Senior Full-Stack Engineer: Test Data Tools & Automation

Citigroup Inc.

Jacksonville (FL)

On-site

USD 113,840 - 170,760

Full time

14 days+

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Job summary

Citigroup Inc. is seeking a Senior Application Developer to design, build, and support modern web applications for our test data management platform.

You will work across the stack, implementing RESTful APIs with Java/Spring Boot and modern front-end work in React and TypeScript. You will help automate provisioning of test data, modernize internal tools, and collaborate closely with scrum teams to deliver secure, scalable microservices and robust CI/CD pipelines.

Qualifications

  • 5+ years of full-stack web development experience.
  • Expertise in Java and Spring Boot, REST APIs.
  • Proficient in React, TypeScript, HTML5, CSS.
  • Experience with SQL Server and CI/CD pipelines.

Responsibilities

  • Full-Stack Development: design, build, and support modern web applications across the stack (UI, APIs, backend).
  • Backend & API Services: develop scalable microservices with Java/Spring Boot; design and document RESTful APIs.
  • Automation & Modernization: contribute to automated provisioning of test data and modernization of internal tools.
  • Collaboration: work with teams to provide customized test data solutions as needed.
  • Engineering Excellence: use GitHub, contribute to CI/CD, write unit/integration tests, participate in code reviews.
  • Support & Operations: ensure reliability and availability of test data for scrum teams.

Skills

Full-stack development
Java & Spring Boot
React & TypeScript
API design & microservices
SQL Server modeling
GitHub CI/CD
Agile teamwork
Strong communication

Education

Bachelor's degree in CS or related field

Job description

Join our high-impact Test Data Management team, a group dedicated to building and maintaining the essential tools that empower dozens of scrum teams to test their customer-impacting changes safely and efficiently. Our core mission is to automate and streamline the complex process of managing test data at a massive scale. As a Senior Application Developer, you will be a full stack engineer responsible for designing, building, and supporting the modern web applications that form our self-service toolset. This role requires expertise across the stack, from front-end development in React to back-end services in Java/Spring Boot. You will be instrumental in our ongoing effort to consolidate and modernize our applications, creating a more efficient workflow for the entire organization within an API-first, microservices-based architecture. If you are passionate about automation, building thoughtful interfaces, and creating solutions that make developers' lives easier, this is the team for you.

Key Responsibilities

  • Full-Stack Development:Design, build, and support modern, user-friendly web applications across the stack (UI, APIs, and backend services) to provide self-service test data capabilities.
  • Backend & API Services:Develop scalable, secure microservices using Java and Spring Boot. Design, build, and document RESTful APIs, ensuring adherence to service contracts and versioning strategies.
  • Automation & Modernization:Design and implement automated processes for provisioning and managing test data accounts. Actively contribute to the consolidation and modernization of our internal toolset to improve efficiency and user experience.
  • Collaboration & Custom Solutions:Work closely with development teams to understand their needs and provide customized test data solutions where required.
  • Engineering Excellence:Utilize GitHub and contribute to automated CI/CD pipelines for building, testing, and deploying applications. Promote engineering best practices by writing robust unit and integration tests and participating in code reviews.
  • Support & Operations:Perform standard test data management functions to ensure the reliability and availability of test data for all scrum teams.

Required Skills & Qualifications

  • 5+ years of experience in full-stack web application development.
  • Strong backend development experience withJavaandSpring Boot(REST APIs, security concepts, performance, and scalability).
  • Strong front-end development experience withReact, including TypeScript, HTML5, and CSS.
  • Solid understanding ofAPI designandmicroservicesarchitecture (service boundaries, resilience, observability basics).
  • Hands-on experience withSQL Serverand relational data modeling.
  • Proficiency withGitHubworkflows and practical experience withCI/CDpipelines.
  • Excellent communication skills, a strong sense of ownership, and the ability to work collaboratively in an agile team.

Preferred Skills

  • Experience with cloud platforms (AWS, Azure, or GCP).
  • Experience with Node.js.
  • Containerization and orchestration experience (Docker, Kubernetes/OpenShift).
  • Experience with a variety of automated testing frameworks (unit, integration, and UI testing).
  • Exposure to observability practices (logging, metrics, tracing) and production support.

Education

Bachelor’s degree in Computer Science, Software Engineering, a related technical field, or equivalent practical experience

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Job Family Group:
Technology

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Job Family:
Applications Development

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Time Type:
Full time

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Primary Location:
14000 CITI CARDS WAY BUILDING C JACKSONVILLE

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Primary Location Full Time Salary Range:
$113,840.00 - $170,760.00


In addition to salary, Citi’s offerings may also include, for eligible employees, discretionary and formulaic incentive and retention awards. Citi offers competitive employee benefits, including: medical, dental & vision coverage; 401(k); life, accident, and disability insurance; and wellness programs. Citi also offers paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and paid holidays. For additional information regarding Citi employee benefits, please visit citibenefits.com. Available offerings may vary by jurisdiction, job level, and date of hire.

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Most Relevant Skills
Please see the requirements listed above.

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Other Relevant Skills
For complementary skills, please see above and/or contact the recruiter.

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Anticipated Posting Close Date:
Jul 15, 2026

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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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