---
title: 'Software Engineer, Ads Product at xAI'
canonical: 'https://feeny.ai/job/software-engineer-ads-product-xai-palo-alto-c1hnmnak4b05'
type: 'job'
last_seen: '2026-09-07'
---

# Software Engineer, Ads Product at xAI

- **Company:** xAI
- **Location:** Palo Alto, CA
- **Posted:** 2026-06-02
- **Last confirmed live:** 2026-09-07
- **Apply:** https://job-boards.greenhouse.io/xai/jobs/5152408007

## Job description

SpaceXAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals who appreciate challenging themselves and thrive on curiosity. We operate with a flat organizational structure. All employees are expected to be hands-on and to contribute directly to the company’s mission. Leadership is given to those who show initiative and consistently deliver excellence. Work ethic and strong prioritization skills are important. All employees are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates.

## ABOUT THE ROLE:

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 SpaceXAI'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 SpaceXAI'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:

- Strong software engineering fundamentals.
- Ability to write clean, maintainable code and learn new codebases quickly.
- Strong problem-solving skills and comfort working through ambiguity.
- Experience building software through internships, projects, research, open-source work, startups, or full-time roles.
- 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.

## PREFERRED SKILLS AND EXPERIENCE:

- 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.

You do not need to know every technology listed below. We care more about strong fundamentals, learning speed, and ability to ship.

- React
- Golang
- Python
- Rust
- gRPC
- Java / Scala

## COMPENSATION AND BENEFITS:

$150,000 - $350,000 USD

Base salary is just one part of our total rewards package at SpaceXAI, 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. SpaceXAI is an equal opportunity employer. For details on data processing, view our [Recruitment Privacy Notice](https://x.ai/legal/recruitment-privacy-notice).

## About xAI

## Company Overview
- **One‑liner**: xAI builds artificial intelligence systems to accelerate human scientific discovery and “understand the universe,” with products spanning frontier reasoning models, real‑time voice, and generative media.
- **Entity Type**: Private (last funding round: Series E, January 2026; acquired by SpaceX in February 2026)
- **Headquarters**: Palo Alto, California, USA (additional offices in Seattle, WA; Memphis, TN; London, UK)
- **Founded**: 2023
- **Founders**: Elon Musk

## Core Business
- Primary industry: Artificial Intelligence (AI research, large language models, voice AI, generative media)
- Target customers: B2B (developers via API), B2C (consumers via Grok on 𝕏, SuperGrok subscriptions), Enterprise & Government (xAI for Government)
- Mission: “To understand the universe” – building AI that extends what humanity can know and do.

## Products & Services
- **Grok (base models)** : A conversational AI assistant modeled after *The Hitchhiker’s Guide to the Galaxy*, available on the 𝕏 platform and via API.
- **Grok 4 / Grok 4 Heavy**: The most intelligent reasoning models, featuring native tool use and real‑time search integration (SuperGrok and Premium+ tiers).
- **Grok Voice Agent API / Voice Agent Builder**: Create custom voice agents in under two minutes (no‑code) – includes speech‑to‑text, text‑to‑speech, custom voice cloning, and multilingual support.
- **Grok Imagine API**: State‑of‑the‑art video generation API (quality, cost, latency).
- **Grok‑1.5 / Grok‑2 / Grok‑2 mini**: Earlier model releases with improved reasoning and 128K context length.
- **PromptIDE**: An integrated development environment for prompt engineering and interpretability research.
- **xAI for Government**: A suite of frontier AI products tailored for U.S. government customers.
- **Colossus Supercomputer**: 200,000‑GPU cluster built in 122 days, used for training xAI models; now also leased to Anthropic (Colossus 1 agreement).

All products are delivered as SaaS, API, and model weights (open‑source release of Grok‑1).

