Join one of the Big Four Accounting Firms Ernst & Young (EY) as an Intern Assurance Climate Change and Sustainability Services (CCaSS) Summer 2026

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Introduction

Are you passionate about climate action, sustainability, and helping organizations build a better future? Join EY’s Climate Change and Sustainability Services (CCaSS) Team as a Summer 2026 Intern and gain hands-on experience working with top professionals across industries. This opportunity is designed for students eager to shape their careers in sustainability consulting, corporate responsibility, and climate strategy—while contributing to EY’s mission of building a better working world.

About EY

At Ernst & Young (EY), we’re dedicated to helping organizations navigate complex challenges and seize new opportunities in a globally connected world. With teams in over 150 countries, EY provides assurance, consulting, tax, strategy, and transaction services to help clients grow responsibly and sustainably. We combine deep sector expertise with cutting-edge technology, data, and AI to create long-term value for clients, people, and society.

Background and Context of the Internship

EY’s Climate Change and Sustainability Services (CCaSS) team supports businesses and governments in responding to societal, environmental, and economic challenges. From ESG strategy and climate risk to digital sustainability solutions, the team works with organizations to strengthen accountability, improve reporting, and drive sustainable transformation.
As a CCaSS Intern, you will be aligned with one of the service areas—Climate Advisory, Sustainability Advisory, Environmental Health & Safety (EHS) Advisory, or ESG Digital—while gaining exposure across diverse industries and clients.

Duties and Responsibilities

As a CCaSS Intern, you will:

Assist in delivering climate change and sustainability services with an emphasis on reporting, advisory, and assurance.
Support clients in identifying, measuring, and managing risks and opportunities related to sustainability and climate change.
Conduct research and analysis on sustainability reporting frameworks, regulations, and industry practices.
Collaborate with EY teams and clients to develop strategies for ESG, EHS, and sustainable innovation.
Participate in meetings, prepare presentations, and contribute to client deliverables.

Requirements/Eligibility Criteria

Currently pursuing a Bachelor’s or Master’s degree in environmental engineering, sustainability, environmental science, policy, data science, occupational health and safety, supply chain, or related fields.
Strong academic record with relevant coursework.
Excellent research, communication, and presentation skills.
Adaptability, curiosity, and willingness to learn in a fast-paced environment.
Leadership experience through student organizations or extracurricular activities is a plus.
Knowledge of ESG frameworks (GRI, CSRD, SEC disclosure rules), carbon markets, life cycle analysis, or sustainable supply chains is an advantage.
Ability to travel and work flexible hours when needed.
Reliable transportation; a valid driver’s license is recommended.

Benefits

Competitive hourly pay: $36.00 – $44.23 (based on education, location, and market alignment).
Practical experience in climate change, ESG, and sustainability consulting.
Mentorship from EY professionals and exposure to global clients.
Hybrid working model with in-person collaboration (40–60% of time on engagements/projects).
If converted to full-time: comprehensive benefits package including medical/dental, 401(k), pension plans, paid leave, and flexible vacation policy.
Access to EY’s diverse, inclusive, and globally connected teams.

How to Apply

Submit your application via the EY Careers Portal, referencing Requisition ID: 1633151.
You may apply to a maximum of two EY positions within six months.
Applications are reviewed by EY’s Early Careers Team; candidates may be contacted by an EY Recruiter.

Contact for More Information

For application or accessibility support:
📞 1-800-EY-HELP3 → Option 2 → Option 1 → Option 2
📧 ssc.customersupport@ey.com

Deadline

Applications are open; check the EY Careers site for anticipated deadlines.
Internship period: Summer 2026
📍 Locations: Denver, Atlanta, Chicago, Boston, New York, Houston

Apply