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Added 3 mins ago
C
Full Stack Developer (Java + Angular)
CGI
Halifax, NS
- Full-time
That same commitment to fairness extends to how we use technology. To support our recruitment team, AI tools may be used to help assess applications though they never replace human…
Added 3 mins ago
TO
Camp Coordinator - Inclusion
Town of Oakville
Oakville, ON
- Part-time
…supervision and leadership to the Senior Leaders and Inclusion Support Workers who support campers with…
Added 3 mins ago
TO
Camp Coordinator
Town of Oakville
Oakville, ON
- Part-time
Support the objectives and philosophies of the camps as established by the Recreation and Culture department.
Added 3 mins ago
TO
Camp Senior Leader - Inclusion
Town of Oakville
Oakville, ON
- Part-time
Support the objectives and philosophies of the camps as established by the Recreation and Culture department.
Added 3 mins ago
TO
Camp Senior Leader
Town of Oakville
Oakville, ON
- Part-time
Support the objectives and philosophies of the camps as established by the Recreation and Culture department.
Added 3 mins ago
TO
Camp Inclusion Support Worker
Town of Oakville
Oakville, ON
- Part-time
Reporting to the on-site Senior Leader, the Inclusion Support Workers will assist the on-site Camp Coordinator and full-time staff in the inclusion, support and supervision of campers with…
Added 3 mins ago
HT
Advanced Applications Blow Molding Specialist
Husky Technologies
Bolton, ON
- Full-time
…attracted to bold goals, believe in uncompromising honesty, support mutual respect, care about environmental responsibility, have a passion for excellence and a desire to make a positive…
Added 3 mins ago
TO
Camp Playleader
Town of Oakville
Oakville, ON
- Part-time
Support the objectives and philosophies of the program as established by the Recreation and Culture department.
Added 3 mins ago
HT
Mechanical Designer (Fluidpower)
Husky Technologies
Bolton, ON
- Full-time
…attracted to bold goals, believe in uncompromising honesty, support mutual respect, care about environmental responsibility, have a passion for excellence and a desire to make a positive…
Added 3 mins ago
HT
Internal Auditor (Business Control & IT)
Husky Technologies
Bolton, ON
- Full-time
…attracted to bold goals, believe in uncompromising honesty, support mutual respect, care about environmental responsibility, have a passion for excellence and a desire to make a positive…
Added 3 mins ago
HT
Designer, Development (Mechanical)
Husky Technologies
Bolton, ON
- Full-time
…attracted to bold goals, believe in uncompromising honesty, support mutual respect, care about environmental responsibility, have a passion for excellence and a desire to make a positive…
Added 3 mins ago
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Front of House - Server
Moxies
Sherwood Park, AB
- Full-time
…not have a Labour Market Impact Assessment (LMIA) that would support a foreign worker. Applications will not be accepted via email or in person. We thank all applicants for their interest…
Added 3 mins ago
HT
IT Internal Auditor
Husky Technologies
Bolton, ON
- Full-time
…attracted to bold goals, believe in uncompromising honesty, support mutual respect, care about environmental responsibility, have a passion for excellence and a desire to make a positive…
Added 3 mins ago
CC
Sales Representative- Permanent Full-Time - (Supply Chain and Logistics B2B) - British Columbia
Chit Chats
Vancouver, BC
- Full-time
Work with Sales Manager, Data, Product, and Operations to support more complex pricing or service-fit questions.
Added 3 mins ago
M
FOH Management - Assistant Manager
Moxies
Sherwood Park, AB
- Full-time
…not have a Labour Market Impact Assessment (LMIA) that would support a foreign worker. Applications will not be accepted via email or in person. We thank all applicants for their interest…
Added 3 mins ago
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Front of House - Host/Hostess
Moxies
Sherwood Park, AB
- Full-time
…not have a Labour Market Impact Assessment (LMIA) that would support a foreign worker. Applications will not be accepted via email or in person. We thank all applicants for their interest…
Added 3 mins ago
HT
Product Development Engineer
Husky Technologies
Bolton, ON
- Full-time
…attracted to bold goals, believe in uncompromising honesty, support mutual respect, care about environmental responsibility, have a passion for excellence and a desire to make a positive…
Added 3 mins ago
HT
Applications Engineer
Husky Technologies
Bolton, ON
- Full-time
…attracted to bold goals, believe in uncompromising honesty, support mutual respect, care about environmental responsibility, have a passion for excellence and a desire to make a positive…
Added 3 mins ago
M
Front of House - Bartender
Moxies
Sherwood Park, AB
- Full-time
…not have a Labour Market Impact Assessment (LMIA) that would support a foreign worker. Applications will not be accepted via email or in person. We thank all applicants for their interest…
Added 3 mins ago
CC
Sales Representative- Permanent Full-Time - (Supply Chain and Logistics B2B) - Alberta
Chit Chats
Calgary, AB
- Full-time
Work with Sales Manager, Data, Product, and Operations to support more complex pricing or service-fit questions.
Added 3 mins ago
M
Front of House - Host/Hostess
Moxies
Sherwood Park, AB
- Full-time
…not have a Labour Market Impact Assessment (LMIA) that would support a foreign worker. Applications will not be accepted via email or in person. We thank all applicants for their interest…
Added 3 mins ago
CC
Sales Representative- Permanent Full-Time - (Supply Chain and Logistics B2B) - Ontario
Chit Chats
Toronto, ON
- Full-time
Work with Sales Manager, Data, Product, and Operations to support more complex pricing or service-fit questions.
Added 3 mins ago
C
Optimization & Process Engineering Analyst Co-op (16 Month Term)
CIBC
Toronto, ON
- Full-time
…Optimization (E2E), all of which are seeking co-op students to support ongoing efforts to enhance the delivery of products and services to our clients. As a member of one of these teams,…
Added 3 mins ago
C
Part-Time Seasonal Cast Member - Cineplex Cinemas Dartmouth Crossing
Cineplex
Dartmouth, NS · CPX Dartmouth Crossing
- Part-time
Added 3 mins ago
C
Sr Manager, FP&A – Hydronics
Carrier
Waterloo, ON
- $136,000 to $186,000 CAD / year
- Full-time
We have an exciting opportunity for a Senior Manager of FP&A to support our North America Hydronics business and report to the CFO of Carrier’s North America Residential Solutions. The…

