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

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

Software Engineer

Location

Canada , Richmond

Salary:

40.00 - 55.00 CAD / Hour

Applied Biological Materials Inc

Expiration Date

Until further notice

Requirements

A bachelor's degree in computer science, software engineering, information systems, or a related field, or equivalent experience
Strong knowledge of Java and C++
At least 2 years of relevant experience is required
Well versed in designing, debugging and documentation
Excellent verbal and written communication skills
Analytical and logical thinking
Strong problem-solving skills
Ability to work without supervision

Job Responsibility

Build, design, develop and maintain complex, scalable applications and deliver robust computer-based system solutions, including mobile applications
Collaborate within development team to design, develop, test, implement, and support technical solutions in full-stack development tools and technologies
Research, design, develop, and modify enterprise-wide systems and application software
Design, develop and maintain data platform components that power the Telemetry systems, and help stand up scalable & reliable services with great monitoring & telemetry support
Manipulate and analyze complex, high-volume data systems for scalability and compliance
Analyze, design and develop tests, and design and develop a processing platform using various configuration management technologies
Test software development methodology in an agile environment
analyze and provide ongoing maintenance, support and enhancements in existing systems and platforms, also provide recommendations for continuous improvement
Create technical specifications and apply software engineering principles to analyze, problem-solve, and design a solution
Monitor system performance and perform predictive maintenance, also perform system risk and reliability analysis

Fulltime

Senior Full Stack Engineer

The Senior Full Stack Engineer will support the modernization of IRS mission-cri...

Location

United States , McLean

Salary:

Not provided

BLN24

Expiration Date

Until further notice

Requirements

Bachelor’s degree in Computer Science, Engineering, or related field
Minimum 6 years of experience in full-stack software development and architecture
Demonstrated expertise in designing and implementing RESTful and GraphQL APIs, and building service-oriented architectures
Proficiency with front-end frameworks such as React, Angular, or Vue, and backend technologies such as Node.js, Python, Java, or Spark
Solid working knowledge of core web technologies, including HTML, CSS, JavaScript, and modern UI component libraries
Hands-on experience with cloud platforms (AWS, GCP, Azure) and container orchestration tools including Kubernetes and OpenShift
Familiarity with platforms such as Databricks for data engineering, pipeline integration, or ML model support
Experience designing scalable, secure web applications and microservices architectures with considerations for caching, authentication, and maintainability
Working knowledge of SQL and NoSQL databases, CI/CD pipelines, infrastructure-as-code, and cloud monitoring tools
Experience collaborating in Agile delivery environments, and contributing to code reviews, documentation, and team-based development workflows

Job Responsibility

Design and develop scalable APIs using REST, GraphQL, and gRPC in compliance with IRS enterprise architecture and security standards (OAuth, JWT)
Lead full-stack development of modern, modular web applications that interface with IRS systems and external users
Decompose and migrate legacy system functionality (e.g., COBOL-based command codes) into modern service-oriented components
Integrate AI-driven services, including ML model endpoints, auto-generated documentation, code conversion workflows, and intelligent test automation
Implement CI/CD pipelines and automated testing tools (e.g., Postman, Newman) to ensure secure, validated, and maintainable code
Collaborate with DevOps and Site Reliability Engineers to embed observability tools (e.g., Prometheus, Datadog, New Relic) and monitoring dashboards
Translate business and functional requirements into API contracts and reusable service patterns, working within Agile Scrum teams
Maintain backward compatibility with legacy systems while building toward scalable, cloud-optimized services
Ensure IRS and Treasury IT governance compliance, including Section 508 accessibility and cybersecurity policies

What we offer

Generous medical, dental, and vision plans
Opportunity to work in different sectors
Flexibility to balance quality work and personal lives
Remote working opportunities

Fulltime

Sr. Java Full Stack Developer

We are currently seeking a Sr. Java Full Stack Developer (Spring, Angular, Types...

Location

United States , Durham

Salary:

Not provided

NTT DATA

Expiration Date

Until further notice

Requirements

8+ years of software development experience using in Java, Spring/Springboot, middle tier restful services
5+ years Angular (must be Typescript)
5+ years’ experience with API/web services - with a strong understanding of RESTful web services
5+ years’ experience designing and integrating Apache Kafka
Experience design, developing and testing data integration workflows with Informatica ETL/ELT
Experience with Oracle database
Strong experience with Automation Tools/Frameworks
Strong understanding of CI/CD tools such as GitHub, Jenkins, Artifactory, uDeploy
deploying applications in a DevOps environment
Experience working with cloud services (e.g. Docker, Kubernetes, Terraform, and AWS cloud deployment/application management)

Job Responsibility

Join a high-impact engineering team, driving our client’s enterprise platform journey—designing and integrating innovative solutions that shape the future of their technology landscape
Leverage your full-stack development expertise to build robust, enterprise-grade applications leveraging Java (Spring/Spring Boot), Angular and Cloud services
Collaborate within a dynamic, agile team environment while also taking ownership of individual deliverables to ensure the delivery of high-quality, scalable, and maintainable solutions

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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