Senior Full Stack (React/Node) Developer

The Digital Modernization Sector has an opening for a Senior Full Stack (React/Node) Developer to work onsite in Woodlawn, MD five days a week

Responsibilities:

• Architect, design, code, and implement next-generation web application using software engineering best practices in the latest technologies: NodeJS, Single Page Application front-end (ReactJS, ReduxJS, MobxJS), NodeJS API Framework (RESTful APIs, Express, Knex), and DevOps (Jenkins, Red Hat OpenShift, Docker, SonarQube, UrbanCode).
• Provide software expertise in one or more of these areas: Rich Single Page Application modular user interfaces, secure RESTful API micro-services, 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.

 (Basic Qualifications)

• Bachelor's degree in Computer Science, Mathematics, Engineering, or a related field and 12 years of overall experience.  Additional years of experience may be substituted in lieu of degree.
• Master’s or Doctorate degree may substitute for required experience
• 10+ years of experience in modern software development with a solid understanding of designing, building, deploying, and running applications.
  • Combined experience building web applications with modern technologies (Node, React, Redux, Mobx, Flux, Typescript, Bootstrap).
• Must be able to obtain and maintain a public trust clearance.

 (Required Skills)

These skills will help you succeed in this position:

• Extensive senior level full-stack software development experience with React.js and Node.js  with detailed understanding of user interface frameworks, back-end software architecture interactions and node module capabilities.
• Strong experience with JavaScript frameworks/technologies such as React.js, Express.js, MobX, Redux or Flux.js.
• Strong development experience with developing RESTful Web Services using Node.js.
• Comprehensive knowledge of Scrum and Kanban Agile development process and TDD, BDD, ceremonies including scrums, planning events, backlog grooming, retrospectives and demos.
• Experience with complex programming, program debugging, data analysis, problem analysis and resolution of issues within open-source applications.
• Strong communication and collaborative skills in providing technical direction and hands-on software development to include design, development and testing. 
• Expertise in writing complex SQL queries in PostgreSQL and optimizing queries.
• Experience working as part of a large team and managing and resolving merge conflicts and working with upstream and downstream dependencies.
• Ability to mentor team members on Node.js and React technologies.

 (Desired Skills)

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

• Experience with HTML/CSS creation and manipulation.
• Experience with other JavaScript frameworks such as Express, Restify, Hapi, Sails, JOI, Moment, Axios and Knex.
• Experience with Agility (previously VersionOne) application lifecycle management tool
• Experience with Jenkins, Continuous Integration, and DevOps processes and implementation.
• Experience with databases (e.g., PostgreSQL) and Solr.
• Standards and protocols knowledge including XML, XSLT, WSDL, JSON.
• Experience with testing tools including Mocha, Chai, Jest, Sinon, Supertest, Enzyme, Instanbul, Selenium, Load Runner, JSLint and Cucumber.
• Experience with source code versioning and Pull Requests with Git and Stash.
• Experience with IDEs such as VS code.
• Knowledge of SonarCube, Phabricator, Gerritt, Karma, Jasmine
• Experience with performance tuning and increasing efficiency of a large enterprise system
• Knowledge of projects using SAFe methodology.
• Experience with environments utilizing Cloud Technologies such as Amazon Web Services.
• Experience with NGiNX web server.
• Experience with MQLight, Redis In-memory data structure store and message broker.

Original Posting:

April 28, 2025

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 $126,100.00 - $227,950.00

The Leidos pay range for this job