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Engineering jobs in United States
88 open roles read nightly from companies’ own hiring pages. Each one links to the original ad.
1–20 of 88 jobs
Counts are paused for a minute after many searches; results are still current.
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,…
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;…
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
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…
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 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…
Sr. Mechanical Engineer - Memphis
9 days agoSpaceXSI · Southaven, Mississippi, United States +1
SeniorEngineeringResponsible for owning and being the subject matter expert on fluid/HVAC components across data center builds– chillers, pumps, dry coolers, chemical treatment, water storage, building pressurization, comfort heating/ cooling, heat exchangers, pumps, valves and systems; Perform…
Senior Product Manager, Commerce Platform
10 days agoSpaceXSI · Palo Alto, California, United States
Senior$180K – $275K a yearEngineeringOwn the product roadmap for the commerce platform billing system across Grok, X, Grok Bot, and Cursor; Define requirements and drive delivery for purchase flows, including checkout, paywalls, upsell, and promotional offers; Lead triage of billing issues at scale. Set…
Operations Engineer, Supercompute - Memphis
2 weeks agoSpaceXSI · Southaven, Mississippi, United States +1
Mid levelEngineeringOwn monitoring architecture, alerting, signal quality, and automation of monitoring across GPU and host telemetry (DCGM, Prometheus/Grafana) and facility telemetry (BMS, EPMS, DCIM, SCADA, CDU / direct liquid cooling); Own compute hardware change incorporation - physical,…
SpaceXSI · Memphis, Tennessee, United States
EngineeringDesign, build, and operate multi-service production systems (UI, APIs, data pipelines, auth, and on-call) to enable reliability, uptime monitoring, predictive alerting, upgrade/change/risk management, and site-wide impact assessments; Design, build, and operate predictive and…
SpaceXSI · Southaven, Mississippi, United States +1
ManagerEngineeringServe as the senior operational authority for the SRE organization and represent production reliability concerns in engineering and leadership discussions; Lead integrated Supercompute systems engineering reliability team responsible for reactive and increasingly proactive…
Updated 07 Nov 2026 10:21 UTC from the OptiTalent job library.