Current jobs related to Senior C# Developer - Toronto - Apex Systems


  • Toronto, Canada York Digital Consulting Inc. Full time

    We’re seeking a seasoned C++ Developer with hands‑on retail Point of Sale (POS) experience—ideally with CMA (Cornell‑Mayo & Associates) solutions, now NCR OmniPOS. You’ll build and optimize high‑performance transaction flows, device integrations, and store‑side services. What You’ll Do Design & develop robust, maintainable C++ components...


  • Toronto, Canada York Digital Consulting Inc. Full time

    We’re seeking a seasoned C++ Developer with hands‑on retail Point of Sale (POS) experience—ideally with CMA (Cornell‑Mayo & Associates) solutions, now NCR OmniPOS. You’ll build and optimize high‑performance transaction flows, device integrations, and store‑side services. What You’ll Do Design & develop robust, maintainable C++ components...


  • Toronto, Ontario, Canada York Digital Consulting Inc. Full time

    Senior C++ Developer12 months + contract5 days onsite with some flexibilityAbout the RoleWe're seeking a seasoned C++ Developer with hands-on retail Point of Sale (POS) experience—ideally with CMA (Cornell-Mayo & Associates) solutions, now NCR OmniPOS. You'll build and optimize high-performance transaction flows, device integrations, and store-side...


  • Toronto, Canada Orion Innovation Full time

    Senior Full Stack Developer (C#) at Orion InnovationRole: Senior Full-Stack Developer [C#, Angular]Type: Remote – working EST HoursSecurity Clearance: Must be eligible for up to a Top-Secret Security Clearance.Job Overview: The Senior Full-Stack Developer role requires expert-level development in C# (.NET Core) to build robust APIs and services. The...

  • C# Developer

    2 days ago


    Toronto, Canada Insight Global Full time

    This role is provided by Insight Global. Your actual pay will be based on your skills and experience. Base pay range CA$27.00/hr - CA$40.00/hr Professional Recruiter at Insight Global - Technology C# Developer Contract: 6 months + extensions Hybrid: 1-2 days/week (Thursday mandatory) Rate: $27-40/hr JOB DESCRIPTION Insight Global is looking to hire a C#...

  • C# Developer

    2 days ago


    Toronto, Canada Insight Global Full time

    This role is provided by Insight Global. Your actual pay will be based on your skills and experience. Base pay range CA$27.00/hr - CA$40.00/hr Professional Recruiter at Insight Global - Technology C# Developer Contract: 6 months + extensions Hybrid: 1-2 days/week (Thursday mandatory) Rate: $27-40/hr JOB DESCRIPTION Insight Global is looking to hire a C#...

  • C# Developer

    2 days ago


    Toronto, Canada Insight Global Full time

    This role is provided by Insight Global. Your actual pay will be based on your skills and experience. Base pay range CA$27.00/hr - CA$40.00/hr Professional Recruiter at Insight Global - Technology C# Developer Contract : 6 months + extensions Hybrid: 1-2 days/week (Thursday mandatory) Rate: $27-40/hr JOB DESCRIPTION Insight Global is looking to hire a C#...


  • Toronto, Canada Arup Full time

    A global engineering consultancy in Toronto is seeking a Mid-Senior Level Software Developer to lead and mentor within the MassMotion team. You will leverage 6+ years of experience in C++ and/or C# to drive software projects that design human-centric spaces. This role offers a full-time position with a competitive salary range of $100,000 to $115,000, along...


  • Toronto, Canada Arup Full time

    A global engineering consultancy in Toronto is seeking a Mid-Senior Level Software Developer to lead and mentor within the MassMotion team. You will leverage 6+ years of experience in C++ and/or C# to drive software projects that design human-centric spaces. This role offers a full-time position with a competitive salary range of $100,000 to $115,000, along...

  • Senior C++ Developer

    2 weeks ago


    Toronto, Canada Island Full time

    DescriptionWe’re a team of hungry, high-character professionals from all backgrounds who came together to reinvent work for the modern enterprise.Island, the Enterprise Browser is the ideal enterprise workplace where work flows freely while remaining fundamentally secure. With the core needs of the enterprise naturally embedded in the browser itself,...

Senior C# Developer

1 month ago


Toronto, Canada Apex Systems Full time

Senior C# Developer - Electronic Trading Terms: 6-month Contract (rolling to 2 years) Location: Downtown Toronto, 1-2 days a week in office Project: Design, develop, and enhance electronic trading platforms, ensuring high performance, scalability, and reliability. Collaborate with sales, trading, and business analysts to implement new features aligned with the product roadmap. Optimize workflows and integrate pricing, execution, and risk controls into low-latency environments. These electronic trading and credit systems will be built in-house, and are replacing current tools that the front-office is utilizing. Responsibilities: Design and develop robust, scalable software solutions for Electronic trading systems. Devise and implement efficient algorithms and data structures tailored to low-latency environments. Create comprehensive test cases to ensure software stability and reliability. Collaborate with cross‑functional teams to research, design, and implement system enhancements. Communicate effectively with operations teams regarding new features and strategy behaviors. Investigate and resolve production issues, performing root‑cause analysis independently. Translate business requirements into technical solutions with minimal guidance. Key Qualifications: 8+ years experience as a Developer or Software Engineer. Strong programming skills in C#/.NET. 5+ years experience with electronic trading systems and capital markets. Knowledge of capital markets products such as Fixed Income and Credit Products. Knowledge of highly scalable and low-latency architectures. Understanding of functional programming, and building applications from scratch. #J-18808-Ljbffr