Assistant Junior React Developer Jobs (NOW HIRING)

Company Overview:
Req ID: 386086
NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization, apply now.
We are currently seeking a Senior React Developer with Java API & Spring Boot Experience to join our team in San Leandro, California (US-CA), United States (US).
Job Description:
NTT DATA strives to hire exceptional, innovative, and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization, apply now.
We are currently seeking a Senior React Developer with Java API & Spring Boot Experience to join our team in San Leandro, California (US-CA), United States (US).
Job Description
We are seeking a highly skilled Senior React Developer with expertise in building modern, scalable, and high-performance web applications. The ideal candidate will possess strong front-end development experience with ReactJS and related technologies, along with working knowledge of Java APIs and Spring Boot to support seamless integration across enterprise platforms.
This role is primarily focused on front-end development and user experience (approximately 80%), while also requiring the ability to collaborate with backend teams and contribute to API integrations and backend enhancements (approximately 20%).
In this role, you will:
• Work on multiple enterprise applications and digital initiatives.
• Provide technical leadership and informal mentoring to junior developers.
• Develop innovative solutions based on business requirements and technical analysis.
• Participate in and lead critical projects, customer engagements, and business processes.
• Provide application-level design, technical documentation, and implementation guidance.
• Participate in establishing and maintaining application development standards and best practices.
• Effectively communicate technical direction to business stakeholders and internal IT teams.
• Advise on issues related to system integration, compatibility, scalability, performance, and platform design.
• Lead moderately complex initiatives and deliverables within technical domain environments.
• Design, code, test, debug, and document software solutions associated with enterprise applications.
• Review technical challenges and recommend appropriate solutions and technologies.
• Collaborate with Product Owners, UX Designers, and Visual Designers to develop next-generation user interfaces and web applications.
• Develop responsive, accessible, and high-performing React-based applications.
• Create reusable components, design patterns, and shared UI libraries to promote consistency and scalability.
• Collaborate closely with backend teams to design, consume, and integrate RESTful APIs.
• Support Java Spring Boot API development and enhancements as needed.
• Troubleshoot and resolve issues across UI, API, and integration layers.
• Participate in API design discussions and contribute to end-to-end solution delivery.
• Assist in implementing application security standards, authentication, and authorization mechanisms.
• Lead projects and act as an escalation point while providing guidance to less experienced team members.
• Demonstrate strong analytical, verbal, and written communication skills.
Required Qualifications
• 5+ years of Software Engineering experience.
• 4+ years of experience with modern HTML, CSS, JavaScript (ES6+), and TypeScript.
• 4+ years of experience developing enterprise web applications using ReactJS or similar modern JavaScript frameworks.
• Strong experience developing responsive, accessible, and high-performance user interfaces.
• Experience creating reusable UI components and scalable front-end architectures.
• Experience consuming and integrating RESTful APIs within React applications.
• 2+ years of experience with Java and Spring Boot development.
• Working knowledge of RESTful services, microservices architecture, and API integration patterns.
• Experience with Git-based source control and collaborative development workflows.
• Experience working within Agile/Scrum development environments.
Desired Qualifications
• Experience with ReactJS, Redux, JestJS, React Testing Library (RTL), Webpack, StorybookJS, and StencilJS.
• Experience building large-scale enterprise web applications using ReactJS.
• Experience creating near pixel-perfect implementations based on design specifications.
• Familiarity with state management solutions such as Redux, RxJS, or similar frameworks.
• Experience writing automated UI tests and supporting quality engineering practices.
• Knowledge of BDD, test automation, accessibility standards, and ADA compliance.
• Familiarity with Java Spring Boot APIs and microservices-based architectures.
• Understanding of relational databases such as Oracle, SQL Server, PostgreSQL, or MySQL.
• Knowledge of API security concepts such as OAuth2, JWT, SSO, and OpenID Connect.
• Experience with cloud platforms such as AWS, Azure, or Google Cloud Platform.
• Experience with CI/CD pipelines and DevOps practices.
• Experience using GitHub and Jira for software development and project tracking.
• Experience using browser developer tools and debugging techniques for issue resolution.
• Exposure to monitoring and observability tools such as Splunk, Dynatrace, AppDynamics, or similar.
• Experience working with Content Management Systems (CMS).
• Experience using UI/UX design tools such as Figma, InVision, or similar platforms.
• Experience mentoring developers and participating in technical design reviews.
• Financial Services or Banking domain experience preferred.
About NTT DATA
NTT DATA is a *** billion business and technology services leader, serving 75% of the Fortune Global 100. We are committed to accelerating client success and positively impacting society through responsible innovation. We are one of the world''s leading AI and digital infrastructure providers, with unmatched capabilities in enterprise-scale AI, cloud, security, connectivity, data centers, and application services.
Our consulting and industry solutions help organizations and society move confidently and sustainably into the digital future. As a Global Top Employer, we have experts in more than 50 countries. We also offer clients access to a robust ecosystem of innovation centers as well as established and start-up partners. NTT DATA is part of NTT Group, which invests over *** billion each year in R&D.
Whenever possible, we hire locally to NTT DATA offices or client sites. This ensures we can provide timely and effective support tailored to each client''s needs. While many positions offer remote or hybrid work options, these arrangements are subject to change based on client requirements.
NTT DATA recruiters will never ask for payment or banking information and will only use @nttdata.com and @talent.nttdataservices.com email addresses.
NTT DATA is an Equal Opportunity Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or protected veteran status.
About NTT DATA:
NTT DATA is a $30 billion trusted global innovator of business and technology services. We serve 75% of the Fortune Global 100 and are committed to helping clients innovate, optimize and transform for long term success. As a Global Top Employer, we have diverse experts in more than 50 countries and a robust partner ecosystem of established and start-up companies. Our services include business and technology consulting, data and artificial intelligence, industry solutions, as well as the development, implementation and management of applications, infrastructure and connectivity. We are one of the leading providers of digital and AI infrastructure in the world. NTT DATA is a part of NTT Group, which invests over $3.6 billion each year in R&D to help organizations and society move confidently and sustainably into the digital future. Visit us at us.nttdata.com
NTT DATA endeavors to make accessible to any and all users. If you would like to contact us regarding the accessibility of our website or need assistance completing the application process, please contact us at This contact information is for accommodation requests only and cannot be used to inquire about the status of applications. NTT DATA is an equal opportunity employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status. For our EEO Policy Statement, please click here. If you’d like more information on your EEO rights under the law, please click here. For Pay Transparency information, please click here.