Sr Technical Security Engineer

This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Sr Technical Security Engineer in the United States.

As a Senior Technical Security Engineer, you will play a pivotal role in securing desktop and mobile applications across complex environments. You will be responsible for implementing best-in-class security practices, ensuring applications are resilient against emerging threats, and guiding cross-functional teams on secure development standards. This role involves hands-on work with secure coding, cryptography, authentication protocols, and OS-level hardening techniques. You will also contribute to vulnerability remediation, incident response, and embedding security into the software development lifecycle. The ideal candidate will have deep expertise in thick client architectures, mobile security, and modern cryptography. This is a fully remote opportunity, offering the chance to shape the security posture of high-impact applications.

• Implement and maintain robust security for desktop and mobile applications, covering thick client architectures and OS-level protections.
• Conduct threat modeling, secure design reviews, code reviews, and vulnerability assessments throughout the software development lifecycle.
• Embed secure coding practices across multiple programming languages and frameworks, including C++, Rust, Go, Kotlin, Swift, and C#.
• Lead incident response efforts, managing vulnerability remediation and mitigation strategies.
• Develop and maintain developer-facing security guidelines and best practices documentation.
• Collaborate with cross-functional teams to ensure security requirements are integrated into product design and delivery.
• Stay up-to-date with emerging security threats, cryptographic advances, and best practices for client application security.

• 5+ years of experience in application or product security, with a strong track record in securing desktop and mobile applications.
• Expertise in secure architecture for thick clients, local storage protection, inter-process communication, and web security standards (CSP, TLS/HTTPS, same-origin policy).
• Hands-on experience with mobile (iOS/Android) and desktop (Windows/macOS/Linux) security models.
• Proficiency in GenAI security, modern cryptography, certificate management, secure authentication (OAuth, WebAuthn, FIDO2), and secure session handling.
• Knowledge of OS hardening techniques, sandboxing, privilege separation, and secure use of platform APIs.
• Familiarity with static/dynamic analysis tools, fuzzing, penetration testing, and reverse engineering.
• Strong cross-team communication and ability to write clear, actionable security guidelines for developers.
• Experience embedding security into the software development lifecycle through threat modeling, secure design patterns, and code reviews.

• Contributions to open-source client frameworks, SDKs, or security tools.
• Experience with offline-first applications, privacy-preserving designs, and anti-tampering/DRM techniques.
• Deep knowledge of reverse engineering defenses (code obfuscation, anti-debugging, integrity checks).
• Proven leadership in security architecture for client application launches at scale.
• Advanced degree (MS/PhD) in Computer Science, Cybersecurity, or related field.

• Fully remote work flexibility within the United States.
• Competitive salary commensurate with experience.
• Opportunity to work on cutting-edge application security projects.
• Professional growth and exposure to advanced security technologies.
• Collaborative environment with a focus on knowledge sharing and innovation.

Jobgether is a Talent Matching Platform that partners with companies worldwide to efficiently connect top talent with the right opportunities through AI-driven job matching.

When you apply, your profile goes through our AI-powered screening process designed to identify top talent efficiently and fairly.

🔍 Our AI evaluates your CV and LinkedIn profile thoroughly, analyzing your skills, experience, and achievements.

📊 It compares your profile to the job’s core requirements and past success factors to determine your match score.

🎯 Based on this analysis, we automatically shortlist the three candidates with the highest match to the role.

🧠 When necessary, our human team may perform an additional manual review to ensure no strong profile is missed.

The process is transparent, skills-based, and free of bias — focusing solely on your fit for the role. Once the shortlist is completed, we share it directly with the company that owns the job opening. The final decision and next steps (such as interviews or additional assessments) are then made by their internal hiring team.

Thank you for your interest!

By submitting an application to this posting, the applicant acknowledges that Jobgether will process their personal data as necessary to evaluate their candidacy, provide feedback, and, when appropriate, share relevant information with potential employers. Such processing is carried out on the basis of legitimate interest and pre-contractual measures in accordance with applicable data protection laws. The applicant may exercise their rights of access, rectification, erasure, and objection at any time as provided under the GDPR.

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