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Job Details

Senior Full Stack React/PHP Developer


Full Stack Developer


Baltimore, Maryland, United States


Leidos is seeking a Senior Full Stack React/PHP Developer to be part of the mission solution and help lead SSA’s Digital Modernization Strategy. Join one of our high performing teams responsible for building the next-generation content management system, enterprise APIs and modern responsive user interfaces, supporting the Social Security Administration (SSA) and their mission to meet the changing needs of the public, positively impacting at least 65 million American lives per month. We are a team of forward-looking professionals in need of a strong candidate with these key required skills: Modern Development (PHP, Java EE with SpringBoot, Python, C# with .Net Core), Relational Databases (PostgreSQL, DB2, or Oracle), Agile Development, SOA/Microservice architecture, and React. (max 255 characters)

If this sounds like a mission you want to be a part of, keep reading!


Your passion and values might be a good fit for our teams if you answer “yes” to the following questions:

  • Are you looking for a company that puts employees first, with a focus on career, flexibility, and well-being?
  • Do you enjoy collaborating with colleagues and teammates and believe that the best ideas are fostered in an inclusive environment?
  • Are you searching for a team with a strong sense of ownership, urgency, and drive for daily mission success?
  • Are you comfortable with proactive outward communication and technical leadership?
  • Do you enjoy being a catalyst, solving complex problems, and providing innovative solutions?
  • Do you have the flexibility, creativity, and resilience to pivot the mission for success?
  • Do you have the courage to make tough ethical decisions with pride, transparency, and respect?


Our teams are dedicated to supporting new team members in an environment that celebrates knowledge sharing and mentorship. Experienced team members will be assigned to new hires for one-on-one mentoring, collaborative reviews, and coaching on customer engagement to help each new hire successfully onboard and demonstrate their skills. Projects and tasks are assigned in a way that leverages your strengths and will help you further develop your skillset.


Every position we take is more rewarding when you know the why behind it. Know your work makes a difference to support those who need it most. If your passion is enabling life changing service to those around, you this is the place for you. Find you passion in a team environment where all members are valued regardless of contractor or employee status. Find your “Why” with us and take your place in our Leidos Family!!

  • Architect, design, develop, and implement next-generation web application using software engineering best practices in the latest technologies:
    • Single Page Application front-end (React, Angular, NodeJS, Sass, Typescript)
    • Content Management System (Drupal, WordPress)
    • DevOps (Jenkins, Red Hat OpenShift, Docker, SonarQube, UrbanCode)
  • Provide software expertise in one or more of these areas: PHP application integration, Drupal, service oriented architectures (SOA), security, business process management/business rules processing, module integration, user experience (UX) and accessibility (Section 508/WCAG/USDS Web Standards)
  • Investigate and repair application defects regardless of component: front-end, business logic, middleware, or database (PL/SQL and Data Modeling).
  • Brief management, customer, team, or vendors using written or oral skills at appropriate technical level for audience
  • All other duties as assigned or directed

FOUNDATION FOR SUCCESS (Basic Qualifications)

  • Bachelor's Degree in Computer Science, Mathematics, Engineering or a related field.
  • Master’s or Doctorate degree may substitute for required experience
  • 8+ years of combined experience with modern software development (PHP, Java EE with SpringBoot, Python, C# with .Net Core)
  • 3+ years of combined experience web development and building responsive UIs with modern front-end technologies
  • 2+ years of combined experience with Content Management Systems (Drupal, WordPress)
  • Must be able to obtain and maintain a Public Trust. Contract requirement.

*** Selected candidate must reside within two (2) hours of SSA Headquarters in Woodlawn, MD

*** Selected candidate must be willing to work on-site at least 2 days a week.


These skills will help you succeed in this position:

  • Solid understanding of modern PHP frameworks (Drupal, Laravel, Symfony, Zend).
  • Basic knowledge of PHP’s type system (typed properties and union types).
  • Basic experience with concurrent programming (pthreads, pcntl, ReactPHP).
  • Solid knowledge of relational databases (PostgreSQL, DB2, and Oracle), SQL, and ORM technologies (RedBeanPHP, Doctrine, and Eloquent).
  • Solid experience with automated unit testing, TDD, BDD, and associated technologies (PHPUnit, PHPSpec, Mockito, Behat / Cucumber, Selenium, and Karma/Jasmine).
  • Development experience with building responsive UIs with modern front-end technologies such as React, or Angular.
  • Solid knowledge of front-end technologies (HTML, Modern JavaScript, Typescript, JQuery, and CSS).
  • Basic understanding of DevOps and tools (Git/Bitbucket, Jenkins, SonarQube).
  • Experience with API development & monitoring tools (Ready API, Swagger, Splunk, Dynatrace)
  • Experience working on Agile projects and understanding Agile terminology.


Showcase your knowledge of modern development through the following experience or skills:

  • Preferred experience with AWS cloud technologies or other cloud platforms; AWS cloud certifications.
  • Experience with PaaS (Red Hat OpenShift/Kubernetes) and Docker containers.
  • Delivery (CI/CD) best practices and use of DevOps to accelerate quality releases to Production.
  • Preferred experience integrating / establishing advance search capabilities (AWS Kendra).
  • Basic understanding of Enterprise Integration Patterns.
  • An in-depth knowledge of Social Security Administration (SSA).

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams and contribute to our communities. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business. Every position we take is more rewarding when you know the why behind it. Know your work makes a difference to support those who need it most. If your passion is enabling life changing service to those around, you this is the place for you. Find your passion in a team environment where all members are valued regardless of contractor or employee status. We are excited for you to take your place in our Leidos Family.

Are you an US citizen, US resident, or Visa candidate and think you might fit? We recommend you apply and start the conversation today! Join us in supporting our SSA contracts in Woodlawn, Maryland.


Original Posting Date:


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 $81,250.00 - $146,875.00

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.