Back End Developer Jobs in Delaware

INTRODUCTION

The Sr Java Applications Development is a senior level position responsible for establishing and implementing new or revised application systems and programs as individual contributor. The overall objective of this role is to build and code frameworks and services that are reusable for complex requirements.

Responsibilities:

- Partner with multiple management 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 particular 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.

REQUIRED QUALIFICATIONS:

- Proficiency in programming in Java, API, Cloud engineering
- Hands on experience of building RESTful APIs using popular frameworks like Spring
- Experience in Oracle, SQL, NoSql - MongoDB
- Experience in Cloud - Openshift Kubernetes, Messaging systems - MQ, Kafka
- Experience of following clean code principles
- Solid understanding of software development lifecycle (SDLC) and Agile methodologies.
- Knowledge of DevOps practices and CI/CD pipelines.
- Able to independently work in fast paced and rapidly changing environment
- Experience in systems analysis and programming of software applications
- Ability to work under pressure and manage deadlines or unexpected changes in expectations or requirements

RECOMMENDED QUALIFICATIONS:

- Experience in Financial domain with focus on Payments is a plus
- Understanding of GenAI, LLMs is a plus
- Experience in integrating mainframe applications with Kafka or API is a plus
- 6+ years of relevant experience in Apps Development or systems analysis role
- Extensive experience system analysis and in programming of software applications
- Experience in managing and implementing successful projects
- Subject Matter Expert (SME) in at least one area of Applications Development
- Ability to adjust priorities quickly as circumstances dictate
- Demonstrated leadership and project management skills
- Consistently demonstrates clear and concise written and verbal communication

Education:

- Bachelor’s degree/University degree or equivalent experience
- Master’s degree preferred

JOB FAMILY GROUP: Technology

JOB FAMILY: Applications Development

TIME TYPE: Full time

PRIMARY LOCATION: New Castle Delaware United States

PRIMARY LOCATION FULL TIME SALARY RANGE: $125,760.00 - $188,640.00

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.

MOST RELEVANT SKILLS

Please see the requirements listed above.

OTHER RELEVANT SKILLS

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

ANTICIPATED POSTING CLOSE DATE: Jun 09, 2026

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.