# Senior Security Engineer

**Company:** [Upstart](https://hotfix.jobs/companies/upstart)
**Location:** Remote
**Role:** Security Engineering
**Salary:** $165k – $228k/yr
**Skills:** Threat Modeling, Kubernetes, Ai/Ml Security, Security Automation, Code Development, Security Reviews, Root Cause Analysis, Security Orchestration, Prompt Injection Mitigation, Architecture Assessments
**Posted:** 2026-04-08

> Senior Security Engineer builds software solutions and tools to mitigate risks, conducts security reviews and threat modeling, and leads incident response while mentoring teams to elevate organizational security maturity.

## Job Description

## How you’ll make an impact
- Architect and build software solutions (Workflows, Services, and internal tools) that accelerate security
- Elevate security maturity across the organization by mentoring engineers, influencing leadership through clear risk metrics, and fostering a culture where security enables innovation
- Continuously improve systems by learning from real-world signals such as false positives, operational feedback, and evolving threats
- Serve as a senior technical authority during high-severity incidents, driving root cause analysis and durable architectural improvements

## What we’re looking for

### Minimum requirements
- Proven track record of owning security initiatives end-to-end, including post-launch validation, monitoring, and iterative improvement
- Experience performing security reviews (e.g., design reviews, threat modeling, architecture assessments) and driving actionable outcomes
- Demonstrated ability to identify, investigate, and remediate complex security issues across one or more domains
- Experience developing code and building services to enhance unique security needs
- Demonstrated ability to leverage AI-assisted tools (e.g., code generation, analysis, or investigation tools) to improve productivity while maintaining security and quality standards

### Preferred qualifications
- Experience working with diverse data domains (e.g., analytics, reporting, business operations, or people data)
- Experience assessing security risks in AI/ML systems (e.g., prompt injection, model misuse, data poisoning, access control around models)
- Experience building applications hosted in a **Kubernetes** environment
- Experience with security orchestration tools for automating processes that are adopted beyond a single team
- Experience partnering with Legal, Risk, Compliance, and Audit teams to operationalize security controls in regulated environments

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**Apply:** https://hotfix.jobs/jobs/811813c9-cca6-4427-bc1d-3dd7c22618a1
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