Leidos

Software Engineer SME

Leidos
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1 day ago
St. Louis, MO, USA +5 moreStaff+
H1B sponsor

Base Salary

$131k - $237k/yr

Responsibilities

  • Serve as the senior technical SME and advisor for mission applications under the Chinook Program.
  • Design, develop, integrate, test, deploy, and maintain modern web applications and backend services.
  • Build scalable software across front-end and back-end tiers, including RESTful APIs, microservices, data services, and system integrations.
  • Translate mission and technical requirements into software architecture and implementation plans.
  • Provide technical leadership for software design, architecture, coding standards, code reviews, and engineering practices.
  • Build responsive front-end interfaces and optimize database schemas, queries, data-access layers, and data-processing workflows.
  • Troubleshoot application, integration, performance, and production issues.
  • Support automated testing, CI/CD, DevSecOps, containerized applications, and cloud-enabled environments.
  • Mentor junior and mid-level software engineers and promote consistent engineering practices.
  • Evaluate technologies and improve application performance, reliability, security, scalability, and maintainability.

Requirements

  • Bachelor's degree in Computer Science, Software Engineering, or a related field with 12–15 years of relevant experience, or a master's degree with 10–13 years of relevant experience.
  • Active Top Secret/SCI clearance and ability to successfully pass a polygraph examination.
  • U.S. citizenship is required per contract.
  • Proficiency with HTML, CSS, JSON, REST APIs, Python, Java, JavaScript, and Go.
  • Experience with front-end and back-end frameworks including React, Angular, Vue.js, jQuery, Spring Boot, Django, Node.js, Flask, or Svelte.
  • Experience with AWS, IBM Cloud, Google Cloud, Microsoft Azure, Oracle Cloud, AWS C2S/GovCloud, Terraform, and CloudFormation.
  • Experience with Docker, Kubernetes, GitLab CI/CD, Jenkins, SonarQube, Nexus, Keycloak, and Vault.
  • Experience with MySQL, PostgreSQL, SQL Server, OpenSearch, or Elasticsearch, as well as Windows, Linux, and Git.
  • Knowledge of Agile/Scrum practices and tools including JIRA and Confluence.
  • Understanding of OGC WMS/WFS, NSG, GEOINT workflows, messaging/event-driven architecture, observability, logging, monitoring, and application performance management.
  • Preferred qualifications include Intelligence Community mission-system experience, UI/UX experience, and certifications such as AWS Certified Developer, AWS Certified Solutions Architect, CISSP, or SAFe Agile.

Benefits

  • Position may be performed in Gaithersburg, Maryland; Alexandria or Chantilly, Virginia; Englewood, Colorado; St. Louis, Missouri; or Tucson, Arizona.
  • The role supports a high-impact national security and Intelligence Community mission.

Tech Stack

AngularAWSAzureCSSDjangoDockerElasticsearchFlaskGitGitLab CI/CDGoGoogle CloudHTMLIBM CloudJavaJavaScriptJenkinsjQueryKubernetesLinuxMicrosoft SQL ServerMySQLNode.jsOracle CloudPostgreSQLPythonReactSonarQubeSpring BootSvelteTerraformVaultVue.jsWindows

Categories

Leidos

About Leidos

10,000+ employees

Leidos builds and operates technology and engineering solutions for defense, intelligence, civil, and health agencies, including systems integration, cyber, enterprise IT, sensors, and healthcare IT. It primarily sells through government contracts and long-term programs, plus managed services and mission software. Founded in 1969 and headquartered in Reston, Virginia, Leidos is a Fortune 500 public company on the NYSE; customers include U.S. defense and intelligence agencies and civil bodies such as the FAA.

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