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About the Role

As a Security Engineer at Hadrian, you will shape the security of our platform as we expand to serve external customers and partners. You will drive the transition to Factory-as-a-Service, with identity, multi-tenancy, and data boundaries at the core. This is a full-stack role spanning application code, cloud, Kubernetes, identity management, and operational technology on the factory floor. You will work with innovative systems, some being developed here for the first time, including manufacturing and OT environments that few security engineers have encountered. Join us as a founding member of a rapidly growing security team, establishing standards, best practices, and tools that will scale our security from the ground up. You will tackle challenges end-to-end, learning unfamiliar systems and designing solutions that make secure practices the default.

Responsibilities

Own security end-to-end across the whole stack — application code, cloud infrastructure (AWS/GCP), Kubernetes workloads, identity and authorization, and the factory-floor and operational-technology systems that produce real parts.
Scale security through automation by building agentic tooling and automation loops — AI-driven checks, paved-road patterns, self-enforcing guardrails — that let coverage grow with what you build rather than with headcount.
Investigate, contain, and drive incidents to resolution, then turn each one into a systemic fix and a better default.
Map how unfamiliar systems work, identify where the real risk lies, and design controls that fit the way Hadrian builds.
Build practical foundations for CMMC 2.0 / NIST 800-171 and the ITAR boundary as controls that hold up under audit.

Requirements

Ship the fix, not just the finding; solve problems by building guardrails and tooling — SDKs, CLIs, CI/CD checks, and patterns — that make it easy to do the right thing and hard to do the wrong one.
4+ years in security engineering, software engineering, or infrastructure/platform engineering, with real hands-on security ownership.
Fluency with agentic systems, including familiarity with agentic loops and task delegation — building with or on LLM agents and automation.
Ability to move fast and learn faster, take an under-specified mission, decide where to start, make sound calls under uncertainty, and ramp on something unfamiliar quickly.
Ability to weigh risk against innovation and make the trade-off explicit on real decisions.
A track record of deleting controls or process — retiring checks that shouldn't exist and proving the automated replacement held.
Genuine breadth and curiosity, moving between application security, cloud and Kubernetes security, identity/authorization, and networking, with a desire to understand how new layers work.
GCC High administration or migration experience.
Security experience in manufacturing or OT environments.
Familiarity with ITAR/EAR and CUI marking and handling requirements.
Ability to mentor and grow a team, set technical direction, and level up engineers.

Skills

Go
Python
AWS
GCP
Kubernetes
Identity and Authorization
Operational Technology (OT)
Agentic Systems
LLM Agents
Automation
CMMC 2.0
NIST 800-171
ITAR
EAR
CUI

Work Type

Full-time

Experience Level

4+ years

Salary/Compensations

$160,000 - $230,000

Benefits

Medical, dental, vision, and life insurance plans
401k
Relocation support may be provided
Flexible vacation policy
Equity

About the Company

Hadrian is building autonomous factories to reindustrialize America by combining AI, advanced software, robotics, and full-stack manufacturing.
We help aerospace and defense companies build rockets, satellites, aircraft, ships, and other mission-critical systems up to 10x faster and at significantly lower cost.
Following our $1.37B Series D at a $7.87B valuation, Hadrian is rapidly expanding our manufacturing footprint, launching new capabilities across welding, casting, forging, electronics, additive manufacturing, and more, while scaling our Factory-as-a-Service platform to transform how critical products are built.
Backed by leading investors including JPMorgan Chase, Valor Equity Partners, Andreessen Horowitz, Founders Fund, 137 Ventures, Lux Capital, T. Rowe Price, and Morgan Stanley.
We’re building the future of American manufacturing and looking for exceptional people to help make it happen.
If you’re ready to take on the most challenging and rewarding work of your career while helping create American manufacturing jobs for generations to come, you’re exactly who we’re looking for.

Equal Opportunity

Hadrian will consider for employment qualified applicants with criminal histories in a manner consistent with the requirements of all applicable laws.
Hadrian uses AI-assisted tools in our recruiting and hiring processes to help our team work more efficiently. All candidate evaluations and hiring decisions are performed by humans.
It is the Company’s policy to provide equal employment opportunity for all applicants and employees. The Company does not unlawfully discriminate on the basis of race inclusive of traits historically associated with race (including, but not limited to, hair texture and protective hairstyles, such as braids, locks and twists), color, religion, sex (including pregnancy, childbirth, or related medical conditions), gender identity, gender expression, transgender status, national origin (including, in California, possession of a drivers license), ancestry, citizenship, age, physical or mental disability, height or weight, medical condition, family care status, military or veteran status, marital status, domestic partner status, sexual orientation, genetic information, exercise of reproductive rights, any other basis protected by local, state, or federal laws, or any combination of the above characteristics.
When necessary, the Company also makes reasonable accommodations for disabled candidates and employees, including for candidates or employees who are disabled by pregnancy, childbirth, or related medical conditions.