Top C++ Jobs in Montreal

Lead design and development of scalable, cloud-native financial and reconciliation systems on GCP. Own architecture, drive technical decisions, mentor engineers, embed AI and automation, collaborate with product and QA, and ensure reliability, performance, and test automation.

Develop and maintain full-stack web application features, microservices, APIs, and front-end components using .NET Core, C#, TypeScript, Angular, and React. Design scalable solutions, apply OWASP and CWE/SANS Top 25 security practices, navigate complex business rules, critically evaluate AI-generated code, create unit tests, and collaborate with product and QA teams. Document code in French and work bilingually in French and English.

Lead development of core client systems and engine-level infrastructure in Unity/C#. Diagnose and fix cross-cutting performance issues, upgrade third-party SDKs, evolve build tooling, produce design docs, scope multi-week infrastructure initiatives, mentor engineers, and drive profiling, optimization, and architecture changes to enable future features.

Develop, test, and maintain C++ applications for ultra-low-latency exchange connectivity in a Linux environment. Participate in design reviews, automation and CI/CD, collaborate with team members, and use Python scripting and modern AI tools to improve workflows and software quality.

Senior C# developer for CBC/Radio-Canada's OTT team to design, build and maintain reusable backend components (audio/video player APIs), ensure quality and performance, participate in Agile ceremonies, code reviews, deployments, and propose technical solutions. Work in bilingual (EN/FR) environment.

Design, develop, and optimize complex C++ applications for safety-critical systems. Define architectures, build UIs and data-processing algorithms, apply TDD/BDD and QtTest/Google Test, perform code reviews, document designs, collaborate with multidisciplinary teams, and support V&V and hardware teams with tooling.

The Software Developer will work on a world-class enterprise video surveillance solution, participating in design, development, and task planning while collaborating with quality assurance members. Responsibilities include developing new features, architecting solutions, and engaging in peer programming.

As a Software Developer, you'll design, develop, and deploy web applications using cutting-edge technologies, collaborating closely with UX designers and other teams to enhance user experience.

The role involves developing pricing models in C++, enhancing credit risk data infrastructure, and collaborating with strategists to meet business requirements.

Develop and modernize a mission-critical telecommunications call-handling platform. Responsibilities include migrating C++ subsystems from 32-bit to 64-bit, upgrading CentOS 7 systems to RHEL 9, supporting Java configurators, updating CI/CD and DevOps tooling, testing releases, and remediating security issues. The contractor will work independently within an established engineering team through Q1 2027.

Build and maintain cloud-native services, APIs, and platform capabilities. Design, implement, test, and troubleshoot scalable SaaS/backend systems. Collaborate with product, UX, and engineering teams, participate in code reviews, agile delivery, and continuous learning.

Design, develop, and maintain Guidewire-based P&C solutions. Lead medium-to-large feature development, create implementation and troubleshooting plans, perform unit testing, guide junior developers, and resolve application defects.

Design, develop, and optimize modern C++ code for a high-throughput indexing and search engine. Improve performance, scalability, and reliability by addressing memory management, concurrency, data structures, and distributed processing. Analyze bottlenecks, implement optimizations, and collaborate with engineering, data science, and product teams to build core indexing capabilities for AI-powered search.

Build and maintain scalable, cloud-native APIs using .NET. Enhance core platform components, lead architecture and testing discussions, optimize telemetry and performance, collaborate cross-functionally, conduct code reviews, and mentor team members.

As a Software Engineer, you will develop and maintain the Tally software stack, enhance robot navigation and autonomy, and support CI/CD processes.

Integration Engineer for a high-throughput, real-time trading system. Manage production environment, deploy upgrades, design trading functionality, troubleshoot production issues, script with Perl/Shell, work with Linux-based C++ services and Java/C# front ends, and collaborate with traders and the team.

Build the new ShareGate Migrate web app as a senior full-stack developer using React, TypeScript, and C#/.NET. Ship full-stack features, shape technical choices, integrate Microsoft APIs (Graph, Azure AD/Entra ID, MSAL), mentor teammates, anticipate risks, and use AI-assisted development tools to accelerate delivery and quality.

Develop and support high-throughput C++ transaction/event processing software on Linux/UNIX. Implement threading, interprocess communication, and XML-based messaging. Contribute to delivery, debugging, and production support of performance-sensitive systems.

Develop high-performance C++ market-data components (feed handlers, parsers, value-add servers) across asset classes. Optimize for low-latency, handle TCP/multicast, implement multithreading, memory management, and I/O on Linux. Debug and profile with gdb and performance tools. Work quickly in a fast-paced environment and communicate clearly in English.

Design and implement a high-frequency trading platform, optimize for latency, develop market data systems, and create analysis tools.

Develop and maintain modern microservices using C#, ASP.NET, and NoSQL databases. Involve in CI/CD processes and contribute to full-stack development within a collaborative team.

Develop and maintain web application features using C#/ASP.NET Core and TypeScript/Angular. Diagnose and fix bugs, resolve production issues, write automated tests, improve architecture, performance and maintainability, and collaborate with QA and UX teams. Participate in continuous improvement of team practices and complete a foundational programming course during the first year.

As a Sr. Software Engineer, you'll design and develop features for a SaaS platform, collaborate with teams, tackle technical problems, and ensure high-quality solutions with an ownership mindset.

Design, build, test, and maintain enterprise C#/.NET applications within agile teams. Develop scalable REST APIs and data models, write automated unit tests, enforce SOLID/OOP practices, mentor engineers, participate in planning/code reviews, and communicate with clients to deliver high-quality solutions.

Join a team focused on computer vision and machine learning projects as an expert C++ developer, impacting leading global companies.