Security Developer
New York, NY, 10019
Apply now: Sr. Security Developer, location is Remote. The start date is ASAP for this 3–6+ month contract position with potential extension or conversion.
Job Title: Sr. Security Developer
Location-Type: Remote
Start Date Is: ASAP
Duration: 3–6+ months (Contract, potential extension/conversion)
Compensation Range: $75-82/hr on W2
Benefits: Eligible for Health, Dental, Vision, 401K
Must be authorized to work in the U.S. This position is not eligible for sponsorship.
Job Description:
Seeking a hands-on Security Developer with deep authentication and application security expertise to design, build, and implement a secure, scalable authentication platform supporting approximately 30 million users.
Day-to-Day Responsibilities:
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Partner with senior architects and developers to design and build a custom authentication platform.
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Evaluate authentication frameworks, security standards, and architectural approaches.
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Provide expertise across JWT, SSO, SAML, API security, passkeys, OTP, and related authentication technologies.
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Independently write, review, test, and deploy production-quality code.
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Identify security vulnerabilities, scalability concerns, and architectural risks.
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Leverage AI-assisted development tools while validating code quality, security, and testing.
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Recommend secure, sustainable solutions and provide guidance on architectural decisions.
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Develop a functional MVP and demonstrate measurable progress within the first 30–60 days.
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Support future integrations and migration from an existing third-party authentication provider.
Minimum Requirements:
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5+ years of relevant experience, ideally 7–10 years, in software development, authentication, identity engineering, or application security.
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Deep, hands-on expertise in authentication systems and application security.
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Experience designing, building, implementing, or modernizing authentication/identity platforms.
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Strong understanding of authentication protocols such as JWT, SSO, SAML, passkeys, OTP, or similar technologies.
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Strong software development background with the ability to independently write, review, test, and deploy code.
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Proficiency in Java or another development language, such as Python, paired with exceptional security expertise.
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Ability to evaluate architecture, identify security vulnerabilities, and recommend scalable solutions.
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Builder's mindset with demonstrated ability to take projects from concept to functional implementation.
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Strong communication skills and ability to collaborate with senior technical stakeholders.
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Ability to work independently in a remote, small-team environment.
Preferred Qualifications:
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Java, Spring Framework, or Spring Security experience.
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Experience building an authentication platform from scratch.
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Experience migrating away from third-party authentication providers.
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Experience supporting large-scale, high-traffic consumer applications.
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Google Cloud Platform (GCP) experience.
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Familiarity with microservices and open-source authentication frameworks.
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Experience with AI-assisted coding tools such as Codex.
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Security certifications or relevant credentials.
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