Full-Stack Developer (Java) - Enterprise Applications Job at Citi (Warsaw)

Senior Java Full-Stack Developer

We are looking for a Full stack core software engineer with deep understanding o...

Location

India , Chennai; Pune

Salary:

Not provided

Citi

Expiration Date

Until further notice

Requirements

7+ years of industry experience with strong hands-on experience in development of mission-critical applications using Java/Python technologies
Experience with complex system integration projects
Java, Spring, Spring Boot, Spring Cloud, J2EE Design Patterns, REST services
Front End Technologies like JavaScript and Angular version, CSS2/CSS3, HTML
Strong Knowledge of SQL, JDBC, Unix commands
Hands-on Database experience in relational (Oracle/DB2) and No-SQL (MongoDB)
Hands-on experience on working/deploying application on Cloud
Hands-on experience in code testing tools like Junit/Mockito/Cucumber
Deployment Acquaintance in Apache Tomcat, Open shift or other cloud environments
Expertise in Test driven development (JUnit, JMeter), Continuous Integration (Jenkins), Build tool (Maven) and Version Control (Git), Development tools (Eclipse, IntelliJ)

Job Responsibility

Understanding user requirements and working with a development team on the design, implementation and delivery of Java/Python application
Providing expertise in the full software development lifecycle, from concept and design to testing
Working closely with teams to design and implement current and target state business process by using various tools and technologies

Fulltime

Full-Stack Developer

Join a highly experienced development team in the IDEAS department at Citi, resp...

Location

Poland , Warsaw

Salary:

Not provided

Citi

Expiration Date

Until further notice

Requirements

5+ years of experience in Core Java, Java EE, full-stack development, and proven experience in microservices architecture
strong proficiency with enterprise message bus systems (e.g., Solace, TIBCO or other JMS-based systems) and deep knowledge of RESTful web services
expertise in database design (Oracle 11+, writing complex SQL), ORM technologies, and J2EE application containers (e.g., Tomcat, WebSphere)
strong UI development skills, including JavaScript, Bootstrap, JQuery, HTML5, and CSS3/Ajax
familiarity with modern development environments (IDEs like Eclipse, IntelliJ), build tools (Maven, Ant), version control (Git), unit, integration, and system testing principles, and security best practices
excellent debugging and problem-solving skills, good verbal and written communication, and the ability to balance technical requirements with business needs in a global team
bachelor's degree in Computer Science, a related technical field, or equivalent work experience

Job Responsibility

design, develop, and maintain scalable web applications and microservices, focusing on usability, performance, and resilience
implement robust business logic and design efficient, scalable database models
develop and enhance user experience (UX) components
interact with an extended, global team of passionate, experienced software developers, architects, and business analysts
influence technologies and practices and contribute to design discussions and problem-solving sessions

What we offer

private medical care program
life insurance program
pension plan contribution (PPE Program)
employee assistance program
paid parental leave program (maternity and paternity leave)
sport card
holidays allowance
sport and team recreation activities
special offers and discounts for employees
access to an array of learning and development resources

Fulltime

Senior Full Stack Java Developer

As a Full Stack Development lead within our team, you will take on a critical l...

Location

Canada , Mississauga

Salary:

94300.00 - 141500.00 USD / Year

Citi

Expiration Date

Until further notice

Requirements

Strong proficiency in Java and deep, hands-on experience with the Spring ecosystem (Spring Boot, Spring MVC, Spring Data, reactive spring)
Proven experience building and consuming RESTful APIs and designing microservices with Spring Boot
Experience with relational databases (e.g., PostgreSQL, MySQL) and NoSQL databases (e.g., MongoDB)
Solid understanding of data access layers and ORM frameworks like Spring Data JPA/Hibernate
Experience with build tools like Maven or Gradle
Proficiency in modern front-end technologies (e.g., HTML5, CSS3, JavaScript/TypeScript)
Experience with working on ReactJS and Redux
Familiarity with front-end build tools (e.g., Webpack, npm, yarn)
Experience with version control systems (e.g., Git)
Understanding of software development best practices, including agile methodologies, continuous integration, and continuous delivery (CI/CD)

Job Responsibility

Design, develop, and implement new features and functionalities for web applications using Java and related frameworks
Develop and maintain robust back-end services, APIs, and databases, with a strong emphasis on the Spring Boot framework
Implement engaging and responsive user interfaces using modern front-end technologies
Collaborate with cross-functional teams to define, design, and ship new features
Write clean, maintainable, and efficient code following best practices and coding standards
Participate in code reviews to ensure code quality and share knowledge
Troubleshoot, debug, and upgrade existing systems
Contribute to all phases of the development lifecycle, including requirements gathering, design, coding, testing, and deployment
Optimize applications for maximum speed and scalability
Stay up-to-date with emerging technologies and industry trends

Fulltime

New

Full Stack Developer

We are seeking an experienced and highly motivated Full Stack Developer to join ...

