Sr. Java/React FSE, Jersey City, New Jersey, United States

About the role

As a Senior Full Stack Engineer, you will provide technical leadership across the full software development lifecycle, driving architectural decisions, establishing engineering best practices, and ensuring the successful delivery of production-grade applications leveraging React, Java Spring Boot, GraphQL/REST APIs, AWS services, and modern event-driven architectures.

In this role, you will:

· Lead the end-to-end delivery of full stack applications using React, Java Spring Boot, GraphQL/REST APIs, AWS services, and event-driven technologies.

· Define and review application architecture, API contracts, service boundaries, data models, and integration patterns.

· Develop secure, high-quality, maintainable code while promoting engineering excellence through code reviews and technical mentorship.

· Design and support highly available, scalable, and performant systems with strong operational and reliability standards.

· Implement secure authentication and authorization solutions using OAuth2, OIDC, JWTs, and service-to-service security patterns.

· Establish observability practices including logging, monitoring, tracing, alerting, and operational runbooks.

· Collaborate closely with Product, UX, and business stakeholders to translate requirements into technical solutions and delivery plans.

· Evaluate internal and third-party technology solutions and provide recommendations based on scalability, security, maintainability, and business fit.

· Drive continuous improvement initiatives focused on automation, testing, deployment practices, and operational excellence.

· Promote adoption of modern engineering practices, including AI-assisted development tools and cloud-native technologies.

Work model: Hybrid

We believe remote work is the way forward as we strive to provide flexibility wherever possible. Based on this role’s business requirements, this is a remote position requiring 3 days a week in a client or Cognizant. Location: Jersey City, NJ

Please note: A few of our roles may require in-person interviews at Cognizant offices or client locations, depending on project or client needs.

The working arrangements for this role are accurate as of the date of posting. This may change based on the project you’re engaged in, as well as business and client requirements. Rest assured; we will always be clear about role expectations.

What you need to have to be considered:

· Bachelor’s degree in computer science, Engineering, Information Technology, or a related field, or equivalent work experience.

· 8+ years of experience designing, building, and supporting enterprise-scale software applications.

· Proven experience providing technical leadership, owning solution design, and guiding engineering teams.

· Strong expertise in React, including TypeScript, component architecture, state management, responsive design, and performance optimization.

· Deep experience developing applications using Java and Spring Boot frameworks.

· Hands-on experience designing and implementing GraphQL APIs, including schema design, performance optimization, and governance practices.

· Strong understanding of REST API design standards, versioning, backward compatibility, and API lifecycle management.

· Experience implementing authentication and authorization solutions using OAuth2, OpenID Connect (OIDC), JWTs, scopes, and claims-based security.

· Hands-on experience building and operating cloud-native solutions within AWS environments.

· Strong knowledge of AWS services, IAM, networking fundamentals, monitoring, logging, and operational tooling.

· Experience working with relational databases, including PostgreSQL/AWS Aurora PostgreSQL, covering query optimization, indexing, data modelling, and migration strategies.

· Experience working with graph databases such as AWS Neptune, including graph modelling and query optimization.

· Strong understanding of event-driven architectures and messaging platforms such as AWS Managed Streaming for Apache Kafka (MSK).

· Experience implementing CI/CD pipelines, automated testing frameworks, code quality controls, and modern release practices.

· Demonstrated proficiency using AI-assisted engineering tools such as GitHub Copilot and/or Claude Code to enhance software development productivity while maintaining quality, security, and compliance standards.

*Please note, this role cannot offer visa transfer or sponsorship now or in the future*

These will help you stand out:

· Infrastructure as Code (Terraform, AWS CloudFormation, or AWS CDK).

· Containerization and orchestration technologies such as Docker, Amazon ECS, or Amazon EKS.

· Application security practices, including threat modelling, secrets management, dependency management, and OWASP security principles.

· API governance, platform engineering standards, service templates, reliability engineering, and SLO/SLI frameworks.

· Oracle HCM integrations and enterprise HR technology ecosystems.

We're excited to meet people who share our mission and can make an impact in a variety of ways. Don't hesitate to apply, even if you only meet the minimum requirements listed. Think about your transferable experiences and unique skills that make you stand out as someone who can bring new and exciting things to this role.

Salary and compensation:

The annual salary for this position will be between $80,000 to $141,000 per year depending on the experience and other qualifications of the successful candidate. This position is also eligible for Cognizant’s discretionary annual incentive program and stock awards, based on performance and subject to the terms of Cognizant’s applicable plans.

Applications will be received by August 7^th, 2026.

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

· Medical/Dental/Vision/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.

Sobre a Cognizant
Cognizant (NASDAQ: CTSH) é uma construtora de IA e fornecedora de serviços de tecnologia, criando a ponte entre o investimento em IA e o valor para as empresas por meio do desenvolvimento de soluções de IA completas para nossos clientes. Nossa profunda experiência em setores, processos e engenharia nos permite incorporar o contexto único de cada organização em sistemas tecnológicos que potencializam a capacidade humana, geram resultados tangíveis e mantêm empresas globais à frente em um mundo em rápida transformação. Saiba mais em cognizant.ai ou @cognizant.

A Cognizant é uma empregadora que investe em equidade. Sua candidatura não será pautada em raça, cor, gênero, sexualidade, credo, origem, deficiência, gravidez ou qualquer outra característica protegida pelas leis brasileiras.

Informações adicionais de emprego
Os candidatos podem ser obrigados a comparecer a entrevistas presenciais ou por videoconferência. Além disso, os candidatos podem ser obrigados a apresentar seu documento de identificação emitido pelo estado ou governo atual durante cada entrevista.

Embora nosso sistema permita a candidatura em todos os idiomas, o(s) idioma(s) e o(s) nível(is) de proficiência exigidos para o trabalho variam. No entanto, é necessário um nível básico de inglês para fins de comunicação em toda a empresa.

Se você tem uma deficiência que requer adaptações razoáveis para procurar uma vaga de emprego ou enviar uma candidatura, envie um e-mail para [email protected] com sua solicitação e informações de contato.