Top 75 Java developer Jobs in Middletown, De

Senior Full Stack Developer - Vice President
Information Technology Senior Management Forum —New Castle, DE
- $125,760 - $188,640 a year
- Full-time
- 6 years
- System design
- Office
- Paid holidays
- Disability insurance
Senior DevOps Engineer - AWS/Java/Linux/Ansible/Git/Python
Captivation Software —Aberdeen Proving Ground, MD
- $130,000 - $270,000 a year
- Java
- Master's degree
- High school diploma or GED
- Health savings account
- AD&D insurance
Quick Apply
MEAN Stack Development Manager
Bridgesoft —Wilmington, DE
- Computer Science
- Java
- SQL
Senior Software Developer (Secret Clearance Required)
NextGen Federal Systems —Aberdeen, MD
- Full-time
- Hybrid work
- Computer science
- Computer Science
- 3 years
Quick Apply
Lead C2 Software Engineer
The MITRE Corporation —Aberdeen, MD
- Full-time
- Hybrid work
- Customer service
- Windows
- 3 years
Principal Software, Data, and AI Engineer
The MITRE Corporation —Aberdeen, MD
- Full-time
- Hybrid work
- 5 years
- System design
- Windows
Lead Java Platform Engineer (Payments Publish) - Senior Vice President
Information Technology Senior Management Forum —New Castle, DE
- $156,160 - $234,240 a year
- Full-time
- System design
- Office
- Master's degree
- Paid holidays
- Disability insurance
Radio Services Software Engineer
Sigmatech, Inc. —Aberdeen Proving Ground, MD
- $150,000 - $175,000 a year
- Full-time
- Computer science
- Computer Science
- Laboratory experience
Quick Apply
Lead Electrical Warfare Software/Systems Engineer (SIGINT/ELINT)
MAG Aerospace —Aberdeen Proving Ground, MD
- $185,000 - $260,000 a year
- Full-time
- Azure
- Computer Science
- Java
- Health insurance
- Tuition reimbursement
Lead Software Engineer - Databricks
JPMorganChase —Wilmington, DE
- Full-time
- 5 years
- Java
- SQL
- Health insurance
- Tuition reimbursement
Software Engineer II - Remote
CSAA Insurance Services, Inc. —Middletown, DE
- $41.07 - $54.76 an hour
- Full-time
- Remote
- Computer science
- Computer Science
- Mid-level
- 401(k) matching
5d
IS Principal Developer Analyst – SAP ABAP
ABB Inc. —Newark, DE
- $98,700 - $157,920 a year
- Full-time
- Bachelor of Science
- Analysis skills
- Bachelor's degree
- Health savings account
- AD&D insurance
Quick Apply
5d
Software Engineer - Level III
Augustine Consulting Inc. —Aberdeen, MD
- $108,000 - $162,000 a year
- Full-time
- 5 years
- Windows
- Java
- Paid parental leave
- Health insurance
Senior Software Engineer
TaxPlanIQ —United States
- $100,000 - $140,000 a year
- Email
- Remote
- Background check
- System design
- Java
- Health insurance
- Dental insurance
Quick Apply

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Senior DevOps Engineer - AWS/Java/Linux/Ansible/Git/Python
Captivation Software —Aberdeen Proving Ground, MD
9+ years of experience in DevOps Engineering or Software Development and Bachelors in related field; or 7 years relevant experience with Masters in related…
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Senior Full Stack Developer - Vice President

Information Technology Senior Management Forum
New Castle, DE

Apply Now

Job Details

Full-time
$125,760 - $188,640 a year

Benefits

Paid holidays
Disability insurance
Health insurance
Dental insurance
401(k)
Paid time off
Vision insurance

Qualifications

Spring Boot
Systems integration
CSS
Continuous Delivery (CD) implementation
Front-end state management
MongoDB
SQL
Version control systems
ECMAScript
Red Hat OpenShift
Agile software development
Back-end integration
DevOps automation
Design (software development lifecycle)
Stakeholder relationship building
Cloud services
HTML
Stakeholder management

Full Job Description

Posted Date 6/04/2026

Description

The Full Stack Developer is a senior-level position responsible for designing, developing, and implementing both frontend and backend application systems and services. This role requires hands-on expertise across the full technology stack, with a strong emphasis on building scalable APIs and modern, responsive user interfaces using React. The overall objective is to deliver high-quality, reusable frameworks and solutions that support complex business requirements.

