Sr. Full Stack Engineer - .Net

Toronto, ON
On-site
Posted Sep 12, 2026
1 position

Opens an external site

Employment type: Full-time
Experience level: Senior · 5+ years
Minimum education: Bachelor’s degree
Posting language: English
Working hours: 40 hours per week

Job summary

You will design, code, test, and maintain mission-critical software platforms while collaborating with technical and non-technical teams. The role focuses on delivering actionable data products and leveraging AI to solve customer challenges.

Job details

About B3 B3 is a cloud-native, AI-driven data experiences innovator that puts data to work for everyone. Powered by AI, data science, and a secure data foundation, our platform makes data actionable with seamless integration, real-time visibility, and intuitive dashboards. With B3, companies get intelligent, agile data experiences that drive exponential business impact. About the Role Are you excited about building world-class platforms that power mission-critical software at scale? B3 enables enterprise manufacturers to digitize their operations and leverage AI to dramatically enhance performance. As a Sr. Full Stack Engineer, you'll work closely with both technical and non-technical teams to understand customer challenges and deliver products that solve them. The ideal candidate is comfortable across the entire software development lifecycle, you're leveraging AI in your builds, designing, coding, testing, maintaining applications and most importantly, you're SHIPPING! . You should be fluent in multiple technologies, able to write high-quality, maintainable code, and confident working in a fast-moving environment. You’ll apply your creativity, problem-solving skills, and engineering mindset to accelerate enterprise AI adoption. About You Degree in Software Engineering, Computer Science, Math, Physics, or related field. Strong proficiency in C#, .NET, and ASP.NET (MVC/Core). Experience building responsive web applications using React, JavaScript (jQuery), HTML5, CSS3, and Bootstrap. Strong experience with SQL Server and relational database design. Ability to learn quickly, work independently, and make sound decisions. Excellent written and verbal communication skills. Strong problem-solving skills and ability to work within complex systems. Bonus Points Deploying/managing Azure ecosystems (App Services, Functions, DevOps) and utilizing Redis key-value databases. Building real-time web communications using SignalR. Experience with AI and Machine Learning. Understanding of Data Science workflows or industrial data. Hands-on exposure to LLMs and agentic software development frameworks. About the Office All In, In Office – Centrally located at the corner of Yonge & St. Clair, we show up together, every weekday. Face-to-face time fuels our culture, speed, and creativity. Built for Growth – We’re moving fast, keeping structure light, and rewarding people who take ownership and drive momentum. If you’re driven by applied AI, enjoy working in the future, and want to build data science solutions that make a real impact, we’d love to meet you. Note: This position reflects an existing vacancy. B3 Systems is proud to be an Equal Employment Opportunity employer. We truly appreciate your interest in joining our team. While we may not be able to connect with every applicant, we will reach out directly to those selected for next steps. No “artificial intelligence” tool will be used to screening, assessment or selection of applicants for this opportunity. We celebrate diversity and are committed to creating an inclusive, supportive workplace where everyone can thrive. If you require any accommodations or support at any stage of the selection process, please let us know—we’re happy to help.

What you’ll do

Requirements

Candidates must have a degree in a relevant field and strong proficiency in C#, .NET, and web technologies like React and SQL Server. Experience with Azure ecosystems and AI/ML workflows is considered a significant asset.