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Jobs at SpaceXSI
270 open roles read nightly from companies’ own hiring pages. Each one links to the original ad.
221–240 of 270 jobs
SpaceXSI · Southaven, Mississippi, United States +1
Full-timeMid levelTrades & logisticsOversee and coordinate electrical installations including underground duct banks, conduits, cable pulling, terminations, switchgear, transformers, generators, UPS systems, PDUs, and grounding for SpaceXSI data centers; Manage and schedule electrical contractors, subcontractors,…
Model Engineer, Post-Training & RL
6 months agoSpaceXSI · Palo Alto, California, United States
$180K – $400K a yearEngineeringDesign and run rigorous experiments that turn research ideas into measurable gains in model capability; Improve model recipes through data quality, deduplication, and mixture experiments; Define what makes RL data and rewards good, including grader design and preventing reward…
Sr. Backend Engineer, API
6 months agoSpaceXSI · London, England, United Kingdom
Senior£107K – £262K a yearEngineeringBuild and maintain the unified inference stack as the single surface area for all inference needs across the company; Own and evolve the platform services that power Chat API, Imagine API, Voice API, Grok Build, and Grok Bot; Design, build, and maintain Chat API features…
Sr. Model Engineer, Multimodal Understanding
6 months agoSpaceXSI · Palo Alto, California, United States
Senior$220K – $357K a yearEngineeringDesign, build, and optimize large-scale distributed systems for multimodal pre-training, post-training, inference, data processing, and tokenization at web/petabyte scale; Develop high-throughput pipelines for data acquisition, preprocessing, filtering, generation, decoding,…
Sr. Software Engineer, Consumer Subscriptions
6 months agoSpaceXSI · Palo Alto, California, United States
Senior$180K – $330K a yearEngineeringOwn the complete billing infrastructure for consumer subscriptions end-to-end, ensuring world-class reliability, security, and scalability; Design and build sophisticated promotional offer infrastructure and internal tools to supercharge the revenue organization; Develop…
Sr. Software Engineer, X Money
6 months agoSpaceXSI · London, England, United Kingdom
Senior£107K – £262K a yearEngineeringDevelop backend services, APIs, and data models to support high-volume, multi-user environments; Work with iOS, Android & Web client engineers to ship products; Design robust infrastructure and microservices for payments, transactions, growth, monetization, and engagement…
Sr. Software Engineer, X Money
6 months agoSpaceXSI · New York, United States +1
Senior$180K – $330K a yearEngineeringDevelop backend services, APIs, and data models to support high-volume, multi-user environments; Work with iOS, Android & Web client engineers to ship products; Design robust infrastructure and microservices for payments, transactions, growth, monetization, and engagement…
Sr. Analyst, Safety Operations (Child Safety)
7 months agoSpaceXSI · Austin, Texas, United States +1
SeniorOperationsMonitor and take action on content and behavior that goes against our terms of service, escalating as needed; Have deep expertise in online child safety, including the identification, investigation, and mitigation of a broad range of child safety threats and risks; Investigate…
Data Center Operations Technician
7 months agoSpaceXSI · Hillsboro, Oregon, United States
Mid levelData & AIPerforming troubleshooting and monitoring of the servers, diagnose and repair. Rack and stack of data center network equipment during build out; Maintaining our network infrastructure which includes network gear swaps, troubleshooting optics/fiber links and repairing them;…
Sr. Web Engineer (X)
7 months agoSpaceXSI · Palo Alto, California, United States
Senior$180K – $330K a yearEngineeringOwn and drive features from inception and design to implementation and launch, being the web expert on your team; Build and maintain high-quality, performant products and features, leveraging the most modern and cutting edge web standards, technologies, frameworks, and AI…
Software Engineer, Voice Product
7 months agoSpaceXSI · New York, United States +2
$140K – $225K a yearEngineeringOwn backend engineering for scalable, low-latency voice infrastructure and model integrations; Collaborate directly with Grok Voice model, media, and product teams to deliver end-to-end experiences; Drive performance, reliability, and quality of voice interactions at global…
Model Engineer, Voice
7 months agoSpaceXSI · Palo Alto, California, United States
$160K – $250K a yearEngineeringDesign, build, and maintain large-scale distributed data pipelines that ingest, process, and annotate real-world and synthetic audio, so the training and evaluation systems get reliable, high-quality data; Build and optimize the distributed training infrastructure and software…
Software Engineer, Kernels/CUDA (C++)
8 months agoSpaceXSI · Palo Alto, California, United States +1
$160K – $250K a yearEngineeringDesign, build, and optimize massive GPU clusters for extreme-scale training and inference workloads; Develop and tune low-level CUDA kernels (GeMM, Attention, etc.), using CUTLASS, Tensor Cores, and Nsight for maximum performance; Profile, debug, and eliminate bottlenecks…
Software Engineer, Imagine Product
8 months agoSpaceXSI · New York, United States +2
$140K – $225K a yearEngineeringDesign and implement scalable systems to support Grok's AI-driven media experiences, ensuring high performance, reliability, and low-latency at global scale; Architect robust infrastructure for real-time multi-modal interactions, including handling generation requests, media…
Model Engineer, Imagine
8 months agoSpaceXSI · Palo Alto, California, United States
$160K – $250K a yearEngineeringCreate and drive engineering agendas to advance multimodal capabilities, with emphasis on image and video generation, editing, understanding, controllable/long-horizon synthesis, agentic planning, RL training, and world simulation (including audio integration for richer video…
Software Engineer, Grok Product
8 months agoSpaceXSI · New York, United States +2
$140K – $225K a yearEngineeringDesign and build the systems that make Grok useful for everything from quick questions to useful work; Architect high-performance systems for personalized, reliable interactions at global scale; Build and optimize data pipelines using real-time user signals to drive product…
Sr. Operations Technician, Data Center - Memphis
8 months agoSpaceXSI · Southaven, Mississippi, United States +1
SeniorData & AIReport to the job site during initial construction and report back to the engineering team as required; Perform troubleshooting and monitoring of the servers and network in our data centers and global points of presence; Rack and stack of data center network equipment; Maintain…
AI Tutor, Video - Temporary
8 months agoSpaceXSI · International, United States
RemoteTemporaryEntry levelFrom $40.00 an hourEducationUse proprietary software to provide labels, annotations, and inputs on projects involving video and multimedia elements; Critically analyze and clearly articulate what makes a video sequence work or fail at a technical level; Deliver high-quality curated data that captures the…
SpaceXSI · Palo Alto, California, United States
Senior$180K – $330K a yearITDesign, validate, and productize high-speed copper and optical connectivity solutions for AI clusters (100k+ GPU scale); Own vendor due diligence and onboarding for new 1.6T products including AEC and pluggable optical transceivers (DR4/8, FR4) including rigorous bring-up &…
SpaceXSI · New York, United States +2
Mid level$100K – $198K a yearSecurityExecute security compliance implementation and audits across core frameworks including SOC 2, NIST CSF, NIST SP 800-53, ISO 27001, ISO 42001, and the EU AI Act, including control design, mapping, gap assessment, evidence collection, and remediation tracking; Build and maintain…
Updated 06 Nov 2026 09:37 UTC from the OptiTalent job library.