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StaffXpert LLC Logo
Sr. Full Stack Software Engineer

StaffXpert LLC

 

Jersey City, NJ, USA

Posted On: 7 days ago
Experience: 12+ years
Availability: Hybrid
Openings: 1
Category: Sr Full Stack Software engineer
Tenure: Contract - Corp-to-Corp
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Description

Leads end-to-end delivery of full stack solutions using React, Java Spring Boot, and AWS, owning architecture, security, and operational excellence.

This role is on-site.

Responsibilities

  • Design and build scalable microservices and UIs using React, TypeScript, Java Spring Boot, and GraphQL/REST.
  • Define service boundaries, API contracts, data models, and integration patterns for complex systems.
  • Implement secure authentication/authorization using OIDC/OAuth2, JWTs, and least-privilege access control.
  • Establish observability practices including structured logging, metrics, tracing, and incident response runbooks.
  • Drive technical leadership through code reviews, architecture reviews, and enforcing engineering standards.

Required Skills

  • 12+ years applied full stack engineering experience delivering production systems.
  • Expertise in React, TypeScript, state management, and component design systems.
  • Strong Java Spring Boot skills: API design, dependency injection, validation, and performance tuning.
  • Proficiency in GraphQL (schema design, federation, N+1 mitigation) and REST (OpenAPI, idempotency).
  • Hands-on AWS experience: IAM, networking, and operational tooling for cloud-native apps.
  • Data layer expertise with AWS Aurora PostgreSQL (advanced SQL, optimization) and AWS Neptune (graph modeling).
  • Event-driven systems experience with AWS Kafka (MSK), covering schema evolution and consumer groups.
  • Must have demonstrated proficiency using Claude Code and/or GitHub Copilot for development acceleration.

Preferred Skills

  • Infrastructure as Code (Terraform/CloudFormation/CDK) and containerization (Docker, ECS/EKS).
  • Experience defining platform standards, API governance, and reliability SLOs/SLIs.
  • Financial Services background and prior experience integrating with Oracle HCM.

Education

Bachelor's degree

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