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Staff Security Engineer

JellyfishUnited StatesSecurity
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Salary
$185K – $270K
Job type
Full-time
Work mode
Remote
Experience
Senior
Posted
8 Oct 2026
Status
Open · checked 7d ago

About this role

This role suits an experienced security professional with a strong background in application security and AI governance who wants to lead security engineering at a growing software intelligence firm in the United States. The Staff Security Engineer position at Jellyfish places an individual in charge of defining the security vision, strategy, and roadmap for the organization.

Role Overview

The Staff Security Engineer serves as the primary technical authority for security at Jellyfish across the United States. The professional in this position handles the creation and scaling of the security engineering program while remaining hands-on with writing code and building security features.

Key Responsibilities

Own and direct the strategic security roadmap in alignment with business objectives and risk mitigation goals.
Design and mandate resilient security architectures across the core platform, product ecosystem, and infrastructure.
Implement and govern the Secure Development Lifecycle company-wide with automated threat modeling and continuous risk assessments.
Partner with data science and engineering teams to establish secure development practices for AI tools and features.
Direct threat modeling for artificial intelligence and machine learning ecosystems to address data leakage, prompt injection, and data poisoning.
Build automated remedial workflows, vulnerability management solutions, and software composition analysis tools.
Mentor engineers, guide executive leadership on security posture, and direct incident response for critical security events.

Requirements

Proven history of building and scaling application security programs within SaaS or startup environments.
Technical expertise in software engineering languages such as Python, JavaScript, TypeScript, Rust, or C/C++.
Knowledge of security challenges related to artificial intelligence and large language models.
Ability to influence engineering leadership and operate autonomously within a distributed team.
Eligibility to work in the United States for any employer without visa sponsorship.

Nice to Have

Experience with the Jellyfish technology stack including Python, Django, Postgres, AWS, Terraform, CircleCI, GitLab, GitHub Actions, Semgrep, and LLVM.
Contributions to open-source security projects or industry working groups like OpenSSF or Mozilla.
Prior experience leading security at a high-growth startup organization.

Skills and Tools

Python
JavaScript
TypeScript
Rust
C/C++
Django
Postgres
AWS
Terraform
CircleCI
GitLab
GitHub Actions
Semgrep
LLVM

Salary and Benefits

Salary range between $185,000 and $270,000 per year
Equity offerings included

About the Company

Jellyfish provides an intelligence platform for AI-integrated engineering that assists over 1,000 companies in tracking and improving software delivery and planning. Clients utilize the platform to gain insights into R&D data and improve decision-making.

How to Apply

Interested candidates should apply directly on the official Jellyfish careers page.

Skills and tech stack

Questions candidates ask

What is the salary range for the Staff Security Engineer role?

The salary ranges from $185K to $270K per year, with equity offerings included.

Where is the position located?

The position is located in the United States, with a preference for candidates in the EST or CST time zones.

Does Jellyfish provide visa sponsorship?

No, Jellyfish is unable to sponsor or take over sponsorship of an employment visa at this time, and applicants must be authorized to work for any employer in the U.S.

What kind of experience is required for this position?

Candidates need an extensive track record of owning and scaling application security programs in SaaS or startup environments, along with deep technical expertise in software engineering and AI security challenges.

Ready to apply?

The application is on the official Jellyfish careers page.

Apply on company site