Sev1Tech is seeking a Senior Software Engineer for the Naval Supply Systems Command (NAVSUP) Ordnance Information System (OIS) program based in Mechanicsburg, PA, and Yorktown, VA, as they modernize their legacy IT systems. This role will bring strong systems, software, cloud, and SAFE/Agile experience to provide technical expertise on a mission-critical program whose purpose is to develop and modernize OIS mission critical systems.

In this hands-on position, you will work collaboratively to architect, design, build, deliver, and enhance highly available, scalable, real-time systems. You will exercise your judgment in determining and recommending the best designs based on customer business objectives, timelines, and other resource constraints. You will participate in all aspects of the software development lifecycle of a mission critical product including scope and work estimation, architecture and design, coding and unit testing. The right candidate will be working with our program’s developers, engineers, operations, and integration teams to support a complex program to provide Agile development and operations and maintenance on a mission-critical program.

This position is remote but visits to customer site will be required. Currently, customer site visits for Program Increment Planning occur every 10 weeks.

Primary Responsibilities: As Senior Software Engineer, you will:

• Participate in all aspects of the software development lifecycle of a mission critical product including scope and work estimation, architecture and design, coding and unit testing, and debugging and maintenance. 
• Translate customer needs into user stories and deliver working capabilities at the conclusion of each sprint.
• Ensure software developed passes and completes stages within the CI pipeline.
• Write automated test such as unit, integration, functional, 508, performance, and end-to-end
• Develop in environments that utilize CI/CD tools for build, test, secure and deploy
• Develop in a Docker and Docker Compose environment
• Interface with software developers, analysts, and other project team members using Agile SCRUM methodology and SAFe to deliver features that enhance system capabilities and facilitate NAVSUP OIS’s mission.
• Mentor other software developers on the team to enhance their skills.
• Participate and/or lead sprint demonstrations and facilitate implementation of agreed upon ideas identified at retrospectives.
• Work with others on product teams to develop solutions to hard problems that are impeding progress.
• Effectively communicate technical challenges, options considered, and the recommended solution to team leads. 

• Must have DOD Secret level clearance to start
• Certification Requirement: Directive 8570.1/8140 - Security+ certification required
• Bachelor’s degree with a minimum of 7 years of relevant experience.
• Must be a self-starter with the ability to work independently with minimal supervision.
• Experience developing in a microservices architecture
• Experience developing in a containerized environment
• Experience writing automated tests such as unit, integration, functional, 508, performance, and end-to-end.
• Experience developing in environments that utilize CI/CD tools for build, test, secure and deploy
• Experience with IT networks and technologies; preferably Spring Boot, Linux, Java, Java Servlet, JUnit, JavaScript, HTML, CSS, TypeScript, Axios, Maven, Vue.JS, Ionic, React
• Experience with an agile lifecycle management tool (e.g., Jira, Azure DevOps, Gitlab Ultimate)
• Proficiency with common SAFE and Agile practices, service-oriented environments, and better development practices
• Experience with API Design and Management
• Experience developing Web Services (SOAP, REST)
• Excellent written and verbal communication skills

• Bachelor’s degree with a minimum of 12 years of relevant experience preferred
• Experience as a software developer supporting logistics IT systems
• Familiarity with and prior use of test automation, e.g., Selenium, Citrus
• Knowledge of AWS Relational Database Services
• Experience with DevSecOps frameworks
• Experience with Helm Charts
• Experience as a developer within the AWS environment is a plus
• Direct experience in providing customer support.
• Experience with Message-Oriented Middleware (MOM)
• Experience with Performance Optimization and Scalability
• Experience with policies and procedures to escalate customer issues.
• Experience with analytical and documentation requirements.

Founded in 2010 and recently acquired by ERT in early 2026, Sev1Tech, an ERT Company provides IT, engineering, and program management solutions delivery to critical missions across Federal and Commercial Clients. With its acquisition by ERT, Sev1Tech expanded its ability to offer secure, mission-aligned digital solutions to support modernization, resilience and operational effectiveness for government customers operating in highly regulated mission environments. ERT and Sev1Tech together become a fully diversified engineering and federal technology solutions firm with broad reach into space, civilian, and defense markets.

Please apply directly at: https://careers-sev1tech.icims.com. For questions or to submit a referral, please contact: recruiting@sev1tech.com

Sev1Tech is an Equal Opportunity and Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status.