Application developer Jobs in Oshawa, ON

Status: Contract (Up to 12 months)

Working Conditions: Hybrid

Education Level: 4-Year university education in Computer Science, Software Engineering, or a related field or by having the equivalent level of education.

Base Location: Oshawa, ON

Shifts(s): Days

Travel: 10%

Deadline to Apply: March 25, 2026

Salary Range: $1,704.68 - $2,658.86 Per Week

Electrify your career and help build a brighter tomorrow.

Every generation has a challenge that defines them. At OPG, we are calling on all innovators, disruptors, thought leaders and change-makers. Join us as we work to electrify life in one generation and build a sustainable future powered by our electricity, our ideas, and our people. Join OPG and make history.

Whether you work in the skilled trades or are a business professional, a career at OPG is an opportunity to electrify your life on -- and off -- the job.

JOB OVERVIEW

Ontario Power Generation (OPG) is looking for a dynamic, strategic and results-driven professional to join our team in the role of Full-Stack Developer.

Reporting to the Senior Manager, IT Services, this position is responsible to independently design, develop, test, and maintain high-quality software applications using technologies such as Java, .NET, ASP.NET Core, SQL, and Microsoft Azure. Ensure solutions align with business objectives by actively participating in architectural discussions, integrating security and compliance best practices, and optimizing for performance, scalability, and long-term maintainability.

KEY ACCOUNTABILITIES

• Accountable for independently developing, testing, and maintaining software applications that meet user needs and align with business objectives, using technologies such as Java, .NET, ASP.NET Core, and SQL.
• Accountable for contributing to and making informed decisions in architectural design discussions to ensure system robustness, scalability, and long-term maintainability.
• Accountable for proactively identifying, troubleshooting, and resolving software defects to ensure system reliability and user satisfaction.
• Accountable for conducting code reviews, providing constructive feedback, and mentoring junior developers to uphold high code quality standards and foster continuous team improvement.
• Accountable for integrating security best practices and compliance with industry standards and data protection regulations into all stages of the software development lifecycle.
• Accountable for effectively collaborating with stakeholders across departments to gather requirements, align on project goals, and deliver solutions that address cross-functional needs.
• Accountable for creating and maintaining comprehensive documentation of features, technical decisions, and system architecture to support knowledge retention and facilitate onboarding.
• Accountable for implementing performance optimization techniques, evaluating emerging technologies, and recommending tools and practices that drive innovation and enhance the efficiency and competitiveness of software solutions.

QUALIFICATIONS

• 4-Year university education in Computer Science, Software Engineering, or a related field or by having the equivalent level of education.
• Over 4 years experience as a Full-Stack Software Developer
• Demonstrated experience in designing, developing, testing, and maintaining software applications in a professional environment.
• Strong proficiency in multiple programming languages and frameworks, including Java, C#, .NET, ASP.NET Core, ASP.NET MVC, SQL, JavaScript, HTML5, and front-end technologies such as Angular, React, or JQuery.
• Demonstrates a clear understanding of GitOps (code management, peer reviews and CI/CD) and the use of AI technologies in software development.
• Hands-on experience with cloud platforms (preferably Microsoft Azure), APIs, databases, and containerization/orchestration tools such as Docker and Kubernetes.
• Proven ability to work effectively within Agile software development environments, collaborating with cross-functional teams and adapting to evolving priorities.
• Solid understanding of software design patterns, architectural best practices, and performance optimization techniques to ensure scalable and maintainable solutions.
• Effective verbal and written communication skills, with the ability to collaborate across departments, mentor team members, and contribute to documentation and knowledge sharing.

The successful candidate will exhibit uncompromising integrity and commitment to upholding corporate values, and the OPG Code of Business Conduct.

OPG is committed to fostering an inclusive, equitable, and accessible environment. If you require accommodation during the selection process, please contact

What makes a career at OPG different?

With operations across Ontario and the United States, OPG is one of the most diverse power producers in North America. As the largest generator in Ontario, we meet approximately 50% of the province’s electricity needs, largely from low-carbon sources like nuclear and hydro.

As we work to achieve our vision of Electrifying life in one generation, OPG and our family of companies are also helping advance the development of new low-carbon technologies such as Small Modular Reactors (SMRs), refurbishment projects, and electrification initiatives to help power the growing demands of a growing economy. Join OPG and make history.

Please submit your application online at . OPG thanks all those who apply; however, only candidates considered for an interview will be contacted.

#LI-Hybrid

Please note: All job postings at OPG are to fill existing vacancies within our organization.

OPG may use artificial intelligence (AI) tools as part of the applicant screening process. However, applications will also be reviewed by a member of our Recruitment team to ensure a fair and thorough assessment.

The base salary range considers many factors including, but not limited to experience, education, and training, including any collective agreement requirements for union represented positions. It is not typical for the salary to be offered near the top of the range, and salary is dependent on numerous factors. For management roles, the base salary range does not represent the total compensation package. The total compensation package for regular full-time management roles includes pay-for-performance programs for annual and medium time periods. Maintaining a high-performance culture and excellence is a core expectation of every member of our leadership team and is rewarded through the established compensation framework.

OPG is committed to employment equity. As such, we encourage applicants from equity-seeking communities (Indigenous Peoples, racialized persons, persons with disabilities, and women). We strongly believe that alleviating the under-representation of equity-seeking individuals will create a stronger OPG team and allow us to better serve the needs of our diverse communities.

In order to fulfill the above-mentioned purpose, priority in hiring may be given to qualified persons who self-identify as a member of equity-seeking groups as identified in the application process. This initiative constitutes a special program under the Human Rights Code/Canadian Human Rights Act.