Sr..Net Developer

Job# : 3021839

Job Description :

Senior .NET Developer

Apex Systems is a global IT services provider and our consulting practice has an opening for a Senior .NET Developer with strong .NET desktop application development experience, capital markets knowledge, and the ability to lead critical development efforts. This opportunity is with one of our clients, a large Canadian bank , supporting a key application used by global electronic trading teams.

Client : Canadian Bank – Capital Markets Technology

Terms : 6‑month contract

Perks : Join an internationally recognized organization and a highly collaborative, high‑performance technology team!

Location : Toronto, ON – Hybrid

Application Process

It is best to apply via the medium on which you are seeing this posting. If you encounter technical difficulties submitting your resume, please send a Word version to Eric Somerville –

Please reference : Senior .NET Developer

Job Summary

We are looking for a Senior .NET Developer to act as the lead developer on a critical internal desktop application supporting global electronic equities and algorithmic trading workflows. The application is built using .NET / C# , WPF , and WinForms , and integrates with Java-based back-end services via Solace messaging middleware (JMS) and internal APIs.

You will take ownership of the full application lifecycle, working closely with traders, business stakeholders, and technology teams across global regions including London, New York, and Sydney.

Key Responsibilities

• Serve as the lead developer for a major internal desktop application (Own full lifecycle development in .NET / C# using WPF and WinForms .
• Work with another developer (50% allocation) to manage enhancements, support, and delivery.
• Java / Spring backend systems through Solace , JMS , and internal APIs.
• Partner with global electronic trading teams to understand workflows and deliver high-quality solutions.
• Support business domains including equities , capital markets , and algorithmic trading , with a strong understanding of market terminology and operational workflows.
• Contribute to modernization initiatives and internal cloud platforms (Kubernetes, Docker).
• Ensure stability, performance, and scalability of mission-critical trading tools.

Requirements

Nice to Have

Why This Role Is a Great Opportunity

This is a high-impact position supporting a global Capital Markets trading platform for a major Canadian financial institution. You’ll work closely with business and technology partners worldwide and gain exposure to advanced electronic trading workflows. There is significant opportunity for growth, visibility, and long-term engagement within the bank’s technology ecosystem.

EEO Employer

Apex is an Equal Employment Opportunity / Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, sexual orientation, gender identity, national origin, disability, protected veteran status, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with applicable law. If you require accommodation to search or apply for positions on our website, please contact our Employee Services Department at or 844‑463‑6178.

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click here for more details.

Apex Benefits Overview :   Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses / books / seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Apex team member can provide.