Jobs in the United States

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Added 10 mins ago
Site Civil Engineering Team Lead
HDR
Greenville, SC · Columbia, SC · Charleston, SC
…environment. This isn’t just a job, it’s a chance to lead innovation, engineer impact, and build a legacy of…
Added 10 mins ago
AV Engineer
Slalom LLC
Seattle, WA
You will partner with IT Infrastructure, Workplace Technology, Facilities, project teams, vendors, and AV integrators to deliver consistent, high-quality collaboration experiences across…
Added 10 mins ago
Bridge Engineer
HNTB Corporation
Salt Lake City, UT · Denver, CO
…for assigned projects. This position works closely with the project manager to perform research, development, calculations, design and delivery. Applies engineering techniques, procedures…
Added 10 mins ago
Structures Team Leader
HNTB Corporation
Salt Lake City, UT · Las Vegas, NV · Denver, CO
This opportunity entails being responsible for managing assigned project(s) throughout their full lifecycle including developing the scope and technical sections of proposal and procurement…
Added 12 mins ago
Staff Associate - Environmental Group
BUNNELL LAMMONS ENGINEERING
Greenville, SC · Easley, SC · Laurens, SC · Columbia, SC · Lexington, SC
Follow established quality assurance procedures, project specifications, and regulatory requirements.
Added 17 mins ago
Engineer II Mechanical
Zachry Group
Stonington, CT · Charlotte, NC · Williamsburg, VA
Zachry Nuclear Engineering (ZNE) is seeking a Mechanical - Engineer II to join our growing team. Working alongside experienced engineers, you'll contribute to engineering design, technical…
Added 17 mins ago
Senior Substation P&C Engineer - Transmission & Distribution (Mid Atlantic Region)
Burns & McDonnell
Richmond, VA · Baltimore, MD · Washington, DC · Raleigh, NC
The Senior Substation P&C Engineer will lead the preparation of protection and control design deliverables for new and modified high-voltage (13kV to 765kV) electrical power substation…
Added 22 mins ago
BO
SUPERVISORY CIVIL ENGINEER
Bureau of Reclamation
Lakewood, CO
- $140,239 to $182,316 USD / year
-Monitor, evaluate, and oversee project execution to ensure technical quality, cost control, schedule adherence, and compliance with standards.
Added 22 mins ago
BO
SUPERVISORY CIVIL ENGINEER
Bureau of Reclamation
Lakewood, CO
- $140,239 to $182,316 USD / year
-Monitor, evaluate, and oversee project execution to ensure technical quality, cost control, schedule adherence, and compliance with standards.
Added 22 mins ago
Hardware Engineer
NCR VOYIX
ATLANTA, GA
The engineer will provide engineering review and guidance for new product development such as developing product specifications and necessary test plans. They will investigate complex…
Added 25 mins ago
VH
Healthcare Engineer - Project Engineer
Veterans Health Administration
Seattle, WA
- $62,504 to $141,154 USD / year
The position serves as a Project Engineer at Puget Sound Health Care System (VAPSHCS). This position performs project planning, produces designs, manages designs, manages construction, and…
Added 25 mins ago
VH
Healthcare Engineer - Project Engineer
Veterans Health Administration
Seattle, WA
- $62,504 to $141,154 USD / year
The position serves as a Project Engineer at Puget Sound Health Care System (VAPSHCS). This position performs project planning, produces designs, manages designs, manages construction, and…
Added 27 mins ago
R
Associate Consultant, Environmental Engineer/Geologist
Ramboll
Houston, Texas, TX
- $61,337 to $76,671 USD / year
Overseeing and managing remedial activities in the field, ensuring technical quality and safety.
Added 28 mins ago
EB
Engineering Aide (Part-time)
East Bay Municipal Utility District
Oakland, CA
- $6,254 to $7,602 USD / month
- Part-time
Supporting the Project Engineer with site visits and field data collection.
Added 29 mins ago
E
Software System Engineer
ESM
Fort Belvoir, VA
- $136,000 to $162,000 USD / year
Ability to collaborate with program and project management, establish technical priorities, support project planning, and oversee software testing, validation, configuration management,…
Added 31 mins ago
AC
ENGINEERING TECHNICIAN (CIVIL)
Air Combat Command
Moody AFB, GA
- $61,722 to $80,243 USD / year
The primary purpose of this position is to ensure optimal resource decisions are made and executed across civil engineer activities, and ensure data and information from all shops are…
Added 31 mins ago
Quality Engineer
Enterprise Precast Concrete
Omaha, NE
The Quality Engineer's mission is to ensure all architectural precast concrete products strictly meet project drawings, architectural specifications, dimensional tolerances, and visual…
Added 31 mins ago
Semantic Data and AI Engineer
Enterprise Knowledge
Remote, United States
Enterprise Knowledge (EK) is hiring a full-time Semantic Data and AI Engineer to join our growing Semantic Engineering and AI Practice. In this role, you will be responsible for designing…
Added 34 mins ago
AC
CIVIL ENGINEER
Air Combat Command
Shaw AFB, SC
- $89,508 to $116,362 USD / year
The primary purpose of this position is to serve as a professional civil engineer, performing design, project programming and construction management/monitoring duties in support of a…
Added 36 mins ago
VH
Engineering Technician
Veterans Health Administration
Charleston, SC
- $74,678 to $97,087 USD / year
…the facility record document program, evaluating and tracking project requests, acting as a liaison for in-house construction, and assisting Engineering Leadership as explained in the…
Added 46 mins ago
UG
Advisory Services Analyst, Consultant Development Program - AI/ML Engineering Track - Multiple Locations
UnitedHealth Group
Eden Prairie, MN
- $60,200 to $107,400 USD / year
…organizations reduce costs while improving risk management, quality and revenue growth. Ready to help us deliver results that improve lives? Join us in making healthcare work better for…
Added 48 mins ago
Sr. Mechanical Engineer - Liquid Cooling (TCS/SFN)
Vertiv
Westerville, OH
Launch and coordinate a global SFN engineering team across Westerville, Monterrey, India, and China, assign accountable tasks per project and ensure global alignment.
Added 50 mins ago
Manufacturing Engineer Lead Senior
International Motors, LLC
Lisle, IL
International Motors is seeking an experienced Manufacturing Engineer Lead Senior. to lead the development, implementation, and continuous improvement of manufacturing processes, assembly…
Added 53 mins ago
US
SUPERVISORY GENERAL ENGINEER
United States Fleet Forces Command
Naval Shipyard, Portsmouth, VA
- $127,646 to $165,945 USD / year
You will serve as a SUPERVISORY GENERAL ENGINEER in the Expanded Planning Yard Division (Code 280), Office of the Chief Engineer (Code 240), Engineering and Planning Department (Code 200)…
Added 54 mins ago
DevSecOps Engineer - Active TS/SCI with CI Poly
ENS Solutions, LLC
Reston, VA
As a DevSecOps Engineer I, you’ll play a critical role in designing, implementing, and maintaining secure and efficient software development and deployment pipelines. You will collaborate…

