---
title: 'Security Engineer at General Matter'
canonical: 'https://feeny.ai/job/security-engineer-general-matter-los-angeles-0rrjjyf7y19a'
type: 'job'
last_seen: '2026-10-18'
---

# Security Engineer at General Matter

- **Company:** General Matter
- **Location:** Los Angeles, CA
- **Posted:** 2026-05-30
- **Last confirmed live:** 2026-10-18
- **Apply:** https://job-boards.greenhouse.io/generalmatter/jobs/5223997008

## Job description

## About the Company

General Matter enriches uranium.

We are designing, building, and operating the world’s lowest-cost enrichment services, here in the US.

In the process, we are restoring America’s ability to produce nuclear fuel to power AI, advanced manufacturing and critical industries our country relies on to remain competitive.

Fuel drives the cost of advanced reactor electricity production, and enrichment drives the cost of the fuel that advanced reactors consume.  Reliable, low-cost enrichment is the catalyst for the nuclear Renaissance now under way.

Our mission is to make nuclear not only the cleanest and safest source of baseload power, but also the most affordable.  We believe abundant nuclear energy will lead to a post-scarcity society.

We were incubated inside Founders Fund, like Anduril and Palantir before us, and are backed by over a dozen of the world's top venture capital firms.

Our lean, world-class team of engineers and operators is applying a first-principles approach to solving the problem of nuclear fuel production.

We are a mission-driven company with a culture of urgency, accountability, and transparency.

Help us build a high-energy society by making the cleanest, safest form of baseload energy the most affordable.

## About This Role

As a General Matter Security Engineer, you will play a critical role in protecting the systems, infrastructure, and information that enable our mission. You will design, implement, and continuously improve security controls across corporate, product, and regulated environments, helping ensure the confidentiality, integrity, and availability of our technology and operations.

This role spans cloud, on-premises, air-gapped, and highly restricted environments, requiring a practical, hands-on approach to cybersecurity in support of both business and engineering objectives. You will work closely with software engineers, IT, infrastructure, manufacturing, nuclear, and operations teams to embed security throughout the organization, from product development and infrastructure design to compliance, incident response, and operational readiness.

If you thrive in high-impact environments, enjoy solving complex security challenges, and are excited to help build secure systems from the ground up in a fast-paced, Skunkworks-style organization, we encourage you to join our team.

## Responsibilities

- Design, implement, and maintain security controls across product, infrastructure, corporate, and regulated environments.
- Secure cloud, on-prem, air-gapped, and classified systems in alignment with NRC, federal, and internal security requirements.
- Support security operations, including monitoring, detection engineering, incident response, vulnerability management, and remediation tracking.
- Implement and improve identity and access management controls across workforce systems, production environments, and privileged access workflows.
- Partner with engineering teams to embed application security and secure SDLC practices across hardware, firmware, and software development.
- Contribute to GRC efforts, including policy implementation, risk assessments, audit readiness, NRC licensing support, and classified facility accreditation preparation.

## Basic Qualifications

- 5+ years of hands-on cybersecurity experience across infrastructure, product, cloud, or security operations domains.
- Practical experience implementing security controls in production or high-stakes environments.
- Experience working in regulated environments such as federal, defense, nuclear, classified, ITAR, or similarly controlled settings.
- Strong technical knowledge of cloud security, network security, endpoint security, IAM, and security monitoring.
- Experience supporting incident response, vulnerability management, or security event investigation in operational environments.
- Ability to work cross-functionally with engineering, IT, compliance, and operations teams to drive security improvements.

## Preferred Skills and Experience

- Experience supporting NRC licensing, classified facility buildouts, or federal frameworks such as NIST 800-53, NIST 800-171, RMF, or STIGs.
- Familiarity with hardware security, embedded systems, industrial control systems, or operational technology environments.
- Experience designing or operating secure architectures for hybrid cloud, air-gapped, or highly restricted systems.
- Fluency with modern DevSecOps tooling, detection engineering, infrastructure-as-code security, and automation.
- Experience contributing to security policies, control documentation, audits, or compliance evidence collection.
- Strong written and verbal communication skills, with the ability to explain security risks and tradeoffs to technical and non-technical stakeholders.

Additional Requirements

- Ability to work extended hours and weekends as necessary.

