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Job Title:

Senior Software Engineer Location:

Onsite Washington, D.C. Clearance:

Top Secret SCI w/ Poly Employment Type:

Full-Time / W2 / Contract

Position Summary: Experis is seeking a highly experienced

Senior Software Engineer

to support a federal agency's mission-critical applications. The ideal candidate will have at least

8 years of hands-on software development experience

, with advanced proficiency in

Java/J2EE, Oracle, PostgreSQL, Spring Framework, JavaScript/React, and AWS

. This role requires strong database development expertise, UI development experience, and the ability to deliver enterprise-grade solutions in an Agile federal environment.

Key Responsibilities:

Develop, deploy, and maintain secure, scalable applications using Java 8 (J2EE), Spring Boot, React, and RESTful APIs. Lead the design and development of enterprise applications using

Oracle and PostgreSQL , with advanced SQL and PL/SQL scripting. Implement web-based user interfaces with JavaScript, AJAX, and React while ensuring Section 508 compliance. Support full application lifecycle, including requirements gathering, analysis, design, development, testing, and production support. Collaborate within Agile Scrum and Kanban teams using tools like Jira and Confluence. Participate in CI/CD workflows, DevSecOps pipelines, and deployment automation using tools such as Git, Maven, and Jenkins. Operate and troubleshoot applications hosted in

AWS Cloud , leveraging services like EC2, RDS, S3, EBS, and AMIs. Support and maintain enterprise applications in a 24/7 mission-critical environment.

Required Qualifications: •

U.S. Citizenship

is required. • Ability to obtain and maintain a [Public Trust / Secret / Top Secret] security clearance. • Bachelor's degree in Computer Science, Engineering, or related field. •

8+ years

of hands-on development experience in:

Java 8 (J2EE) ,

Spring Framework 5+ ,

Spring Boot 2 JavaScript/AJAX ,

React , HTML, CSS Hibernate 5+ ,

RESTful Web Services SQL/RDBMS , specifically

Oracle

and

PostgreSQL Apache Tomcat ,

Red Hat JBoss ,

Linux (RHEL/CentOS) Eclipse IDE ,

Maven ,

Git •

8+ years

in database development and enterprise troubleshooting with a focus on performance tuning and scalability. •

5+ years

of experience with:

Amazon Web Services (AWS)

- including EC2, RDS, S3, EBS, AMIs, IaaS Agile frameworks

- Scrum and Kanban Atlassian tools

- Jira and Confluence CI/CD tools and automation frameworks

Preferred Qualifications:

Experience with Section 508 accessibility standards. Knowledge of FedRAMP, FISMA, and other federal compliance standards. Familiarity with containerized environments and orchestration tools (e.g., Docker, Kubernetes). Oracle, Java, or AWS certifications preferred.