CGI

Développeur(se) C# / C++ – Expert(e) systèmes temps réel

Montreal, QC, Canada

Full-time

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Job details

Job type: Full-time
Apply by: Nov 5, 2026
Posting language: English
Posted: Oct 6, 2026

Original job description

Take high-performance and low-latency development to the next level with CGI

Are you an experienced C++ / C# developer who thrives on solving complex challenges involving real-time systems, low latency, multithreading, parallel computing and distributed architectures?

CGI is looking for a C# / C++ Developer – Real-Time Systems Expert to help design, optimize and modernize mission-critical technology platforms supporting pricing, risk calculation and financial markets activities within a major banking environment.

You will work in a technology ecosystem where performance, scalability, resilience and speed matter. These platforms process significant volumes of data and transactions every day while supporting a broad range of users, including Front Office teams, quantitative risk analysts and risk managers.

Your challenge: build and optimize systems capable of processing increasing volumes of transactions and calculations while meeting demanding performance and regulatory requirements.

Work model: Hybrid – 3 days in the office after the first 2 months

Location: Montréal

Your future duties and responsibilities

As a senior C++ / C# expert, you will play a key role in the evolution and modernization of critical real-time and distributed computing platforms.

Your responsibilities will include:

Design, develop and enhance high-performance services using C++, C# and .NET Core.
Develop and optimize real-time and low-latency C++ components.
Design and optimize parallel algorithms for multicore architectures.
Improve the performance and scalability of multithreaded applications.
Contribute to the architecture and evolution of high-performance distributed systems.
Perform profiling, monitoring, troubleshooting and performance optimization.
Investigate complex performance issues and provide production support for mission-critical systems.
Help redesign and modernize the real-time infrastructure and grid-oriented components.
Contribute to the migration and evolution of computing workloads toward ArmoniK and cloud-based architectures.
Participate in cloud bursting, cloud-native and Kubernetes initiatives.
Collaborate closely with Front Office teams, quantitative analysts, risk teams and technology specialists.
Contribute to the technology roadmap and architectural governance.
Promote software engineering best practices related to code quality, performance, observability, scalability and resilience.

