Software Engineer - Mid Level

Leidos LLC; Clarksburg (WV); On-site; USD 70,000 - 126,000; Full time

Benefits offered by this job

Health and Wellness programs

Competitive compensation

Income Protection

Paid Leave and Retirement

Job summary

Leidos seeks a Mid-Level Software Engineer for web applications with full-stack capabilities, building APIs and scalable systems. You’ll contribute across front-end and back-end, participate in CI/CD, and support testing and documentation throughout the release life cycle.

Requirements include a BS degree (or Master’s with less experience), 2–4 years of relevant work, and an active Secret security clearance. Proficiency in Java, JavaScript, Spring Boot, and cloud platforms is needed.

Qualifications

• Typically requires BS degree and 2–4 years of relevant experience or a Master’s with less than 2 years of experience.
• Must hold an active Secret security clearance.
• Expertise in front-end web application development in one or more programming languages is required.
• Proficiency with Java and JavaScript.
• Experience with Spring Boot, relational databases (PostgreSQL, MySQL).
• Experience with cloud platforms (AWS/Azure/GCP).
• Experience with Jira and Confluence.
• Familiarity with Docker and Kubernetes.
• Version control with Git.
• Knowledge of software architecture, design patterns, and scalability.

Responsibilities

• Write and maintain source code and software applications across the release life cycle.
• Document, test, configure, and fix bugs in developed software.
• Collaborate with project managers and technical staff across teams.
• Explain technical solutions and best practices to colleagues.
• Work independently on moderately complex projects to meet objectives.

Skills

Java

JavaScript

Spring Boot

PostgreSQL

MySQL

AWS

Azure

GCP

Jira

Confluence

Docker

Kubernetes

Git

React

Angular

Vue

Education

BS degree in Computer Science or related field

Tools

Jira

Confluence

Git

Docker

Kubernetes

AWS

Azure

GCP

Job description

We are seeking a Mid-Level Software Engineer with a web application development with exposure to full-stack capabilities (front-end, back-end, full-stack) to design, build, test and maintain scalable software systems. This role will play a part in creating front-end and backend services, developing APIs, and collaborating with development team to deliver reliable, high-performance applications. The ideal candidate has experience in web applications, cloud-native architectures, testing, and modern CI/CD practices and tools, while also being comfortable contributing across the full stack when needed. Duties include computer programming, documenting, managing configuration, testing, and bug fixing involved in creating and maintaining applications and frameworks involved in a software release life cycle and resulting in a software product.

Key Responsibilities

Responsible for writing and maintaining source code, creating and maintaining software applications and applying frameworks involved in a software release. Duties include computer programming, documenting, managing configuration, testing, and bug fixing involved in creating and maintaining applications and frameworks involved in a software release life cycle and resulting in a software product. Expertise in one or more programming language is required. Works to achieve day-to-day objectives with moderate impact on the area/ project team. Works independently on larger, moderately complex projects/assignments. May assist other technical staff with tasks and assignments. Communicates with colleagues across multiple areas (project managers, other technical resources, etc.). Explains technical solutions, practices and procedures to others within the organization.

Required Qualifications

• Typically requires BS degree and 2 – 4 years of prior relevant experience or Masters with less than 2 years of prior relevant experience.
• Must hold an active Secret security clearance.
• Expertise in front end web application development in one or more programming languages is required.
• Java
• JavaScript
• Spring Boot
• Knowledge of working with relational databases (PostgreSQL, MySQL, etc.)
• Experience with cloud platforms such as AWS, Azure, or Google Cloud.
• Experience with Agile project management software such as Jira, Confluence, etc.
• Familiarity with containerization technologies like Docker and Kubernetes.
• Experience with version control systems such as Git.
• Knowledge of software architecture, design patterns, and system scalability.

Preferred Qualifications

• Experience with frontend frameworks (React, Angular, or Vue).
• Experience building RESTful APIs and microservices interfaces.
• Experience with Automated testing experience in end-to-end testing, regression testing, integration testing, etc.
• Spring Boot.
• Hibernate
• Hibernate using native queries
• Experience with CI/CD pipelines such as Gitlab.
• Knowledge of infrastructure-as-code (IaC) tools (Hashicorp Terraform, CloudFormation, Ansible).
• Experience with observability tools (Datadog, Prometheus, Grafana, CloudWatch, Elastic Search).
• A working knowledge and experience with the following are preferred as they will be used to complete Software Engineering tasks: SAFe 6, EDB Postgres, an IDE such as Eclipse or IntelliJ, Git, Python, Jenkins, Kubernetes, Argo, Docker, Red Hat Linux, SQL Developer, Jira, Bitbucket, OpenShift, SmartBear ReadyAPI, SoapUI, LoadUi, Java, Spring, Maven/Gradle, ActiveVOS, Camel, NEIM XML, EBTS, SecDevOps.

Key Competencies

• Problem-solving and analytical thinking.
• Passion for quality control and improving engineering practices.
• Excellent communication and collaboration skills.
• Ownership mindset and accountability for deliverables.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting: June 4, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range: Pay Range $69,550.00 - $125,725.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers.

• competitive compensation
• Health and Wellness programs
• Income Protection
• Paid Leave and Retirement

More details are available here.

Securing Your Data

Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.