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Lead Security Specialists are instrumental in ensuring the delivery of robust and secure software for our clients. These experts thrive in collaborative settings, engaging with diverse cross-functional teams to pinpoint and mitigate vulnerabilities in code, systems architecture, and infrastructure. With strong understanding of application security practices and a keen understanding of agile methodologies, they advocate for security integration as a fundamental aspect of software development.
Their work helps to embed a culture of security that aligns with agile and DevOps philosophies, ensuring that security measures enhance, rather than hinder, organizational objectives. By guiding teams and clients through the nuances of security automation and best practices, Application Security Specialists safeguard digital assets and champion a mindset where security and development go hand in hand.
Due to the nature of the projects and specific client security clearance , this role requires the successful candidate to be a Singapore Citizen.
Job responsibilities
- Implement and refine security automation processes, embedding security-by-design and shift-left practices throughout the software delivery lifecycle across all engineering squads via SAST/DAST integration in CI/CD pipelines.
- Build and define comprehensive security strategies tailored to our delivery methodologies and client context.
- Conduct manual and automated security code reviews, perform penetration testing, and apply security architecture principles to identify and remediate vulnerabilities alongside delivery teams.
- Serve as a consultant and advisor to both the delivery team and clients, providing expert guidance on security best practices, Singapore public sector compliance and regulatory expectations, and risk mitigation strategies.
- Work closely with delivery, DevOps and Cloud teams to identify and reduce risks associated with code development, system architecture, and infrastructure.
Job qualifications
- 7+ years of experience as a security engineer with direct involvement in working with delivery teams to identify vulnerabilities in code and systems architecture.
- Demonstrated experience with implementing security automation and familiarity with agile development methodologies.
Technical Skills
- Applied expertise in security architecture principles, manual/automated code reviews, OWASP/SANS standards, and penetration testing techniques.
- Proficiency in manual and automated penetration testing tools and techniques.
- Experience with SAST, DAST, Dependency checking, and container vulnerability assessment tools such as Checkmarx, Burp, ZAP, Fortify, Trivy, etc.
- Basic understanding of firewall, virtualization, container, networking, and OS security.
- Knowledge of cloud security best practices and basic knowledge of cloud providers like AWS, Azure and GCP.
- Knowledge and experience in password/secret management tools and techniques.
- Understanding of DevSecOps and experience in security automation.
- Basic understanding of firewall, virtualization, container, networking, and OS security.
Professional Skills
- Excellent communication and interpersonal skills, with the ability to manage relationships at senior levels of leadership.
- Strong consulting skills, including the ability to promote security awareness and influence decision-making within delivery teams.
- Ability to anticipate problems and understand the long-term implications of decisions and actions.
- Experience in developing security testing plans and integrating them into the software development lifecycle.
Other things to know
Learning & Development
There is no one-size-fits-all career path at Thoughtworks: however you want to develop your career is entirely up to you. But we also balance autonomy with the strength of our cultivation culture. This means your career is supported by interactive tools, numerous development programs and teammates who want to help you grow. We see value in helping each other be our best and that extends to empowering our employees in their career journeys.
Job Details
Country: Singapore
Location: Singapore
Date Posted: 08-12-2026
Industry: Information Technology
Employment Type: Employee
About Thoughtworks
Thoughtworks is a global technology consultancy that integrates strategy, design and engineering to drive digital innovation. For 30+ years, our clients have trusted our autonomous teams to build solutions that look past the obvious. Here, computer science grads come together with seasoned technologists, self-taught developers, midlife career changers and more to learn from and challenge each other. Career journeys flourish with the strength of our cultivation culture, which has won numerous awards around the world.
Join Thoughtworks and thrive. Together, our extra curiosity, innovation, passion and dedication overcomes ordinary.
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