Application Security Engineer (Fintech)

TL;DR

Application Security Engineer: Designing and building secure applications, performing security assessments, and leading penetration testing for a global financial super app. Focus on securing mobile apps, web applications, and APIs, validating bug bounty submissions, and integrating security into the SDLC.

Location: Remote from Poland, Portugal, Romania, Spain, or UAE; or Onsite in Dubai, Krakow, Lisbon, or Madrid

Salary: PLN20,200 - PLN29,100 gross monthly (Poland/Krakow)

Company

hirify.global is a financial super app helping 65+ million customers with spending, saving, investing, and more, fostering a diverse and inclusive culture.

What you will do

• Perform security assessments on product designs, mobile apps (iOS/Android), web applications, and APIs.
• Participate in Red Team missions and threat-led testing scenarios.
• Lead and conduct penetration testing across applications, infrastructure, and APIs.
• Manage and evolve the private bug bounty programme, validating submissions and ensuring timely resolution.
• Contribute to and influence cloud security posture across GCP and AWS environments.
• Partner with engineering teams to embed security into the software development lifecycle.

Requirements

• 3+ years of hands-on experience in application security, penetration testing, or a related security engineering role.
• Solid understanding of common web, mobile, and API vulnerabilities (e.g., OWASP Top 10, CWE).
• Experience conducting code reviews, design reviews, and threat modeling for modern application architectures.
• Familiarity with DevSecOps practices and integrating security tooling into CI/CD pipelines.
• Working knowledge of authentication, authorization, session management, and cryptographic best practices.
• Proficiency with security tools such as Burp Suite, MobSF, Frida, or custom scripts.

Nice to have

• Experience participating in Red Team exercises.
• Managing bug bounty programmes.
• Contributing to open-source security tools or research.

Culture & Benefits

• Certified as a Great Place to Work™.
• Multicultural, hard-working team of 10,000+ people globally.
• Commitment to an inclusive workplace and diverse talent.
• Opportunity to build innovative products and services.