Jobs in the United States

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Added 2 mins ago
IP
Information Security Engineer - Principal
Independence Pet Services, Inc
Chicago, IL · IL · IA · FL · WI · MI · LA
- $170,871 to $234,873 USD / year
…remediation, produce clear documentation and evidence, and provide quality review and escalation support for repeatable work performed by offshore or managed-service…
Added 6 mins ago
Research Engineer/Research Scientist in World Models and Simulation
Deeproute.ai
Fremont, CA
We are seeking a hands-on [Research Engineer/Research Scientist] with expertise in world modeling, video generation, predictive modeling, or learned simulation. You will develop models that…
Added 7 mins ago
Security & Testing Engineering
Deloitte US
New Orleans, LA
As a Project Lead Security Engineer II on the team, you will be responsible for…
Added 9 mins ago
Quality Engineer - Millennium Space Systems
Millennium Space Systems
El Segundo, CA
The Quality Engineer (Build Reliability Engineer) will be responsible for identifying, resolving, and eliminating spacecraft and product manufacturing quality issues. You will be a key…
Added 9 mins ago
Mission Assurance Engineer, OPS - Millennium Space Systems
Millennium Space Systems
Colorado Springs, CO
As an Operations Systems Engineer supporting the Mission Assurance team, you will serve as the independent interface between our internal operations team and program customers. This role is…
Added 11 mins ago
Regional Environmental Engineer, AWS Environmental Team
Amazon Data Services, Inc.
Herndon, VA
You’ll join a diverse team of software, hardware, and network engineers, supply chain specialists, security experts, operations managers, and other vital roles. You’ll collaborate with…
Added 12 mins ago
Robotics Software Engineer, Embedded Systems
Shift Robotics
Austin, TX
…engineers who thrive in fast-paced environments where hardware, software, and human motion intersect. As a Robotics Software Engineer for our Embedded Systems team, you will play a critical…
Added 14 mins ago
Senior Network Engineer
Akima, LLC
Hurlburt Field, FL
Must have a working knowledge of cybersecurity enforcement, vulnerability remediation, and Authority to Operate control implementation
Added 16 mins ago
Senior Staff Software Engineer
Nubank
Palo Alto, CA · Virginia, VA · Miami, FL
This is a hybrid role, requiring attendance in the office 3 days per week
Added 16 mins ago
Design Engineer
Stellant Systems
Melville, NY
Utilize CAD software (such as AutoCAD, Inventor, SolidWorks) to produce accurate and precise drawings.
Added 17 mins ago
Lead Engineer, IT Services
sephora.com
United States
Ready for a career glow up? As a Lead Engineer, IT Services Engineering, you'll independently turn complex and ambiguous problems into secure, scalable, reliable, and supportable production…
Added 21 mins ago
Test Engineer (Journeyman)
CACI, INC.-FEDERAL
Ashburn, VA
Bachelor's degree + 4 years of experience in related fields, such as test engineering, quality assurance, software testing, infrastructure testing, or DevOps; equivalencies considered.
Added 27 mins ago
TT
Software Engineer
True Talent Solutions Partners
New York, NY
- $192,500 to $258,000 USD / year
Join an early-stage AI software engineering team building products that help in-person sales teams improve through conversation insights. You will ship full-stack features from idea to…
Added 28 mins ago
EA
Sr. Thermal Engineer
Eridu AI
Saratoga, CA
- $210,000 to $270,000 USD / year
As a Senior Thermal Engineer, you will own your thermal hardware end to end: design, development, test, release and delivery. Ownership is the core of this role. You drive your parts to…
Added 28 mins ago
Field Service Engineer 2
Lam Research
Phoenix
‘Virtual Flex’ you’ll work 1-2 days per week on-site at a Lam or customer/supplier location, and remotely the rest of the time
Added 28 mins ago
G
Integrations Engineer
Granted
Remote, United States
- $150,000 to $225,000 USD / year
…backend systems and integrations. You'll leverage AI-native software paradigms and cutting-edge development tools to build a world-class application. You'll work closely with Product,…
Added 33 mins ago
Database Engineer
TTN Fleet Solutions
Farmers Branch, TX
The Database Engineer has deep expertise in MySQL to design, build, and maintain our core data infrastructure. This role is responsible for developing robust ETL/ELT pipelines, optimizing…
Added 39 mins ago
Principal / Sr. Principal Engineer Reliability
Northrop Grumman
Elkton
Northrop Grumman Weapons Systems is currently seeking Principal Reliability Engineer 3 or Sr. Principal Reliability Engineer 4 for our Elkton, Maryland location.
Added 39 mins ago
Principal / Sr. Principal Systems Engineer
Northrop Grumman
Bellevue
Northrop Grumman Defense Systems (NGDS) is looking for a Principal Systems Engineer / Sr. Principal Systems Engineer based in Bellevue, NE. Our Team supports, integrates, develops, and…
Added 39 mins ago
Senior Software Engineer (Pega)
DriveTime Sales and Finance Company, LLC
1720 W Rio Salado Pkwy Tempe, AZ
In short, as our Senior Software Engineer, you will play a key role in designing, developing, and optimizing enterprise-grade Pega solutions that support critical business operations.…
Added 39 mins ago
Staff Engineer Mission Assurance - 20633
Northrop Grumman
Roy
Northrop Grumman Defense Systems is seeking to hire a Staff Mission Assurance Engineer to join the Strategic Deterrent Systems (SDS) division. This position is located in Roy, UT.
Added 39 mins ago
Senior Principal Technical Operations Project Manager
Northrop Grumman
Redondo Beach
…achieve mission success. Join the team and help shape how we engineer, integrate, and operate the systems of…
Added 41 mins ago
CC
Data Engineer
Clear Capital | CubiCasa | restb.ai
Reno, NV
- $120,000 to $153,700 USD / year
As a Data Engineer, you will design, build, and operate the data pipelines and platforms behind our data & analytics products. You will work closely with the entire engineering organization…
Added 42 mins ago
FC
Senior Embedded Computer Vision Engineer
Fresh Consulting
Remote, United States
- $155,000 to $180,000 USD / year
Fresh Consulting is a design-led, software development and hardware engineering company, offering end-to-end digital services to help companies innovate. We bring together amazing UX…
Added 44 mins ago
JH
Data Engineer I (Epidemiology)
Johns Hopkins University
Baltimore
- $87,635 to $153,545 USD / year
We are seeking a Data Engineer I who will assist with the creation and maintenance of complex data pipelines from raw acquisition of data to visualization. The Data Engineer I will support…

