{"id":2949340,"url":"https://alion.io/job/kbr-principal-software-engineer","title":"Principal Software Engineer","company":{"id":4344,"name":"KBR","domain":"kbr.com","url":"https://alion.io/company/kbr","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":80,"open_postings":75,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":9,"computed_at":"2026-10-22T06:10:10Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["El Segundo, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":150000,"max":190000,"currency":"USD","period":"year","gross":null,"usd_annual":190000},"salary_estimate":null,"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Angular","optional":false},{"name":"Apache Kafka","optional":false},{"name":"CI/CD","optional":false},{"name":"Flink","optional":false},{"name":"Grafana","optional":false},{"name":"Kubernetes","optional":false},{"name":"Microsoft Office","optional":false},{"name":"NATS","optional":false},{"name":"OpenTelemetry","optional":false},{"name":"Platform Engineering","optional":false},{"name":"Prometheus","optional":false},{"name":"RabbitMQ","optional":false},{"name":"SBOM","optional":false},{"name":"JavaScript","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-08-24T00:00:00Z","employer_posted_date":"2026-08-24","last_verified_at":"2026-10-22T17:09:14Z","board_verified":true,"closed_at":null,"days_open":59,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":59},"description":"Title:\nPrincipal Software EngineerBelong. Connect. Grow. with KBR!\nKBR is seeking an experienced Principal Software Engineer to support the MSEIT contract at Space Systems Command (SSC). This role combines hands-on software development, technical leadership, and architecture support across multiple mission-focused software teams supporting U.S. Space Force capabilities.\nUnlike engineers dedicated to a single application or team, this position operates across multiple development efforts, helping solve complex technical challenges, accelerate delivery, improve architectural consistency, and support integration across mission systems.\nThe successful candidate will be equally comfortable writing production code, reviewing architectural decisions, mentoring development teams, and collaborating with systems engineers, product owners, and mission stakeholders. This role serves as a technical force multiplier across the program and helps ensure consistency in engineering practices, architectural approaches, and software quality.\nThe program is built around modern software engineering practices, event-driven architectures, cloud-native technologies, DevSecOps, and CI/CD-oriented delivery approaches.\nWhy Join Us?\nInnovative Projects: KBR’s work is at the forefront of engineering, logistics, operations, science, program management, mission IT and cybersecurity solutions.\n\nCollaborative Environment: Be part of a dynamic team that thrives on collaboration and innovation, fostering a supportive and intellectually stimulating workplace.\n\nImpactful Work: Your contributions will be pivotal in designing and optimizing defense systems that ensure national security and shape the future of space defense.\n\nResponsibilities:\nFull Stack Development: Design, develop, test, and maintain mission-critical software applications across front-end, back-end, and service layers.\n\nTechnical Leadership: Provide hands-on technical leadership and engineering guidance across multiple software teams.\n\nArchitecture Development: Help define and evolve application, integration, data, and event-driven architectures supporting enterprise mission objectives.\n\nEvent-Driven Systems Design: Design and implement scalable event-driven architectures supporting distributed mission systems.\n\nEnterprise Integration: Develop and guide integration patterns supporting interoperability across mission applications and operational environments.\n\nFront-End Development: Develop modern user interfaces using Angular and related technologies.\n\nBack-End Development: Design and implement scalable services, APIs, and distributed application components.\n\nCross-Team Problem Solving: Assist teams in resolving complex software, performance, scalability, integration, and architectural challenges.\n\nDevSecOps Collaboration: Partner with platform engineering and DevSecOps teams to improve software delivery pipelines, automation, observability, and deployment practices.\n\nEngineering Excellence: Promote best practices in software design, code quality, testing, maintainability, resiliency, and security.\n\nTechnical Mentorship: Mentor engineers through design reviews, architecture discussions, code reviews, and collaborative development.\n\nMission Collaboration: Work closely with systems engineers, product owners, users, and operational stakeholders to translate mission needs into technical solutions.