Senior Full-Stack Developer

Posted 2 Days Ago
Be an Early Applicant
Markham, ON, CAN
In-Office
95K-105K Annually
Senior level
Productivity • Software
The Role
Design, develop, and maintain scalable full-stack SaaS applications across web, API, cloud, and mobile platforms. Build Angular and React front ends, C#/.NET backend services, REST APIs, and SQL Server solutions. Contribute to architecture decisions, code reviews, mentoring, integrations, cloud-native Azure development, CI/CD pipelines, and production troubleshooting. Collaborate with Product, QA, Support, and DevOps teams while using AI-assisted development tools to improve delivery and quality.
Summary Generated by Built In
                                                                                    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.

                                                                          

Skills Required

  • 7+ years of professional software development experience
  • Strong expertise in C#
  • Strong expertise in .NET and ASP.NET Core
  • Strong expertise in SQL Server
  • Strong expertise in REST APIs
  • Strong expertise in Entity Framework
  • Strong expertise in Azure Cloud Services
  • Strong front-end experience with Angular
  • Strong front-end experience with TypeScript, HTML5, and 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
  • Strong problem-solving skills
  • Excellent communication and collaboration abilities
  • Ability to work independently while supporting team success
  • Passion for modern software engineering and emerging AI technologies
  • Comfort working in a globally distributed development team
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The Company
6,000 Employees
Year Founded: 1990

What We Do

Jonas Software acquires, manages, and builds industry-specific software companies globally. It provides enterprise management software solutions across more than 40 vertical markets and operates as a decentralized group, allowing portfolio companies to retain day-to-day operational autonomy. The company focuses on mission-critical vertical-market software, supporting businesses with tools, expertise, and a long-term ownership model designed to help them grow into successful companies.

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