Jobs in the United States

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Added 24 mins ago
CO
Deputy Director Engineering Resources
City of Santa Rosa
Santa Rosa, CA
- $83.43 to $102.44 USD / hour
This is an assistant department head level classification in the Santa Rosa Water Department that is responsible for managing and leading the Engineering Resources Division. The Engineering…
Added 25 mins ago
Systems Safety Engineer Lead - Level 3 or 4 (AHT)
Northrop Grumman
Chandler, AZ
Northrop Grumman’s Space Sector is seeking a Systems Safety Engineer Lead – Level 3 or Level 4 to join our team in Chandler, AZ .
Added 25 mins ago
Software Systems Quality Engineer onsite Tucson, AZ
RTX Corporation
tucson, AZ
We have an immediate need for an onsite Senior Software Systems Quality Engineer (Compliance) to support Land & Air Defense Systems (LADS).
Added 26 mins ago
Controls Engineer | I&C | Ovation DCS
Arizona Public Service
TONOPAH, AZ
Demonstrated ability to troubleshoot complex control system, instrumentation, and communication issues in an operating environment.
Added 31 mins ago
Mechanical Engineer II or III
Integrated Production Systems, Inc
ARLINGTON, TX
We are seeking a Mechanical Engineer (II or III level) who can independently lead complex mechanical engineering work supporting commercial and U.S. Department of War (DoW) programs. This…
Added 49 mins ago
A
Senior Modeling and Simulation Engineer
Astrion
Bedford / Hanscom AFB, MA
- $145,000 to $150,000 USD / year
Astrion has an exciting opportunity for a Senior Modeling and Simulation Engineer located at the Hanscom AFB in Bedford, MA. This role is in the C3I and Infrastructure Division (AFLCMC/HNI)…
Added 1 hour ago
O
Lead Principal Platform Software Engineer
Oracle
Nashville, TN
- $113,600 to $306,400 USD / year
We are seeking a Lead Principal Software Engineer to set long-term technical direction for the Robotics Automation Platform. You will lead architecture and technical delivery across…
Added 1 hour ago
Senior Site Reliability Engineer
Jobgether
Remote, United States
The Senior Site Reliability Engineer will play a key role in ensuring the reliability, availability, performance, and scalability of enterprise SaaS products. You will help build and…
Added 1 hour ago
Senior Juniper SRX Firewall Engineer
Jobgether
Remote, United States
Diagnose and resolve network connectivity and traffic-flow issues using command-line tools, session and flow analysis, system logs, and packet-level troubleshooting.
Added 1 hour ago
Transportation Supervising Engineer (Engineering)
State of Connecticut
Newington, CT
…accepting applications for an exciting Transportation Supervising Engineer (Engineering) opportunity in the Bureau of Engineering and Construction, Division of Facilities and Transit,…
Added 1 hour ago
SO
Transportation Planner 2 (40 Hour)
State of Connecticut
Newington, CT
- $91,979 to $132,381 USD / year
Develop maps, reports, presentations, and data analyses illustrating rail system performance, capacity constraints, and investment opportunities.
Added 1 hour ago
Transportation Engineer Trainee
State of Connecticut
Newington, CT
Maximum of the Target Level for Transportation Engineer 2.
Added 1 hour ago
TL
Vice President, Data Systems
The Los Angeles Lakers, Inc
El Segundo, CA
- $275,000 to $300,000 USD / year
…President will drive technology strategy, data governance, system reliability, and product innovation while ensuring solutions are secure, scalable, and aligned with organizational…
Added 1 hour ago
Journeyman MBSE Systems Engineer
Sabre Systems LLC
Patuxent River, MD
Sabre Systems is currently recruiting a Journeyman MBSE Systems Engineer for the Model-Based Systems Engineering Division to support the V-22 Joint Program Office (PMA-275) at Patuxent…
Added 1 hour ago
Senior MBSE Systems Engineer
Sabre Systems LLC
Patuxent River, MD
Sabre Systems is currently recruiting a Senior MBSE Systems Engineer for the Model-Based Systems Engineering Division to support the Heavy Lift Helicopter Program Office (PMA-261) at…
Added 1 hour ago
Senior MBSE Systems Engineer
Sabre Systems LLC
Patuxent River, MD
Sabre Systems is currently recruiting a Senior MBSE Systems Engineer for the Model-Based Systems Engineering Division to support the V-22 Joint Program Office (PMA-275) at Patuxent River…
Added 1 hour ago
Journeyman MBSE Systems Engineer
Sabre Systems LLC
Patuxent River, MD
Sabre Systems is currently recruiting a Journeyman MBSE Systems Engineer for the Model-Based Systems Engineering Division to support the V-22 Joint Program Office (PMA-275) at Patuxent…
Added 1 hour ago
Senior MBSE Systems Engineer
Sabre Systems LLC
Patuxent River, MD
Sabre Systems is currently recruiting a Senior MBSE Systems Engineer for the Model-Based Systems Engineering Division to support the PMA-228 at Patuxent River Naval Air Station in Lexington…
Added 1 hour ago
Quality Engineer / Principal Quality Engineer 2/3
Northrop Grumman
Elkridge, MD
Northrop Grumman Mission Systems (NGMS) is currently seeking a Quality Engineer / Principal Quality Engineer 2/3 to join our team in Elkridge, MD at our Troy Hill facility.
Added 1 hour ago
Logistics Engineer / Principal Logistics Engineer
Northrop Grumman
Linthicum Heights, MD
Northrop Grumman Mission Systems is looking for you to join our team as a Logistics Engineer or Principal Logistics Engineer based out of Baltimore, MD.
Added 1 hour ago
DevOps Engineer - $20K Sign On Bonus - 31011
Huntington Ingalls Industries
Fort Meade, MD
Seeking a highly motivated and experienced DevOps Engineer to join our fast-paced team. The ideal candidate will have strong working knowledge in Kubernetes and Container Orchestration,…
Added 1 hour ago
Sentinel - Principal / Sr Principal Systems Engineer - 19242*
Northrop Grumman
Roy, UT · Roy
Northrop Grumman Defense Systems is seeking a Principal Systems Engineer/Sr. Principal Systems Engineer. This opening is in Roy, UT and will support the Sentinel Program. Northrop Grumman…
Added 1 hour ago
DevOps Engineer - $20K Sign On Bonus - 31012
Huntington Ingalls Industries
Fort Meade, MD
Seeking a highly motivated and experienced DevOps Engineer to join our fast-paced team. The ideal candidate will have strong working knowledge in Kubernetes and Container Orchestration,…
Added 1 hour ago
DevOps Engineer (Hybrid) - 31007
Huntington Ingalls Industries
Columbia, MD
Seeking a highly motivated and experienced DevOps Engineer to join our fast-paced team. The ideal candidate will have strong working knowledge in Kubernetes and Container Orchestration,…
Added 1 hour ago
Staff Principal Systems Engineer 5
Northrop Grumman
Annapolis, MD
Northrop Grumman is seeking a Staff Principal Systems Engineer Level 5 to join our team of qualified, diverse individuals. The Marine Systems organization, part of Northrop Grumman Mission…

