Senior Security Engineer - App Sec

Quick Summary

You’re the Security Engineer that developers call for advice, and the one who opens the pull request with the fix. Hands-on, cloud-aware, and at home in a codebase.

Who we are

Kin makes life simpler, more affordable, and better for homeowners — especially in the places where climate risks, rising costs, and outdated systems make it harder. We start with smarter homeowners insurance and expand to everything homeowners need to thrive.

Using data, technology, and thoughtful human support, we’re building products that are clear, fair, and help homeowners feel confident — so homeowners aren’t left behind when they need help most.

Founded in 2016, Kin is a remote-first employer with Kinfolk across more than 35 states. We serve customers in 14 states (and counting). Our disciplined growth, strong customer satisfaction, and focus on long-term sustainability fosters outstanding growth, attracts marquee investors, and earns recognition and accolades, including:

• Built In Chicago's Best Places to Work, Midsize Companies )
• Forbes' America's Best Startup Employers (2026)
• Inc. 5000 Fastest-Growing Private Companies
• Forbes’ Fintech 50 )
• Great Places to Work Certified (May 2024-May 2027)

Most importantly, we’re building Kin to be a place where people do meaningful work with real impact — for our customers, our communities, and each other. We're excited to tell you more about how you can contribute to our rapid growth, strong unit economics, profitability, and excellent customer ratings. To learn more about how we work and what we’re building, visit  and see how we work.

The

Opportunity

We’re looking for a Sr Security Engineer with a focus on application security to help us ship fast and ship securely. Security needs to scale with engineering rather than slow it down. In this hands-on role, you’ll advise developers on secure design, review code and architecture before it ships, and get into the code yourself to fix vulnerabilities and collaborate on hardening systems at the source, across both our applications and our cloud infrastructure.

Everything in security is moving fast, and this role calls for someone who stays a step ahead. You’ll track what’s emerging across application, code, and AI security and act on it before it becomes a problem, building the tooling, automation, and relationships that scale your impact. Your work will directly strengthen the security of the platform customers trust with their data.

Your

responsibilities

• Own vulnerability remediation across engineering, driving findings to resolution and enforcing remediation SLAs
• Write and ship code to harden Kin systems, working alongside developers to resolve and prevent issues at the source
• Lead secure code reviews and architecture reviews, identifying risks early and delivering actionable recommendations
• Partner with developers on dependency and supply chain security, leading the response and hands‑on remediation when critical vulnerabilities emerge in third‑party packages
• Build security tooling and automation to scale detection, triage, and remediation
• Identify and collaborate on remediation of cloud vulnerabilities across AWS environments and Terraform‑managed infrastructure
• Proactively engage engineering teams and lead threat modeling with to surface security risks early in the development process
• Monitor emerging threats across application, code, and AI security, translating them into proactive remediation and guidance for engineering teams
• Mentor engineers on secure coding practices and drive a security‑first mindset across the organization, embedding security into day‑to‑day development

Success in this role

In your first 6–12 months at Kin, success is less about checking boxes and more about the impact you create. You’ll use your…