Senior Full Stack Java Developer (React & Node.js) - Hybrid

About the role

In this role, you will lead end-to-end technical solution design by applying deep expertise in core Java, Spring Boot, Spring Core, React.js, Node.js and REST web services to deliver robust and scalable enterprise applications in a hybrid work environment.

You will:

• Oversee development activities by translating business requirements into efficient technical implementations using PL/SQL, MySQL and core Java that consistently meet performance, security and maintainability objectives.
• Provide guidance to developers on application architecture patterns by promoting modular design, code reuse and clean coding practices that enable long-term sustainability and easier feature expansion.
• Drive integration of backend services and APIs by designing and implementing REST web services that support seamless communication between distributed systems and external platforms while ensuring reliability.
• Ensure front-end excellence by coaching the team on building responsive and accessible user interfaces with React.js that improve user satisfaction and align with modern hi‑tech product standards.
• Manage backend service reliability by optimizing Spring Boot-based microservices and Node.js components to achieve stable performance, efficient resource utilization and straightforward observability.
• Promote secure and resilient deployments by using Linux-based environments, configuration management and scripting to streamline builds, automate deployments and reduce manual errors in day-to-day operations.
• Coordinate code reviews and quality assurance activities by enforcing consistent coding standards, comprehensive unit and integration testing and timely defect resolution that collectively raise overall product quality.
• Collaborate with cross-functional stakeholders by providing clear technical input on solution trade-offs, estimations and implementation plans so that project timelines and business outcomes remain predictable and achievable.
• Optimize data access layers by designing PL/SQL, MySQL structures, queries and procedures that improve application throughput, minimize latency and sustain data integrity for complex transactional workloads.
• Drive continuous improvement initiatives by evaluating new frameworks, libraries and development practices within the hi‑tech domain and recommending pragmatic adoption paths that enhance engineering effectiveness.
• Support operational stability by analyzing production issues, performing root-cause investigations and implementing durable fixes that reduce recurring incidents and improve overall customer experience.
• Mentor team members by sharing practical insights, design patterns and troubleshooting techniques that accelerate skill development and contribute to a culture of technical excellence and shared ownership.

Location & Work model

Location: New York, NY, USA

Work model: Hybrid

We believe hybrid work is the way forward as we strive to provide flexibility wherever possible. Based on this role’s business requirements, this is a hybrid position requiring 3 days a week in a client or Cognizant office in New York, NY. Regardless of your working arrangement, we are here to support a healthy work-life balance through our various wellbeing programs.

What you need to have

• Possess strong hands-on proficiency in core Java, Spring Boot, Spring Core, REST web services and PL/SQL, MySQL with demonstrable experience in designing and delivering complex enterprise systems over several years.
• Demonstrate practical experience with React.js and Node.js by building scalable front-end and backend components that integrate securely with APIs and data services in hybrid deployment environments.
• Apply solid understanding of Linux operating environments by using command-line tools, scripting and basic system administration practices to support reliable application deployments and monitoring.
• Bring prior exposure to hi‑tech or similar technology-driven domains where product reliability, performance and innovation are critical, enabling quick alignment with strategic business objectives.
• Show capability in modern development practices such as version control, automated testing and continuous integration so that team workflows remain efficient, transparent and consistently productive.

Salary & Benefits

Applications will be accepted until 9/15/2026. The annual salary for this position is between $46,000 – $93,500, depending on experience and other qualifications of the successful candidate. This position is also eligible for Cognizant’s discretionary annual incentive program, based on performance and subject to the terms of Cognizant’s applicable plans.

Cognizant offers the following benefits for this position, subject to applicable eligibility requirements:

• Medical, Dental, Vision and Life Insurance
• Paid holidays plus Paid Time Off
• 401(k) plan and contributions
• Long-term/Short-term Disability
• Paid Parental Leave
• Employee Stock Purchase Plan

Disclaimer: The salary, other compensation and benefits information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.