Security Engineer, Product Security

1 Month ago • 3 Years + • Full Stack Development

Job Summary

Job Description

As a founding member of the Product Security team, you'll mature product development workflows, harden service and application architectures, and implement a secure software development lifecycle (SDLC). Responsibilities include implementing security hardening across iOS, Android, web applications, and services; mitigating application vulnerabilities; advocating for a comprehensive SDLC; integrating security tooling into CI/CD pipelines; designing secure features; coordinating security assessments (penetration tests, bug bounty program); and architecting secure systems. Protecting cutting-edge large language models, user data, and reputation from threat actors is paramount.
Must have:
  • 3+ years in application/product security
  • Familiarity with web app/service attacks & mitigations
  • Contribute code to complex codebases
  • Implement secure SDLC in agile startup
  • Experience with cloud (GCP or AWS)
  • CI/CD workflow proficiency
  • Linux server experience
  • Secure system design at scale
  • Kubernetes familiarity
Good to have:
  • Bug bounty program management
  • Mobile app vulnerability familiarity
  • Product feature development experience
  • React/React Native, TypeScript/JavaScript, NextJS, Node.js, Python, Django, Flask, or Golang experience

Job Details

About the Role

As a founding member of our Product Security team, you will be responsible for maturing our product development workflows, hardening our service and application architectures, and implementing your vision for a secure software development lifecycle. Our user-facing web applications and services are a primary point of interest for threat actors - you will be in the vanguard, responsible for protecting our cutting-edge large language models, user data, and reputation by denying attackers any foothold in our environment. 

What you’ll do

  • Envisioning and implementing ways to holistically harden our product, including iOS and Android mobile applications, web applications, and the web services that support it all

  • Implementing framework-level mitigations for recurrent application vulnerabilities

  • Articulating and advocating for a comprehensive secure software development lifecycle

  • Integrating tooling into CI/CD pipelines to automate the secure development lifecycle

  • Hooking into product design processes to ensure new features are designed with security in mind from the start

  • Coordinating security assessments of product features, including regular penetration tests and managing our bug bounty program

Who you are

Competitive candidates will have:

  • At least 3+ years of experience in application or product security

  • Familiarity with common web application and web service attack vectors and their mitigations

  • Ability to understand and contribute code to complex codebases

  • Experience articulating and implementing a secure software development lifecycle in a fast-growing and agile startup 

  • Familiarity with cloud environments such as GCP or AWS

  • Experience with common web application frameworks and system design patterns

  • Understanding of common CI/CD-based workflows

  • Proficiency in Linux-based server environments with a high degree of comfort on the Linux CLI

  • Experience architecting secure system designs to meet product requirements at scale

  • Familiarity with Kubernetes concepts

  • A demonstrated ability to work autonomously to identify and resolve problems independently

Outstanding candidates will have one or more of the following:

  • Experience with bug bounty program management

  • Familiarity with common mobile application vulnerabilities

  • First-hand experience with product feature development

  • Familiarity with React and/or React Native, TypeScript/JavaScript, NextJS, Node.js, Python, Django, Flask, TypeScript, or Golang

  • Our interview process does not require knowledge of any one specific technology or language - these are just some of the key technologies used at Character.ai

  • Previous experience in a technology startup

  • You will be a good fit if you are proactive and have a “get things done” mindset. Given our current pace of growth and load on our systems, most people have had a significant impact during their first week at the company.

About Character.AI

Character.AI empowers people to connect, learn and tell stories through interactive entertainment. Over 20 million people visit Character.AI every month, using our technology to supercharge their creativity and imagination. Our platform lets users engage with tens of millions of characters, enjoy unlimited conversations, and embark on infinite adventures.


In just two years, we achieved unicorn status and were honored as Google Play's AI App of the Year—a testament to our innovative technology and visionary approach.


Join us and be a part of establishing this new entertainment paradigm while shaping the future of Consumer AI!

At Character, we value diversity and welcome applicants from all backgrounds. As an equal opportunity employer, we firmly uphold a non-discrimination policy based on race, religion, national origin, gender, sexual orientation, age, veteran status, or disability. Your unique perspectives are vital to our success.

Compensation Range: $150K - $300K

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About The Company

Character is one of the world's leading personal AI platforms. Founded in 2021 by AI pioneers Noam Shazeer and Daniel De Freitas, Character is a full-stack AI company with a globally scaled direct-to-consumer platform. 

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