---
title: 'Lead Fiber Technician - Memphis at xAI'
canonical: 'https://feeny.ai/job/lead-fiber-technician-memphis-xai-southaven-4d4qffgkm2te'
type: 'job'
last_seen: '2026-10-19'
---

# Lead Fiber Technician - Memphis at xAI

- **Company:** xAI
- **Location:** Southaven, MS / Memphis, TN
- **Posted:** 2026-06-26
- **Last confirmed live:** 2026-10-19
- **Apply:** https://job-boards.greenhouse.io/xai/jobs/5175158007

## 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.

## ABOUT THE ROLE:

As a Lead Fiber Technician on SpaceXSI's traveling data center build team, you will lead crews in the installation, testing, and commissioning of high-performance fiber optic infrastructure across multiple new and expanding data center sites. You’ll bring strong leadership, technical expertise, and a safety-first mindset to fast-paced hyperscale construction projects. This role involves significant travel to support greenfield and expansion builds, ensuring reliable, high-speed network connectivity that powers SpaceXSI's AI training clusters. You will mentor technicians, drive execution excellence, and help deliver mission-critical infrastructure on aggressive timelines.

## RESPONSIBILITIES:

- Serve as crew leader for traveling fiber teams, managing daily work assignments, resource allocation, and execution based on Fiber Span sheets, site surveys, path planning, and cross-functional coordination.
- Lead and mentor a team of Fiber Technicians across multiple project sites, providing on-the-job training, technical guidance, and performance feedback.
- Oversee all phases of fiber optic installation projects from planning and mobilization through execution, testing, handover, and closeout at new data center builds.
- Ensure a safe, productive, high-quality, and compliant work environment in dynamic construction settings.
- Develop and monitor sensor indicators; conduct timely inspections and quality checks to prevent system issues.
- Troubleshoot, resolve, repair, and install complex fiber optics systems in both OSP and ISP environments.
- Lead fiber splicing (fusion and mechanical), termination, labeling, and certification activities.
- Examine, replace, and optimize faulty or aging fiber optic cables and infrastructure.
- Organize scheduled maintenance, testing routines, and documentation during build phases.
- Monitor signal strength, attenuation, and overall network performance; maintain detailed system records, as-built drawings, and designs.
- Coordinate closely with superintendents, project managers, other trades (electrical, mechanical, controls), and GC teams to align with overall data center construction schedules.
- Support site mobilization/demobilization, tool/equipment management, and knowledge transfer between projects.

## BASIC QUALIFICATIONS:

- 5+ years of direct experience in fiber optic installation, splicing, and testing in large-scale data center or critical infrastructure environments (Tier 3/4 or hyperscale preferred).
- 2+ years in a foreman, crew lead, or supervisory role leading fiber/cabling teams.
- Proven experience working on traveling or multi-site construction/build projects.
- High school diploma or equivalency certificate.
- Strong hands-on knowledge of fiber optic best practices, OTDR/power meter testing, structured cabling, and safety protocols.

## PREFERRED SKILLS AND EXPERIENCE:

- Certification in fiber optics and/or cable installation (e.g., FOA, BICSI, or equivalent).
- Extensive experience with fusion splicing, high-density fiber deployments, and hyperscale/AI/HPC data center environments.
- Technical knowledge of communication networks, different fiber types (single-mode, multi-mode, etc.), and associated systems.
- Background in data center greenfield construction or rapid deployment projects.
- Experience coordinating with general contractors and multi-trade teams in fast-paced builds.
- Proficiency with project documentation, digital tools, and quality assurance processes.

## ADDITIONAL REQUIREMENTS:

- Willingness and ability to travel extensively (typically 50-75% or more, depending on project needs) to SpaceXSI data center construction sites across the US, with potential for extended stays at project locations.
- Ability to work in tight quarters, at elevated heights (up to 50 feet with proper safety gear), and in active construction environments.
- Ability to lift up to 35lbs unassisted and maintain physical dexterity for installation tasks.
- Comfortable working in high-noise environments and varying weather conditions.
- Flexibility to work evenings, weekends, and extended hours as dictated by project schedules and deadlines.
- Valid driver’s license and clean driving record (company vehicle or travel support provided).

SpaceXSI 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)

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