Managing Technical Consultant, Air Quality, Dispersion Modeler

Sigma Earth; India; On-site; INR 600,000 - 1,200,000; Full time

Job summary

Sigma Earth in India is seeking an experienced Air Quality Consultant to lead modeling projects and ensure compliance with environmental regulations. Ideal candidates will have at least 4 years of consulting experience in air quality, a Bachelor’s degree in a relevant field, and strong knowledge of Clean Air Act regulations. Responsibilities include managing project scope, interacting with regulators, and preparing high-quality reports for clients. The role provides opportunities for client engagement and business growth.

Qualifications

• 4+ years of consulting experience in air quality or atmospheric science.
• Strong knowledge of Clean Air Act regulations.
• Proficiency in regulatory air quality models.

Responsibilities

• Lead air quality dispersion modeling projects.
• Prepare analyses for Title V and PSD compliance.
• Manage emissions inventories for industrial clients.

Skills

Air quality consulting

Environmental regulations knowledge

Communication skills

Project management

Regulatory air quality models

Education

Bachelor’s degree in Environmental Science or related field

Master’s degree preferred

Tools

AERMOD

VISCREEN

CALPUFF

Microsoft Office

Job description

What You’ll Bring

Required

• Bachelor’s degree in Environmental Science, Atmospheric Sciences, Meteorology, or a related field; master’s degree preferred.
• 4+ years of consulting experience in air quality or atmospheric science, with 5–7 years preferred.
• Strong knowledge of Clean Air Act regulations, including Title V, MACT, PSD, and air dispersion modeling requirements.
• Proficiency in regulatory air quality models such as AERMOD, VISCREEN, and CALPUFF.
• Excellent communication skills for working with clients and regulatory agencies.
• Ability to manage multiple projects in a fast-paced setting and travel when needed.
• This role is not eligible for immigration sponsorship.

Preferred

• Master’s degree in a relevant discipline.
• Programming and GIS capabilities.
• Familiarity with Microsoft Office and air modeling software.

Key Responsibilities

• Lead air quality dispersion modeling projects using EPA-approved models to evaluate health and environmental impacts.
• Prepare accurate analyses for Title V, PSD, and New Source Review compliance.
• Manage emissions inventories and calculations for a range of industrial clients.
• Act as a technical point of contact with state and federal regulators during permit reviews.
• Prepare high-quality reports and presentations for clients and agencies.
• Manage project scope, budget, and schedule while maintaining quality standards.
• Build strong client relationships and support business growth through technical expertise.