Software Engineer - Mid Level

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

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.