Lead Java Full Stack Engineer
About the Role
Cognizant is seeking an experienced Lead Java Full Stack Engineer to design, build, and support secure, scalable, cloud-native applications for a leading financial-services client. You will lead technical delivery across Java, Spring Boot, GraphQL and REST APIs, AWS-managed services, data platforms, and event-driven systems while promoting strong engineering standards from design through production support.
In This Role, You Will
· Lead end-to-end delivery of full-stack solutions using Java, Spring Boot, GraphQL, REST, and AWS-managed services.
· Drive architecture and design reviews, including service boundaries, API contracts, data models, and integration patterns.
· Develop secure, high-quality, production-grade code; conduct code reviews; and establish engineering standards.
· Build and maintain highly available, scalable services with a focus on reliability, performance, cost awareness, and maintainability.
· Implement authentication and authorization using OIDC, OAuth 2.0, JWTs, scopes, claims, and secure service-to-service patterns.
· Establish observability practices across structured logging, metrics, tracing, alerts, incident readiness, and runbooks.
· Evaluate internal and vendor solutions for architectural fit, security, scalability, and operability, and guide adoption decisions.
What You Need to Be Considered
· Advanced hands-on expertise in Java and Spring Boot, including API development, dependency injection, validation, error handling, and performance tuning.
· Strong GraphQL experience with schema design, resolvers, federation or composition patterns, query optimization, caching, and API governance.
· Strong REST API experience, including contract design, pagination, filtering, idempotency, backward compatibility, and consumer-driven evolution.
· Hands-on implementation of OIDC and OAuth 2.0 using JWTs, token flows, scopes, claims, secure session patterns, and least-privilege access controls.
· Strong AWS experience designing, deploying, and operating cloud-native applications, including IAM, networking fundamentals, logs, metrics, and alarms.
· Advanced experience with Aurora PostgreSQL, including SQL, indexing, query optimization, migrations, and transactional design.
· Experience with AWS Neptune, graph modeling, Gremlin queries, and performance considerations for graph workloads.
· Experience with Amazon MSK or Kafka, including topics, partitions, consumer groups, schema evolution, delivery semantics, idempotency, retries, dead-letter queues, and monitoring.
· Strong Git, CI/CD, and automated testing practices across unit, integration, contract, and end-to-end testing.
· Demonstrated proficiency using Claude Code and/or GitHub Copilot responsibly for development, debugging, refactoring, test generation, and documentation.
Why Choose Cognizant?
At Cognizant, we help leading organizations modernize technology, create digital products, and deliver meaningful customer experiences. You will join a collaborative engineering environment that values innovation, quality, continuous learning, and the responsible use of modern development tools.
Compensation: The annual salary for this position depends on experience and other qualifications of the successful candidate. The annual salary for this position is between $65K – $125K 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.
Why Apply?
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.
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.
Important Disclaimers
Please note: A few of our roles may require in-person interviews at Cognizant offices or client locations, depending on project or client needs.
Candidate must be legally authorized to work in the United States without the need for employer sponsorship, now or at any time in the future.
Application Deadline
Applications for this position will be accepted until 10/6/2026. Candidates are encouraged to apply as early as possible, as the posting may close sooner if a sufficient pool of qualified applicants is identified.
À savoir avant de postuler
- Autorisation de travail: Cognizant ne prendra en considération que les candidats à ce poste qui sont légalement autorisés à travailler au Canada sans avoir besoin d'un parrainage de l'employeur, aujourd'hui ou à l'avenir.
- Mesures d’adaptation: Si vous avez un handicap qui nécessite des mesures d’adaptation raisonnable pour effectuer une recherche d’emploi ou poser une candidature, veuillez envoyer un courriel à [email protected] avec votre demande et vos coordonnées.
- L’IA dans notre processus de recrutement: Nous utilisons des outils d'intelligence artificielle (IA) pour trier et évaluer les candidatures efficacement. Notre équipe examine ensuite les candidatures et décide qui passe à l’étape suivante.
- Poste à pourvoir: Sauf indication contraire, ce poste est actuellement vacant et nous cherchons à le pourvoir.
- Exigences linguistiques: Nous demandons à tous les candidats de posséder une connaissance de base de l’anglais afin de faciliter les communications internes. Pour les postes au Québec, la capacité à communiquer efficacement en anglais est requise car vous fournirez des services à et collaborerez avec des parties prenantes anglophones situées hors de la province.
- Inclusion: Cognizant est un employeur souscrivant au principe de l’égalité d’accès à l’emploi. Votre candidature et votre dossier ne seront pas examinés en fonction de la race, de la couleur, du sexe, de la religion, des croyances, de l'orientation sexuelle, de l'identité de genre, de l'origine nationale, du handicap, des renseignements génétiques, de la grossesse, du statut d'ancien combattant ou de toute autre caractéristique protégée par les lois fédérales, provinciales ou locales.
À propos de Cognizant
Cognizant (NASDAQ: CTSH) est un AI Builder et une entreprise de services numériques (ESN) élaborant des solutions complètes d’IA maximisant les investissements pour des résultats concrets. Sa profonde expertise des métiers, des processus et des technologies lui permet d’intégrer dans les systèmes technologiques le contexte unique de chaque organisation de l’ingénierie à la production à l’échelle. Son objectif: améliorer l’efficacité des équipes, créer de la valeur et permettre aux grandes entreprises de rester performantes dans un monde qui évolue rapidement. Pour en savoir plus: cognizant.ai ou @cognizant.
