Senior Java Developer

Salary: $156,000 - 156,000 per year

Requirements:

• U.S. Citizenship or Legal Permanent Residency (Green Card holder for at least three years)
• Federal Tax compliance is essential
• Ability to obtain and maintain a Minimum Background Investigation (MBI) clearance
• Active Moderate Risk MBI clearance is advantageous
• Bachelors degree from an accredited institution (four additional years of related experience may substitute for the degree)
• Minimum of five years of relevant experience
• Proficient in Core Java 8+ development
• Skillful in designing and implementing JEE solutions using Spring Boot and Microservices
• At least four years of experience with IBM ALC programming language
• Proven experience in developing and maintaining COBOL applications in enterprise mainframe settings
• Familiarity with batch systems using JCL and IBM utilities
• Experience in modernizing or integrating legacy mainframe platforms with distributed Java systems
• Knowledge of Agile and continuous integration methodologies
• Proficient in Lambda expressions and Generics
• Understanding design patterns, SOA principles, and Java APIs
• Working knowledge of REST/SOAP services, messaging frameworks, and event platforms
• Strong communication skills, both verbal and written
• Demonstrated capacity to deliver intricate solutions as a senior contributor
• Experience with integrating GOTS and COTS products
• Background in performance tuning and optimization of service-based frameworks

Responsibilities:

• Maintain and enhance existing software applications, including design, development, unit testing, and debugging with Java 8+, SQL, Spring Boot, and Microservices
• Create design specifications that cater to evolving requirements
• Develop and deploy Java components or full applications within JEE environments
• Design, develop, test, and document software components based on business requirements
• Devise unit test cases, plans, and automated tests adhering to Test-Driven Development (TDD) practices
• Conduct unit, integration, and regression testing
• Engage in design and code reviews to ensure quality
• Update and maintain source code and software components
• Document processes in accordance with development methodologies
• Create custom adapters for integration of legacy systems with service-oriented frameworks
• Collaborate within a large Agile team operating in short sprint cycles
• Effectively interact with engineers, program leaders, and clients
• Provide development, testing, and production support for IBM mainframe applications in ALC and COBOL
• Maintain and enhance legacy ALC/COBOL batch programs, including debugging and performance tuning
• Support integration of Java microservices with mainframe systems operating in z/OS environments
• Participate in production incident resolutions and Service Restoration Team calls as necessary
• Execute and troubleshoot batch tasks using JCL and IBM utilities
• Support applications in enterprise IRS environments utilizing configuration management tools like Rational Team Concert and Endevor

Technologies:

• Lambda
• COBOL
• IBM
• IBM Mainframe
• Support
• Java
• REST
• SOAP
• SQL
• Spring
• Spring Boot
• TDD
• microservices
• Java EE
• API
• AWS
• Cloud
• Docker
• IBM Db2
• JBoss
• JPA
• Jenkins
• Kafka
• Linux
• Maven
• MongoDB
• Tomcat
• Websphere
• XML

More:

We are excited to announce an opening for a Senior Java / Mainframe Application Developer to support our client with enterprise-scale software systems. This role allows for 100% remote work, and you will be part of a dynamic and collaborative Agile team focused on modernization initiatives. We offer a comprehensive benefits package including health, dental, vision insurance, life insurance, a 401(k) plan, and paid time off. Join us in supporting mission-critical processing systems for the IRS and be an integral part of our innovative team.

last updated 15 week of 2026