Senior Java Developer Jobs in Markham, ON (NOW HIRING)

Senior Java Developer The Opportunity We are seeking an experienced and motivated Senior Java Developer to spearhead the development of robust, scalable, and innovative enterprise applications. The ideal candidate will possess deep expertise in Java/J2EE and Spring Boot, a proven track record of strong technical problem-solving, and exceptional leadership skills. This is a key role where you will not only lead development efforts but also help shape our technical future by integrating cutting-edge AI technologies into our solutions.

If you are a forward-thinking developer with a passion for building high-quality software and mentoring others, we would love to hear from you. Your Responsibilities Technical Leadership & Strategy Lead Feasibility & Estimation: Conduct feasibility studies, provide accurate time and cost estimates, and define the scope for new application systems and programs. Act as a Subject Matter Expert (SME): Serve as a go-to expert for Java development, advising senior stakeholders and team members on best practices, architectural decisions, and complex technical challenges.

Drive System Improvements: Analyze complex problems, evaluate business and system processes against industry standards, and make evaluative judgments to recommend and implement improvements. Ensure Security & Compliance: Recommend and develop security measures in post-implementation analysis and ensure all solutions comply with applicable laws, rules, and regulations. Development & Implementation End-to-End Ownership: Monitor and control all phases of the development process, including analysis, design, construction, testing, and implementation.

Build & Maintain Applications: Develop, test, and deploy new or revised applications to meet specific business needs and user requirements. Provide Technical Support: Offer user and operational support on applications, and consult with users, clients, and other technology groups to resolve issues and recommend advanced programming solutions. Define Standards: Ensure essential procedures are followed and contribute to defining and refining operating standards and processes for the development team.

Mentorship & Collaboration Coach & Mentor: Serve as an advisor and coach to new or junior developers, helping them grow their skills and careers. Collaborate Across Teams: Work closely with business users, product owners, and other technology teams to ensure alignment and successful project delivery. Required Qualifications & Skills Experience: 5+ years of professional Java development experience, with substantial exposure to cloud-based environments and distributed systems.

Core Java Expertise: Expert-level command of Java, J2EE, RESTful API design, and cloud engineering principles. Frameworks: Hands-on experience building production-grade services using Spring and Spring Boot. Databases: Solid database experience with relational systems (e.g., Oracle, SQL) and familiarity with NoSQL technologies (e.g., MongoDB)

Cloud & Messaging: Practical experience with cloud-native platforms like OpenShift and Kubernetes, and messaging technologies such as MQ and Kafka. Software Craftsmanship: A deep commitment to clean code principles, design patterns, and test-driven development (TDD) practices that produce maintainable, production-ready software. Agile & DevOps: Fluency in Agile methodologies and the full software development lifecycle, with hands-on experience building and maintaining CI/CD pipelines.

Leadership: Demonstrated ability to lead technical delivery autonomously, manage competing priorities, and perform effectively under pressure in a fast-paced environment. Education Bachelor's degree/University degree in Computer Science, Engineering, or a related field, or equivalent professional experience. This job description provides a high-level review of the types of work performed.

Other job-related duties may be assigned as required. ------------------------------------------------------ Job Family Group: Technology ------------------------------------------------------ Job Family: Applications Development ------------------------------------------------------ Time Type: Full time ------------------------------------------------------ Primary Location Full Time Salary Range: $94 300,00 - $141 500,00 ------------------------------------------------------ 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.

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