{"id":775045,"url":"https://alion.io/job/worldscape-principal-software-engineer-full-stack","title":"Principal Software Engineer - Full Stack","company":{"id":688159,"name":"Worldscape","domain":"worldscape.ai","url":"https://alion.io/company/worldscape","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"C","score":56,"open_postings":11,"ghost_share":0.727,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-01T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Redmond, United 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Search","optional":true}],"status":"live","first_seen_at":"2026-02-18T03:04:16Z","employer_posted_date":"2026-02-18","last_verified_at":"2026-10-01T04:11:33Z","board_verified":true,"closed_at":null,"days_open":225,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":225},"description":"Responsibilities:\nLead the design and development of scalable, high-performance distributed systems.\nOwn and document solution architectures, clearly articulating technical approaches and value propositions.\nDrive feature and component delivery through sprint planning, execution, and resolution of complex, ambiguous challenges.\nProvide technical leadership through code reviews, ensuring solutions meet Worldscape’s quality, security, and performance standards.\nMentor and develop engineers, fostering a culture of collaboration, accountability, and continuous learning.\nInnovate and optimize platform features to improve performance, reliability, and scalability.\nPartner closely with internal and external stakeholders to ensure seamless collaboration and execution.\nContribute to the long-term technical vision, product roadmap, and architectural strategy.\nTriage, mitigate, and resolve customer issues, and help establish and reinforce a strong on-call culture.\nChampion a DevOps mindset, emphasizing platform ownership, customer support, and accountability for uptime, reliability, and service health metrics.\nProfessional Qualifications:\nBachelor’s degree in Computer Science, Engineering, Information Technology, or a related field.\n10+ years of experience delivering complex technology solutions, including architecture, platform development, consulting, or deep technical domain expertise (e.g., distributed systems).\nProven experience shipping large-scale, distributed cloud-based software solutions.\n10+ years of experience working in agile, fast-paced environments, effectively navigating ambiguity and driving meaningful outcomes.\nStrong hands-on experience building full stack systems using technologies such as C#, Java, TypeScript, React, Next.js, and Node.js.\nPreferred Qualifications:\nExperience in full-stack development across the portal and all layers of the offering.\nMaster’s degree in Computer Science or a related technical discipline.\nExperience with nsjail, Firecracker, and Microsoft Orleans.\nFamiliarity with vector databases, semantic search, and prompt engineering.\nKnowledge of reinforcement learning, planning algorithms, or multi-agent systems.\nExceptional communication and stakeholder management skills, with the ability to influence and align cross-functional teams.\nExperience interviewing, hiring, and mentoring full-stack engineers, and helping establish strong team 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