C

Chime

Runs a mobile banking app with no monthly fees

Senior Application Security Engineer

Security Engineering & ArchitectureConfirmed live in the last 24 hours
Full-timeSan Francisco, CA, USA

About the Job

Requirements

  • At least 5 years of experience in application security, with strong hands-on experience across both mobile and backend systems.
  • Hands-on experience securing iOS and Android applications in production environments.
  • Strong understanding of mobile threat models and common attack techniques.
  • Experience with mobile security testing techniques, including static and dynamic analysis.
  • Familiarity with iOS and Android platform security features and limitations.
  • Practical coding experience, preferably in Ruby, Go, or Python.
  • Ability to clearly communicate security risks, tradeoffs, and remediation guidance to engineering partners.

Responsibilities

  • Build and improve security capabilities, automation, and guardrails for mobile applications and backend/API services.
  • Perform application or API/backend penetration testing.
  • Identify, triage, and help remediate vulnerabilities across Chime products.
  • Partner closely with engineering and product teams to embed security into the development lifecycle across mobile apps, APIs, and backend services.
  • Perform architecture and code reviews across the stack (iOS/Android, APIs, backend) with a focus on secure data storage, authentication, authorization, secure communication, and session/token handling.
  • Leverage AI to accelerate security workflows, such as code review support, triage, and threat modeling, and partner with teams building AI-enabled features to define and implement production-grade AI security controls.

About the Company

Chime

Runs a mobile banking app with no monthly fees

Chime runs a mobile banking app for everyday Americans, with accounts held at federally insured banks and no monthly or overdraft fees. It made its name by releasing direct-deposit paychecks up to two days early, and in 2019 it introduced SpotMe, which covers small overdrafts without a fee. Members spend with a Visa debit card or the Chime Card, a credit card backed by their own deposits that builds credit, and get part of their pay before payday through MyPay. Chime makes most of its money from the swipe fees merchants pay when members use its cards, plus charges and interest on instant transfers, pay advances, and small loans. Chime was founded in 2012 and is based in San Francisco, California.

Company size
1,001-5,000
Company stage
IPO
Headquarters
San Francisco, CA
Founded
2012

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