{"id":1503094,"url":"https://alion.io/job/by-light-senior-full-stack-developer","title":"Senior Full Stack Developer","company":{"id":1964053,"name":"By Light","domain":"bylight.com","url":"https://alion.io/company/bylight","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"iCIMS","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":134000,"max_usd":225000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":763},"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Amazon ECS","optional":false},{"name":"Bitbucket","optional":false},{"name":"Git","optional":false},{"name":"JavaScript","optional":false},{"name":"JQuery","optional":false},{"name":"KVM","optional":false},{"name":"Linux","optional":false},{"name":"MySQL","optional":false},{"name":"Node JS","optional":false},{"name":"PostgreSQL","optional":false},{"name":"React.js","optional":false},{"name":"Socket.IO","optional":false},{"name":"Terraform","optional":false},{"name":"Windows","optional":false},{"name":"AWS","optional":true},{"name":"Azure","optional":true},{"name":"CI/CD","optional":true},{"name":"Docker","optional":true},{"name":"GCP","optional":true},{"name":"GitHub Actions","optional":true},{"name":"GitLab CI","optional":true},{"name":"Jenkins","optional":true},{"name":"Rest API","optional":true}],"status":"live","first_seen_at":"2026-09-30T04:41:54Z","employer_posted_date":"2026-09-30","last_verified_at":"2026-09-30T14:00:37Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"Company Overview\nBy Light Professional IT Services LLC readies warfighters and federal agencies with technology and systems engineered to connect, protect, and prepare individuals and teams for whatever comes next. Headquartered in McLean, VA, By Light supports defense, civilian, and commercial IT customers worldwide.\nPosition Overview\nBy Light is seeking a highly skilled Senior Full Stack Developer to join a software development and network engineering team responsible for designing, integrating, producing, testing, and deploying cyber range environments worldwide. This role operates with minimal supervision and spans requirements analysis, architecture, coding, testing, validation, and research in support of advanced cyber training systems.\nResponsibilities\nDevelop and maintain a modern, responsive web interface.\nBuild backend scoring services, databases, and automated scoring agents for Windows and Linux.\nConduct system testing within integrated cyber range environments.\nCreate and maintain administrative, technical, and end-user documentation.\nCollaborate with the RangeOS development team to ensure seamless integration with versioned cyber ranges.\nAnalysis and Design\nContribute to solution designs that align with requirements and system constraints.\nEstimate effort, complexity, and timelines for assigned tasks.\nCoding\nImplement clean, efficient, and maintainable code using modern programming practices.\nSelect optimal algorithms and approaches to solve technical problems.\nApply sound logic and design principles to feature development.\nFollow established coding conventions and standards.\nDocumentation\nInternal: Document code structures, logic flows, and module behavior.\nProcess: Produce clear technical documentation for developers, engineers, and stakeholders.\nExternal: Develop customer-facing documentation as required.\nDemonstrate strong written, verbal, and presentation skills.\nTesting\nPerform unit testing to validate functionality.\nSupport integration and validation testing across complex system environments.\nRequired Experience/Qualifications\nBachelor’s degree in a computer-related field and 3+ years of web development experience, or 6+ years of equivalent professional experience.\n8570 IAT Level II certification or ability to obtain certification within 6 months\nStrong full-stack development background, including:Proficiency in one or more of the following: Node.js, React, jQuery/JavaScript, PostgreSQL or MySQL, AMQP.\nExpertise with Git-based source control (Git, Bitbucket).\nExperience developing system services and daemons.\nUnderstanding of Linux virtualization concepts (KVM).\nExperience with Node.js frameworks such as Express, OpenAuth, and Socket.io.\nFamiliarity with AMQP or similar message-oriented middleware.\nWorking knowledge of networking, Linux, Windows, testing practices, and Agile SDLC.\n\nExperience with cyber ranges, cyber training platforms, or simulation environments.\nUnderstanding of orchestrated training events, exercise lifecycle, and multi-vendor tool integration.\nFamiliarity with infrastructure automation (Terraform preferred).\nAbility to operate across complex, multi-vendor, hybrid environments (RCS/ECS/cloud).\nPreferred Experience/Qualifications\nContainerization experience (Docker, image optimization).\nCI/CD pipeline development (GitHub Actions, GitLab CI, Jenkins).\nCloud platform experience (AWS, Azure, GCP).\nKnowledge of microservices and serverless architectures.\nStrong REST API design and versioning practices.\nAuthentication and authorization implementation.\nExperience with background processing, queues, and event-driven architectures.\nAbility to design maintainable, modular business logic.\nSpecial Requirements/Security Clearance\nDoD Top Secret security clearance (Or the ability to obtain one)\nUp to 10% travel","description_format":"text","description_chars":3808,"description_truncated":false,"requirements":{"experience_years_min":6,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Cybersecurity","Military","Science & Engineering"],"lifecycle":[{"event":"open","at":"2026-09-30T04:41:54Z"}],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":1,"expected_fill_days":7,"reasons":["conf:15","velocity","win:early"],"computed_at":"2026-10-01T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/by-light-senior-full-stack-developer","json_url":"https://alion.io/job/by-light-senior-full-stack-developer.json","meta":{"generated_at":"2026-10-02T02:12:40Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":2861,"day_limit":5000,"remaining_today":2139,"minute_limit":60,"resets_at":"2026-10-03T00:00:00Z"}}}