Sr. Full Stack Software Engineer

Job Title: Sr. Full Stack Software Engineer

Location: Jersey City NJ (5 Days Onsite)

Duration: long term

Type: Fulltime / Contract W2

Mode of interview: In-person presence is Mandatory at New jersey office

Job responsibilities

• Leads end-to-end delivery of full stack solutions using React Java Spring Boot GraphQL/REST and AWS-managed services from design through production support.
• Drives architecture and design reviews defining service boundaries API contracts data models and integration patterns.
• Develops secure high-quality production-grade code; conducts thorough code reviews; sets and enforces engineering standards.
• Builds and maintains highly available and scalable services with strong operational excellence: reliability performance cost awareness and maintainability.
• Implements and governs authentication/authorization using OIDC/OAuth2 token validation scopes/claims and service-to-service security patterns.
• Establishes robust observability practices (structured logging metrics tracing) incident response readiness (runbooks).
• Evaluates vendor and internal solutions (including architectural fit security posture scalability and operability) and guides adoption decisions.
• Partners with Product and UX to deliver outcomes; translates requirements into technical plans and milestones; proactively manages trade-offs.

Required qualifications capabilities and skills

• Minimum 10 years applied full stack engineering experience delivering and operating production systems; experience as a senior/lead capacity (technical leadership design ownership).
• React expertise: modern React patterns TypeScript state management component design systems performance optimization and responsive UI development.
• Java Spring Boot expertise: building APIs dependency injection validation error handling and performance tuning.
• GraphQL proficiency: schema design resolvers federation/composition patterns (where applicable) query performance (N1 mitigation caching) and API governance/versioning strategy.
• REST proficiency: OpenAPI-style contract design pagination/filtering idempotency backward compatibility and consumer-driven API evolution.
• OIDC/OAuth2: hands-on implementation with JWTs refresh/access token flows scopes/claims secure session patterns and least-privilege access control.
• AWS experience (hands-on): designing deploying and operating cloud-native applications; strong understanding of IAM networking basics and operational tooling (logs/metrics/alarms).
• Data layer expertise:
  • AWS Aurora PostgreSQL: advanced SQL indexing query optimization migrations and transactional design.
  • AWS Neptune: gremlin graph modeling query patterns and performance considerations for graph workloads.

• Event-driven systems:
  • AWS Kafka (MSK): topics/partitions consumer groups schema evolution ordering/at-least-once semantics idempotency retries/DLQs and operational monitoring.

• CI/CD and quality:
  • Strong Git practices automated testing (unit/integration/contract/e2e) code quality gates and release confidence practices (feature flags progressive rollout where applicable).

• AI-assisted engineering (MUST):
  • Demonstrated proficiency using Claude Code and/or GitHub Copilot to accelerate development debugging refactoring test generation and documentation-while ensuring correctness security and maintainability (e.g. validating outputs avoiding sensitive data leakage and adhering to team standards).

Preferred qualifications capabilities and skills

• Infrastructure as Code (Terraform/CloudFormation/CDK) and deployment automation patterns.
• Containerization and orchestration experience (Docker ECS/EKS) depending on platform direction.
• Advanced security practices: threat modeling OWASP Top 10 mitigation secrets management dependency hygiene.
• Experience defining platform standards: API governance event contracts service templates and reliability SLOs/SLIs.
• Prior experience integrating with Oracle HCM.

About Next Gen Software Solutions:

Next Gen Software Solutions is a trusted provider of IT Staffing and consulting services dedicated to empowering businesses with cutting-edge technology solutions and exceptional talent. We specialize in delivering tailored IT consulting services innovative software solutions and connecting businesses with highly skilled IT professionals. Founded and led by a dedicated U.S. Army solider Next Gen Software Solutions is deeply rooted in the core values of integrity discipline commitment and experience-principles that guide every aspect of our operations.

Equal Employment Opportunity Statement:

Next Gen Software Solutions is an Equal Opportunity Employer. We are committed to fostering an inclusive and diverse workplace where all employees and applicants are treated respect and dignity. We do not discriminate based on race colour religion sex (including pregnancy sexual orientation or gender identity) national origin age genetic information veteran status or any other legally protected characteristic under applicable federal state or local laws.