**Description** Leidos is seeking a **Senior Full Stack (React/Node) 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 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_ : React, Node, Redux, Mobx, Flux, Typescript, and Bootstrap. **_If this sounds like a mission you want to be a part of, keep reading!_** **TEAM CULTURE** _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? **MENTORSHIP & CAREER GROWTH** 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. **DAY TO DAY RESPONSIBILITIES** 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, 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. **FOUNDATION FOR SUCCESS** **(** **_Basic Qualifications_** **)** + Bachelor's Degree in Computer Science, Mathematics, Engineering, or a related field. 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). ******* 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.** **FACTORS TO HELP YOU SHINE** **(** **_Required Skills_** **)** _These skills will help you succeed in this position:_ + Extensive senior level full-stack software development experience with Node.jsand React.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, Reduxor 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. + 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 optimize queries. + Experience with 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. **HOW TO STAND OUT FROM THE CROWD** **_(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 VersionOne Application Lifecycle Management Tools + Experience with Jenkins and Continuous Integration. + Experience with databases PostgreSQL and SOLR. + Standards & 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 DevOps processes and implementation. + 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. 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._** ITSSCII **Original Posting Date:** 2024-10-15 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 $101,400.00 - $183,300.00 The Leidos pay range for this job level is a general guideline onlyand 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. REQNUMBER: R-00146257 All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. Leidos will consider qualified applicants with criminal histories for employment in accordance with relevant Laws. Leidos is an equal opportunity employer/disability/vet.