SpaceXSI

Sr. Software Engineer, Training/Inference (C++)

Palo Alto, CA, United States
Seattle, WA, United States

$220,000 - $357,000 USD

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Job details

Pay: $220,000 - $357,000 USD
Experience: 5+ years of experience with low-level system programming experience in C/C++ or Rust
Posting language: English
Posted: Nov 5, 2026

Original job 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.

SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including 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.

SR. SOFTWARE ENGINEER, TRAINING/INFERENCE (C++)

At SpaceXSI we are building the high-performance inference platform that serves Grok to millions of users every day. As a Software Engineer, Training/Inference (C++), you will design and optimize large-scale model serving systems end-to-end. You will own everything from distributed infrastructure – global KV cache, continuous batching, load balancing, auto-scaling – to deep low-level optimizations, including GPU kernels, quantization, speculative decoding, and tail latency. This is a high-impact role where your work directly determines how fast and reliably users interact with Grok at massive scale.

RESPONSIBILITIES:

Architect 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 systems with excellent tail latency and high reliability at the scale required to serve millions of users
Benchmark, fine-tune, and accelerate inference engines (including low-level GPU kernel work and code generation)
Develop custom tools to trace, replay, and fix issues across the full stack - from orchestration down to GPU kernels
Create robust CI/CD infrastructure for seamless endpoint deployment, image publishing, and inference engine updates
Accelerate research on scaling test-time compute, RL rollout, and model-hardware co-design for next-generation systems

BASIC QUALIFICATIONS:

Bachelor’s degree in computer science, computer engineering, or science discipline
5+ years of experience with low-level system programming experience in C/C++ or Rust

PREFERRED SKILLS AND EXPERIENCE:

Experience with large-scale, high-concurrent production serving
Experience with GPU inference engines (e.g., vLLM, SGLang, Triton, TensorRT-LLM)
Strong background in system optimizations: batching, caching, load balancing, parallelism
Low-level inference optimizations: GPU kernels, code generation
Algorithmic inference optimizations: quantization, speculative decoding, distillation, low-precision numerics
Experience with testing, benchmarking, and reliability of inference services
Experience designing and implementing CI/CD infrastructure for inference

COMPENSATION AND BENEFITS:

$220,000 - $357,000 USD

Base 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. SpaceXSI is an equal opportunity employer. For details on data processing, view our Recruitment Privacy Notice.

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