Security Engineer
- Location
- San Leandro, CA
- Listed
- 22 days ago
About the Role
We're hiring our first dedicated Security Engineer to own security across a growing and technically diverse footprint: cloud infrastructure, software development practices, control systems, and data collection pipelines. You'll work alongside our IT Systems Administrator, who owns day-to-day device/identity operations - you'll set the security strategy, standards, and technical controls, and partner with them on enforcement. This role sits at the intersection of cloud security, DevSecOps, and OT/control-systems security with real ownership from day one.
What We Value
- Obsess about the details - sloppy work costs us later, so do it right the first time.
- Care - pick up the trash. Do things no one asks you to do. Go the extra mile because you care.
- Act with urgency - every hour matters more than it feels like it does.
- Be responsible for the outcome, not just the task; if it is not working, it remains your problem until it is fixed.
- Assume good intent - disagree openly, then commit fully once a call is made.
Core Responsibilities
- Own security posture for AWS infrastructure managed via Terraform and Spacelift, including IAM policy review, secrets management, and network segmentation.
- Partner with engineering to build security into the SDLC and CI/CD pipeline - code scanning, dependency/vulnerability management, secure defaults for new services.
- Assess and secure control systems and data collection infrastructure.
- Own and operate our security monitoring and detection tooling; triage alerts and build out detection coverage over time.
- Define access-control standards (conditional access, least privilege, MFA policy) in IdP and across SaaS tools; partner with IT Admin on enforcement.
- Define MDM security baselines (macOS/Windows) for IT to implement and maintain.
- Build and lead incident response efforts when issues arise.
- Track security risk across the environment and lay groundwork for relevant compliance frameworks as the company matures.
- Run periodic security awareness efforts (phishing simulations, training) for a non-security-native team.
Minimum Qualifications
- 4+ years in a security engineering role spanning cloud security and application/DevSecOps work.
- Strong hands-on experience with AWS and Infrastructure-as-Code (Terraform).
- Practical experience with identity security - SSO/IdP policy (Okta or equivalent), conditional access, least-privilege design.
- Experience with a security monitoring/detection platform (SIEM, EDR, or specialized tools) - alert triage, tuning, investigation.
- Solid understanding of secure SDLC practices - SAST/DAST, dependency scanning, secrets management, code review for security issues.
- Strong ability to communicate risk clearly to non-security stakeholders and make pragmatic trade-offs for a small, fast-moving company.
Preferred Qualifications
- Direct experience securing control systems, OT, or industrial environments.
- Experience with CI/CD-integrated IaC workflows (Spacelift or similar).
- Experience with data collection pipeline security (data integrity, sensor/telemetry access controls).
- Prior experience as employee #1 or #2 on a security team, building programs from scratch.
- Compliance experience (SOC 2, ISO 27001, NIST, or sector-specific frameworks relevant to hardware/control systems companies).
- Scripting/automation skills (Python, Go) to build custom detections or automate security tooling.
- Experience in a company where hardware, CAD/simulation workstations, or physical systems intersect with traditional IT.
Additional Requirements
- Comfortable being the sole dedicated security resource, setting strategy while partnering with IT for day-to-day enforcement.
- Availability for incident response outside standard business hours when needed.
- Based in or willing to work from our San Leandro, CA office given the control systems and hardware-adjacent scope of the role.
- Occasional travel to other Fuse locations.
- Willingness to obtain relevant certifications (e.g., AWS Security, GIAC/GSEC) if not already held, as the role and compliance needs mature.
Benefits
- Medical, dental, and vision coverage.
- Relocation assistance for roles that require it.
- Flexible time off. Take what you need, no accrual tracking.
- 2 weeks of paid time off built into the end of each year (subject to team and business needs).
- Supportive leave of absence policies.
- Paid leave for new parents.
Itar Requirements
To conform to U.S. Government technology export regulations, including the International Traffic in Arms Regulations (ITAR), you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State.
About Fuse
We are building one of the most potentially consequential companies of the century. Our mission is to accelerate the world's transition to fusion energy while safeguarding humankind. This is not a normal company. This is not a normal job. We are committed for the long term to win.
Equal opportunity and legal notices
Fuse is an Equal Opportunity Employer; employment with Fuse is governed on the basis of merit, competence, and qualifications and will not be influenced by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, ancestry, immigration status, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status.
From Fuse's careers page, first listed on Rolev.ai on October 17, 2026. Rolev.ai is not the employer.
How Rolev.ai helps with this application
Rolev.ai is a job search and application tool for US job seekers. For this Security Engineer role at Fuse, it shows how your resume fits, tailors your resume to the posting, and prepares the application for you to review.
See how you fit
Openings from employer career sites are ranked against your whole resume—and searchable inside Claude, ChatGPT, and Cursor via Rolev.ai MCP.
Tailor without inventing
Every change to your resume is checked against your original. New experience goes in only with your yes—zero fabricated claims.
Draft the full kit
Tailored and Full Match resumes, role-specific cover letters, and answers to employer screening questions are prepared in seconds.
1-Click Extension Autofill
The Chrome extension fills the employer's Greenhouse, Workday, Lever, or Ashby form in 1 click. You review it and press Submit.
Similar roles
- Security Engineering ManagerViavisolutions · Chandler-HQ, AZ
- Security EngineerAegis Ai · Remote (US)
- Security EngineerInfojini Inc. · Las Vegas, NV
- Security Engineer - Network Edge SecurityBlock · Bay Area, CA
- Security EngineerMixpanel · San Francisco, CA
- Security Engineer, AWS Security Hub, Security Services (S2)Amazon Development Center U.S., Inc. · New York, NY
Common questions
Where is the Security Engineer job at Fuse located?
This Security Engineer position at Fuse is located in San Leandro, CA. Always check Fuse's application page for specific state eligibility or relocation policies.
How do I apply for the Security Engineer position at Fuse?
This listing links directly to Fuse's Ashby application page. You can apply directly on Fuse's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Ashby application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.