Responsibilities

Partner with multiple management and cross-functional teams to ensure seamless integration of business and technology solutions, while identifying and defining necessary system enhancements.
Design, develop, and maintain scalable backend services using Java and Spring frameworks, along with modern frontend applications using React.js.
Build intuitive, responsive, and high-performance user interfaces that enhance user experience.
Develop and maintain RESTful APIs and microservices architecture.
Resolve high-impact problems through in-depth evaluation of complex business and system processes.
Ensure application design aligns with enterprise architecture standards and best practices.
Establish and enforce coding, testing, debugging, and deployment standards across the full stack.
Collaborate closely with UI/UX designers, product owners, and backend teams to deliver cohesive solutions.
Contribute to the development of CI/CD pipelines and support DevOps best practices.
Provide technical leadership, mentorship, and guidance to mid-level developers and analysts.
Assess risk appropriately in all technical decisions, ensuring compliance with regulatory requirements, company policies, and ethical standards.

Required Qualifications

Strong proficiency in Java (Spring Boot) and backend service development.
Hands-on experience with React.js, modern JavaScript (ES6+), HTML5, and CSS3.
Experience building and consuming RESTful APIs and integrating frontend applications with backend services.
Working knowledge of state management libraries (e.g., Redux, Context API).
Experience with databases: Oracle, SQL, and NoSQL (MongoDB).
Familiarity with cloud platforms (OpenShift, Kubernetes) and containerization.
Experience with messaging systems such as Kafka and MQ.
Strong understanding of software development lifecycle (SDLC) and Agile methodologies.
Knowledge of DevOps practices, CI/CD pipelines, and version control systems (e.g., Git).
Solid understanding of clean code principles and application design patterns.
Ability to work independently in a fast-paced and dynamic environment.
Strong analytical, problem-solving, and communication skills.

Preferred Qualifications

Experience in the financial services domain, particularly Payments.
Familiarity with GenAI and Large Language Models (LLMs).
Experience integrating mainframe systems with APIs or Kafka.
Experience with modern frontend tooling (e.g., Webpack, Vite, Jest, Cypress).
6+ years of relevant experience in full stack development or systems analysis.
Proven track record of delivering complex, high-impact projects.
Subject Matter Expert (SME) in one or more areas of application development.
Strong leadership, stakeholder management, and project delivery skills.

Education

Bachelor’s degree or equivalent experience required
Master’s degree preferred

This job description provides a high-level overview of responsibilities. Additional duties may be assigned as needed.

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.

Salary125,760.00 - 188,640.00 Annual

Type

Full-time

Apply Now

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Responsibilities

Partner with multiple management and cross-functional teams to ensure seamless integration of business and technology solutions, while identifying and defining necessary system enhancements.

Design, develop, and maintain scalable backend services using Java and Spring frameworks, along with modern frontend applications using React.js.

Build intuitive, responsive, and high-performance user interfaces that enhance user experience.

Develop and maintain RESTful APIs and microservices architecture.

Resolve high-impact problems through in-depth evaluation of complex business and system processes.

Ensure application design aligns with enterprise architecture standards and best practices.

Establish and enforce coding, testing, debugging, and deployment standards across the full stack.

Collaborate closely with UI/UX designers, product owners, and backend teams to deliver cohesive solutions.

Contribute to the development of CI/CD pipelines and support DevOps best practices.

Provide technical leadership, mentorship, and guidance to mid-level developers and analysts.

Assess risk appropriately in all technical decisions, ensuring compliance with regulatory requirements, company policies, and ethical standards.

Required Qualifications

Strong proficiency in Java (Spring Boot) and backend service development.

Hands-on experience with React.js, modern JavaScript (ES6+), HTML5, and CSS3.

Experience building and consuming RESTful APIs and integrating frontend applications with backend services.

Working knowledge of state management libraries (e.g., Redux, Context API).

Experience with databases: Oracle, SQL, and NoSQL (MongoDB).

Familiarity with cloud platforms (OpenShift, Kubernetes) and containerization.

Experience with messaging systems such as Kafka and MQ.

Strong understanding of software development lifecycle (SDLC) and Agile methodologies.

Knowledge of DevOps practices, CI/CD pipelines, and version control systems (e.g., Git).

Solid understanding of clean code principles and application design patterns.

Ability to work independently in a fast-paced and dynamic environment.

Strong analytical, problem-solving, and communication skills.

Preferred Qualifications

Experience in the financial services domain, particularly Payments.

Familiarity with GenAI and Large Language Models (LLMs).

Experience integrating mainframe systems with APIs or Kafka.

Experience with modern frontend tooling (e.g., Webpack, Vite, Jest, Cypress).

6+ years of relevant experience in full stack development or systems analysis.

Proven track record of delivering complex, high-impact projects.

Subject Matter Expert (SME) in one or more areas of application development.

Strong leadership, stakeholder management, and project delivery skills.