We are seeking a highly experienced and motivated Lead Java Developer with 6+ years of industry experience to spearhead the development of robust, scalable, and innovative enterprise applications. The ideal candidate will possess deep expertise in Java/J2EE and Spring Boot. This role demands a proven track record with strong technical problem-solving and root cause analysis abilities, relational databases such as Sybase and Oracle, exceptional team leadership skills, and a forward-thinking approach to integrating AI technologies into our solutions. You will lead a team of junior developers, providing technical guidance, mentorship, and fostering a collaborative and high-performing environment.

Critical Incident Management & Resolution: Provide advanced technical support for escalated issues from production support team. Analyzes applications to identify risks, vulnerabilities, security issues and improve the system performance. Active involvement in and ownership of Support Project items, covering Stability, Efficiency, and Effectiveness initiatives. Technical Leadership & Architecture: Lead the design, development, and implementation of complex Java/J2EE-based enterprise applications using Spring Boot. Define and enforce coding standards, best practices, and architectural patterns to ensure high-quality, maintainable, and scalable solutions. Conduct code reviews, provide constructive feedback, and ensure adherence to security and performance standards. Act as a subject matter expert for Java technologies, providing technical direction and problem-solving expertise.

Team Management & Mentorship: Lead, mentor,



and guide a team of junior and mid-level developers, fostering their technical growth and career development. Assign tasks, monitor progress, and ensure timely delivery of high-quality software. Promote a culture of collaboration, continuous improvement, and knowledge sharing within the team. Conduct performance reviews and provide regular feedback to team members.

Innovation & AI Integration: Lead initiatives to prototype and implement AI-driven solutions within existing or new applications. Stay abreast of emerging technologies and industry trends, particularly in Java and AI, to drive innovation.

Experience: 5+ years of progressive experience in software development, with a significant focus on Java/J2EE enterprise applications. Core Java: Robust proficiency in Java/J2EE, including advanced concepts like multithreading, concurrency, and data structures. Analytical Skills: Exceptional analytical and problem-solving skills, with a proven ability to dissect complex technical issues, identify root causes, and drive effective solutions in high-pressure production environments. Databases: In-depth knowledge and hands‑on experience with relational databases, specifically Sybase and Oracle, including SQL, PL/SQL, database design, and performance tuning. Frameworks:



Expert-level knowledge and hands‑on experience with Spring Boot, including Spring MVC, Spring Data, Spring Security, etc. Front-End/GUI: Demonstrated experience with modern GUI technologies (e.g., Angular, React, Vue.js) and associated web technologies (HTML5, CSS3, JavaScript, TypeScript). Tools: Experience with Git, Maven/Gradle, CI/CD pipelines (e.g., Education: Bachelor's or Master's degree in Computer Science, Engineering, or a related field.

Experience with test‑driven development (TDD) and behavior‑driven development (BDD). Certifications in Java, Spring, Cloud, or AI technologies.

Full time

Full Time Salary Range: $94,300.00 - $141,500.00

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. Our automated processing and AI do not involve relying on automatic or autonomous decision-making. 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. If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi. View Citi’s EEO Policy Statement and the Know Your Rights poster.

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📌 Senior Java Architect (full-time) (Mississauga)
🏢 Citigroup
📍 Mississauga