Full-Time
Senior Full-Stack Developer
Updated on 9/11/2026
Jonas Software
1,001-5,000 employees
Long-term ownership of vertical software
Compensation Overview
CA$95k - CA$105k/yr
Markham, ON, Canada
Hybrid
Hybrid role requiring visits to the Markham office 1–2 times monthly.
 Software Engineering (1) |
|---|
Get referred to Jonas Software
See people who can refer or advise you
- Seven or more years of professional software development experience.
- Strong expertise in C#, .NET, ASP.NET Core, SQL Server, REST APIs, Entity Framework, and Azure Cloud Services.
- Strong front-end development experience with Angular, TypeScript, HTML5, and CSS/LESS.
- Experience developing scalable software-as-a-service 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.
- 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 with Product, QA, Support, and DevOps teams.
- Troubleshoot complex production issues and implement sustainable solutions.
- Use AI-assisted development tools to improve productivity, quality, and delivery speed.
- Support continuous integration and continuous delivery pipelines and automated deployment processes through Azure DevOps.
- 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.
- 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 artificial intelligence technologies.
- Comfort working in a globally distributed development team.
Jonas Software manages a decentralized portfolio of over 160 independent software companies across 40 different industries. The company operates by acquiring niche software businesses and providing them with financial security and strategic guidance while allowing them to keep their original branding and management teams. Unlike competitors that often restructure or resell their acquisitions, Jonas uses a "buy-and-hold-forever" strategy to ensure long-term stability for its brands. Its goal is to foster growth within specific vertical markets by maintaining a permanent home for specialized software businesses.
Company Size
1,001-5,000
Company Stage
N/A
Total Funding
N/A
Headquarters
Toronto, Canada
Founded
1990
Get referred to Jonas Software
See people who can refer or advise you
Simplify's Take
What believers are saying
- 2026 brought Delineate, Magnusmode, and Finastra's banking assets into Jonas.
- Jonas said 2025 mid-year review added 10 acquisitions and expanded nine verticals.
- Aava Software joined Jonas Europe in August 2025, deepening ERP and MES exposure.
What critics are saying
- If Constellation's acquisition machine stalls in 2026-2027, Jonas becomes a low-growth holdco.
- Adheris Health's 2025 ANZ sale shows sellers can reprice or delay Jonas transactions.
- Decentralized brands invite duplicated roadmaps, uneven execution, and margin leakage across 200+ brands.
What makes Jonas Software unique
- Since 2003, Jonas has never sold an acquired company, signaling permanent ownership.
- Jonas runs 200+ independently managed software brands across 40+ vertical markets.
- Vesta, CORA, and Vertus keep local brands, teams, and customer relationships intact.
Help us improve and share your feedback! Did you find this helpful?
Benefits
Remote Work Options
Flexible Work Hours
Company News
Jonas Europe has acquired Aava Ohjelmistot Oy, a leading developer of ERP and MES solutions for manufacturing and logistics. Aava Software, known for its low-code platform, aims to enhance its growth by leveraging Jonas's sales and marketing expertise. This acquisition marks a new phase for Aava, with plans to expand as a major ERP and MES provider.
Jonas Software ANZ has acquired RxOne, a key provider of pharmacy management software in New Zealand. This acquisition enhances Jonas's presence in the pharmacy and healthcare technology sector. RxOne will continue to operate independently, maintaining its team and focus on innovation and customer service. Jeff McKee, CEO of Jonas Software ANZ, expressed excitement about supporting RxOne's growth, while RxOne's founder, Margie Peat, highlighted the benefits of joining Jonas.
Jonas Software ANZ acquires MedAdvisor Solutions' ANZ business.
Wallingford, Oxfordshire, April 28th, 2025 – Jonas Europe (“Jonas”) is pleased to announce the acquisition of Wheatley Software Solutions.
Brisbane, Australia, December 19, 2024 - Jonas Software ANZ ("Jonas") proudly announces its acquisition of OnTap Data Australia, a leading provider of data analytics and insights solutions tailored for the liquor, hospitality, and retail sectors.