Sr. Application Security Engineer

United StatesFull Time$130k–$190kPosted Jul 23, 2026

Mitek (NASDAQ: MITK) is a global leader in digital & biometric identity authentication, fraud prevention, and mobile deposit solutions. Our verified identity platform and advanced image capture solutions are built on the latest advancements in biometric recognition, artificial intelligence, computer vision and machine learning, and trusted by over 7,500 organizations worldwide. We are headquartered in San Diego, California, with operations in the United Kingdom, Spain, France, Mexico, and the Netherlands. Visit us at www.miteksystems.com.

We are Virtual 1st! Whether you choose to work remotely from your home office or in-person from one of Mitek’s offices, our practices, processes and tools are designed to enable your success. At Mitek, the Future of Work is about flexibility and preference wherever and whenever we are working. Because we care about our candidates, employees and customers, we include an in-person meeting as part of our hiring process. It’s one of the ways we live our mission to “Protect What’s Real.”

At Mitek, we believe that teams are more resilient, effective, and innovative when they benefit from a wide range of ideas, lived experiences, and perspectives. The strength of our organization is deeply rooted in the people who power it. We know that a workforce reflecting the richness of our communities and customers helps us better serve their needs.

This person will be the company's technical authority on the security of its software products. Bridges Information Security and Engineering — embedding security into the SDLC for a ~50-person development team building internet-hosted banking and financial software. Owns the vulnerability remediation program, builds upstream controls that prevent vulnerabilities, and serves as the AppSec authority in customer and regulatory engagements. The company invests from a position of strength — a recent penetration test returned zero findings — ahead of an expected rise in AI-assisted vulnerabilities targeting the financial sector.

Why this role now

The company is maturing its application security function from a position of strength — a recent penetration test returned zero findings — and is investing ahead of an expected increase in AI-assisted vulnerabilities targeting the financial sector. The AppSec Engineer joins with a clear mandate: own remediation of validated findings, build the secure development lifecycle that prevents future vulnerabilities, and establish the AppSec program credibility that banking customers and their regulators increasingly audit directly.

Why this role now

What You’ll Do (Essential Responsibilities)

To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

Vulnerability Remediation

Own the application vulnerability remediation program with prioritized developer guidance and clear SLAs

Work with development squads to explain findings, validate fixes, and confirm remediation

Drive systemic root-cause fixes rather than one-by-one patching; escalate unresolved criticals and highs

Secure Development Lifecycle

Define and own the SDLC — security gates and review checkpoints in sprint and release processes

Ensure SAST, DAST, and SCA tooling is configured, tuned, and producing actionable developer output

Embed security requirements into product planning and architecture decisions

Threat Modeling & Secure Design

Threat-model new features and architectural changes before code is written

Review designs for authentication, authorization, data-flow, and cryptographic risk

Produce written threat models that serve as developer guidance and audit evidence

API Security & Secure Code Review

Own API security standards — OAuth 2.0, mTLS, rate limiting, and abuse prevention

Conduct or coordinate manual secure code review of security-sensitive components

Lead application penetration-testing cycles — scoping, managing testers, validating findings

Developer Enablement

Build and run a Security Champions program across development squads

Deliver developer security training on OWASP Top 10 and secure-coding patterns

Create runbooks, coding standards, and pattern libraries developers can apply independently

This job description reflects management’s assignment of essential functions; and nothing in this herein restricts management’s right to assign or reassign duties and responsibilities to this job at any time.

Managerial Responsibilities

Non-Manager: No oversight or accountability for others, an individual contributor, however, leads Security Champions program across development squads (developer-embedded, not security headcount)

What You Need (Education/Licenses/Certifications, Experience, Knowledge, Technical Skills and Abilities)

Knowledge, skills and abilities typically gained through 5–8 years in application/product security or security-focused software engineering
Application penetration testing including business-logic and API testing
Hands-on SAST, DAST, and SCA tuning and operationalization
Secure code review across at least two web-application languages
Threat modeling using STRIDE, PASTA, or equivalent
Depth in OWASP Top 10 and API security risks; ability to influence development teams

What Would be Nice (Preferred Skills & Experience)

Financial services, fintech, or SaaS for regulated industries
Financial-sector threat knowledge — fraud, account takeover, API abuse
Cloud-native application security including container security
PCI-DSS application security requirements
OSCP, GWEB, or CSSLP
Prior experience building a Security Champions program

Success Metrics -First Year

Remediation plan for all critical/high findings within 30 days
Critical/high remediation above 90% within SLA by month six
Threat modeling applied to all major new features within 90 days
Security Champions program launched (1+ per squad) within six months
SAST and DAST tuned and developer-actionable within 60 days

What we Offer

Ownership of the AppSec function with clear scope and executive visibility
A technically interesting attack surface — internet-facing financial software, complex API integrations, and a dual US/EU regulatory context
Direct collaboration with the VP of IT and Security and Engineering leadership
A development team that is receptive to security partnership rather than treating it as an external constraint
A security program investing proactively from a position of strength — not reactive, not in crisis

We take pride in enabling career growth in an environment of innovation and teamwork. Our commitment to all Mitekians is to do meaningful work that matters. Our culture is defined by delivering our best to our customers by providing high value solutions and impactful outcomes, by continuously challenging convention, and by caring for each other through collaboration and celebrating our successes. We are committed to creating competitive, equitable compensation & benefits programs and career development opportunities.

Benefit offerings – may vary based on geographic location

Wellness: Universal, supplemental, and private healthcare plan choices based on country specifics

Financial future: retirement/pension plan contributions, MTK stock plan participation

Income protection: life event & disability coverage

Paid time off: generous annual leave, company holidays, volunteer time off

Learning: e-learning license, tuition reimbursement, hackathons

Home office setup allowance

Additional/optional benefits: pet insurance, identity theft protection, legal assistance

We sincerely appreciate your interest in Mitek. We know your time is valuable and look forward to the potential of speaking with you further!