This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Senior Software Engineer (Security) in Argentina. As a Senior Software Engineer specializing in security, you will be instrumental in designing and implementing robust security features across large-scale platforms. You will work closely with product and engineering teams to enhance platform safety, prevent abuse, and ensure resilience against emerging threats. This role emphasizes hands-on development, including coding, testing, and documentation of secure software. Your work will directly impact millions of users by protecting critical systems and maintaining trust. You will operate in a remote, collaborative environment that encourages transparency, continuous learning, and innovation. The ideal candidate combines deep security expertise with practical software engineering experience to drive operational excellence and secure product growth.

Accountabilities:

• Design, develop, and deliver security-focused features with an emphasis on user safety and system integrity
• Collaborate with engineering teams to ensure secure architectural and implementation decisions
• Lead by example in code review, technical decision-making, and fostering a culture of transparency and collaboration
• Maintain and enhance security-critical components, addressing technical debt and vulnerabilities
• Provide support for application security incidents and ongoing operational security needs
• Review, test, and deploy security features developed internally or by community contributors
• Mentor and guide less experienced engineers on security best practices and secure software development

Requirements:

• 5+ years of experience as a software engineer, with a focus on security
• Proficiency in modern PHP and JavaScript codebases
• Experience designing and implementing security features for large-scale systems
• Ability to develop proofs of concept, write design documents, and decompose complex projects into actionable tasks
• Strong understanding of secure software development, threat modeling, and security best practices
• Excellent communication skills for explaining complex security issues to technical and non-technical audiences
• Experience in remote and distributed team environments
• Nice-to-have: experience with anti-abuse mechanisms (CAPTCHA, bot detection), database and backend security, MediaWiki or similar platforms, open-source contributions, or formal security certifications

Benefits:

• Competitive compensation based on experience and location
• Fully remote work with flexible scheduling
• Opportunity to contribute to a platform impacting millions of users globally
• Collaborative and inclusive team culture
• Continuous learning and professional development opportunities
• Chance to lead and shape security practices in a high-impact, mission-driven environment