Senior Application Security Engineer

Chime Financial, Inc•San Francisco, CA

4h•$213,000 - $295,000•Hybrid

About The Position

We are looking for a Sr. Full Stack Application Security Engineer with deep expertise in mobile application security to join our Product Security team. This role is hands-on and impact driven. You will work directly with mobile, backend, and platform engineering teams to identify, prevent, and remediate security issues across our iOS, Android, API, and backend systems. You will operate close to the code and close to the product. That means reviewing architectures across the stack, influencing secure design decisions early, and helping teams ship features safely without slowing delivery. This role is for someone who understands how modern distributed systems and mobile apps are built, deployed, and attacked in real-world environments. While mobile application security is a core focus, you will be part of a team that owns security posture across the full application stack including APIs, backend services, identity and authentication flows, and CI/CD pipelines. The base salary offered for this role and level of experience will begin at $213,000 and up to $295,000. Full-time employees are also eligible for a bonus, competitive equity package, and benefits. The actual base salary offered may be higher, depending on your location, skills, qualifications, and experience.

Requirements

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, Python languages
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 (e.g., code review support, triage, threat modeling), and partner with teams building AI-enabled features to define and implement production-grade AI security controls

Benefits

Our in-office work policy is designed to keep you connected - with four days a week in the office and Fridays from home for those near one of our offices, plus team and company-wide events depending on location. Whether you’re coming in regularly or are part of our fully remote program, you’ll stay engaged with your work and teammates.
In-office perks including backup child, elder, and/or pet care, plus a subsidized commuter benefit to support your regular commute
Competitive salary based on experience
401k match plus great medical, dental, vision, life, and disability benefits
Generous vacation policy and company-wide Chime Days, bonus company-wide paid days off
1% of your time off to support local community organizations of your choice
Annual wellness stipend to use towards eligible wellness related expenses
Up to 24 weeks of paid parental leave for birthing parents and 12 weeks of paid parental leave for non-birthing parents
Access to Maven, a family planning tool, with $15k lifetime reimbursement for egg freezing, fertility treatments, adoption, and more.
In-person and virtual events to connect with your fellow Chimers—think cooking classes, guided meditations, music festivals, mixology classes, paint nights, etc., and delicious snack boxes, too!
A challenging and fulfilling opportunity to join one of the most experienced teams in FinTech and help millions unlock financial progress