Senior Java Developer/Authentication Expert

Posted 2 Days Ago
Be an Early Applicant
Iași
Senior level
eCommerce • Fintech • Information Technology • Software
The Role
We are looking for a Senior Java Developer with expertise in authentication and authorization systems. Responsibilities include designing secure systems, managing Keycloak, implementing 2FA, developing RESTful APIs using Spring Boot, and conducting security assessments. The role requires strong Java proficiency and knowledge of modern security protocols.
Summary Generated by Built In

Description

We are seeking a highly skilled and experienced Senior Developer with deep expertise in authentication and authorization to join our team. The ideal candidate will have a strong background in designing, implementing, and securing authentication and authorization systems, with hands-on experience in Auth, Keycloak, JWT tokens, and modern security protocols. You will play a key role in building secure, scalable, and user-friendly authentication solutions for our applications.

Key Responsibilities:

  • Design, develop, and maintain secure authentication and authorization systems
  • Implement Auth 2.0 and OpenID Connect (OIDC) protocols for secure user authentication and authorization.
  • Configure and manage Keycloak or similar identity and access management (IAM) solutions
  • Implement and manage JSON Web Tokens (JWT) for secure token-based authentication
  • Handle token generation, validation, and expiration policies; Ensure secure storage and transmission of tokens.
  • Implement second-factor authentication (2FA) mechanisms, such as TOTP (Time-Based One-Time Password), SMS-based OTP, or hardware tokens; Integrate 2FA into existing authentication flows
  • Design and implement challenge-response authentication mechanisms for enhanced security
  • Ensure secure handling of client secrets, API keys, and other sensitive credentials
  • Develop and maintain RESTful APIs using Spring Boot
  • Implement secure and scalable backend services for authentication and authorization; ensure APls adhere to best practices for performance, security, and maintainability
  • Build reactive and non-blocking systems using Spring WebFlux or other reactive frameworks and optimize applications for high concurrency and low latency
  • Enforce security best practices for authentication and authorization, including secure password policies, encryption, and secure session management
  • Conduct security audits and vulnerability assessments for authentication systems
  • Collaborate with cross-functional teams, including product managers, security teams, and DevOps, to deliver secure and scalable solutions, also, mentor junior developers and provide technical leadership in authentication and authorization
  • Document authentication and authorization workflows, policies, and procedures
  • Ensure compliance with industry standards and regulations, such as GDPR, HIPAA, or PCI-DSS.
Requirements
  • Strong proficiency in Java and experience with modern Java frameworks and libraries
  • Strong knowledge of Auth 2.0, OpeniD Connect (OIDC), and SAML
  • Hands-on experience with Keycloak or similar IAM solutions
  • Proficiency in working with JWT tokens and understanding of token-based authentication fl (e.g., Authorization Code Flow, Implicit Flow, Client Credentials Flow)
  • Experience with second-factor authentication (2FA) and multi-factor authentication (MF)
  • Familiarity with challenge-response mechanisms and secure credential management
  • Extensive experience with Spring Boot for building RESTful APIs and strong understanding of REST API design principles and best practices.
  • Experience with Spring Security for implementing authentication and authorization
  • Proficiency in reactive programming using Spring WebFlux, Project Reactor, or similar frameworks; Experience building non-blocking, event-driven systems
  • Strong understanding of cryptographic principles, including encryption, hashing, and digital signatures; Knowledge of secure coding practices and common vulnerabilities (e.g., OWASP Top)
  • Excellent problem-solving, analytical, communication and collaboration skills
  • Ability to work independently and lead technical initiatives.

Preferred Qualifications:

  • Experience with Auth 2.1 and emerging authentication standards
  • Knowledge of FIDO2 and WebAuthn for passwordless authenticatio
  • Familiarity with DevSecOps practices and tools
  • Experience with cloud platforms, such as AWS, Azure, or Google Cloud, and their IAM services.
Benefits
  • Challenging projects in a highly professional, but also collaborative and supportive environment
  • Working in small and excellently skilled teams
  • Opportunities for your continuous professional development
  • Competitive compensation depending on experience and skills
  • Private Health Insurance options for you and your family members
  • Meal vouchers
  • Hybrid and Remote work options, with provided parking for office commuters
  • Service Recognition Awards, our way of celebrating and rewarding long-term contributions
  • Awesome Referral Bonus Program, because great people know great people
  • Team gatherings and team-building activities to foster connections, a sense of belonging and camaraderie.

Top Skills

Java
Jwt Tokens
Keycloak
Restful Apis
Spring Boot
Spring Security
Spring Webflux
Am I A Good Fit?
beta
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
HQ: Pfaffikon
251 Employees
On-site Workplace
Year Founded: 1996

What We Do

Almost 20 years of experience in distributed software engineering – starting as Switzerland’s pioneer. youngculture, enjoy.ing and NSM Engineering have now landed in the CREATEQ universe.

Within the CREATEQ Group, we have experience in software engineering using a wide range of current state-of-the-art technologies, products and frameworks. Our expertise spans the latest technologies in the fields of Java, .NET, PHP, Mobile, Web and many more. CREATEQ implements, operates and maintains custom-built solutions as well as provides open-source and commercial products and frameworks.

Similar Jobs

Iași, ROU
7674 Employees
Iași, ROU
7674 Employees
Iași, ROU
7674 Employees

Mindera Logo Mindera

Senior Java Developer

Mobile • Software
5 Locations
490 Employees

Similar Companies Hiring

True Anomaly Thumbnail
Software • Machine Learning • Hardware • Defense • Artificial Intelligence • Aerospace
Colorado Springs, CO
131 Employees
Caliola Engineering Thumbnail
Software • Machine Learning • Hardware • Defense • Data Privacy • App development • Aerospace
Colorado Springs, CO
53 Employees
Red 6 Thumbnail
Virtual Reality • Software • Hardware • Defense • Aerospace
Orlando, Florida
113 Employees

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account