Required Qualifications To Be Successful In This Role

What we’re looking for

Must-have skills

Strong hands-on experience with C++ and C# / .NET Core development.
Proven expertise in real-time and low-latency C++ software development.
Strong knowledge of multithreading, concurrency and parallel programming.
Experience designing and optimizing parallel algorithms for multicore architectures.
Strong experience developing high-performance distributed systems.
Proven expertise in profiling, monitoring and performance optimization.
Experience supporting and troubleshooting complex, production-critical systems.
Strong software design and development practices.
Ability to work independently and take ownership of complex technical challenges.
Excellent communication and collaboration skills.
Strong interest in emerging technologies and modern software engineering practices.

Previous experience with electronic markets, pricing, market making, trading platforms or capital markets technology is highly desirable.

Why join CGI?

This opportunity is ideal for someone who wants to go beyond traditional application development and work on technology where every millisecond matters.

You will tackle real-world challenges involving low latency, parallel computing, high-performance C++, distributed processing and massive scalability, while contributing to systems that directly support critical financial markets activities.

You will also play a role in a major technology transformation combining C++, .NET, distributed computing, Kubernetes and cloud technologies, while collaborating with technology, quantitative and financial markets specialists.

If you enjoy understanding where every millisecond goes and pushing systems to their performance limits, this could be your next challenge at CGI.

Work model: Hybrid – 3 days in the office after the first 2 months

Location: Montréal

Ability to communicate in English, both orally and in writing, is a requirement as the person in this position will need to collaborate regularly with colleagues and partners in Canada and the United States.

CGI is providing a reasonable estimate of the pay range for this role. The determination of this range includes factors such as skill set level, geographic market, experience and training, and licenses and certifications. Compensation decisions depend on the facts and circumstances of each case. A reasonable estimate of the current range is $60,000–$115,000. This role is an existing vacancy.

Together, as owners, let’s turn meaningful insights into action.

Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you’ll reach your full potential because…

You are invited to be an owner from day 1 as we work together to bring our Dream to life. That’s why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company’s strategy and direction.

Your work creates value. You’ll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.

You’ll shape your career by joining a company built to grow and last. You’ll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.

At CGI, we value the strength that diversity brings and are committed to fostering a workplace where everyone belongs. We collaborate with our clients to build more inclusive communities and empower all CGI partners to thrive. As an equal-opportunity employer, being able to perform your best during the recruitment process is important to us. If you require an accommodation, please inform your recruiter.

That same commitment to fairness extends to how we use technology. To support our recruitment team, AI tools may be used to help assess applications though they never replace human judgement. All hiring decisions remain entirely in the hands of our recruitment professionals.

To learn more about accessibility at CGI, contact us via email. Please note that this email is strictly for accessibility requests and cannot be used for application status inquiries.

Come join our team - one of the largest IT and business consulting services firms in the world.

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More about this job

Responsibilities

Design, develop, and optimize high-performance C++ and C#/.NET services, real-time components, parallel algorithms, and distributed systems. Troubleshoot and support mission-critical platforms while contributing to modernization, cloud migration, architectural governance, and engineering best practices.

Requirements

Requires strong hands-on experience with C++ and C#/.NET Core, real-time and low-latency development, multithreading, parallel programming, and high-performance distributed systems. Candidates should also have expertise in profiling and production troubleshooting, strong software engineering and collaboration skills, and the ability to own complex technical challenges; capital markets experience is highly desirable.

Skills

C++
C#
.NET Core
Real-Time Systems
Low-Latency Development
Multithreading
Concurrency
Parallel Programming
Parallel Algorithms
Distributed Systems
Performance Profiling
Performance Optimization
Production Support
Kubernetes
Cloud Computing
Software Architecture

Visa sponsorship

Not detected in the job text

Keywords

C++
C#
.NET Core
Real-Time Systems
Low Latency
Multithreading
Concurrency
Parallel Computing
Parallel Algorithms
Multicore Architectures
Distributed Systems
Performance Profiling
Monitoring
Performance Optimization
Production Support
ArmoniK
Cloud Computing
Cloud Bursting
Cloud-Native Architecture
Kubernetes
Financial Markets
Capital Markets
Pricing
Risk Calculation
Electronic Markets
Trading Platforms
Market Making
Front Office
Observability
Scalability

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