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Senior Developer Canada, Mississauga Jobs

90 Job Offers

Senior React/.NET/SQL Server Full Stack Developer - Vice President
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Senior Full Stack Developer (VP) sought in Mississauga, Canada. Leverage 6+ years of expertise in .NET/C#, React, and SQL Server to design and maintain high-impact web applications. Contribute to cutting-edge Generative AI initiatives using Python. Join a collaborative team offering robust traini...
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Location
Canada , Mississauga
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Salary
120800.00 - 170800.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Senior Java Developer
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Senior Java Developer sought by Citi in Mississauga, Canada to drive critical Capital Markets technology. Leverage expertise in Java 17, Spring Boot, Kafka, and Kubernetes to design and implement high-impact applications. Ideal for a problem-solver with 4+ years of experience, strong CI/CD knowle...
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Location
Canada , Mississauga
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Salary
94300.00 - 141500.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Senior Java Developer - Assistant Vice President
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Senior Java Developer (AVP) role in Mississauga, Canada. Leverage 5-10 years of expertise in Core Java, Spring Boot, and Microservices to design high-performance, low-latency applications. Collaborate on full development lifecycle, ensuring scalability and reliability. AI/ML knowledge (Spring AI)...
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Location
Canada , Mississauga
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Salary
94300.00 - 141500.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Senior Java Developer
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Senior Java Developer sought for Global Spread Products Technology in Mississauga, Canada. You will design and build strategic, state-of-the-art server-side solutions using Java, Microservices, and Docker within an Agile/DevOps environment. Ideal candidates bring 5-8 years of experience, strong U...
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Location
Canada , Mississauga
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Salary
94300.00 - 141500.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Senior Java Developer
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Senior Java Developer sought for a global team in Mississauga, Canada. You will design, build, and maintain high-quality, scalable applications using Spring Boot, Microservices, and Hibernate. Requires 5+ years of core Java experience, strong SQL skills, and familiarity with OpenShift Kubernetes ...
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Location
Canada , Mississauga
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Salary
94300.00 - 141500.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Senior UI Developer
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Senior UI Developer role in Mississauga, Canada, seeking an expert in Angular (8+) and Micro Frontend architecture. You will lead a team, define UI/UX strategy, and build scalable enterprise applications using TypeScript, HTML5, and CSS3. This position offers the chance to drive innovation with R...
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Location
Canada , Mississauga
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Salary
120800.00 - 170800.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Ibm Bpm Senior Lead Developer
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Senior IBM BPM Lead Developer sought in Mississauga, Canada to lead applications systems analysis and programming. Requires 6-10 years of experience with IBM BPM BAW 22+, Mongo, Oracle, and Microservices. You will drive process model (BPMN) improvements, integrate complex systems, and resolve hig...
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Location
Canada , Mississauga
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Salary
120800.00 - 170800.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Senior UI Developer
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Senior UI Developer sought in Mississauga, Canada to design and maintain high-quality portal solutions. Requires 5-8 years of experience with React, Angular, Node.js, JavaScript, HTML5, and CSS preprocessors like SCSS. Expertise in single-page applications, UX wireframing (Balsamiq), and integrat...
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Location
Canada , Mississauga
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Salary
94300.00 - 141500.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Senior Java Back End Developer
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Senior Java Back End Developer sought in Mississauga/Toronto, Canada. Leverage 6-8 years of experience in application development, system analysis, and project management. This role requires deep expertise in Java and Kafka, plus leadership skills to deliver complex software solutions. Join a glo...
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Location
Canada , Mississauga, Ontario, Canada, Toronto, Ontario, Canada
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Salary
94300.00 - 141500.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Equities Cash Order Management Senior Java Developer - Vice President
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Senior Java Developer role at Citi in Mississauga, building and enhancing the global Equities Cash Order Management platform. You will drive critical trading functionality for equities, derivatives, and algorithmic trading, collaborating with front-office desks. Requires 10+ years of core Java ex...
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Location
Canada , Mississauga
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Salary
120800.00 - 170800.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Senior Java Developer
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Senior Java Developer sought for Fixed Income Trading Services in Mississauga, Canada. You will design and implement Par Loan Trading systems using Spring Boot, Kafka, and Docker. Requires 5+ years in Java distributed development, real-time messaging, and containerization. Join a global team to d...
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Location
Canada , Mississauga
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Salary
94300.00 - 141500.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Senior Java Developer
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Senior Java Developer sought by Citi in Mississauga, Canada, to drive engineering excellence across a global financial institution. You will champion cultural change, embed best practices, and reduce cycle time using DORA metrics. Requires 6+ years in Java/Spring Boot, CI/CD pipelines, and Gen AI...
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Location
Canada , Mississauga
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Salary
120800.00 - 170800.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Senior Java Developer
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Senior Java Developer sought in Mississauga, Canada, for a critical role designing and implementing distributed, microservice-based systems. Leverage 7+ years of Java expertise, including Spring Boot, RESTful services, and cloud architectures (AWS, Docker, Kubernetes). Drive full SDLC phases from...
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Location
Canada , Mississauga
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Salary
94300.00 - 141500.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Senior Java Developer - Vice President
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Senior Java Developer – Vice President role in Mississauga, Canada. Lead enterprise application development with 6+ years of experience in Java, Spring Boot, Microservices, Angular, and Kafka. Drive Agile delivery, mentor teams, and manage complex integrations across platforms like CitiKYC. Hands...
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Location
Canada , Mississauga
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Salary
120800.00 - 170800.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Senior Java Developer
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Senior Java Developer sought by Citi in Mississauga, Canada, to drive engineering excellence across a global financial institution. This individual contributor role blends hands-on Spring Boot development with championing DevSecOps, CI/CD pipelines, and AI integration. You will evangelize DORA me...
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Location
Canada , Mississauga
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Salary
120800.00 - 170800.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Senior Java Developer – Vice President
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Senior Java Developer – Vice President role in Mississauga, Canada. Lead enterprise application development with 6+ years of experience in Java, Spring Boot, Microservices, Kafka, and NoSQL. Drive Agile delivery, mentor teams, and design scalable integrations. Competitive benefits and senior-leve...
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Location
Canada , Mississauga
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Salary
120800.00 - 170800.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Senior Java Developer
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Senior Java Developer sought by Citi to drive engineering excellence across global teams. This individual contributor role blends hands-on Spring Boot development with cultural transformation, championing DORA metrics and AI integration. Based in Mississauga, Canada, you'll reduce cycle time and ...
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Location
Canada , Mississauga
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Salary
120800.00 - 170800.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Senior .NET Developer
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Senior .NET Developer sought for a key role in Mississauga, Canada. You will architect enterprise-wide solutions using C#, .NET Core 8+, and Angular 12+. Requires 8+ years of experience, including 2 in solution architecture, with expertise in NoSQL (MongoDB) and REST APIs. Join a dynamic team to ...
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Location
Canada , Mississauga
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Salary
94300.00 - 141500.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Senior Full Stack Java Developer – Assistant Vice President
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Senior Full Stack Java Developer (AVP) sought in Mississauga, Canada to build the future of a global client onboarding platform. You will design high-performance microservices and real-time APIs using Java, Spring, and ReactJS, while leveraging messaging middleware like Kafka. This role demands 5...
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Location
Canada , Mississauga
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Salary
94300.00 - 141500.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Senior Lead Java Developer
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Location
Canada , Mississauga
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Salary
145100.00 - 217700.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
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About the Senior Developer role