Location

Canada , Mississauga

Salary:

94300.00 - 141500.00 USD / Year

Citi

Expiration Date

Until further notice

Requirements

4+ years of professional experience in software development, with at least 3 years in a full-stack role
Strong proficiency in Java development, including Spring Boot, Spring Framework, and related ecosystem
Expert-level skills in ReactJS and its core principles, along with experience in popular React workflows (such as Flux or Redux) and component libraries
Demonstrable experience with RDBMS (e.g., PostgreSQL, Oracle, MySQL), including advanced SQL, schema design, and performance tuning
Solid understanding and hands-on experience with NoSQL databases (e.g., MongoDB, Cassandra, DynamoDB), including data modeling and query optimization for these systems
Proven experience with CI/CD application delivery management, including tools like Jenkins, GitLab CI, GitHub Actions, Azure DevOps, or similar
Experience with cloud platforms (e.g., AWS, Azure, GCP) and containerization technologies (e.g., Docker, Kubernetes)
Excellent problem-solving, analytical, and communication skills
Ability to work effectively in an agile development environment
Bachelor’s degree/University degree or equivalent experience

Job Responsibility

Lead the design, development, and implementation of complex enterprise-level applications using Java for backend services and ReactJS for intuitive and responsive front-end user interfaces
Architect and manage data storage solutions, demonstrating proficiency with relational databases (e.g. Oracle, MySQL) and NoSQL databases (e.g., MongoDB, Cassandra, DynamoDB). This includes schema design, query optimization, and data migration strategies
Drive continuous improvement in our CI/CD pipelines, ensuring efficient, automated, and reliable application delivery from development to production environments
Mentor and provide technical guidance to junior and mid-level developers, fostering a culture of collaboration, excellence, and continuous learning
Collaborate with product managers, UX/UI designers, and other stakeholders to translate business requirements into technical specifications and deliver innovative solutions
Conduct code reviews, ensuring adherence to coding standards, performance, security, and scalability best practices
Troubleshoot and resolve complex technical issues across the full application stack
Stay abreast of emerging technologies, industry trends, and best practices in full-stack development, database management, CI/CD, and Artificial Intelligence

Fulltime

Senior Full Stack Engineer

GEICO is seeking an experienced Engineer with a passion for building high-perfor...

Location

United States , Seattle

Salary:

80000.00 - 215000.00 USD / Year

Geico

Expiration Date

Until further notice

Requirements

5+ years of professional software development experience in large-scale enterprise environments
3+ years of experience with ReactJS and its core principles (e.g., Redux, Hooks)
4+ years of experience with backend technologies, including .NET (C#) and Java
3+ years of experience with cloud platforms such as Azure, AWS, or GCP
Experience with RESTful services and APIs
Experience with open-source frameworks and tools
Hands-on experience in designing and architecting scalable systems
Strong proficiency in HTML5, CSS3, and JavaScript (ES6+)
Expertise in ReactJS and its ecosystem
Experience with backend frameworks such as Java, ASP.NET Core, Spring Boot, or similar

Job Responsibility

Design and Develop Systems: Architect, develop, and maintain scalable, resilient distributed systems
Define Product Requirements: Collaborate with stakeholders to define product requirements and deliver optimal solutions
Collaborate Across Teams: Work with cross-functional teams throughout the software development lifecycle to ensure seamless integration and delivery
Lead and Mentor: Conduct design sessions, code reviews, and mentor junior engineers to elevate engineering quality and share best practices
Develop Reusable Components: Create reusable application components and patterns to improve efficiency and scalability
Full-Stack Development: Design, develop, and maintain scalable full-stack applications, including front-end features using ReactJS and its ecosystem, backend services with .NET or Java frameworks, and efficient data management using SQL and NoSQL databases
API and Microservices: Develop and integrate RESTful APIs and microservices for seamless communication between systems
DevOps Practices: Utilize CI/CD pipelines, containerization (Docker), and orchestration (Kubernetes) to streamline development and deployment
Documentation: Publish and maintain documentation for design references, workflows, and runbooks
System Support: Provide support for critical systems, including 24x7 on-call support when necessary

What we offer

Comprehensive Total Rewards program that offers personalized coverage tailor-made for you and your family’s overall well-being
Financial benefits including market-competitive compensation
a 401K savings plan vested from day one that offers a 6% match
performance and recognition-based incentives
and tuition assistance
Access to additional benefits like mental healthcare as well as fertility and adoption assistance
Supports flexibility- We provide workplace flexibility as well as our GEICO Flex program, which offers the ability to work from anywhere in the US for up to four weeks per year

Fulltime

Full Stack Lead Developer

We are seeking an experienced and highly motivated Lead Full Stack Developer to ...