## Equal Opportunity Employer

General Matter is an Equal Opportunity Employer; employment with General Matter is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.

## Compensation and Benefits

The base salary range for this role is $100,000–$180,000 annually.

Compensation bands are determined by role, level, location, and alignment with market data. Individual level and base pay is determined on a case-by-case basis and may vary based on job-related skills, education, experience, technical capabilities and internal equity. Please note that the stated salary range is an estimate and may be adjusted based on market conditions, business needs, or other factors. In addition to base salary, for full-time hires, you may also be eligible for long-term incentives, in the form of stock options, and access to medical, vision & dental coverage as well as access to a 401(k) retirement plan.

## About General Matter

## Core Business
- **Primary industry**: Nuclear energy – uranium enrichment, nuclear fuel supply chain
- **Target customers**: Nuclear power plant operators (civilian reactors, small modular reactors, microreactors), data center operators, industrial manufacturers, and government/defense entities
- **Mission**: “Restore US leadership in nuclear fuel” and “make the cleanest, safest form of baseload energy the most affordable” [generalmatter.com/mission](https://generalmatter.com/mission/)

## Products & Services
- **Low Enriched Uranium (LEU)**: Enrichment of uranium to 3-5% U-235 for existing US civilian reactors (supplying ~20% of US grid power)
- **High Assay Low Enriched Uranium (HALEU)**: Enrichment to 5-20% U-235 for next-generation small modular reactors (SMRs) and microreactors
- **Enrichment as a Service**: Novel, scalable, cost-competitive enrichment technology to fill the critical gap in the US nuclear fuel cycle (conversion → enrichment → deconversion/fabrication)

## Market Standing
- **Valuation/Market Cap**: Not disclosed (private company)
- **Key Metric**: Currently hiring for 64+ roles across engineering, construction, legal, and operations; actively building enrichment capacity
- **Notable Investors/Partners**: Described as backed by “institutions” and “generational companies” – specific names not publicly available [generalmatter.com/careers](https://generalmatter.com/careers/)
- **Growth Signals**: Aggressive hiring across multiple disciplines; establishing a physical presence in Los Angeles (HQ) and Paducah, Kentucky (construction/manufacturing); addressing a critical national security gap (US currently performs <1% of global enrichment)

## Competitive Advantages
- **Domestic enrichment technology**: Novel, proprietary enrichment process designed to be cheaper, more reliable, and scalable compared to foreign state-backed competitors
- **National security moat**: Sole US-focused enrichment startup aiming to break dependence on Russian and Chinese supply chains
- **Talent pool**: Attracts high-caliber individuals from nuclear engineering, technology, finance, and special operations backgrounds
- **First-mover in HALEU**: Positioned to fuel the next wave of advanced reactors and behind-the-meter power for AI data centers

## Strategic Focus
- **Scale domestic enrichment capacity**: Build and operate enrichment facilities in the US (Los Angeles and Paducah)
- **Support AI and manufacturing growth**: Provide reliable, emissions-free baseload power for compute and industrial expansion
- **Enable advanced reactors**: Supply HALEU for SMRs and microreactors, opening new markets in remote and austere environments
- **Strengthen US energy independence**: Restore US leadership in nuclear fuel production

## Why Work Here
- **Culture**: High standards, extreme ownership, copious autonomy, deep trust, zero politics – described as “work with the best across nuclear, tech and finance” [generalmatter.com/careers](https://generalmatter.com/careers/)
- **Work environment**: On-site roles in Los Angeles, CA (engineering, nuclear, legal) and Paducah, KY (construction, procurement); no remote/hybrid options explicitly stated
- **Notable perks**: Mission-driven work with national impact; opportunity to solve a critical energy and security challenge; flat organization with high agency
- **Engineering culture**: Emphasis on control systems, embedded software, simulation, DevOps, and nuclear safety engineering; also seeks creative minds and numbers savants

## Sources
1. [generalmatter.com](https://generalmatter.com/)
2. [generalmatter.com/careers](https://generalmatter.com/careers/)
3. [generalmatter.com/mission](https://generalmatter.com/mission/)
4. [generalmatter.com/technology](https://generalmatter.com/technology/)
5. [job-boards.greenhouse.io/generalmatter](https://job-boards.greenhouse.io/generalmatter)

## Other roles at General Matter

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