OptiTalent · Job Finder
Jobs in United States
259 open roles read nightly from companies’ own hiring pages. Each one links to the original ad.
1–20 of 259 jobs
Sr. Mobile iOS Engineer
YesterdaySpaceXSI · New York, United States +1
Senior$180K – $330K 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;…
Sr. Mobile Android Engineer
YesterdaySpaceXSI · New York, United States +1
Senior$180K – $330K 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;…
SpaceXSI · Palo Alto, California, United States
$160K – $250K 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,…
SpaceXSI · Palo Alto, California, United States
Senior$180K – $330K a yearData & AIDesign, build, and operate production-grade realtime and batch pipelines that ingest, process, validate, and deliver data powering user-behavior insights and product decisions; Create shared datasets, fact tables, and internal data products that let other teams analyze, debug,…
Sr. Software Engineer, Ads Product
YesterdaySpaceXSI · Palo Alto, California, United States
Senior$180K – $330K a yearEngineeringBuild and ship product features across the X Ads Platform; Work on systems related to ad delivery, targeting, optimization, measurement, and advertiser experience; Use SpaceXSI's infrastructure and AI capabilities to improve the performance and quality of advertising products;…
Analytics Engineer (X)
YesterdaySpaceXSI · Palo Alto, California, United States
Mid level$140K – $225K a yearData & AIDesign, implement, and optimize end-to-end data pipelines for processing high-volume datasets using tools such as Spark, Kafka, and/or Flink; Develop quantitative models and statistical frameworks to support experimentation, forecasting, and performance measurement; Build and…
SpaceXSI · Palo Alto, California, United States
Senior$220K – $357K a yearEngineeringArchitect and implement scalable distributed infrastructure for model serving (load balancing, auto-scaling, batch scheduling, global KV cache); Optimize latency and throughput of model inference under real production workloads; Build and operate high-concurrency serving…
SpaceXSI · Palo Alto, California, United States
Senior$220K – $357K 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…
Sr. Software Engineer, Linux Kernel
YesterdaySpaceXSI · Seattle, Washington, United States
Senior$180K – $330K a yearEngineeringBuild and maintain the lean, high-reliability Linux-based operating system that underpins our supercomputer network fabric; Write (or rewrite) high-performance device drivers to extract the maximum physical capability from our network and compute hardware; Manage deployment,…
SpaceXSI · Palo Alto, California, United States
Senior$180K – $400K a yearEngineeringDesign and implement the systems backing all RL workloads at SpaceXSI, from small scale ablations to production training runs; Profile, debug, and optimize end-to-end training performance; Improve scalability and observability of the RL stack
Talent Sourcer
2 days agoSpaceXSI · Southaven, Mississippi, United States +1
Entry levelPeople & HRRun intake with recruiters and hiring managers and turn each role into a searchable profile; Source passive candidates through LinkedIn Recruiter, GitHub, X, niche technical communities, events, and target-company mapping, using Boolean and X-ray searches; Use AI research tools…
SpaceXSI · Southaven, Mississippi, United States +1
Full-timeManagerEngineeringAct as the senior construction representative for the Memphis data center fiber scope, managing relationships with contractors, partners, and internal stakeholders; Oversee fiber execution from pre-construction and site development through testing, certification, and handover;…
SpaceXSI · Southaven, Mississippi, United States +1
Full-timeManagerEngineeringAct as the senior construction representative for the Memphis data center electrical scope, managing relationships with contractors, partners, and internal stakeholders; Oversee electrical execution from pre-construction and site development through commissioning and controls;…
SpaceXSI · Southaven, Mississippi, United States +1
Full-timeManagerEngineeringAct as the senior construction representative for the Memphis data center fluid/mechanical scope, managing relationships with contractors, partners, and internal stakeholders; Oversee fluid/mechanical execution from pre-construction and site development through commissioning;…
SpaceXSI · Southaven, Mississippi, United States +1
Full-timeManagerEngineeringAct as the senior construction representative for the Memphis data center structural scope, managing relationships with contractors, partners, and internal stakeholders; Oversee structural execution from pre-construction and site development through commissioning; Coordinate…
Associate Asset Manager - Memphis
3 days agoSpaceXSI · Southaven, Mississippi, United States +1
Full-timeEntry levelData & AILearn our equipment, sites, and maintenance program through on-the-job training alongside the Asset Manager, technicians, and vendors; Create and maintain asset records in our asset management / CMMS system, including asset hierarchy, locations, tagging, nameplate data, serial…
Sr. Model Engineer, Post-Training & RL
4 days agoSpaceXSI · Palo Alto, California, United States
Senior$180K – $600K 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. Model Engineer, Mid-Training
4 days agoSpaceXSI · Palo Alto, California, United States
Senior$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…
SpaceXSI · Southaven, Mississippi, United States +1
Full-timeMid levelTrades & logisticsOwn I&C trip response: trace the first-out and historian trends to the failed device, fix it, walk the unit down, and disposition every alarm before restart; Troubleshoot three turbine control platforms online in Studio 5000 (ControlLogix and GuardLogix, FLEX and FLEX 5000…
SpaceXSI · Southaven, Mississippi, United States +1
Full-timeMid levelEngineeringProvide operation and maintenance engineering support for the multi-manufacturer gas turbine fleet, generators, balance-of-plant, process and fluid systems, and plant electrical systems, including protection, e-houses, blackstart, and switching.; Be proficient across all…
Updated 07 Nov 2026 10:21 UTC from the OptiTalent job library.