## Market Standing
- **Valuation / Funding**: 
  - Series B (May 2024): $6 B 
  - Series C (Dec 2024): $6 B (led by A16Z, BlackRock, Fidelity, Kingdom Holdings, Lightspeed, MGX, Morgan Stanley, OIA, QIA, Sequoia, Valor, Vy Capital, others)
  - Series E (Jan 2026): $20 B
  - Acquisition by SpaceX announced Feb 2, 2026 (terms not disclosed).
- **Key Metric**: Total disclosed funding ~$32 B; annual revenue not publicly available.
- **Notable Investors/Partners**: A16Z, BlackRock, Fidelity, Sequoia Capital, Morgan Stanley, Kingdom Holdings, Lightspeed, MGX, Valor Equity Partners, Vy Capital, Anthropic (Colossus deal), U.S. Department of War (selected Dec 2025).
- **Growth Signals**: 
  - Rapid scaling from founding to 200K‑GPU cluster in 122 days.
  - Over 214 open roles listed on Greenhouse as of mid‑2026.
  - #1 on Big Bench Audio (Grok 4 audio performance).
  - Expanded into voice agents, video generation, and government verticals within 3 years.
  - Acquisition by SpaceX signals deep integration with space‑tech resources.

## Competitive Advantages
- **Compute infrastructure**: Colossus supercomputer – one of the largest GPU clusters in existence, enabling faster training and larger models.
- **Model performance**: Grok 4 claims “most intelligent model in the world” with top benchmarks (Big Bench Audio #1).
- **Vertical integration**: Tight coupling with 𝕏 platform for data, distribution, and real‑time world knowledge.
- **Speed of execution**: “Move quickly and fix things” culture; built Colossus in 122 days.
- **Government contracts**: Early access to public‑sector AI markets (U.S. Department of War).
- **Talent density**: Small, focused team of researchers and engineers; in‑person work accelerates iteration.

## Strategic Focus
- **Continue advancing frontier reasoning** (Grok 4 Heavy, next‑gen models).
- **Expand voice and multimodal APIs** for developers (Voice Agent Builder, Custom Voices Library).
- **Deepen government / defense partnerships** (xAI for Government, Department of War).
- **Scale infrastructure** post‑acquisition via SpaceX resources.
- **Remain “open” where strategic** (open‑source release of Grok‑1 weights).

## Why Work Here
- **Culture**: “Ambitious goals, fast execution” – rejects consensus in favor of first‑principles reasoning. In‑person work prioritized (Palo Alto, Seattle, Memphis, London).
- **Benefits**: 
  - Competitive cash + equity compensation.
  - Comprehensive medical, dental, vision, disability, life insurance.
  - 401(k) plan, fertility benefits, flexible vacation.
  - Visa sponsorship offered.
- **Engineering culture**: No recruiters for assessments – applications reviewed directly by technical team. Interview process: application → screening → technical interviews → offer.
- **Mission‑driven**: Opportunity to work on frontier AI models that aim to “advance humanity.”
- **Perks**: In‑person collaboration, fast‑paced environment, ownership of meaningful projects.

## Sources
1. [x.ai/company](https://x.ai/company)
2. [x.ai/careers](https://x.ai/careers)
3. [job-boards.greenhouse.io/xai](https://job-boards.greenhouse.io/xai)
4. [x.ai/news](https://x.ai/news)
5. [x.ai/careers/open-roles](https://x.ai/careers/open-roles)

## Other roles at xAI

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- [Legal Operations Specialist](https://feeny.ai/job/legal-operations-specialist-xai-palo-alto-yvgq5sxqmheq) — Palo Alto, CA
- [Agency Development Manager](https://feeny.ai/job/agency-development-manager-xai-new-york-6zsw61w04xfw) — New York, NY
- [AI Tutor - Design Specialist](https://feeny.ai/job/ai-tutor-design-specialist-xai-global-gyys8ysv19rj) — Global
- [AI Tutor - Humanities](https://feeny.ai/job/ai-tutor-humanities-xai-global-f8b939y59f97) — Global
- [Network Operations Center Specialist - Memphis](https://feeny.ai/job/network-operations-center-specialist-memphis-xai-southaven-5eaecc9mwq8n) — Southaven, MS / Memphis, TN
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