Mid-Level Software Engineer Job Laurel Maryland USA,Software Development

Belay Technologies has been voted Baltimore Business Journal's (BBJ) Best Places to Work 2026!

Belay Technologies is seeking a Software Engineer (Sustainment) to join our intel team. This position is ideal for a hands‑on engineer who enjoys working across multiple technologies and technical disciplines. The selected candidate will support a diverse portfolio of Commercial Off-the‑Shelf (COTS) and Government Off-the‑Shelf (GOTS) enterprise applications utilizing both modern and legacy technology stacks. Responsibilities may include application development, system integration, application configuration and customization, cloud modernization, and production sustainment.

Success in this role requires adaptability, strong technical problem‑solving skills, and the ability to quickly learn new technologies as mission priorities evolve. The ideal candidate is a versatile software developer with experience building and supporting enterprise applications. You should be comfortable working with Java, JavaScript, Oracle databases, and SQL, and have the aptitude and willingness to learn additional programming languages, frameworks, and technologies based on the needs of the products and applications you support.

Primary Responsibilities:

Maintain, enhance, and modernize backend services developed using Java and Spring Boot.
Develop, maintain, and troubleshoot software using JavaScript and other programming languages and technologies as required by the product.
Work with Oracle databases and SQL to develop, troubleshoot, optimize, and support application data and database interactions.
Learn and apply additional programming languages, frameworks, tools, and technologies as required by evolving application and mission needs.
Update software requirements, libraries, frameworks, and dependencies to ensure applications remain secure, supported, and maintainable.
Analyze and implement code changes resulting from dependency, framework, and technology upgrades.
Perform application maintenance activities, including troubleshooting, root‑cause analysis, issue identification, and defect resolution.
Design and implement code enhancements and technical improvements based on customer, program, and operational requirements.
Collaborate with customers, software developers, systems engineers, and other stakeholders to deliver timely and effective solutions.
Participate in Agile ceremonies and contribute to sprint planning, estimation, technical discussions, and continuous improvement activities.
Support application deployments, troubleshooting, and operational activities within Linux and Docker‑based environments.
Contribute to the long‑term stability, reliability, security, performance, and modernization of mission‑critical enterprise applications.

Technology Stack:

Java
Java Script
AWS
MySQL
Linux
Maven
Sprin Goot
Docker
Angular
Git
Git Lab
Atlassian Tool Suite
Oracle
Node.

JS
Maven

Candidates should have the following qualifications:

TS/SCI Clearance with polygraph
A bachelor’s degree and six (6) years of experience in software development/ engineering in programs and contracts of similar scope, type, and complexity. Ten (10) years of software development experience may be substituted in lieu of a bachelor’s degree.
Experience with Java development.
Experience working with Oracle databases, including SQL development.
Experience with a JavaScript framework such as Angular.
Experience developing in the Linux operating system.
Experience with Docker for containerized application deployment and management.
Must be able to work between the core hours of 10AM-2PM. Exceptions will be considered on a case‑by‑case basis.

Candidates are desired to have the following skills:

AWS experience
Experience in an Agile development environment
Experience in an Agile…