---
title: 'Information Systems Security Manager at General Matter'
canonical: 'https://feeny.ai/job/information-systems-security-manager-general-matter-los-angeles-yem8mjsphzwh'
type: 'job'
last_seen: '2026-10-25'
---

# Information Systems Security Manager at General Matter

- **Company:** General Matter
- **Location:** Los Angeles, CA
- **Posted:** 2026-10-22
- **Last confirmed live:** 2026-10-25
- **Apply:** https://job-boards.greenhouse.io/generalmatter/jobs/5460712008

## 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:

General Matter is seeking a classified cyber assurance expert to build out our GRC and RMF processes within the Software organization to ensure mission success. The candidate for this role will have strong ownership over the following aspects of General Matter’s information systems security program:

- Relationship: the candidate will be the representative and primary owner of General Matter’s information systems security program, and relate it to the needs of both internal and external parties
- Assessment: the candidate will be the subject matter expert within the General Matter Software organization for all processes related to regulatory compliance
- Delivery: the candidate will be responsible for clarifying and interpreting all requirements to unblock engineering teams and be responsible for delivering compliance with those requirements

Responsibilities:

- Responsible for owning the RMF lifecycle to ensure regulatory compliance for General Matter classified information systems
- Ensure that all General Matter classified information systems remain provably compliant within regulatory requirements
- Actively collaborate with internal engineering teams to own regulatory overhead risk and ensure mission success without compromising on security
- Work with software engineers to evaluate and build automated tools to drive security policy assessment, auditing, and enforcement at scale
- Work with government partners to plan and coordinate external audits and tests
- Assist in building out the GRC suite of tools that will be used across all classified information systems at General Matter
- Ability to cut through ambiguous definitions and solve problems from first principles
- Build security into the General Matter operational model as a first-order requirement at all levels of the software stack

Basic Qualifications:

- Evidence of exceptional ability (prior projects, portfolio of work, completed products, etc).
- Strong understanding of engineering fundamentals.
- Ability to perform trade studies and make clear recommendations using first principles and engineering fundamentals even with partial information.
- 3+ years of managing cyber assurance for classified computer networks

Preferred Skills and Experience:

- Experience with operating in a NIST 800-53 enivronment
- Experience in a fast-paced engineering or highly technical environment, with a resourceful approach to delivering under tight timelines or budget constraints.
- Experience building an approved classified space from the ground up on ambitious timelines
- Expertise with the 7-step RMF process and how it relates to modern software development
- Experience implementing 10 CFR Part 810 export-control and U.S.-person access restrictions as enforced technical controls on classified systems, in coordination with the FSO.
- Experience obtaining ATOs under DoD or DOE authorization boundaries
- Expertise with COMSEC procedures and practices
- Experience writing and delivering complex software systems in a highly regulated environment

Additional Requirements:

- Ability to obtain and maintain a DoE Q-level clearance eligibility
- 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 $180,000–$260,000 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)

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