Full Stack Application Developer Jobs in Toronto, ON

The Full Stack Application Developer is responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to lead applications systems analysis and programming activities. Key Responsibilities: Design and development of complex systems using Spring, Spring Boot and Spring Cloud, React/Angular ,Workflow technologies.

Architect and implement microservices-based solutions with focus on scalability, reliability and performance. Apply TDD and test-first development practices across all development stages. Collaborate with cross-functional teams to define, design and deliver new features.

Guide the integration and optimization of Oracle and MongoDB in high-performance environments. Ensure high quality through effective code reviews, static code analysis and performance optimization. Mentor and guide junior developers and contribute to a culture of continuous improvement.

Stay up-to-date with emerging technologies and industry trends, advocating for their adoption where appropriate. Required Skills: Strong-level proficiency in React.js: Demonstrated experience building complex, dynamic, and performant user interfaces. Deep understanding of React ecosystem, state management (e.g., Redux, Context API), and component lifecycle

Strong proficiency in Node.js: Experience designing and implementing scalable RESTful APIs and microservices. Strong proficiency in Java and Spring Boot: Proven experience in building enterprise-grade back-end applications and services. Proven experience in designing and building complex dynamic rendering frameworks/systems

Understanding of server-side rendering (SSR), client-side rendering (CSR), and hydration techniques. Solid understanding and hands-on experience with Microservices Architecture and best practices. Proficient in Hibernate, JPA and working with both relational (Oracle) and NoSQL(MongoDB) databases Experience with Redis or equivalent for caching and performance optimization.

Proven experience with Test-Driven Development (TDD) and Sift-Left testing strategies. Hands-on experience with test automation tools/frameworks such as Junit, Mockito, REST Assured, Cucumber or Selenium. String understanding of application performance, monitoring and optimization techniques.

Excellent problem-solving skills and ability to lead complex development tasks. Excellent communication and interpersonal skills, with the ability to effectively collaborate with cross-functional teams. Preferred Skills: Exposure to API Gateways, Service Discovery and Distributed Tracing Exposure to Continuous Integration and Continuous Delivery (CI/CD) pipelines, either on-premise or public cloud (i.e., Tekton, Harness, Jenkins, etc.)

Familiarity with DevOps Practices and containerization tools like Docker and orchestration with Kubernetes. Experience with code quality tools (e.g. SonarQube, Checkmarks) Understanding of security best practices for backend development (OAUth2, JWT, Spring Security) Proven leadership and team collaboration skills

String communication and stakeholder management. Ability to balance technical depth with business priorities. Passion for high-quality, clean and maintainable code.

Qualifications: 6-10 years of relevant experience Experience in systems analysis and programming of software applications Experience in managing and implementing successful projects Demonstrated leadership skills Proven project management skills Expertise in industry practices and standards of application architecture role Consistently demonstrates clear and concise written and verbal communication Ability to work under pressure and manage deadlines or unexpected changes in expectations or requirements Education: Bachelor's degree/University degree or equivalent experience ------------------------------------------------------ Job Family Group: Technology ------------------------------------------------------ Job Family: Applications Development ------------------------------------------------------ Time Type: Full time ------------------------------------------------------ Primary Location Full Time Salary Range: $120,800.00 - $170,800.00 ------------------------------------------------------ Most Relevant Skills Please see the requirements listed above. ------------------------------------------------------ Other Relevant Skills For complementary skills, please see above and/or contact the recruiter. ------------------------------------------------------ Automated Processing and AI We use automated processing, including artificial intelligence, for our legitimate business interests (or our reasonable and appropriate business purposes) to identify and align the candidate's skills and abilities with a specific job opening

Additionally, if you so choose, or consent, we can match your skills and abilities to other suitable roles at Citi. Importantly, all our hiring processes and decisions, including determining your suitability for a role, are conducted, checked, and decided by individuals. Our automated processing and AI do not involve relying on automatic or autonomous decision-making.

Please refer to any Jurisdictional Considerations, with specific provisions for your country (where relevant) for further details. ------------------------------------------------------ This job opening is for an existing job vacancy. ------------------------------------------------------ Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

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