Jobs in the United States

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Added 9 mins ago
Sr. Electrical Engineer
Hargrove and Associates, Inc
Greenville, SC
Advising the senior engineer concerning design or scope changes, which have been identified.
Added 52 mins ago
Staff / Sr Principal Electrical Engineer
Northrop Grumman
Huntsville, AL
Senior Principal Electrical Engineer or Staff Principal Electrical Engineer position in the Huntsville Hardware Engineering functional department. This position will support one or more…
Added 52 mins ago
Sr Mechanical Engineer
Leidos
Huntsville, AL
Leidos Defense Systems is seeking a highly motivated Sr Mechanical Engineer who loves collaboration and being a part of something big, to join our team. This role drives the implementation…
Added 1 hour ago
Sr Prin Security Engineer
Consumers Energy
JACKSON, MI
The Senior Principal Security Engineer will support the organization’s most critical security initiatives, serving as both a technical expert and strategic leader. This role is responsible…
Added 3 hours ago
A
Software Engineer – Distributed Systems
Alluxio
Foster City, CA
- $230,000 to $330,000 USD / year
As a Sr. Staff Software Engineer – Distributed Systems at Alluxio, you will lead the end-to-end architecture and technical evolution of our next-generation distributed data platform. You…
Added 4 hours ago
O
Senior Network Developer
Oracle
Seattle, WA · Nashville, TN · Redwood City, CA · Santa Clara, CA · Reston, VA
- $91,400 to $187,000 USD / year
As a Sr Network Development Engineer, you will be responsible for helping design, build, test, deploy and operate highly scalable solutions to support Oracle’s next-generation Cloud…
Added 4 hours ago
Sr. Engineer, Software Engineer (Test Automation Developer)
AB3 Nationwide Life and Annuity Insurance Co
OH · AZ · IA
As a Senior Software Engineer, you will focus primarily on providing high-quality, efficient technology solutions to business partners by crafting new software applications or modifying…
Added 5 hours ago
Sr. Principal Electrical Engineer IV
Northrop Grumman
Chandler, AZ
Northrop Grumman Space Systems is currently seeking a Lead Sr. Principal Electrical Engineer (Strike) in our Chandler AZ facility.
Added 5 hours ago
Sr Forward Deployed Engineer (FDE), AWS Forward Deployed Engineering, US Government
Amazon Web Services, Inc.
Jessup, MD · Arlington, VA · Seattle, WA · New York, NY · Denver, CO · Herndon, VA
A Forward Deployed Engineer (FDE) embeds directly inside a strategic enterprise customer to design, build, deploy, and run AI-powered production systems alongside the customer's engineering…
Added 5 hours ago
Sr Forward Deployed Engineer (FDE), AWS Forward Deployed Engineering, US Government
Amazon Web Services, Inc.
Jessup, MD · Arlington, VA · Seattle, WA · New York, NY · Denver, CO · Herndon, VA
A Forward Deployed Engineer (FDE) embeds directly inside a strategic enterprise customer to design, build, deploy, and run AI-powered production systems alongside the customer's engineering…
Added 5 hours ago
MB
Sr. ML Engineer
Memory Bridge
Remote, United States
- IRR 800,000,000 to IRR 1,200,000,000 IRR / year
This is a rare opportunity to join our team as the founding ML engineer, where your code will directly shape how AI systems remember and learn. If you’re a strong programmer who has evolved…
Added 5 hours ago
Sr. Applied ML Engineer
Memory Bridge
Remote, United States
This is a rare opportunity to join our team as the founding ML engineer, where your code will directly shape how AI systems remember and learn. If you’re a strong programmer who has evolved…
Added 6 hours ago
Software engineer(automation)
US Tech Solutions
Schaumburg, IL
· Senior level software development engineer to translate business and functional requirements into runbook application solutions. The candidate will be able to convert functional…
Added 6 hours ago
Sr. Cloud Architect
Veredus - DC
Vienna, VA
…platforms must be architected to meet 100% uptime SLAs. New systems must be built with local and geographic redundancy. Responsibilities • Visionary in the pursuit of cost effective, high…
Added 6 hours ago
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Sr. Network Engineer
Veredus - DC
Washington, DC
- $48 to $55 USD / hour
…infrastructure including firewalls, load balancers, and reverse-proxy systems Maintain and enhance the network security policies ncluding monitoring of perimeter security ensuring…
Added 6 hours ago
Sr. .NET Software Engineer
Transactive
Philadelphia, PA
Our Client is the authority in custom software development and innovation, specializing in cutting-edge technology, Web 3.0, Blockchain, Digital Assets, Voice, Intelligent Cloud services,…
Added 6 hours ago
Manufacturing Sr Engineer - Medical device MFg
TekWissen llc
Warsaw, IN
TekWissen provides a unique portfolio of innovative capabilities that seamlessly combines clients insights, strategy, design, software engineering, and systems integration.
Added 6 hours ago
IBM WebSphere eCommerce Engineer
Tech Tammina
Cincinnati, OH
…delivery of technology solutions for our clients Ecommerce. The engineer will collaborate with team members from all disciplines to produce feasibility assessments, engineering estimates,…
Added 6 hours ago
SAN Engineer
Tech Tammina
Mechanicsburg, PA
This engineer will be a system administrator for our Storage Area Network (SAN) platforms and will routinely work with vendors, project managers, system administrators, database…
Added 6 hours ago
DevOps Engineer
SRI Tech solutions Inc
Sunnyvale, CA
Expert knowledge and experience with Software Version Control systems: SVN, GIT, etc. (Git and GitHub/Gitlab knowledge is a plus)
Added 6 hours ago
Sr. Software Engineer- Ad-Tech
tbd040918IAC
Oakland, CA
As a Sr. Software Engineer - AdTech, you will be working closely with our front-end engineering and revenue teams. You will also work closely with product management and various business…
Added 6 hours ago
Sr. Java Software Engineer - Manager
SofTec Solutions
Waltham, MA
The Lead Software Engineer is viewed as an expert in systems software engineering. They undertake complex projects requiring additional specialized technical knowledge. They make…
Added 6 hours ago
Senior Mobile Quality Assurance Engineer
SofTec Solutions
Denver, CO
As a Sr. QA Engineer, you will play a key role in establishing testing best practices, evaluating functional and load testing tools and helping to standardize the mobile direction within…
Added 6 hours ago
Sr Advanced Software Engineer-24667
OLSA Resources, Inc.
AZ-Glendale, AZ
Designs, modifies, develops, writes and implements software programming applications. Supports and/or installs software applications/operating systems. Participates in the testing process…
Added 6 hours ago
Sr. Systems Engineer
Right Talent Right Now
Edison, NJ
1. At least 5 years of experience in writing complex Linux shell scripts and installing software in Linux environments.

SpaceXSI

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

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

$200,000 - $375,000 USD

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Job details

Pay: $200,000 - $375,000 USD
Experience: 5+ years of experience with low-level system programming experience in C/C++ or Rust
Posting language: English
Posted: Nov 4, 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:

$200,000 - $375,000 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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More about this job

Skills

C++
Scheduling
CI/CD
Research
Model hardware
BASIC
Computer science
Computer engineering
C
Rust

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