\n\nWork Environment:\nLocation: El Segundo, CA (Work-from-home flexibility with on-site support as required)\n\nTravel Requirements: Minimal\n\nWorking Hours: Standard\n\nRequired:\nAbility to obtain and maintain a DoD Secret clearance\n\nBachelor's degree in computer science, software engineering, computer engineering, or related technical field\n\n10+ years of professional software development experience\n\nExtensive experience designing and developing distributed software systems\n\nStrong full stack development experience across modern web and enterprise application architectures\n\nExpert-level experience with Angular or similar modern front-end frameworks\n\nStrong experience designing and implementing scalable backend services and APIs\n\nExtensive experience with Kafka and event-driven architecture patterns\n\nStrong understanding of asynchronous messaging, event streaming, and distributed systems design\n\nExperience designing and implementing enterprise integration patterns\n\nExperience working within Agile software development environments\n\nStrong understanding of DevSecOps practices and CI/CD delivery pipelines\n\nDemonstrated ability to influence technical direction across multiple teams and projects\n\nStrong communication, leadership, and technical mentoring skills\n\nProficient in Microsoft Office products (Word, Excel, Powerpoint)\n\nDesired:\nActive Secret or higher clearance\n\nMaster's degree in computer science, software engineering, computer engineering, or related technical field\n\nExperience supporting Space Systems Command (SSC), Space Operations Command (SpOC/CFC), or related DoD programs\n\nExperience supporting SATCOM, mission systems, operational C2 systems, or space-related applications\n\nExperience with microservices architectures and service-oriented design\n\nExperience with Kubernetes-based deployment environments\n\nExperience developing applications within cloud-native environments\n\nFamiliarity with API gateways, service meshes, and modern integration frameworks\n\nExperience participating in architecture review boards and technical governance activities\n\nFamiliarity with AI-enabled mission systems or data-driven operational platforms\n\nExperience working across independently contracted software development teams\n\nExperience with Kafka Streams, Apache Flink, RabbitMQ, NATS, or similar event-processing technologies\n\nExperience implementing observability platforms using OpenTelemetry, Prometheus, Grafana, ELK, or similar technologies\n\nExperience with software supply-chain security, SBOM generation, and DevSecOps security tooling\n\nExperience working within software factory or platform engineering environments\n\nExperience supporting large-scale modernization or enterprise transformation efforts\n\nCertifications such as INCOSE CSEP/ESEP\n\nBasic Compensation: $150,000 to $190,000 in El Segundo, CA\nThe offered rate will be based on the selected candidate’s knowledge, skills, abilities and/or experience and in consideration of internal parity.\nReady to Make a Difference? If you’re excited about making a significant impact in the field of space defense and working on projects that matter, we encourage you to apply and join our team.\nKBR Benefits\nKBR offers a selection of competitive lifestyle benefits which could include 401K plan with company match, medical, dental, vision, life insurance, AD&D, flexible spending account, disability, paid time off, or flexible work schedule. We support career advancement through professional training and development.\nBelong, Connect and Grow at KBR\nAt KBR, we are passionate about our people and our Zero Harm culture. These inform all that we do and are at the heart of our commitment to, and ongoing journey toward being a People First company. That commitment is central to our team of team’s philosophy and fosters an environment where everyone can Belong, Connect and Grow. We Deliver - Together.\nKBR is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, disability, sex, sexual orientation, gender identity or expression, age, national origin, veteran status, genetic information, union status and/or beliefs, or any other characteristic protected by federal, state, or local law.","description_format":"text","description_chars":7631,"description_truncated":false,"requirements":{"experience_years_min":10,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":["401k plan","Flexible schedule","Life insurance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Military Logistics","Space Services","Engineering Services"],"lifecycle":[{"event":"open","at":"2026-10-20T19:30:30Z"}],"visa":[],"liveness":{"score":8,"band":"cold","label":"Long shot","p_open":1,"p_active":0.28,"p_room":0.28,"age_days":59,"expected_fill_days":9,"reasons":["conf:0","stale_co","velocity","win:tail","crowd:brand"],"computed_at":"2026-10-22T06:10:10Z"},"pay":{"stated_usd_annual":190000,"is_top_pay":false},"html_url":"https://alion.io/job/kbr-principal-software-engineer","json_url":"https://alion.io/job/kbr-principal-software-engineer.json","meta":{"generated_at":"2026-10-22T18:18:57Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":895,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-23T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":4344},"rest":"https://alion.io/mcp/rest/get_company?id=4344"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fkbr-principal-software-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fkbr-principal-software-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fkbr-principal-software-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/kbr-principal-software-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fkbr-principal-software-engineer"}]}