Hire Freelance System Security Developers
Mark Castagneri
Mark is a risk assessor, program manager, security operations engineer, and architect with over 10 years of experience implementing risk reduction initiatives. He has a deep understanding of various security frameworks and tools. Mark has successfully developed budgets, risk-informed roadmaps, and project plans and has led multidisciplinary teams to effectively reduce risks and demonstrate compliance with standards, as confirmed by 3rd-party auditors.
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John Mbuthia, M.Sc., CISSP
John has 17+ years of experience managing all aspects of IT and cybersecurity for Fortune 500 organizations and small operations. His expertise includes risk mitigation through balanced processes and controls, BCM, GRC, IAM, security operations, third-party risk, social media brand protection, training and awareness, physical security controls, incident response table-top exercises, and vulnerability management. John has consistently created compliant environments safe from emerging threats.
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Elias Diab
Elias is a highly dedicated business, technical, and strategic information security, cybersecurity, and risk management officer, executive, consultant, advisor, expert, and specialist. With over 30 years of worldwide experience, he specializes in building, managing, and maintaining information security and cybersecurity programs designed to protect your organization's systems and assets from internal and external threats and help organizations achieve their regulatory compliance requirements.
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Nicusor Serban
Nick is a site reliability engineer who uses the best practices to enhance an app's DevOps lifecycle. He can automate everything from the code to testing, release management, deployment, operations, monitoring, and CI/CD pipelines. He's also good at bringing your entire app stack into a nice Docker stack managed by either Compose, Swarm, or Kubernetes. Nick also worked as a developer with C#, Node.js, PHP, and Python, among others.
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Rogelio Nicolas Mengual
Rogelio is a versatile, positive, and self-motivated full-stack engineer with over 15 years of experience in various programming languages, frameworks, and platforms. Rogelio enjoys taking on new challenges and constantly strives to learn new skills.
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Ivan Sedlak
Ivan has over 12 years of professional hands-on experience using a wide range of Microsoft technologies, mainly on enterprise web applications, security, internet, and serverless functions. His previous position was in a private company working as a senior .NET full-stack developer, software architect, and team leader. He has worked primarily on large-scale projects. Ivan has been working with Toptal clients since 2015.
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Yuriy Polonskiy
Yuriy is the type of developer who believes that simplicity is the highest sophistication. Along with having several years of experience, he brings an eye for detail, a considerate and measured personality, and superb communication skills. His strongest skills are in DevOps—over four years of experience—but he’s also quite good with Python, AWS, cloud technologies, among others.
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Kanwaljeet Singh
Kanwal is a cloud security architect with over a decade of experience with Azure, IT security operations, security information and event management (SIEM), information security, and vulnerability management. His expertise is backed by various cybersecurity certifications from vendors such as ISC2, Microsoft, Cisco, and Palo Alto Networks. Kanwal is currently working on projects related to the cloud and cybersecurity.
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