SpaceXSI

Sr. Software Engineer, Ads Product

Palo Alto, CA, United States

$180,000 - $330,000 USD

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Job details

Pay: $180,000 - $330,000 USD
Experience: 5+ years of experience building software through internships, projects, research, open-source work, startups, or full-time roles
Posting language: English
Posted: Nov 6, 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, ADS PRODUCT

X Ads is one of the highest-leverage product areas at X. You’ll work on systems that operate at massive scale, directly affect the business, and are being rebuilt with modern infrastructure and AI at the center. This is an opportunity to join a small, fast-moving team where early-career engineers can take on real ownership, learn from strong engineers, and ship products that matter.

We’re looking for high-slope software engineers who want to help rebuild and transform the X Ads Platform using SpaceXSI's infrastructure and AI stack. This role is a great fit for engineers who are early in their careers but learn quickly, ship fast, and want to work on products and systems that operate at massive scale. You do not need to have deep ads experience already, but you should be excited to learn how large-scale advertising systems work and how AI can make ads more relevant, useful, and effective.

You’ll work across product, backend systems, infrastructure, and AI-powered features that directly impact the majority of X’s revenue.

RESPONSIBILITIES:

Build 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
Contribute to distributed systems that need to be reliable, fast, and scalable
Collaborate closely with engineers, product leads, and cross-functional partners to turn ideas into working products
Learn quickly, take ownership, and operate in a fast-moving environment where high-quality execution matters
Debug, maintain, and improve production systems that serve real users and drive significant business impact

BASIC QUALIFICATIONS:

5+ years of experience building software through internships, projects, research, open-source work, startups, or full-time roles

PREFERRED SKILLS AND EXPERIENCE:

Strong software engineering fundamentals
Ability to write clean, maintainable code and learn new codebases quickly
Strong problem-solving skills and comfort working through ambiguity
Interest in backend systems, distributed systems, data pipelines, product engineering, or AI applications
A bias toward action: you like shipping, learning from real users, and improving quickly
Strong ownership mindset and willingness to take responsibility for meaningful parts of the product
Excitement about building high-quality product experiences for advertisers and users
Experience with ads, recommendations, search, ranking, marketplaces, payments, analytics, or growth systems
Experience working with large-scale backend systems or data processing pipelines
Experience with React, Golang, Python, Rust, gRPC, Java, or Scala
Experience with machine learning, LLMs, experimentation, ranking, or optimization systems
Prior startup, research, internship, or high-impact project experience
Experience with React, Golang, Python. Rust, gRPC, and/or Java/Scala
Strong fundamentals, learning speed, and ability to ship

COMPENSATION AND BENEFITS:

$180,000 - $330,000 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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Skills

Google Ads
BASIC
Research
Problem solving
Process data
React
Go
Python
Rust
Oracle Java
Scala
Machine learning

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