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Senior Full Stack Software Engineer Jobs in Mississauga, ON

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Full Stack Software Developer

Mississauga, ON · On-site

CA$85K/yr

We are seeking a skilled Full Stack Software Developer with 5+ years of professional experience to design, develop, and maintain robust web applications from concept to deployment. In this on-site ...

Signal 1

Senior Full Stack SoftwareEngineer

Toronto, ON · On-site

Senior Full Stack SoftwareEngineer Reporting to:Director of Application Engineering Signal 1 helps ... Drive software architecture design andestablishmodern engineering practices thatleverageAI-assisted ...

KEV Group

Senior Full Stack Engineer

Toronto, ON · On-site

Who We Are At KEV, we build mission-critical financial software for K-12 schools on a massive scale ... We are hiring a Senior Developer to help design, evolve, and scale the core systems that power KEV ...

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All JobsFull Stack Software Engineer JobsSenior Full Stack Software Engineer JobsSenior Full Stack Software Engineer Jobs in Mississauga, ON

Senior Full Stack Software Engineer information

See Mississauga, ON salary details

$67.4K

$127.7K

$171K

How much do senior full stack software engineer jobs pay per year?

As of Sep 7, 2026, the average yearly pay for senior full stack software engineer in Mississauga, ON is $127,719.00, according to ZipRecruiter salary data. Most workers in this role earn between $111,623.00 and $143,650.00 per year, depending on experience, location, and employer.

What is a senior full stack software engineer?

A Senior Full Stack Software Engineer is an experienced developer responsible for designing, building, and maintaining both front-end and back-end systems in web or software applications. They work with a variety of technologies, frameworks, and databases to ensure seamless functionality across the entire software stack. In addition to coding, they often provide technical leadership, mentor junior developers, and contribute to architectural decisions. Their role requires strong problem-solving skills, an understanding of best practices, and the ability to collaborate with cross-functional teams to deliver high-quality software solutions.

What does a senior full stack software engineer do?

A typical day for a Senior Full Stack Software Engineer involves designing and implementing new features, reviewing and improving code, and collaborating with product managers, designers, and other developers to deliver project goals. You might split your time between writing code for both front-end and back-end systems, participating in daily stand-up meetings, and providing technical guidance to junior team members. The role often requires balancing hands-on development with architectural planning and problem-solving for complex technical challenges. You’ll also frequently interact with stakeholders to gather requirements and provide updates, ensuring alignment throughout the software development lifecycle.

What are the key skills and qualifications needed to thrive as a senior full stack software engineer?

To thrive as a Senior Full Stack Software Engineer, you need deep expertise in both front-end and back-end development, strong problem-solving abilities, and a solid foundation in computer science principles, typically demonstrated by a bachelor’s or master’s degree in a related field. Familiarity with frameworks and languages like React, Angular, Node.js, Python, and proficiency in using cloud platforms, version control systems like Git, and continuous integration tools is crucial, and relevant certifications are an advantage. Exceptional communication, leadership, and teamwork skills help you effectively coordinate with cross-functional teams and mentor junior engineers. These skills ensure you can deliver robust, scalable solutions while driving project success and fostering a collaborative development environment.

What are the most commonly searched types of Full Stack Software Engineer jobs in Mississauga, ON?

The most popular types of Full Stack Software Engineer jobs in Mississauga, ON are:

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For Senior Full Stack Software Engineer jobs in Mississauga, ON, the most frequently searched job titles are:

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Senior Full Stack Software Engineer jobs near you
Infographic showing various Senior Full Stack Software Engineer job openings in Mississauga, ON as of August 2026, with employment types broken down into 1% As Needed, 84% Full Time, 11% Part Time, and 4% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $127,719 per year, or $61.4 per hour.

Senior Full-Stack Developer

Common CENTS Solutions

Markham, ON • On-site

CA$95K - CA$105K/yr

Full-time

Posted 6 days ago

Key responsibilities

  • Design, develop, and maintain scalable enterprise applications across web, API, and cloud platforms.

  • Build modern front-end applications using Angular and React.

  • Develop backend services and APIs using C#, .NET, and ASP.NET Core.

Job description

                                                                                    Job Description: 
Senior Full-Stack Developer
Location: Hybrid (Full-Time)Note: This role requires 1-2 times monthly to our Markham, ON office.
Department: R&D
Reports To: Development Manager / Director of Engineering

Salary Range: $95,000 - $105,000 CAD

About Premier Construction Software

Premier Construction Software is a leading cloud-based ERP platform serving the construction industry. Our platform combines financial management, project management, mobile solutions, reporting, integrations, AI-enabled capabilities, and modern cloud infrastructure to help construction companies operate more efficiently.

