Sr Java Microservices Developer Jobs in Mississauga, ON

This is a Senior Java Developer position responsible for leading the design, development, and deployment of scalable, high-performance enterprise applications. The overall objective of this role is to collaborate with cross-functional teams to deliver business requirements and mentor junior engineers. Responsibilities: Take complete ownership of business initiatives from inception to production.

Collaborate with product managers and business stakeholders to define scope, estimate effort, and identify technical dependencies. Resolve variety of high impact problems/projects through in-depth evaluation of complex business processes, system processes, and industry standards Translate complex business requirements into scalable, resilient, and secure technical designs Utilize advanced knowledge of system flow and develop standards for coding, testing, debugging, and implementation Define, maintain, and promote robust architectural patterns, coding standards, and best practices for large-scale, high-throughput enterprise web applications. Provide in-depth analysis with interpretive thinking to define issues and develop innovative solutions Serve as advisor or coach to mid-level developers and analysts, allocating work as necessary Conduct rigorous code reviews, mentor junior and mid-level developers, and foster a culture of continuous learning and technical excellence Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency.

Qualifications: 10+ years of professional experience in software engineering and application development Deep, authoritative knowledge of core Java, including multi-threading, concurrency, memory management, and performance tuning Extensive hands-on experience with Spring Framework and Spring Boot. Strong understanding of RESTful API design, microservices architecture, enterprise integration patterns and web application security risks. Strong proficiency in Oracle Database, including advanced SQL, PL/SQL development, query optimization, indexing strategies, and database schema design.

Proven expertise in designing, deploying, and managing scalable microservices within containerized environments, with hands-on experience in orchestration platforms such as Red Hat OpenShift, AWS ECS, or Kubernetes. Experience in implementing and managing distributed caching solutions such as Hazelcast or Redis to optimize application performance, manage session state, and reduce database load Ability to adjust priorities quickly as circumstances dictate Consistently demonstrates clear and concise written and verbal communication 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.

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