{"id":29242,"url":"https://alion.io/job/xai-software-engineer-real-time-storage","title":"Software Engineer - Real-Time Storage","company":{"id":28,"name":"xAI","domain":"x.ai","url":"https://alion.io/company/xai","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"A","score":88,"open_postings":100,"ghost_share":0,"stale_share":0.47,"repost_share":0,"time_to_fill_p50_days":59,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Palo Alto, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":440000,"max":null,"currency":"USD","period":"year","gross":null,"usd_annual":440000},"salary_estimate":null,"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Amazon S3","optional":false},{"name":"C++","optional":false},{"name":"Recommender Systems","optional":false},{"name":"Rust","optional":false}],"status":"live","first_seen_at":"2025-07-30T19:59:32Z","employer_posted_date":"2026-10-12","last_verified_at":"2026-10-17T19:59:51Z","board_verified":true,"closed_at":null,"days_open":444,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":443},"description":"SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. \nSpaceXSI is building Super Intelligence to understand the universe and help expand humanity’s knowledge and capabilities. We work across the full Super Intelligence stack: compute (Colossus supercomputers), models (Grok), and applications (Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X). We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next.\nABOUT THE ROLE:\nWe’re looking for exceptional storage & database engineers who want to join us on a new project to deeply integrate SpaceXSI's advanced AI infrastructure into a platform used by around 600 million users every month. We’re building a new storage tier that powers training, inference, recommendations, and real-time data extraction. \nWe build and operate:\nAn exabyte-scale S3-compatible object store\nA multi-tenant transactional key/value store that serves 100s of millions requests per second\nA caching tier that serves billions of requests per second\nA scalable vector database that powers our recommendation systems\nA few other specialized databases serving hundreds of millions requests per second \nRESPONSIBILITIES:\nDesign, build, and launch to production new features and improvements aimed at unifying common components across the storage systems\nDive into performance issues and work with customers and deliver solutions to cater to customers’ latency, availability and data durability requirements.\nLead and drive incident responses and recovery with your peers. Review and contribute to incident postmortems and hold a high bar for the same.\nWork in a collaborative environment and uplevel your peers by doing mentoring, code and design reviews.\nBe open to develop new skills and learn on the job as we navigate new technology spaces.\nGround your decisions with data and reasoning and adapt to new information to make informed choices.\nBASIC QUALIFICATIONS:\nHave at least 7 years of experience in software development, plus 2+ years building storage systems or databases.\nObsessed with reliability, performance, and quality\nProficient in high performance C++, Rust, or JVM-based languages\nExpertise in building, running, and operating scalable and resilient distributed systems\nCOMPENSATION AND BENEFITS:\n$180,000 - $440,000 USD\nBase salary is just one part of our total rewards package at SpaceXSI, which also includes equity, comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short & long-term disability insurance, life insurance, and various other discounts and perks.\nSpaceXSI is an equal opportunity employer. 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