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Senior Full Stack Developer Jobs in Kitchener, ON

Software Engineer (Full Stack)

Waterloo, ON · On-site

CA$70K - CA$120K/yr

Role Overview We are looking for a Full Stack Software Engineer to join the our dynamic team and help build Magnet One - our platform for digital forensics workflows. As a part of this team you will ...

Description Turn AI Opportunities Into Reality - Lead full-stack development, mentor the next generation of AI engineers, and transform finance operations. Join our team and what we'll accomplish ...

About the Role As a Senior Mobile Software Engineer within our US Retirement technology ... Working across the full stack, you will develop React Native applications and NestJS services ...

Our Shipper Technology department is looking for a Full-Stack Software Developer to join our ... Senior Manager Technology --- Purolator is an equal opportunity employer committed to diversity and ...

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Showing results 1-20

Senior Full Stack Developer information

What is the difference between Senior Full Stack Developer vs Backend Developer?

AspectSenior Full Stack DeveloperBackend Developer
Required SkillsProficiency in both frontend and backend technologies, such as JavaScript, HTML, CSS, and server-side languages like Node.js, Python, or JavaSpecialized in server-side development, working with languages like Java, Python, Ruby, or PHP, and database management
Work EnvironmentCollaborates across frontend and backend teams, often involved in full project lifecycleFocuses primarily on backend systems, APIs, and database integration
Common UsageUsed in roles requiring full project oversight and versatile development skillsUsed in roles focused on server-side logic, database management, and API development

The main difference is that a Senior Full Stack Developer handles both frontend and backend development, providing a comprehensive approach to projects, while a Backend Developer specializes solely in server-side logic and database management. Both roles require strong programming skills, but the Full Stack Developer's expertise spans the entire technology stack.

How does a Senior Full Stack Developer typically collaborate with cross-functional teams during a project lifecycle?

As a Senior Full Stack Developer, you'll frequently collaborate with designers, product managers, QA engineers, and other developers to deliver end-to-end solutions. You'll be involved in requirements discussions, offer technical guidance, and help align frontend and backend development with business goals. Your role often includes code reviews, mentoring junior team members, and ensuring seamless integration across various systems. This collaborative environment encourages knowledge sharing and innovation while ensuring project success.

What are the key skills and qualifications needed to thrive as a Senior Full Stack Developer, and why are they important?

To thrive as a Senior Full Stack Developer, you need advanced proficiency in both front-end and back-end programming languages, frameworks, and a solid understanding of software architecture, usually supported by a relevant degree and several years of experience. Mastery of tools such as Git, Docker, CI/CD systems, and cloud platforms like AWS or Azure is typically required, alongside familiarity with databases and version control systems. Strong problem-solving abilities, leadership, effective communication, and collaboration skills set exceptional developers apart. These skills and qualities are crucial for delivering robust, scalable solutions while mentoring teams and efficiently bridging gaps between client requirements and technical implementation.

What are Senior Full Stack Developers?

Senior Full Stack Developers are experienced professionals who design, develop, and maintain both the front-end and back-end components of web applications. They are proficient in multiple programming languages and frameworks, enabling them to handle servers, databases, APIs, and user interfaces. In addition to coding, they often lead development teams, make architectural decisions, and ensure software quality and scalability. Their expertise allows them to oversee the entire application lifecycle, from concept to deployment.
What are the most commonly searched types of Full Stack Developer jobs in Kitchener, ON? The most popular types of Full Stack Developer jobs in Kitchener, ON are:
What cities near Kitchener, ON are hiring for Senior Full Stack Developer jobs? Cities near Kitchener, ON with the most Senior Full Stack Developer job openings:
Infographic showing various Senior Full Stack Developer job openings in Kitchener, ON as of July 2026, with employment types broken down into 81% Full Time, 9% Part Time, 1% Temporary, and 9% Contract. Highlights an 81% Physical, 3% Hybrid, and 16% Remote job distribution.
Specialist, Application Development (Full Stack Developer)

Specialist, Application Development (Full Stack Developer)

L3Harris Technologies

Waterdown, ON

CA$85K - CA$105K/yr

Full-time

Posted 13 days ago


Job description

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security. Specialist, Application Development (Full Stack Developer) Reference 40291 Waterdown, Ontario About the Role Responsible for research, design, and development of computer software systems. Participates in all phases of the development life cycle, including requirements analysis, design, implementation, integration, and testing of products. Applies computer science, engineering, and mathematical analysis concepts and principles in the development of the target application. Works closely with cross functional organizations to develop and evaluate interfaces, and operational performance requirements and design of the overall system. Develops test procedures, software programs, and related documentation. Contributes to determining, estimating, and validating the cost and scope of software efforts to ensure product meets project cost, schedule, and technical constraints Primary Responsibilities Develop and maintain web applications using C#, ASP.NET., and Microsoft SQL Collaborate with cross-functional teams to define, design, and ship new features. Write clean, maintainable, and efficient code. Troubleshoot and debug applications. Ensure the performance, quality, and responsiveness of applications. Create device-independent reactive designs using HTML5, CSS3, jQuery, JavaScript, and Bootstrap. Develop unit tests to ensure code quality and reliability. Lead small to medium feature developments. Work in an agile team environment. Be a team player and collaborate effectively with the team. Participate in code reviews and provide constructive feedback. Refactor and restructure existing code bases and modules to improve performance and maintainability Required Capabilities Proficiency in C# and ASP.NET. Strong knowledge of SQL Server and database management. Experience with DevOps practices and tools is an asset Experience in a development team that follows Agile project methodologies is an asset Proven analytical and creative problem-solving abilities. Highly self-motivated and directed, with keen attention to detail. Able to prioritize and execute tasks in a high-pressure environment. Able to quickly adapt and learn new or unfamiliar technologies. Strong customer service orientation, and has served as part of a motivated and diverse team. Strong communication and teamwork skills. May have practical knowledge of project management. Bachelor’s Degree in a STEM field (Software Engineering, Computer Science, Computer Engineering, Electrical Engineering, Math) is preferred Understanding of CI/CD pipelines and DevOps practices is an asset Business experience in an aerospace or manufacturing environment is an asset Desired Education and Experiences Requires practical knowledge of job area. Bachelor’s Degree and a minimum of 4 years of prior related experience. Graduate Degree or equivalent with 2 years of prior related experience. In lieu of a degree, minimum of 8 years of prior related experience. *This posting is for a current vacancy. In the province of Ontario, Canada, the pay range for this position will be $85,000 to $105,000. LI-BD1 At L3Harris, we foster an inclusive and equitable workplace. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. For applicants with disabilities, we will provide you with accommodation so that you have what you need in order to be at your best. L3Harris performs background checks prior to employment as all applicants must be eligible for registration with the Controlled Goods Program and obtain and maintain a positive security assessment. Some positions may require a government of Canada “Reliability” status and/or Level 2 (Secret) security clearance. In addition, L3Harris performs pre-employment substance abuse testing where required.