Sr. Java Developer - Authentication and Application Security
Anywhere
Category: Development
Industry: Other
Workplace Type: Remote
Standard Hours: Open
Reference ID: JN -102026-109093
Date Posted: 10/15/2026
Shortcut: http://careers.eliassen.com/XEaqDc
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 -102026-109093
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.
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.
If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:
· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
· Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.
If you have any indication of fraudulent activity, please contact fraud@eliassen.com.
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Eliassen Group is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status. Eliassen Group’s Affirmative Action Plan (AAP) is available for inspection by any employee or applicant for employment upon request, during normal business hours of Monday through Friday, 8:30am to 5:30pm EST. Interested persons should contact Phaedra Wells at pwells@eliassen.com for assistance. It is unlawful in Massachusetts and Maryland to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
Applicants with disabilities that believe they require an accommodation or assistance with a position, please email our HR team at hradmin@eliassen.com. This email inbox is designed exclusively to assist job seekers whose disability prevents them from being able to apply online. Emails sent for other purposes will not receive a response.
Please be advised that a number of fraudulent job postings have been released under the Eliassen Group brand.
Unfortunately, fraudulent job postings can happen. If anyone reaches out to you about an open position connected with Eliassen Group, never provide personal or financial information to anyone who is not clearly associated with Eliassen Group
If anyone seemingly from Eliassen Group has ever requested this personal information in the past or does so in the future, please contact fraud@eliassen.com.
Please ensure that you are working directly with us by confirming the following:
- When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
- Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group, as indicated above