Senior Java Developer

Citibank (Switzerland) AG; Mississauga; Hybrid; Confidential; Full time

Job summary

Citi is seeking a Lead Java Developer with 6+ years of industry experience to spearhead enterprise application development using Java/J2EE and Spring Boot in a technical leadership role. You will mentor a team of junior developers, drive architectural decisions, and push for high performance and secure code.

Strong database and AI integration experience are essential for success. The role emphasizes advanced incident management, code reviews, and collaboration across teams to deliver robust

Qualifications

• 5+ years of progressive experience in software development, with a focus on Java/J2EE enterprise applications.
• Strong analytical and problem-solving skills with ability to resolve production issues.
• Experience with relational databases (Sybase and Oracle) and SQL/PLSQL.
• Expertise in Spring Boot and modern GUI frameworks; leadership experience.

Responsibilities

• Lead design, development, and implementation of complex Java/J2EE enterprise apps using Spring Boot.
• Provide advanced technical support for escalated production issues and root-cause analysis.
• Mentor junior/mid developers, assign tasks, and ensure timely delivery of quality software.
• Drive AI-driven initiatives and stay current with Java/AI innovations.

Skills

Java/J2EE

Spring Boot

Leadership

Root cause analysis

AI integration

Education

Bachelor's or Master's in CS/Engineering

Tools

Git

Maven/Gradle

CI/CD (Jenkins)

Cloud platforms

Job description

Role Overview

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.

Key Responsibilities

Critical Incident Management & Resolution: Provide advanced technical support for escalated issues from production support team. During a production issue, act decisively to identify the root cause and deliver an effective solution. Analyzes applications to identify risks, vulnerabilities, security issues and improve the system performance. Partners with appropriate development and production support areas to prioritize bug fixes and support tooling requirements. Active involvement in and ownership of Support Project items, covering Stability, Efficiency, and Effectiveness initiatives. Ensure seamless integration between various system components and external services.

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.

Required Qualifications

Experience: 5+ years of progressive experience in software development, with a significant focus on Java/J2EE enterprise applications. Core Java: Strong 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). Leadership: Demonstrated experience in leading and mentoring development teams, with strong communication, interpersonal, and problem-solving skills. Tools: Experience with Git, Maven/Gradle, CI/CD pipelines (e.g., Jenkins), and cloud platforms is highly desirable. Education: Bachelor's or Master's degree in Computer Science, Engineering, or a related field.

Preferred Qualifications

Experience with microservices architecture and containerization (Docker, Kubernetes). Familiarity with messaging queues (e.g., Kafka, SOLACE). Experience with test‑driven development (TDD) and behavior‑driven development (BDD). Certifications in Java, Spring, Cloud, or AI technologies.

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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Citi is an equal opportunity employer

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.