Senior Java Application Developer

Quantum Technologies. LLC; Plano (TX); On-site; USD 100,000 - 170,000; Full time

Job summary

Quantum Technologies. LLC is seeking an experienced Java developer to design and maintain Java web services and applications serving internal and public users. Candidates will implement secure authentication, RESTful APIs, and scalable data access with PostgreSQL.

The role emphasizes collaboration with engineers and domain experts, adherence to WCAG accessibility standards, and participation in AWS-based CI/CD pipelines. Strong communication and self-management are required.

Qualifications

• 15+ years of Java Core, Java EE, JPA and JPQL experience.
• 5 years with JSF/PrimeFaces.
• 10 years with PostgreSQL/PLpgSQL.
• 5 years in Cloud/AWS and RESTful services.
• Knowledge of WCAG compatibility.
• Strong verbal and written communication skills.

Responsibilities

• Develop Java applications and web services for public and internal users.
• Update existing Java web apps with new enhancements per requirements.
• Build web apps using Java frameworks, preferring EJB and JSF.
• Develop APIs and web apps using PostgreSQL for data storage and queries.
• Implement authentication using OAuth2 or OpenAM.
• Advance CI/CD pipelines in AWS environments.
• Ensure agency data security standards and encryption are used.
• Analyze requirements and translate into system features and functionality.
• Collaborate with developers and SMEs to meet project needs.
• Support continuous improvement by evaluating new technologies.

Skills

Java Core/JEE

JSF/PrimeFaces

PostgreSQL/PLpgSQL

AWS/Cloud

RESTful Web Services

WCAG Knowledge

Communication

EMSA/DPHIP experience

Maven/GitHub/Agile

JUnit/Arquillian

Selenium/JMeter

JIRA/CI/CD

DB Schema Design

Tools

Maven

GitHub

JIRA

CI/CD

Selenium

JUnit

Arquillian

JMeter

Job description

US Citizen, Green Card, H-1B, OPT-EAD, CPT, Other

• 15 years of experience with Java Core, Java EE (JEE), the Java Persistence API (JPA), and the Java Persistence Query Language (JPQL).


• 5 years of experience with Java Server Faces (JSF) / PrimeFaces.


• 10 years of experience with PostgreSQL SQL and PL/pgSQL.


• 5 years of experience understanding development processes in Cloud / Amazon Web Services.


• 5 years of experience with Java RESTful web services.


• Knowledge and application of WCAG (Web Content Accessibility Guidelines) compatibility.


• Excellent verbal and written communication skills, with the ability to work independently and manage time effectively.

Other Qualifications:

• Experience with EMSA and ability to fit with the DPHIP team (evaluated under the scoring criteria above).


• Experience with Maven, GitHub, and Agile development.


• Experience with JUnit, Arquillian, or a similar testing framework.


• Java automated testing with Selenium, and application load testing with Apache JMeter or similar.


• Experience with JIRA and continuous integration/continuous deployment (CI/CD).


• Experience with database schema design.

Key Responsibilities:

• Develop Java applications and web services, including new applications and replacements for legacy applications that serve both public and internal users.


• Update existing Java web applications to maintain current functionality and provide new enhancements per user requirements.


• Build web applications using Java web frameworks, with preference given to EJB and JSF.


• Develop web applications and APIs that use PostgreSQL to store and query data.


• Implement authentication for external users and systems using standards such as OAuth2 or OpenAM.


• Work toward continuous integration/continuous delivery (CI/CD) pipelines in Amazon Web Services.


• Ensure agency data security standards are met and approved data encryption techniques are used.


• Analyze user requirements to define business objectives, implement them in an application, and envision system features and functionality.


• Collaborate with application developers, engineers, and subject matter experts to deliver project requirements.


• Support continuous improvement by investigating alternatives and technologies and presenting them for architectural review.

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.