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Added 24 mins ago
CS
AI Security Technical Program Manager
CONFLUX SYSTEMS
Toronto, ON
- $50 to $55 CAD / hour
- Contract
· Work closely with technical teams developing and integrating AI agents, LLMs, APIs, security tools, automation frameworks, cloud environments, containers, and security test environments.
Added 26 mins ago
H
Senior Software Engineer - AI/ML
Hach
London, ON · Vancouver, BC · CAN - Vancouver - Aquatic Informatics ULC
- $120,000 to $145,000 CAD / year
- Full-time
Build and operate cloud-native services on AWS and Azure that scale with demand.
Added 40 mins ago
S
Senior Data Engineer
Scene+
Toronto, ON
- Full-time
…elevate the performance, reliability, and governance of our cloud-native…
Added 1 hour ago
M
Cloud & AI Solution Engineer
Microsoft
Toronto, ON
- Full-time
You also apply strong networking knowledge to design hybrid and cloud-native solutions, including virtual networks, VPNs, and secure routing architectures that meet enterprise performance…
Added 1 hour ago
M
Innovative Data Platform Solution Engineer
Microsoft
Toronto, ON
- Full-time
…deploy, and manage database and analytics applications in a cloud-native…
Added 3 hours ago
AI
Senior React Native Developer
AI Interviews
Toronto, ON · Greater Toronto Area, Canada
- Contract
We are seeking a Senior/Lead React Native Engineer with 8+ years of mobile engineering and 5+ years of production React Native experience.Strong expertise in React Native 0.76+, New…
Added 4 hours ago
M
Senior Full Stack Java Engineer
Miratech
Canada
- Full-time
We are looking for a Senior Full Stack Engineer to design, develop, and support scalable cloud-native applications that power Workforce Management (WFM), Customer Experience (CX), and…
Added 4 hours ago
M
Senior Full Stack Java Engineer - Workforce Management (WFM)
Miratech
Canada
- Full-time
Containerize services and contribute to cloud-native deployment patterns, configuration management, and environment consistency.
Added 4 hours ago
M
Senior Routing Engine Developer (CX Platform)
Miratech
Canada
- Full-time
We are looking for a Senior Routing Engine Developer to design and build the next generation interaction routing platform powering enterprise-scale contact center operation. You will…
Added 4 hours ago
M
Senior Full Stack Java Engineer
Miratech
Canada
- Full-time
We are looking for a Senior Full Stack Engineer to design, develop, and support scalable cloud-native applications that power Workforce Management (WFM), Customer Experience (CX), and…
Added 4 hours ago
M
Senior Full Stack Java Engineer - Workforce Management (WFM)
Miratech
Canada
- Full-time
Containerize services and contribute to cloud-native deployment patterns, configuration management, and environment consistency.
Added 5 hours ago
H(
Technical Lead, API & Integration Engineering
HOOPP (Healthcare of Ontario Pension Plan)
Toronto, ON · CA ON Toronto
- $103,000 to $153,000 CAD / year
- Full-time
Build and evolve RESTful APIs and integration services using .NET Core, Azure cloud functions or serverless services, or equivalent AWS or GCP capabilities.
Added 5 hours ago
Software Engineer, Web3 Backend
Robinhood
Toronto, ON
Expertise in backend development using languages such as Go, Python, or Java, with a solid grasp of cloud-native architectures.
Added 5 hours ago
S
Software Developer – Web/Cloud Application, Co-op
Semtech
Richmond, BC · CAN - Richmond, BC
- Full-time
Integrating and configuring sub-systems within a cloud-native environment
Added 5 hours ago
A
Test Automation Analyst
Accenture
Mississauga, ON · Montreal, QC
- Full-time
…design, development, testing, and support of modern web and cloud-native applications. Working alongside experienced engineers, you will help deliver high-quality solutions through…
Added 6 hours ago
SL
Data Scientist
Sun Life
Toronto, ON · Waterloo, ON · Sun Life Toronto One York
- Full-time
Architecture: Strong understanding of APIs, microservices architecture, and cloud-native development
Added 8 hours ago
M
Senior Full Stack Java Engineer - Workforce Management (WFM)
Miratech
Canada
- Full-time
Containerize services and contribute to cloud-native deployment patterns, configuration management, and environment consistency.
Added 8 hours ago
M
Senior Full Stack Java Engineer - CX & Contact Center Solutions
Miratech
Canada
- Full-time
…TypeScript, API-first design, event-driven architecture, and cloud-native practices while remaining directly involved in critical engineering work. The role includes designing, developing…
Added 8 hours ago
M
Senior Full Stack Java Engineer - Workforce Management (WFM)
Miratech
Canada
- Full-time
Containerize services and contribute to cloud-native deployment patterns, configuration management, and environment consistency.
Added 8 hours ago
M
Senior Full Stack Java Engineer - Workforce Management (WFM)
Miratech
Canada
- Full-time
Containerize services and contribute to cloud-native deployment patterns, configuration management, and environment consistency.
Added 8 hours ago
H
Senior Full Stack Engineer (Azure Cloud Platform)
HCLTech
Calgary, AB
- Full-time
We are looking for a hands-on Senior Cloud-Native Full Stack Engineer to design, build, and support secure, scalable applications on Microsoft Azure. This role combines modern full-stack…
Added 8 hours ago
NS
C++ / C# .Net Core Developer – Pricing & Risk Services (Real-Time, Grid, Cloud)
Novaren Solutions
Montreal, QC
- Full-time
Calculations are being migrated from IBM Symphony to a new open-source, cloud-compatible grid manager. The real-time framework (streaming, contribution, pre-trade), designed for low-latency…
Added 9 hours ago
M
Senior Full Stack Java Engineer - Workforce Management (WFM)
Miratech
Canada
- Full-time
Containerize services and contribute to cloud-native deployment patterns, configuration management, and environment consistency.
Added 9 hours ago
M
Senior Full Stack Java Engineer - CX & Contact Center Solutions
Miratech
Canada
- Full-time
…TypeScript, API-first design, event-driven architecture, and cloud-native practices while remaining directly involved in critical engineering work. The role includes designing, developing…
Added 9 hours ago
V
Mobile Application Developer - Consumer Social Platform
VAZA
Toronto, ON · Greater Toronto Area, Canada
- Full-time
We're looking for a Full Stack Mobile Software Engineer to build and scale VAZA's native iOS and Android apps. You'll work directly with the founding team to ship new features, sharpen…

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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