support our people and our purpose of creating sustainable societies. The anticipated
base salary range for this position is $115,500 - $150,000 per year. This range reflects
the compensation we reasonably expect to offer at the time of posting. Actual
compensation will vary based on factors such as location, skills, experience, education,
and internal equity. Because we operate across multiple U.S. markets, pay may differ
depending on the cost of labor in specific locations. In addition to base salary, this
position may be eligible for bonus, overtime or other forms of compensation and we offer
a comprehensive benefits package that supports well-being, professional development, 
and work-life balance. Our recruiters are happy to share more about the specific salary
range and total rewards package applicable to your location during the hiring process.

Work at the heart of sustainable change
Ramboll is a global architecture, engineering, and consultancy company. We believe that
the purpose of sustainable change is to create a thriving world for both nature and
people. So, that's where we start - and how we work. At Ramboll, our core strength is our
people, and our history is rooted in a clear vision of how a responsible company should
act. Being open and curious is a cornerstone of our culture. We embrace an inclusive
mindset that looks for fresh, diverse, and innovative perspectives. We respect, embrace,
and invite diversity in all forms to actively cultivate an environment where everyone can
flourish and realize their full potential.

Where People Flourish
Our mission is to create sustainable societies where people and nature flourish. This
means that a culture of inclusion is embedded in everything we do. Our people bring
diverse backgrounds and experiences to the company, enabling us to deliver innovative
and forward-thinking solutions to our clients. We also know how important it is to achieve
the right balance of where, when, and how much you work. At Ramboll, we offer flexibility
as part of our positive and inclusive approach to work. We are committed to equal
employment opportunity, regardless of age, disability or medical condition, gender
identity, marriage and domestic partnership, pregnancy and maternity, race, ancestry, or
national origin, religion or belief, sex and sexual orientation, military service and veteran
status, or any other protected characteristic. Ramboll wants to ensure opportunities are
accessible to candidates with disabilities. So, please let us know if there are any changes
we could make to the application process to make it more comfortable for you. You can
contact us at [email protected] with such requests.

Ready to join us?
Please submit your application. Be sure to include all relevant documents including your
CV and a cover letter connecting your background to the responsibilities of the position.
Please note, applicants must be currently authorized to work in the United States on a
full-time basis. No sponsorship is available for this position.

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