[Remote] Senior Full Stack Developer

Note: The job is a remote job and is open to candidates in USA. By Light Professional IT Services LLC is a technology company that supports defense, civilian, and commercial IT customers worldwide. They are seeking a highly skilled Senior Full Stack Developer to join their software development and network engineering team, responsible for designing, integrating, producing, testing, and deploying cyber range environments.ResponsibilitiesDevelop and maintain a modern, responsive web interfaceBuild backend scoring services, databases, and automated scoring agents for Windows and LinuxConduct system testing within integrated cyber range environmentsCreate and maintain administrative, technical, and end‑user documentationCollaborate with the RangeOS development team to ensure seamless integration with versioned cyber rangesContribute to solution designs that align with requirements and system constraintsEstimate effort, complexity, and timelines for assigned tasksImplement clean, efficient, and maintainable code using modern programming practicesSelect optimal algorithms and approaches to solve technical problemsApply sound logic and design principles to feature developmentFollow established coding conventions and standardsDocument code structures, logic flows, and module behaviorProduce clear technical documentation for developers, engineers, and stakeholdersDevelop customer‑facing documentation as requiredPerform unit testing to validate functionalitySupport integration and validation testing across complex system environmentsSkillsBachelor's degree in a computer‑related field and 3+ years of web development experience, or 6+ years of equivalent professional experience8570 IAT Level II certification or ability to obtain certification within 6 monthsStrong full‑stack development background, including:Proficiency in one or more of the following: Node.js, React, jQuery/JavaScript, PostgreSQL or MySQL, AMQPExpertise with Git‑based source control (Git, Bitbucket)Experience developing system services and daemonsUnderstanding of Linux virtualization concepts (KVM)Experience with Node.js frameworks such as Express, OpenAuth, and Socket.ioFamiliarity with AMQP or similar message‑oriented middlewareWorking knowledge of networking, Linux, Windows, testing practices, and Agile SDLCExperience with cyber ranges, cyber training platforms, or simulation environmentsUnderstanding of orchestrated training events, exercise lifecycle, and multi‑vendor tool integrationFamiliarity with infrastructure automation (Terraform preferred)Ability to operate across complex, multi‑vendor, hybrid environments (RCS/ECS/cloud)DoD Top Secret security clearance (Or the ability to obtain one)Up to 10% travelContainerization experience (Docker, image optimization)CI/CD pipeline development (GitHub Actions, GitLab CI, Jenkins)Cloud platform experience (AWS, Azure, GCP)Knowledge of microservices and serverless architecturesStrong REST API design and versioning practicesAuthentication and authorization implementationExperience with background processing, queues, and event‑driven architecturesAbility to design maintainable, modular business logicCompany OverviewBY LIGHT Professional IT Services is a provider of IT, cloud, cyber and infrastructure solutions to the US Federal Government. It was founded in 2002, and is headquartered in Arlington, Virginia, USA, with a workforce of 1001-5000 employees. Its website is http://www.bylight.com.