Internship - Winter 2027 - Advanced Software Development, Numerical Methods

Pratt & Whitney; Longueuil; On-site; CAD 16,000 - 22,000; Full time

Job summary

Pratt & Whitney Canada in Longueuil is seeking a software-focused intern to join the Numerical Methods group. You will collaborate with senior engineers to develop algorithms, implement robust tests, and help deploy solutions for aerospace propulsion challenges.

Ideal candidates are enrolled in Mechanical, Computer, or Software Engineering and can work on-site in Canada. The internship runs January 5 to April 23, 2027, with a Monday–Friday schedule and flexible hours.

Qualifications

• Enrolled in a Canadian university throughout the internship.
• Eligible to work in Canada and on-site in Quebec.
• Mechanical, Computer, or Software Engineering student required.
• First to last CO-OP term students; English reading and writing ability.

Responsibilities

• Develop innovative software solutions addressing aerospace problems with senior engineers.
• Research and develop new software algorithms and efficient solutions.
• Build robust tests and pipelines to maximize code coverage and deployment.
• Support deployment through Agile cycles and communicate progress in group discussions.

Skills

Python

C or Fortran

English (functional)

pytest

Git

SVN

Windows & Linux

Education

Mechanical/Computer/Software Engineering Student

Tools

Git

SVN

pytest

Job description

About Pratt & Whitney Canada

Pratt & Whitney Canada (P&WC) is a global leader in aerospace innovation, proudly headquartered in Longueuil, Quebec, since 1928. We design and manufacture next-generation aircraft engines that power the world's largest fleet of business, general aviation, and regional aircraft and helicopters.

For nearly 100 years, our teams have been at the forefront of propulsion technology, pushing boundaries to make flight more efficient and reliable. Our engines support missions that truly matter, from transporting people and essential goods, to enabling emergency medical services, humanitarian operations, and wildfire suppression around the world.

An Employer of Choice

Pratt & Whitney Canada was named one of Canada's Best Employers for 2026 by Forbes, marking the 11th consecutive year the company has earned this recognition. Pratt & Whitney Canada also ranked #1 employer in the aerospace and defense industry in the country. In addition, our headquarters continue to be recognized among the top employers in the Montreal region. Together, these distinctions reinforce our reputation as an employer of choice in Montreal, across Canada, and around the world.

Internship dates: January 5th to April 23rd, 2027.

Location: The position is based at our Longueuil location; internship from Monday to Friday, with flexible hours and exclusively on-site.

Why join our team?

The Numerical Methods group within the Research and Technology department at Pratt and Whitney Canada is at the leading edge in applying advanced design system solutions to complex aerospace problems at the most prolific aerospace company in the world. Our group is at the forefront of applying advanced AI methods ranging from machine learning, neural-networks, and large-language models to push the boundaries of our analytical capabilities. We work with almost all the engineering disciplines to build a world-class multi-disciplinary design system to help unlock our products potential and explore new designs. The skills that are acquired while working in our group will position you well as you start your career and become an engineer of the future.

What will your day-to-day look like?

• Working with other senior engineers on developing innovative software solutions to address complex aerospace problems.
• Research and develop innovative software algorithms and solutions
• Build robust tests and pipelines to maximize code-coverage and streamline deployment
• Support the deployment through Agile cycles
• Communicate your progress to the larger group during round-table discussions

What do you need to be successful?

• Be eligible to work in Canada.
• Be enrolled in a Canadian university throughout your internship.
• Be able to work on-site in the province where you are hired if applicable
• Mechanical, Computer, or Software Engineering Student
• First to last CO-OP term students
• Minimum of functional English is required
• Fluency in Python and ideally a compiled language such as C or Fortran
• Knowledge of Python testing frameworks such as pytest
• Knowledge of building software using revision management systems like Git or SVN.
• Experience with both Windows and Linux operating systemsAnalytical experience in turbomachinery design, systems engineering, or controls software development

Although this position is part of a French-speaking work environment, it requires a working knowledge of English to read and understand specialized instructions, plans, drawings and technical terms that may emanate from international organizations, as well as to write and sometimes communicate in English with customers, suppliers or international colleagues.

Working at Pratt & Whitney Canada

The masculine pronoun is used without discrimination and solely for the purpose of making the text easier to read. We will consider applications from all qualified candidates.

At Pratt & Whitney Canada, we combine passion, boldness, and precision to design, manufacture, and maintain the most advanced and reliable aircraft engines in the world. Our work and the quality of our products contribute to the success of our customers, who in turn save lives, support commerce, connect communities, and protect freedom.

At Pratt & Whitney Canada, you have the opportunity to make a difference every day—just look up. Are you ready to go beyond?

The selected candidate will be required to complete a criminal background check and any applicable clearances with respect to the handling and transfer of controlled goods. Employment is conditional upon the successful completion of these checks and obtaining the required clearances. Failure to do so will result in the withdrawal of the employment offer.