Sr. Java Developer - Authentication and Application Security

Description:
Remote

Our client seeks a Sr. Java Developer - Authentication and Application Security to lead the design and build of a custom authentication platform for a portfolio of consumer-facing websites. The role centers on identity, authentication, authorization, and application security leadership rather than traditional feature development. The consultant will guide architecture and technology selection, advise senior Java engineers, and drive implementation patterns for a secure, maintainable, and cost-effective platform as the organization evaluates transitioning away from a third-party solution. The consultant will also support migration planning, risk identification, and standards definition in collaboration with engineering, architecture, product, and senior leadership stakeholders.

Due to client requirements, applicants must be willing and able to work on a w2 basis. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.

Rate: $80.00 to $85.00/hr. w2

JN -93

Responsibilities:

• Lead the architecture and design of a custom authentication platform to replace existing solutions.
• Evaluate open-source authentication frameworks and recommend a secure and sustainable platform.
• Provide expertise across authentication, authorization, identity management, and application security.
• Partner with senior Java architects and developers to establish technical direction.
• Guide implementation using Java, microservices, Spring, and Spring Security.
• Define secure architectural patterns for user authentication across multiple websites and applications.
• Advise on SSO, federated identity, token-based authentication, one-time passwords, and passwordless options.
• Establish security standards, technical controls, and implementation guidelines.
• Identify architectural risks, vulnerabilities, scalability concerns, and operational challenges early.
• Provide practical guidance based on prior authentication-platform experience, including anti-patterns and lessons learned.
• Support evaluation and selection of supporting technologies.
• Collaborate with engineering, architecture, product, and senior leadership stakeholders.
• Assist with migration planning from the current environment to the new platform.
• Leverage approved AI-assisted development tools while maintaining security, quality, and oversight.

Experience Requirements:

• Approximately 10+ years in software engineering, application security, identity engineering, or related fields.
• Deep expertise in authentication, authorization, identity management, and application security.
• Direct experience building, architecting, implementing, or leading an enterprise authentication platform.
• Strong understanding of modern authentication standards and security practices.
• Experience with Java-based applications, microservices, and Spring technologies.
• Experience evaluating or implementing open-source authentication frameworks.
• Knowledge of Spring Security, SSO, SAML, JWT, one-time password, and passwordless authentication.
• Ability to influence architect-level engineers and design decisions.
• Ability to distinguish secure, sustainable solutions from risky or hard-to-maintain approaches.
• Strong communication skills with engineering leaders, product stakeholders, and senior management.
• Ability to work independently in a fully remote environment with a distributed team.
• Preferred: prior end-to-end design of an authentication platform and migration from commercial services.
• Preferred: experience supporting multiple high-traffic consumer websites and seasonal traffic patterns.
• Preferred: background as a senior application security engineer, identity architect, or security architect.
• Preferred: leadership of authentication-platform modernization or migration initiatives.
• Preferred: familiarity with additional modern identity standards and enterprise AI-assisted engineering tools.

Recruitment Transparency Notice



Eliassen Group values transparency in our recruitment practices. Please be advised that Eliassen Group utilizes artificial intelligence (AI) tools as part of its initial application screening and hiring process. You may receive email and SMS notifications from the Eliassen Virtual Recruiting Team (, ) inviting you to complete a brief voice screening as part of your application process. These tools assist our hiring teams in different ways, including but not limited to, assistance in reviewing application materials to help identify candidates whose qualifications most closely match the requirements of the position. All AI-assisted evaluations and responses are reviewed by human recruiters before any hiring decisions are made. The use of AI in our process is intended to support fairness, efficiency, and consistency, and Eliassen Group takes measures to prevent bias or discrimination in connection with its hiring practices. By proceeding, you acknowledge, agree, and consent to Eliassen Group's use of these tools, including AI tools, as part of the application and hiring process.

Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.

W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
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About Eliassen Group:

Eliassen Group is a strategic consulting firm that helps organizations reach further and achieve more through our technology, business advisory, and life sciences solutions. For nearly 40 years, we have combined exceptional people, deep domain expertise, and intelligent capabilities to expand our clients' capacity and accelerate meaningful outcomes. We are driven by a purpose to positively impact the lives of our employees, clients, consultants, and the communities we serve.

Eliassen is committed to building a diverse and inclusive team from a variety of backgrounds, perspectives, and skills. We are an Equal Opportunity and Affirmative Action Employer and all employment decisions are based on merit, performance, and business needs. Eliassen does not discriminate on the basis of race, color, gender identity or expression, sexual preference or orientation, sex (including pregnancy, childbirth, and related medical conditions), marital status, creed, religion, physical or mental disability, genetic information, military or veteran status, age, ancestry, national origin, citizenship status, prohibited criminal record inquiries of applicants and employees, or any other category protected by federal, state, or local laws.

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