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From the employer's careers site First seen 26 Oct 2026

Senior Software Developer

Leidos Gaithersburg, MD senior full-time

Salary

$107,900 - $195,050 per year

Apply on Leidos

Description

As a Senior Software Developer, you'll play a key role in designing, developing, testing, and deploying secure, scalable applications that support enterprise and mission operations.

You will:

  • Design, develop, test, deploy, and maintain enterprise software applications using modern development practices.
  • Collaborate with Product Owners, Scrum Masters, architects, and fellow developers to deliver high-quality software in Agile sprints.
  • Participate in sprint planning, backlog refinement, daily stand-ups, sprint reviews, and retrospectives.
  • Develop clean, maintainable, and well-documented code following secure coding standards and best practices.
  • Design and implement RESTful APIs, microservices, and distributed application architectures.
  • Perform code reviews and mentor junior developers to promote engineering excellence and knowledge sharing.
  • Troubleshoot complex application issues and perform root cause analysis to improve system reliability and performance.
  • Develop automated unit, integration, and end-to-end tests to ensure software quality.
  • Collaborate with DevSecOps teams to implement CI/CD pipelines and automated deployment processes.
  • Optimize application performance, scalability, and security across enterprise environments.
  • Participate in architecture discussions and contribute to technical roadmaps and modernization initiatives.
  • Support production deployments and resolve issues in mission-critical environments

Requirements:

  • US citizenship is required per contract.
  • Bachelor's degree in Computer Science, Software Engineering, or related field and 8-12 years of prior relevant experience or Master's with 6-10 years of prior relevant experience.
  • 8+ years of professional software development experience.
  • Strong proficiency in one or more object-oriented programming languages such as Java, C#, Python, C++.
  • Experience developing web-based applications and enterprise software solutions.
  • Experience designing and consuming REST APIs.
  • Experience working with relational and/or NoSQL databases.
  • Strong understanding of object-oriented design principles and software design patterns.
  • Experience using Git or other distributed version control systems.
  • Experience working within Agile Scrum or SAFe development environments.
  • Excellent analytical, debugging, and problem-solving skills.
  • Strong written and verbal communication skills.

Preferred qualifications:

  • Experience developing cloud-native applications in AWS, Azure, or other cloud platforms.
  • Experience with containerization technologies such as Docker and Kubernetes.
  • Experience building microservices architectures.
  • Familiarity with DevSecOps practices and CI/CD tools including Jenkins, GitLab CI, or Azure DevOps.
  • Experience with Infrastructure as Code tools such as Terraform or Ansible.
  • Knowledge of message brokers such as Kafka or RabbitMQ.
  • Experience with front-end frameworks such as React, Angular, or Vue.js.
  • Familiarity with Elasticsearch, Redis, or other enterprise technologies.
  • Experience with secure software development lifecycle (SSDLC) practices.
  • Security+ certification or other DoD 8570/8140 compliant certification.

Skills

Required

Nice to have

Ready to apply?

You apply with the employer directly. Their original posting is here: https://leidos.wd5.myworkdayjobs.com/en-US/External/job/Gaithersburg-MD/Sr-Software-Developer_R-00188991

Apply on Leidos