Python Developer Internship Jobs in West Hartford, CT

ISO New England is the independent system operator responsible for ensuring the safe and reliable flow of electricity in our region and planning for the future of the electric grid. We are at the forefront of New England's ongoing transition to clean energy.
As advanced technologies integrate into the power grid, the electricity demand and generation mix of the power system will experience a major shift and require innovative solutions to create a reliable and efficient grid. The Capacity Requirement and Accreditation group within System Planning seeks an innovative engineer or analyst to meet these exciting challenges.
NOTE: This role is currently located in Windsor, CT until it permanently moves to Holyoke, MA, which is currently expected to occur in 2028.
What we offer you:

• Hybrid work environment (3 days/week onsite)
• Distance-based relocation assistance available
• Competitive compensation with a base salary + performance bonus
• Robust benefits package, including:
• Enhanced 401(k) and financial planning support
• Tuition reimbursement and professional development
• Wellness programs, including an onsite gym
• Onsite luncheon spaces with free coffee and a variety of dining options
• Flexible work hours
• Employee Business Networks
• A stable, mission-driven workplace where your impact truly matters

How you will make an Impact
The individual will support regional and national resource capacity planning and accreditation initiatives of capacity auction reforms by contributing technical analyses, study development, and stakeholder engagement activities. This role supports the implementation and refinement of methodologies used to assess resource contributions to system adequacy and reliability and represents the organization in regional and national forums by providing analytical support for studies, committees, and regulatory discussions.

• Perform bulk power system simulations using industry standard software tools, including but not limited to GE MARS, SERVM, and PLEXOS

• Provide technical and procedural leadership by coordinating and facilitating work within the ISO and across a wide range of stakeholders, including Market Participants, NEPOOL and ISO committees, and regional and national regulatory entities

• Collaborate with ISO staff and external consultants to conduct resource adequacy and reliability studies, and prepare clear, comprehensive written reports documenting objectives, assumptions, methodologies, results, and recommendations

• Support and actively participate in internal and external regional and national committees, task forces, and working groups, as required

• Respond to data and information requests from regional and national reliability organizations, as well as state and federal regulators

• Effectively communicate complex analyses to diverse stakeholder audiences

What we are looking for

• Bachelor's degree in engineering, Mathematics, Statistics, Economics, Operations Research, Energy Systems, or a related quantitative field.
• Self-motivated with strong attention to detail, the ability to work independently, collaborate effectively across teams, and communicate technical concepts clearly in both written and verbal formats.
• Foundational knowledge of probability, statistics, forecasting, and data analysis, with the ability to evaluate trends, test assumptions, and support long-term planning decisions.
• Ability to analyze large datasets, develop insights, and present findings to technical and non-technical audiences.
• Experience using analytical tools and programming languages such as Python, R, MATLAB, SQL, or similar through coursework, internships, research, or professional experience.
• Interest in electricity markets, system planning, power system reliability, or energy policy.
• Knowledge of electric power systems, generation resources, transmission networks, or electricity market fundamentals is preferred

Desired not required:

• Graduate degree in Engineering, Science, Statistics, Applied Mathematics, or a related field.
• Experience with probabilistic resource adequacy metrics (e.g., LOLE, EEU) and/or production cost modeling.
• Familiarity with ISO New England/NEPOOL processes and stakeholder engagement.
• Knowledge of NPCC, NERC, ISO New England, and/or FERC reliability and regulatory requirements.
• Experience applying probabilistic modeling tools to resource adequacy or reliability studies.
• Strong analytical and problem-solving skills, including experience with Python, R, MATLAB, SQL, or similar tools.

This employer will not sponsor applicants for work visas for this position (ex: H-1B, F-1/CPT/OPT, O-1, E-3, TN, J, etc.).
The expected salary range for this position is $86,000 - $115,000 per year. This role is also eligible for an annual performance bonus, comprehensive health insurance (medical, dental and vision), flexible spending and health savings accounts, a 401(k) plan with generous employer contributions and a student debt benefit, life and AD&D insurance, disability insurance, critical illness and hospital indemnity benefits, paid time off, paid leave, a wellness program, an employee assistance program and other great company perks.
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This is a U.S. based role. If the successful candidate resides outside of the U.S., relocation will be required.
Equal Opportunity: We are proud to be an EEO employer. Applicants for employment are considered without regard to race, color, religion, creed, sex (including pregnancy, childbirth, and related medical conditions), gender identity or expression, sexual orientation, citizenship, national origin, age, ancestry, marital status, disability (including learning, mental, intellectual, and physical), service in the uniformed services, genetic information, or any other status protected by applicable law.
Drug Free Environment: We maintain a drug-free workplace and perform pre-employment substance abuse testing.