We are looking for a highly experienced Senior Full-Stack Developer who thrives in a fast-paced environment and enjoys solving complex business and technical challenges. You will play a key role in designing, developing, and evolving our cloud-native SaaS platform while helping shape the future of AI-driven software delivery.

Key Responsibilities
  • Design, develop, and maintain scalable enterprise applications across web, API, and cloud platforms.
  • Build modern front-end applications using Angular and React.
  • Develop backend services and APIs using C#, .NET, and ASP.NET Core.
  • Design and optimize SQL Server databases, queries, and stored procedures.
  • Contribute to architecture decisions, technical design reviews, and development standards.
  • Build and consume RESTful APIs and third-party integrations.
  • Develop cloud-native solutions within Microsoft Azure.
  • Participate in code reviews, mentoring, and engineering best practices.
  • Collaborate closely with Product, QA, Support, and DevOps teams.
  • Troubleshoot complex production issues and implement sustainable solutions.
  • Leverage AI-assisted development tools to improve productivity, quality, and delivery speed.
  • Support CI/CD pipelines and automated deployment processes through Azure DevOps.
Required QualificationsTechnical Skills
  • 7+ years of professional software development experience.
  • Strong expertise in:
    • C#
    • .NET / ASP.NET Core
    • SQL Server
    • REST APIs
    • Entity Framework
    • Azure Cloud Services
  • Strong front-end experience with:
    • Angular
    • TypeScript
    • HTML5
    • CSS/LESS
  • Experience developing scalable SaaS applications.
  • Experience with Azure DevOps, source control, pipelines, and release management.
  • Strong knowledge of software architecture and design patterns.
  • Experience performing code reviews and mentoring developers.
What Success Looks Like

Within your first 90 days, you will:

  • Become productive within the Premier codebase.
  • Contribute features and bug fixes across Cloud, Mobile, API, and Add-on platforms.
  • Participate in architecture discussions and technical reviews.
  • Demonstrate strong ownership and accountability for deliverables.
  • Embrace AI-assisted development practices and engineering excellence standards.
Preferred Characteristics
  • Strong problem-solving skills.
  • Excellent communication and collaboration abilities.
  • Bias for action and continuous improvement.
  • Ability to work independently while supporting team success.
  • Passion for modern software engineering and emerging AI technologies.
  • Comfortable working in a globally distributed development team.
Technology Stack

Backend

  • C#
  • .NET / ASP.NET Core
  • SQL Server
  • Entity Framework
  • REST APIs
  • OData

Frontend

  • Angular
  • React
  • TypeScript
  • JavaScript
  • HTML5
  • CSS / LESS

Cloud & DevOps

  • Microsoft Azure
  • Azure App Services
  • Azure SQL
  • Azure Storage
  • Azure DevOps
  • CI/CD Pipelines

AI & Productivity

  • Cursor AI
  • GitHub Copilot
  • Microsoft Copilot
  • Azure OpenAI

Development Tools

  • Visual Studio 2022
  • SQL Server Management Studio
  • Postman
  • Azure Storage Explorer
                                                                                    Business Unit: Premier                                                                                    Scheduled Weekly Hours:37.5                                                                                    Number of Openings Available: 1                                                                                    Worker Type: Regular More About Jonas Software:

Jonas Software is a leading provider of enterprise management software solutions, serving a wide range of vertical markets including hospitality, healthcare, construction, education, personal care, fitness, leisure, moving and legal services, to name a few. Within these markets, Jonas is comprised of over 65 distinct brands, each a respected leader in its domain.

Jonas' vision is to be the branded global leader across these verticals and to be recognized by customers and industry stakeholders as the trusted provider of "Software for Life." We are committed to technology, product innovation, quality, and exceptional customer service.

Jonas Software supports over 60,000 customers in more than 30 countries. We employ over 6,000 skilled professionals, including industry experts and technology specialists. Across our broader network, we support a global workforce of more than 30,000 employees.

Headquartered in Canada, Jonas Software has a global footprint with offices around the world. We're a 100% owned subsidiary of Constellation Software Inc., based in Toronto, publicly listed on the TSX (CSU.TO), and a member of the S&P/TSX 60 Index.

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