Freelance Java Backend Developer Jobs in Duluth, GA

At NTT DATA, we know that with the right people on board, anything is possible. The quality, integrity, and commitment of our employees have been key factors in our company's growth and market presence. By hiring the best people and helping them grow both professionally and personally, we ensure a bright future for NTT DATA and for the people who work here.
For more than 25 years, NTT DATA Services have focused on impacting the core of your business operations with industry-leading outsourcing services and automation. With our industry-specific platforms, we deliver continuous value addition, and innovation that will improve your business outcomes. Outsourcing is not just a method of gaining a one-time cost advantage, but an effective strategy for gaining and maintaining competitive advantages when executed as part of an overall sourcing strategy.
NTT DATA's Client is seeking a Core Java and UI Developer Expert to design, develop, enhance, and maintain enterprise applications using Core Java and modern UI technologies.
· Build scalable backend services and APIs using Java, Spring Boot, RESTful services, and microservices-based architecture patterns.
· Develop responsive, reusable, and high-performing user interfaces using React.js, Angular, JavaScript/TypeScript, HTML5, and CSS3.
· Integrate UI components with backend services and APIs, ensuring reliable data flow, error handling, security, and performance.
· Apply object-oriented design principles, design patterns, multithreading/concurrency concepts, collections, exception handling, and performance tuning in Java solutions.
· Participate in application architecture, technical design, code reviews, estimation, sprint planning, and solution discussions with engineering and product teams.
· Write clean, maintainable, testable, and secure code with appropriate unit, integration, and UI automation coverage.
· Troubleshoot complex application and production issues across UI, API, service, and database layers and drive root-cause resolution.
· Contribute to CI/CD pipelines, automated builds, code-quality checks, release processes, and deployment readiness.
· Collaborate with architects, product owners, business analysts, QA engineers, DevOps teams, and other developers in an Agile delivery model.
· Work on-site 3 days per week at the assigned Atlanta, New Jersey, or Dallas office to support team collaboration and Agile ceremonies.
Basic Qualifications (Required Skills and Minimum Experience)
· Minimum 8+ years of overall software application development experience.
· Minimum 6+ years of hands-on Core Java development experience, including Java 8+ features, collections, concurrency/multithreading, exception handling, JVM fundamentals, and object-oriented design.
· Minimum 4+ years of hands-on UI/front-end development experience using React.js and/or Angular with JavaScript/TypeScript, HTML5, and CSS3.
· Minimum 4+ years of experience developing enterprise backend services using Spring, Spring Boot, RESTful APIs, and microservices.
· Minimum 3+ years of experience integrating front-end applications with REST APIs and distributed backend services.
· Minimum 3+ years of experience with relational databases and SQL; experience with ORM frameworks such as Hibernate/JPA.
· Minimum 3+ years of experience with Git-based source control, CI/CD pipelines, automated builds, unit testing, and code-quality practices.
· Strong understanding of application security, authentication/authorization, secure coding practices, and production-grade error handling.
· Demonstrated experience with performance optimization, debugging, root-cause analysis, and production support for enterprise applications.
· Experience working in Agile/Scrum teams and collaborating across architecture, engineering, QA, and product functions.
· Ability and willingness to work on-site 3 days per week in Atlanta, New Jersey, or Dallas (mandatory).
Degree
· Bachelor's degree in Computer Science, Engineering, Information Technology, or a related field; equivalent practical experience may be considered.
Nice to Have (But Not a Must)
· Experience in banking, payments, financial services, or another regulated enterprise environment.
· Cloud development experience with AWS, Azure, or Google Cloud Platform and container technologies such as Docker and Kubernetes.
· Experience with messaging/event-driven platforms such as Kafka or similar technologies.
· Knowledge of UI state-management frameworks, component libraries, accessibility standards, and front-end performance optimization.
· Experience with observability and monitoring tools and supporting highly available, transaction-intensive applications.
· Technical leadership, mentoring, or lead-developer experience across distributed onshore/offshore teams.
What We're Looking For
· An expert engineer who can work across the Java backend and modern UI layers and translate solution designs into high-quality production code.
· A strong problem solver who can independently analyze complex technical issues and drive pragmatic solutions.
· A collaborative team member who communicates clearly, contributes to technical decisions, and supports engineering best practices.
· An engineer comfortable working in a hybrid, in-office delivery model and partnering with geographically distributed teams.
About NTT DATA Services:
NTT DATA Services is a recognized leader in IT and business services, including cloud, data and applications, headquartered in Texas. As part of NTT DATA, a $30 billion trusted global innovator with a combined global reach of over 80 countries, we help clients transform through business and technology consulting, industry and digital solutions, applications development and management, managed edge-to-cloud infrastructure services, BPO, systems integration and global data centers. We are committed to our clients' long-term success. Visit nttdata.com or LinkedIn to learn more.
NTT DATA Services is an equal opportunity employer and considers all applicants without regarding to race, color, religion, citizenship, national origin, ancestry, age, sex, sexual orientation, gender identity, genetic information, physical or mental disability, veteran or marital status, or any other characteristic protected by law. We are committed to creating a diverse and inclusive environment for all employees. If you need assistance or an accommodation due to a disability, please inform your recruiter so that we may connect you with the appropriate team.
Where required by law, NTT DATA provides a reasonable range of compensation for specific roles. The starting hourly range for this remote role is ($x - x/hourly ). This range reflects the minimum and maximum target compensation for the position across all US locations. Actual compensation will depend on several factors, including the candidate's actual work location, relevant experience, technical skills, and other qualifications.
This position is eligible for company benefits that will depend on the nature of the role offered. Company benefits may include medical, dental, and vision insurance, flexible spending or health savings account, life, and AD&D insurance, short-and long-term disability coverage, paid time off, employee assistance, participation in a 401k program with company match, and additional voluntary or legally required benefits.