Location

United Kingdom , Belfast

Salary:

Not provided

Citi

Expiration Date

Until further notice

Requirements

Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field
Professional experience in software development, with at least 3 years in a lead or senior full-stack role
Strong proficiency in Java development, including Spring Boot, Spring Framework, and related ecosystem
Expert-level skills in ReactJS and its core principles, along with experience in popular React workflows (such as Flux or Redux) and component libraries
Demonstrable experience with RDBMS (e.g., PostgreSQL, Oracle, MySQL), including advanced SQL, schema design, and performance tuning
Solid understanding and hands-on experience with NoSQL databases (e.g., MongoDB, Cassandra, DynamoDB), including data modeling and query optimization for these systems
Proven experience with CI/CD application delivery management, including tools like Jenkins, GitLab CI, GitHub Actions, Azure DevOps, or similar
Experience with cloud platforms (e.g., AWS, Azure, GCP) and containerization technologies (e.g., Docker, Kubernetes)
Excellent problem-solving, analytical, and communication skills
Ability to work effectively in an agile development environment

Job Responsibility

Lead the design, development, and implementation of complex enterprise-level applications using Java for backend services and ReactJS for intuitive and responsive front-end user interfaces
Architect and manage data storage solutions, demonstrating proficiency with relational databases (e.g. Oracle, MySQL) and NoSQL databases (e.g., MongoDB, Cassandra, DynamoDB). This includes schema design, query optimization, and data migration strategies
Drive continuous improvement in our CI/CD pipelines, ensuring efficient, automated, and reliable application delivery from development to production environments
Mentor and provide technical guidance to junior and mid-level developers, fostering a culture of collaboration, excellence, and continuous learning
Collaborate with product managers, UX/UI designers, and other stakeholders to translate business requirements into technical specifications and deliver innovative solutions
Conduct code reviews, ensuring adherence to coding standards, performance, security, and scalability best practices
Troubleshoot and resolve complex technical issues across the full application stack
Stay abreast of emerging technologies, industry trends, and best practices in full-stack development, database management, CI/CD, and Artificial Intelligence

Fulltime

Senior Java Fullstack Developer

The Applications Development Senior Programmer Analyst is an intermediate level ...

Location

India , Chennai

Salary:

Not provided

Citi

Expiration Date

Until further notice

Requirements

Minimum of 8 years of progressive professional experience in full-stack software development
Proficiency in Java: Expert-level command of Java 8+ and the broader Java ecosystem
Extensive experience with enterprise frameworks like Spring Boot, Spring Cloud
Strong understanding of JVM performance tuning, memory management, and garbage collection
Proficiency with build automation tools such as Maven or Gradle
Fullstack Development & Architecture: Proven experience with modern frontend technologies including HTML5, CSS3, and advanced JavaScript/TypeScript
Expertise in designing, implementing, and optimizing complex database schemas for both relational and NoSQL databases
Demonstrated experience with ORM/ODM frameworks
Strong understanding of RESTful API design principles, GraphQL, and microservices architecture patterns
General Technical & Leadership Skills: Expertise in version control systems, especially Git

Job Responsibility

Lead the design, development, and maintenance of robust, scalable full-stack applications using Python and Java across various services and platforms
Drive technical projects from inception through deployment
Collaborate extensively with cross-functional teams, product owners, and architects to translate business requirements into technical solutions
Mentor and guide junior developers
Conduct thorough code reviews
Spearhead efforts in debugging, performance tuning, and optimizing complex systems
Actively contribute to the continuous improvement of development processes, tools, CI/CD pipelines, and overall system architecture
Architect and implement solutions involving various database systems, sophisticated APIs, and complex third-party integrations
Oversee the deployment, monitoring, and operational support of applications in production environments

Fulltime

New

Senior Java Full Stack Developer

Senior Full Stack Developer - AVP is a senior level Full Stack developer in Java...

Location

India , Pune

Salary:

Not provided

Citi

Expiration Date

Until further notice

Requirements

8+ years of Full stack developer with strong hands on experience in Java and Java Script related frameworks with exposure to DB
Architecture decision ownership
Hands-on code reviews and design reviews
Proven experience of below technologies: Backend: Java, Spring Boot, Microservices, REST API design
Frontend: Angular, Web Performance Optimization, Testing (Jest, Playwright)
Database & Storage: Oracle, NOSQL
Security & Performance: OAuth2, JWT, encryption, and system optimization
DevOps: CI/CD, Jenkins, GitHub Actions, Docker, Kubernetes
Cloud: AWS (ECS, Lambda, RDS, IAM, CloudFormation)
Proven hands on full-stack expertise in Java, Angular, REST APIs and relational/non-relational databases

Job Responsibility

Partner with multiple Business and Application teams to ensure appropriate integration of functions to meet goals as well as identify and define necessary system enhancements to deploy new products and process improvements
Resolve variety of high impact problems/projects through in-depth evaluation of complex business processes, system processes, and industry standards
Provide expertise in area and advanced knowledge of applications programming and ensure application design adheres to the overall architecture blueprint
Utilize advanced knowledge of system flow and develop standards for coding, testing, debugging, and implementation
Develop comprehensive knowledge of how areas of business, such as architecture and infrastructure, integrate to accomplish business goals
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
Appropriately assess risk when business decisions are made, demonstrating 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

Fulltime

Full-Stack Developer (Java) - Enterprise Applications

Citi

Location:
Poland , Warsaw

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
January 29, 2026

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Job Posted:January 29, 2026

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January 29, 2026