Software Engineer (SE4)

Epsilon Systems Solutions, Inc.; Bath Township (OH); On-site; USD 110,000 - 150,000; Full time

Job summary

Epsilon C5I, a division of Epsilon Systems Solutions, is actively seeking a skilled Full Stack Developer (SE4) or DevSecOps Engineer (SE4) to join our Dayton-area team. We seek candidates who can build secure, scalable, high-performance applications while embedding security throughout the development lifecycle.

The role requires a strong foundation in software development and secure coding practices, with experience in automation, CI/CD pipelines, and cloud-native environments.

Qualifications

• Master’s degree in engineering, computer science, or information technology or equivalent experience.
• Active DoD Top Secret Security Clearance with SCI access.
• U.S. Citizens per government contracting requirements.

Responsibilities

• Maintain and enhance existing systems with new features.
• Deploy new secure systems and networks.
• Conduct post processing and data reduction.
• Apply Scrum framework principles.
• Write analysis reports and develop briefings.
• Work independently and in a team environment.
• Design, develop, and implement web applications.
• Produce well-written, designed, testable and efficient code that meets technical requirements and secure coding practices.

Skills

Node.js

C++

Golang

React

TypeScript

JavaScript

AWS

Azure

GCP

Docker

Kubernetes

Python

Bash

SQL

PostgreSQL

MySQL

MongoDB

GraphQL

REST

Git

Argo CD

Argo Workflows

Grafana

Jaeger

Linux

Microservices

Scrum

Education

Master’s degree in engineering, computer science, or information technology

Tools

Jenkins

GitLab CI

Job description

Epsilon C5I (www.epsilonsystems.com/c5i), a division of Epsilon Systems Solutions, is a 100 percent employee-owned company founded in 1998 with more than 20 locations serving the Department of Defense, Department of Energy, Department of Homeland Security, non-profit and commercial customers.

The Dayton division is one of only five prime awardees for the 10-year, $4.7 billion NOVASTAR contract supporting the National Air and Space Intelligence Center (NASIC), WPAFB, Ohio.

We are seeking a skilled Full Stack Developer (SE4) or DevSecOps Engineer (SE4) to join our dynamic team in building secure, scalable, and high-performance applications. The ideal candidate will bring a strong foundation in software development alongside a keen understanding of secure coding practices, automation, and deployment pipelines.

Whether you are passionate about writing clean, maintainable code across the frontend and backend, or you are focused on integrating security into CI/CD workflows, infrastructure as code, and cloud-native environments, we value your ability to work collaboratively across development, operations, and security teams. You will play a key role in driving innovation, ensuring software quality, and embedding security throughout the development lifecycle. Candidates must be able to work independently and as part of a technical team and have effective oral and written communication skills. Successful candidates will have strong problem solving and critical thinking skills.

Duties And Responsibilities

• Maintain and enhance existing systems in the development of new features
• Deploy new secure systems and network
• Conduct post processing and data reduction
• Apply and follow Scrum framework principles
• Write analysis reports and develop briefings
• Work independently and in a team environment
• Design, develop, and implement web applications
• Produce well-written designed, testable and efficient code that meets technical requirements and secure coding practices

Required Qualifications

• Master’s degree in engineering, computer science, or information technology or two additional years of experience.
• Minimum years of experience: 10
• Applicant Must have an active DoD Top Secret Security Clearance, with SCI access
• Pursuant to the various government contractual requirements, all applicants must be U.S. Citizens.

Desired Qualifications

• Backend: Node.js, C++, Golang, etc.
• CI/CD tools (e.g., Jenkins, GitLab CI)
• React and TypeScript/JavaScript
• Cloud security (AWS, Azure, GCP)
• Container security (Docker, Kubernetes)
• Scripting (Python, Bash)
• Databases: SQL (PostgreSQL, MySQL), NoSQL (MongoDB)
• RESTful APIs, GraphQL
• Git, Docker, Kubernetes
• Argo CD, Argo Workflows
• Grafana, Jaeger
• Linux
• Microservice Architecture
• Ability to work closely with users to troubleshoot code defects and deploy timely fixes
• Ability to participate in a highly collaborative agile SCRUM team environment

ADA Notations

• Regular communication (hearing/speaking).
• Noise conditions range from very quiet to noisy.
• Prolonged use of computer (typing/keyboarding).
• Frequently required to sit for long periods of time, stand, walk, and may occasionally lift and move at least 25 pounds.
• Ability to travel by car, air or other means of transportation, if required.

Epsilon Systems Solutions, Inc. is an equal opportunity employer. Qualified candidates will be considered without regard to legally protected characteristics.