{"id":128345,"url":"https://alion.io/job/unstructured-principal-staff-software-engineers","title":"Principal + Staff Software Engineers","company":{"id":48255,"name":"Unstructured","domain":"unstructured.io","url":"https://alion.io/company/unstructured","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":75,"open_postings":4,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"inferred_payroll_markers","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Databricks","optional":false},{"name":"Embeddings","optional":false},{"name":"Kubernetes","optional":false},{"name":"LLM","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"Unstructured.io","optional":false},{"name":"RAG","optional":true}],"status":"live","first_seen_at":"2026-04-30T05:01:42Z","employer_posted_date":"2026-04-30","last_verified_at":"2026-10-17T17:43:25Z","board_verified":true,"closed_at":null,"days_open":170,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":170},"description":"Unstructured is defining the standard for enterprise data transformation in the age of LLMs and generative AI. In just two years, we've raised over $65M from world-class investors, including Menlo Ventures, Bain Capital, Databricks, NVIDIA, Microsoft, and IBM.\nOur open-source toolkit has been downloaded 97M+ times and is used by 90% of the Fortune 1000. We power production AI workflows across commercial and federal sectors - transforming PDFs, HTML, Word docs, images, emails, and more into AI-ready data pipelines that scale.\nWe're not just building tools; we're building the backbone of generative AI and the infrastructure that unlocks intelligence across industries.\nAbout the Role\nUnstructured is looking for Staff and Principal Software Engineers to define the architectural foundation for how enterprises process and transform unstructured data for large-language-model (LLM) applications.\nThis is a high-impact, hands-on role for someone who thrives in deep systems work-someone who could write the book on Kubernetes, lives and breathes Python, and understands Postgres at the index and transaction-log level. You’ll own the technical direction for our core platform, guiding how data moves through every layer-from ingestion to transformation to retrieval.\nYou’ll partner closely with the Head of Engineering, Head of Infrastructure, and product leaders to ensure Unstructured’s systems are performant, resilient, and ready to support the next generation of AI-driven workloads.\nLocation(s) Preferred: San Francisco, Bay Area, San Jose, Seattle, Sacramento\nWhat You’ll Own & Drive\nDefine and evolve the end-to-end architecture for Unstructured’s data transformation and retrieval platform.\n\nBuild and scale distributed systems that process massive volumes of unstructured data across diverse formats and sources.\n\nServe as the company-wide authority on Kubernetes orchestration, cluster design, performance tuning, and reliability.\n\nLead Python architecture and best practices-ensuring performance, modularity, and maintainability across services.\n\nDesign and optimize Postgres schemas, queries, and indexing strategies to support large-scale metadata and retrieval pipelines.\n\nMentor senior engineers through design reviews and code guidance, raising the bar for technical excellence across the org.\n\nPartner with the infrastructure and product teams to translate research prototypes into production-grade systems.\n\nEvaluate emerging technologies and open-source tools in LLM infrastructure, retrieval, and orchestration-deciding where and how to integrate them.\n\nWhat We're Looking for\nHave 10+ years of software engineering experience with a focus on distributed systems, infrastructure, or data architecture.\n\nAre a Python expert-capable of building frameworks and performance-critical services from scratch.\n\nHave deep Kubernetes expertise; you can design, deploy, and debug at scale and could teach others how to productionize it securely.\n\nAre fluent in Postgres-you understand query planning, partitioning, and tuning for high-throughput environments.\n\nAre obsessed with clean, scalable architecture and can lead design reviews that shape how entire systems evolve.\n\nHave experience in high-performance data or AI/ML systems-especially those involving retrieval pipelines, embeddings, or hybrid workloads.\n\nThrive in fast-moving, ambiguous environments where technical depth and judgment matter more than process.\n\nBonus Points\nExperience building or scaling LLM-powered or RAG systems in production.\n\nFamiliarity with open-source orchestration frameworks, vector databases, or hybrid cloud infrastructure.\n\nContributions to open-source projects in Python, Kubernetes, or distributed systems.\n\nWhy You'll Love It Here\nYou'll be surrounded by smart, kind, low-ego people who genuinely enjoy building together. We invest in our team with company offsites, best-in-tech swag, and the tools you need to do your best work, wherever you're based.\nWe support you holistically, not just at work. From medical, dental, and vision coverage effective the 1st of the month following your start date, life and disability insurance, unlimited PTO, and flexible parental leave, to a 401(k) with company match, equity, a $500 work from home stipend, $70/month internet reimbursement, and team/company offsites throughout the year - we want you focused on building, growing, and staying energized for the long haul.\nIf you're excited about what we're building, we'd love to meet you.\nUnstructured is proud to be an Equal Opportunity Employer. We're committed to building a diverse team and an inclusive culture where everyone can do their best work. We do not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity or expression, national origin, age, disability, veteran status, or any other characteristic protected by applicable law.","description_format":"text","description_chars":4879,"description_truncated":false,"requirements":{"experience_years_min":10,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Internet reimbursement","Parental leave","Unlimited PTO"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Document AI","Data Engineering & Migration Services"],"lifecycle":[{"event":"open","at":"2026-04-30T05:01:42Z"}],"visa":[],"liveness":{"score":9,"band":"cold","label":"Long shot","p_open":1,"p_active":0.309,"p_room":0.28,"age_days":170,"expected_fill_days":7,"reasons":["conf:1","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/unstructured-principal-staff-software-engineers","json_url":"https://alion.io/job/unstructured-principal-staff-software-engineers.json","meta":{"generated_at":"2026-10-17T17:52:20Z","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":421,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"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":48255},"rest":"https://alion.io/mcp/rest/get_company?id=48255"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Funstructured-principal-staff-software-engineers"},{"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%2Funstructured-principal-staff-software-engineers"},{"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%2Funstructured-principal-staff-software-engineers"},{"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/unstructured-principal-staff-software-engineers\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Funstructured-principal-staff-software-engineers"}]}