Senior Lead Software Developer R-20253
S.i. Systems
Toronto, ON-
Number of positions available : 1
- Salary To be discussed
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Contract job
- Published on November 27th, 2025
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Starting date : 1 position to fill as soon as possible
Description
Senior Lead Software Developer
100% Remote
Responsibilities:
Build & Innovate
- Design, code, test, and debug cutting-edge applications using Microsoft .NET, modern web technologies, and relational databases
- Tackle the most complex technical challenges with minimal direction-this is where your expertise truly shines
Lead & Mentor
- Shape product architecture and develop comprehensive project plans
- Guide and review your team's work, fostering growth in junior developers
- Be the technical expert everyone turns to when the stakes are high
Strategize & Execute
- Research and champion new technologies that keep us ahead of the curve
- Develop accurate cost and time estimates, making critical decisions to keep projects on track
- Propose innovative solutions based on evolving business needs
Support & Solve
- Provide Tier III technical support for the most urgent and complex issues
- Be the hero when critical problems need expert-level troubleshooting
- Monitor trends and continuously improve our support processes
MUST HAVES:
- Core Skills: C#, Web API, Microservices, JavaScript, TypeScript, AJAX
- Database Expertise: MS SQL Server 2019, T-SQL
- Frameworks: ASP.NET MVC, .NET Core, Angular, AngularJS
- Modern Tools: Visual Studio, SSRS, Bootstrap, HTML5
- Integration: WCF/Web Services, XML, JSON
- Methodologies: DevOps, Agile
- Architecture: Multi-tier Internet/Intranet applications with proven design patterns
Education & Experience
- Bachelor's degree in Computer Science or related field
- 10+ years of battle-tested application architecture and development experience
Requirements
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