Senior Developer Jobs represent the pinnacle of technical expertise and leadership within software engineering teams. Professionals in these roles are seasoned experts who not only write high-quality code but also architect complex systems, guide technical strategy, and mentor less experienced engineers. They are the crucial bridge between high-level business objectives and practical, robust technical implementation, ensuring that software solutions are scalable, secure, and aligned with long-term organizational goals.

Typically, a Senior Developer is responsible for the entire software development lifecycle of significant components or applications. This includes leading the design and architecture of new systems, often leveraging modern paradigms like microservices and event-driven architecture. They write, review, and debug complex code, setting standards for quality and maintainability. A key part of their role involves making pivotal technology stack decisions, selecting frameworks, databases, and tools that best fit project requirements. They collaborate closely with cross-functional teams, including product managers, business analysts, and other stakeholders, to translate business needs into technical specifications. Furthermore, Senior Developers are expected to drive best practices in coding, testing, and deployment, frequently overseeing CI/CD pipelines and advocating for DevOps and security principles (DevSecOps).

The common skill set for these jobs is both deep and broad. Mastery of one or more core programming languages (such as Java, Python, C#, or JavaScript) and their associated ecosystems is fundamental. Expertise in relevant frameworks (e.g., Spring Boot, .NET Core, React, Angular) is essential. Senior Developers possess a strong grasp of system design principles, database management (both SQL and NoSQL), and API design (REST, GraphQL). Experience with cloud platforms (AWS, Azure, GCP), containerization (Docker), and orchestration (Kubernetes) is increasingly standard. Beyond technical prowess, soft skills are critical: leadership, clear communication, effective mentorship, problem-solving, and the ability to manage time and priorities across multiple projects are what distinguish a senior professional.

Typical requirements for Senior Developer jobs often include a bachelor’s degree in computer science or a related field (or equivalent practical experience) and a substantial track record, usually between 5 to 10+ years of progressive software development experience. Demonstrated experience in leading development initiatives, making architectural decisions, and working within Agile/Scrum methodologies is commonly sought. The role demands a proactive, strategic thinker who stays abreast of emerging technologies and can drive innovation while ensuring system reliability and performance. For those seeking to advance their impact beyond pure coding into areas of design, strategy, and team leadership, exploring Senior Developer jobs is the definitive next step in a thriving tech career.