SpaceXAI

Software Engineer, Model Lifecycle and Signals

New York, NY, United States
San Francisco, CA, United States

$140,000 - $225,000 USD

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Job details

Pay: $140,000 - $225,000 USD
Experience: OR 2+ years of professional experience building software in lieu of a degree
Posting language: English
Posted: Nov 9, 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.

SOFTWARE ENGINEER, MODEL LIFECYCLE AND SIGNALS

As a Software Engineer on the Model Lifecycle and Signals team at SpaceXSI, you'll own the bridge between frontier models and every user-facing Cursor product, used at a scale few teams ever see. You'll decide when we use which model, spot where models go off track and build the guardrails to keep them on it, and shape what the next generation of models should learn. This role sits at the intersection of infrastructure, data, and product: you'll bring models from preview to production, dig into real-world data to find out what's actually working, and partner with research, inference, product, and data science teams to turn that evidence into better products and better models. Every improvement you make compounds across our products and every model we ship.

RESPONSIBILITIES:

Get new frontier models into users' hands the day they're ready, and retire old ones without anyone noticing
Evaluate internal and external preview models before launch and give meaningful feedback to the teams building them
Build Cursor Router (https://cursor.com/docs/cursor-router): decide which model handles each request, balancing quality, speed, and cost at massive scale
Build the eyes and ears of the product, and the experimentation platform that puts them to work: signals that show where each model shines, where it goes off track, and what "better" actually means

BASIC QUALIFICATIONS:

Bachelor's degree in computer science, engineering, math, or scientific discipline; OR 2+ years of professional experience building software in lieu of a degree

PREFERRED SKILLS AND EXPERIENCE:

Track record of shipping production systems people rely on, owning problems end to end, and automating painful processes rather than repeating them
Experience building and operating evaluation, measurement, or model serving systems, such as AI evals, experimentation, ranking/relevance, or routers
Ability to turn ambiguous "quality" questions into concrete metrics, pipelines, and decisions
Fluency with data and the ability to collaborate effectively with data scientists and researchers
Taste and real curiosity about model and agent behavior, including trying new models the day they come out and forming opinions about where each one shine

ADDITIONAL REQUIREMENTS:

Onsite role: must be able to work in person at the New York or San Francisco office

COMPENSATION AND BENEFITS:

The annual compensation range for this role is listed below.

Annual Salary:

$140,000 - $225,000 USD

Your actual level and base salary will be determined on a case-by-case basis and may vary based on the following considerations: job-related knowledge and skills, education, and experience.

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.

Work requirements

Jobs in the United States