Staff, Application Security Engineer

Ajaib Group; Indonesia; Remote; IDR 450,000,000 - 900,000,000; Full time

Benefits offered by this job

Performance Bonus

Private Insurance - Health coverage

Paid Time Off

Learning & Development

Hybrid Work Arrangement - Remote + (oc

Career Growth

Employee Perks

Collaborative & High-Ownership Culture

Job summary

Ajaib Group is seeking an Application Security EngineerLead to own and scale the security of our digital financial services, mobile platforms, and crypto systems. You will drive SSDLC, threat modeling, and CREST-aligned testing under the Head of Security, aligning defense with OWASP.

You will lead secure coding, vulnerability management, and security training across global engineering teams in a fully remote setup.

Qualifications

• 8+ years in information security with 3+ years leading application security in fintech, digital banking, or e-commerce.
• Strong software development background (Java, Python, Go, Node.js) and cloud-native architectures (AWS/GCP, Kubernetes, Docker).
• Deep knowledge of mobile app vulnerabilities and hands-on security tooling across GitHub, GitLab, and Bitbucket ecosystems.
• Proven ability to apply OWASP standards to web, mobile, and API layers and manage CREST-aligned testing.

Responsibilities

• Define and lead the enterprise AppSec program across engineering teams.
• Standardize security testing, code reviews, and vulnerability management around OWASP.
• Oversee SAST/DAST/IAST/SCA tools within CI/CD pipelines and drive remediation.
• Lead threat modeling efforts during product design using STRIDE and secure coding standards.
• Manage CREST-aligned external penetration testing and third-party engagements.
• Deliver developer security training and grow Security Champion networks.

Skills

AppSec Leadership

Secure coding

Threat modeling

Security training

Fintech domain knowledge

Education

CREST certifications

OSCP/OSWE/CSSLP

Tools

SAST/DAST/SCA tools

Burp Suite Pro

SonarQube

GitHub/GitLab/Bitbucket security tooling

Job description

Founded to transform retail finance, Ajaib Group is an Indonesian fintech unicorn breaking barriers to financial access. Having recently secured a $270M Series C—the single largest funding round in Southeast Asia over the past four years, we are backed by premier global investors including Y Combinator, Ribbit Capital, SoftBank, and SBI Holdings.

To build world‑class products, we assemble world‑class talent. Supported by our fully remote work arrangement, our team spans Eastern Europe, the Middle East, India, and Southeast Asia, allowing you to work with brilliant engineers and builders from around the globe from wherever you are. We operate with an impact‑driven purpose where everyone is the owner of our customers satisfaction. Driven by a growth mindset and a fierce will to win, we refuse to settle and constantly push engineering boundaries.

Role Overview

As the Application Security EngineerLead, you will serve as the primary authority for ensuring the security, resilience, and integrity of our digital financial services, mobile platforms, and crypto systems. Reporting directly to the Head of Security, you will champion secure software development lifecycle (SSDLC) practices, scale our threat modeling capabilities, and manage security testing programs. You will be responsible for aligning our application defense with the OWASP framework and managing external penetration testing in accordance with CREST standards.

Key Responsibilities

• AppSec Program Leadership: Define and implement the enterprise Application Security strategy, ensuring secure coding practices are embedded across all engineering teams
• Standardize application security testing, code reviews, and vulnerability management around OWASP Top 10, OWASP ASVS (Application Security Verification Standard), and SAMM (Software Assurance Maturity Model)
• Vulnerability & DevSecOps Management: Oversee the implementation and optimization of SAST, DAST, SCA, and IAST tools within CI/CD pipelines, triaging findings and guiding engineers on remediation. Automate SAST/DAST/SCA testing directly in developer workflows
• Threat Modeling: Lead architecture review and conduct threat modeling exercises during early product design phases using frameworks like STRIDE, and champion secure coding standards across the engineering ecosystem
• CREST-Aligned Penetration Testing: Manage the scoping, execution, and remediation tracking of external penetration tests, ensuring all third-party vendors and methodologies adhere strictly to CREST accreditation guidelines
• Developer Enablement: Design and deliver continuous secure code training programs and champion a network of Security Champions within product engineering teams

Requirements

• Experience: 8+ years of dedicated experience in information security, with at least 3+ years specifically leading application security or product security functions within fintech, digital banking, or e-commerce ecosystem
• Technical Proficiency: Strong background in software development (e.g., Java, Python, Go, Node.js) and a deep understanding of cloud-native architectures (AWS/GCP, Kubernetes, Docker)
• Mobile & Tooling Expertise: Deep technical knowledge of mobile app vulnerabilities (reverse engineering, certificate pinning, secure storage) and extensive hands‑on experience managing security tooling native to GitHub, GitLab and Bitbucket.Proficiency in SAST/DAST/SCA tools such as Chekcmarx, Semgrep, Snyk, Burp Suite Professional, and SonarQube
• OWASP Mastery: Proven track record of applying OWASP standards to web, mobile, and API layers to systematically reduce application vulnerabilities
• CREST/Testing Expertise: Clear understanding of CREST penetration testing standards; experience managing or executing CREST-accredited technical security assessments
• Certifications: Possession of CREST certifications (e.g., CREST Registered/Certified Application Security Analyst) or equivalent expert-level practical certifications (e.g., OSCP, OSWE, CSSLP) is highly preferred
• Communication: Exceptional capability to articulate complex software vulnerabilities as business risks to product owners and provide actionable technical fixes to engineers

Benefits

• Performance Bonus - Get rewarded for the impact you make
• Private Insurance - Comprehensive health coverage for you
• Paid Time Off - Take the time you need to recharge and come back stronger
• Learning & Development - Company-sponsored training, courses, and professional certifications
• Hybrid Work Arrangement - Enjoy the flexibility of working both remotely and from the office
• Career Growth - Work closely with experienced leaders and take on meaningful ownership as we scale
• Employee Perks - Enjoy exclusive discounts, partnerships, and lifestyle perks
• Collaborative & High-Ownership Culture - Work with smart, driven people in cross-functional teams, take ownership, and make a meaningful impact for our users