Full Stack Security Developer Jobs in Thornhill, ON

Position Details:

· Permanent, Full-time.

· Salaried

· On-Site

· Schedule: Monday to Friday.

· Hours of Work: 8:30 a.m. to 5:00 p.m.

Location: Royal Windsor Dr. Mississauga

Summary:

We are seeking an experienced Senior Software Developer (Full Stack) with 7+ years of commercial software engineering experience. In this key on-site role in Mississauga, you will lead the modernization and architecture of our core diagnostic platforms, developing robust web applications, hardware integrations, and cloud services.

The primary responsibilities and duties include but are not limited to:

· Diagnostics Modernization: Re-build, architect, and enhance core hardware diagnostic and monitoring platforms for optimal performance and reliability.

· Full-Stack Development: Design, code, and maintain scalable web applications and microservices using Node.js, C#, C++, and modern frontend frameworks (SPA).

· Performance & Security: Troubleshoot, debug, and optimize applications for speed, responsiveness, low latency, and security compliance.

· Cross-Functional Collaboration: Partner with product management, hardware engineers, and business stakeholders to translate technical requirements into scalable solutions.

· Testing & CI/CD: Drive automated unit testing, code reviews, and CI/CD deployment pipeline improvements across Windows and Linux environments.

· AI & Modern Tooling: Leverage modern AI development tools (e.g., Claude, VS Code AI tools) to streamline engineering efficiency and code quality.

· Technical Documentation: Maintain clean system architecture designs, API specifications, and developer documentation.

Requirements / Qualifications:

Academic Training:

Bachelor’s degree in Computer Science, Software Engineering, or equivalent practical industry experience.

Work & Technical Experience:

· Experience: 7+ years of software development experience.

· Languages & Frameworks: Node.js, C#, C++, JavaScript/TypeScript, HTML5, Single Page Applications (SPA). Knowledge of MFC VC++, PHP, Go is an asset.

· Databases: MySQL, AWS DynamoDB, and general NoSQL database architectures.

· APIs & Messaging: RESTful APIs (experience with gRPC or MQTT protocols is a plus).

· Cloud & Tools: AWS, Docker, Git, CI/CD pipelines.

· Systems & OS: Hands-on experience with both Windows and Linux operating environments; embedded systems background.

· AI Developer Tools: Familiarity with AI-assisted development tools (Claude, VS Code, Cursor).

Specific Competencies:

· Software Architecture & Platform Modernization: Proven ability to design, re-architect, and modernize complex software platforms, with a focus on performance, reliability, and maintainability.

· Full-Stack & Systems Development: Advanced expertise in developing scalable web applications, microservices, and system-level solutions using Node.js, C#, C++, and modern SPA frameworks.

· Performance Optimization & Secure Development: Strong capability in troubleshooting, debugging, performance tuning, and implementing secure, compliant software solutions.

· Quality Engineering & DevOps: Experience leading automated testing, code review practices, and CI/CD pipeline optimization across Windows and Linux environments.

· Cross-Functional Technical Leadership: Ability to collaborate with product managers, hardware engineers, and business stakeholders to translate requirements into scalable technical solutions.

· AI-Enabled Software Development: Proficiency leveraging AI-powered development tools to improve engineering productivity, code quality, and development efficiency.

· Technical Documentation & Knowledge Sharing: Skilled in producing and maintaining system architecture documentation, API specifications, technical standards, and developer guidance.

Job Posting Requirements:

This posting is for an open vacancy currently available within Media Resources Inc.

Artificial Intelligence (AI) is not utilized in the recruitment process.

MRI does not require Canadian Experience.

We thank all applicants and advise that only those selected for an interview will be contacted and informed of the next steps within 45 days of the interview. MRI will retain a copy of the job posting and associated application form for 3 years.

Media Resources Inc. is one of the top-performing companies in the Signage Industry, and it is a place that offers big growth possibilities. Our customers range from the top billboard advertising companies in North America to leading commercial sign companies & AV industry leaders, to advertising agencies and building developers. For them, we design and manufacture world-class indoor & outdoor digital displays, large-format digital printing, 3D creations, and North American sign installation services.

We are in this position because of the great people that make up the Media Resources team from the team members who make our products and install signage from across the industry, to the people who service our customers directly, to the people who keep the “engine running”. Truly we believe great experiences start with great people.

We are looking for people to join our team. If you are someone who shares our values around having a passion for excellence, a belief in a result-driven work environment, a belief in a culture focused on innovation & continuous improvement, and a system built on teamwork & internal promotion then Media Resources might be a place for you!