Lead Full Stack Java Developer Job at Citi (Dublin)

Lead Full Stack Java Developer

Citi

Location:
Ireland , Dublin

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Not provided

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Job Description:

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech. This team supports and develops key applications globally using the most UpToDate technologies combining it with the ones already proved. You can work with people in many regions while based in Dublin. This role will be responsible for designing, developing, and maintaining scalable Java applications with future focus on AI/ML integration on new or revised application systems and programs in coordination with the Technology Team.

Job Responsibility:

Responsible for design and leading development as a full stack java to build very high-volume, low-latency enterprise applications that can adapt and scale to changing market conditions
Understanding the impact of adapting different architectures and designs and present the same to all relevant stakeholders
Management of both functional and technical requirements while deciding on technical solutions
Development of solutions following established technical design, application development standards and quality processes in projects
Understanding the client requirements and envision the solution that can be captured as respective user stories in JIRA
Work with large datasets and develop efficient algorithms for data processing and analysis
Collaborate with cross-functional teams to identify and prioritize project requirements
Implement AI/ML models using popular frameworks and libraries
Ensure high-quality code delivery with robust testing and validation
Work with Production Service/Support to resolve issues
Stay up to date with new development tools and strategies

Requirements:

6-10 years of experience as a Senior Java Developer with hands on end-to-end solutions
Java 8+ with strong expertise in Spring, Hibernate, and Java-based frameworks
Expert in Java microservice based architecture and REST APIs
Knowledge in data processing and storage solutions like Apache Hadoop, Spark, and/or NoSQL databases
Experience in working with in memory database and cache like Redis
Strong understanding of data structures, algorithms, and software design patterns
Fluency in English
Excellent verbal and written communication skills, enabling effective collaboration with cross-functional teams, stakeholders, and management
Proven ability to effectively use complex analytical, interpretive and problem-solving techniques and execute plan
Passion and commitment for process and design simplification
Bachelor’s degree/University degree or equivalent experience

Nice to have:

Experience with popular AI/ML libraries like LangChain4j or Spring AI
Knowledge of Redis Vector DB or Elasticsearch for efficient data retrieval
Experience with cloud platforms like AWS, Azure, or Google Cloud
Familiarity with Agile development methodologies and version control systems like Git
Familiarity with AI/ML technologies, including: Machine Learning frameworks like Weka, Deeplearning4j, or TensorFlow Java API
Deep Learning architectures like CNNs, RNNs, or Transformers
Natural Language Processing (NLP) techniques and libraries like Stanford CoreNLP or OpenNLP
Master’s degree preferred

What we offer:

Competitive base salary (which is annually reviewed)
Additional benefits that support you (and your family) to be well, live well and save well
Business casual workplace
Hybrid working model (up to 2 days working at home per week)

Additional Information:

Job Posted:
December 28, 2025

Employment Type:

Fulltime

Work Type:

Hybrid work

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Lead Full Stack Java Developer

Citi

Location:
Ireland , Dublin

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
December 28, 2025

Looking for more opportunities? Search for other job offers that match your skills and interests.

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