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Hallmark Global Technologies Inc Logo
Sr. Java Full Stack Software Engineer

Hallmark Global Technologies Inc

 

Jersey City, NJ, USA

Posted On: 14 days ago
Experience: 10+ years
Availability: Onsite
Openings: 1
Category: Java 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, GraphQL, and AWS-managed services, from design through production support.

This role is on-site.

Responsibilities

  • Drive architecture and design reviews, defining service boundaries, API contracts, data models, and integration patterns.
  • Develop secure, production-grade code; conduct thorough code reviews; set and enforce engineering standards.
  • Build and maintain highly available, scalable services with strong operational excellence, including reliability and cost awareness.
  • Implement and govern authentication/authorization using OIDC/OAuth2, token validation, and service-to-service security patterns.
  • Establish observability practices (logging, metrics, tracing) and incident response readiness, including runbooks.

Required Skills

  • 10+ years applied full stack engineering experience delivering and operating production systems in a senior/lead capacity.
  • React expertise: modern patterns, TypeScript, state management, component design systems, and performance optimization.
  • Java Spring Boot expertise: building APIs, dependency injection, validation, error handling, and performance tuning.
  • GraphQL proficiency: schema design, resolvers, federation patterns, query performance optimization, and API governance.
  • REST proficiency: OpenAPI-style contract design, pagination, idempotency, and consumer-driven API evolution.
  • AWS experience: designing, deploying, and operating cloud-native applications; IAM, networking, and operational tooling.
  • Data layer expertise: AWS Aurora PostgreSQL (advanced SQL, indexing, query optimization) and AWS Neptune (graph modeling).
  • AI-assisted engineering: demonstrated proficiency using Claude Code and/or GitHub Copilot for development and debugging.
  • CI/CD and quality: Git practices, automated testing, code quality gates, and release confidence practices.

Preferred Skills

  • Infrastructure as Code (Terraform/CloudFormation/CDK) and deployment automation patterns.
  • Containerization and orchestration experience (Docker, ECS/EKS).
  • Advanced security practices: threat modeling, OWASP Top 10 mitigation, and secrets management.

Education

Bachelor's degree

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