OptiTalent · Job Finder
Jobs in United States
259 open roles read nightly from companies’ own hiring pages. Each one links to the original ad.
221–240 of 259 jobs
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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…
AI Tutor, Writing - Temporary
10 months agoSpaceXSI · International, United States
RemoteTemporarySeniorFrom $35.00 an hourEducationUse proprietary software to label, annotate, and refine AI-generated text for clarity, structure, engagement, and domain-specific accuracy; Apply your writing specialty (e.g., creative fiction, game writing, technical writing) to deliver high-quality curated data that improves…
Structural Engineer, Data Center - Memphis
10 months agoSpaceXSI · Memphis, Tennessee, United States
Full-timeData & AILead structural design and analysis for large-scale data center and compute facilities, from conceptual design through construction administration; Develop and review structural models, calculations, drawings, and specifications using tools like Tekla Structures, ETABS, RISA,…
Sr. Machine Learning Engineer, Ads
11 months agoSpaceXSI · Palo Alto, California, United States
Senior$180K – $330K a yearData & AILeverage the latest Grok models to power all stages of our advertising stack, from candidate selection to ranking, auction, campaign optimization, creative generation, and advertiser experience; Own and operate systems and products, driving the majority of revenue
Mobile iOS Engineer
11 months agoSpaceXSI · New York, United States +1
$140K – $225K a yearEngineeringCraft delightful, intuitive user experiences that redefine how people interact with the app; Obsess over every pixel, animation, and interaction, ensuring the experience feels magical and seamless; Build blazing-fast, highly performant systems where every millisecond counts;…
Facilities Maintenance Assistant - Memphis
12 months agoSpaceXSI · Memphis, Tennessee, United States
Entry levelOperationsAssist in performing non-critical maintenance and repair work, including people door repairs, administrative area upkeep, building envelope maintenance, and/or landscaping; Under direct supervision of an operator, assist as required in the operation of critical equipment;…
Model Engineer, Mid-Training
12 months agoSpaceXSI · Palo Alto, California, United States
$180K – $440K a yearEngineeringScale synthetic coding data to trillions of tokens with large-scale docker verification; Distill the intelligence of flagship models into flash models through synthetic data generation; Optimize mid-training data mixtures to boost the ceiling for RL; Engineer long-context data…
Dispute Analyst, X Money
12 months agoSpaceXSI · Bastrop, Texas, United States
Mid levelInvestigate incoming customer disputes across P2P, debit/credit card, and ACH transactions, ensuring compliance with internal policies and regulatory standards; Validate chargeback rights and ensure required documentation is complete before initiating a dispute with networks or…
Client Account Manager
12 months agoSpaceXSI · Austin, Texas, United States +2
Mid level$65K – $145K a yearSalesCollaborate with Fortune 500 advertisers to understand their objectives, recommend best practices, and develop effective, high-impact advertising campaigns; Educate and consult clients on how to leverage X’s advertising products, sharing best practices to create and execute…
Support Agent, X Money
12 months agoSpaceXSI · Austin, Texas, United States +1
Mid levelCustomer success & supportServe as the first point of contact, embodying X Payments’s commitment to trust and excellence in every customer interaction; Respond to customer inquiries via phone, chat, and email with clarity, empathy, and precision, addressing issues related to login access, card usage,…
Sr. Software Engineer, Network Software & Services
12 months agoSpaceXSI · Palo Alto, California, United States
Senior$180K – $330K a yearEngineeringBuilding software and tools with extensive metrics coverage for some of the world’s largest GPU supercomputing network fabrics used for AI training and serving customer inference queries; Implement IaC best practices, enhancing deployment pipelines, and ensuring robust, secure…
Updated 07 Nov 2026 10:21 UTC from the OptiTalent job library.