Freelance Java Backend Developer Jobs in Denton, TX

Senior Backend Developer:

The Senior Backend Developer is responsible for developing a robust collection of connected and complementary technical solutions that deliver an enterprise scale framework that serves hundred-thousands of clients and millions of web requests every day. The platform establishes an interconnected experience for both internal and external users by seamlessly integrating existing applications.

Key Responsibilities:

• As a Senior Backend Developer, you will be a hands-on technical contributor responsible for the design, architecture, and implementation of critical backend services within this integrated digital experience platform. Your expertise will contribute to the development of highly scalable, secure, and resilient solutions.

• Hands-on Development: Design, develop, and maintain high-performance, fault-tolerant backend services and APIs using modern programming languages and frameworks. This includes core components for user authentication, authorization, content routing, and data integration.

• Security: Implement and enforce robust security measures, including single sign-on (SSO), centralized entitlements, and adherence to cyber defense standards across all backend components.

• Performance Engineering: Optimize backend systems for speed and efficiency, incorporating caching strategies, asynchronous processing, and efficient data access patterns.

• Integration Design: Design and implement solutions for integrating diverse Content Provider applications into the unified platform via HTTPS-based interfaces.

• Troubleshooting & Problem Solving: Serve as a subject matter expert for complex production issues, leading root cause analysis and resolution efforts for critical backend services.

• Collaboration: Partner closely with product management, front-end teams, architects, and infrastructure teams to translate business requirements into technical solutions and deliver features end-to-end.

• Compliance: Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency.

Recommended Qualifications:

• 3-6 years of extensive experience in backend software development, with significant experience in architecting and contributing to complex, large-scale enterprise platforms.

• Demonstrated experience in a Senior Developer role, with a strong track record of technical contribution.

• Proficiency in modern Java backend programming language and associated frameworks.

• Understanding and practical experience with distributed systems, microservices architectures, and RESTful API design.

• Proven experience with identity and access management (IAM) solutions, including SSO protocols (e.g., OAuth2, OpenID Connect) and fine-grained authorization.

• Experience with cloud-native development principles, containerization (Docker), orchestration (Kubernetes), and Cloud Adoption (GCP and AWS).

• Good knowledge of database technologies.

• Good problem-solving and analytical skills, with the ability to tackle ambiguous problems and drive solutions.

• Good communication, presentation, and interpersonal skills, capable of influencing technical decisions and collaborating effectively across diverse teams.

• Hands-on experience with the other Backend technologies: Unix, Oracle, Any caching solutions and any AI adoption.

• Good knowledge on the Frontend integration is a plus: ReactJS, Content Security Policy, Adopting Corporate Design System, ADA Compliance.

Education:

• Bachelor’s degree/University degree or equivalent experience

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In addition to salary, Citi’s offerings may also include, for eligible employees, discretionary and formulaic incentive and retention awards. Citi offers competitive employee benefits, including: medical, dental & vision coverage; 401(k); life, accident, and disability insurance; and wellness programs. Citi also offers paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and paid holidays. For additional information regarding Citi employee benefits, please visit citibenefits.com. Available offerings may vary by jurisdiction, job level, and date of hire.

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We use automated processing, including artificial intelligence, for our legitimate business interests (or our reasonable and appropriate business purposes) to identify and align the candidate's skills and abilities with a specific job opening. Additionally, if you so choose, or consent, we can match your skills and abilities to other suitable roles at Citi.

Importantly, all our hiring processes and decisions, including determining your suitability for a role, are conducted, checked, and decided by individuals. Our automated processing and AI do not involve relying on automatic or autonomous decision-making. Please refer to any Jurisdictional Considerations, with specific provisions for your country (where relevant) for further details.

Illinois residents – AI Notice and Right

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Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.
View Citi’s EEO Policy Statement and the Know Your Rights poster.