Contract Senior Java Developer Jobs in San Sebastian, PR

Job Description:

We are seeking for a FullStack Engineer who can be solid individual contributor and can design and implement user interfaces, backend services, and integrations end-to-end. They deliver features with high code quality, collaborate closely with seniors/leads, and demonstrate ownership of modules and tasks within a sprint. Having a good Networking knowledge

Responsibilities:

Feature Delivery (UI + API)

• Build responsive, accessible front-end UI components and pages.
• Develop backend REST/gRPC APIs, business logic, and data models.
• Ensure clear contracts between front-end and backend.

Integration & Data Handling

• Implement CRUD flows, pagination, and state management.
• Integrate with authentication/authorization, telemetry/analytics, and storage systems.
• Consume external services: LLM endpoints, agent orchestration APIs, or RAG services (where applicable).

Quality & Testing

• Write unit/integration/e2e tests for UI and backend.
• Add input validation, error handling, and observability hooks (logs/metrics/traces).
• Maintain type safety, and documentation for features.

Performance & Reliability

• Optimize rendering, bundle size, and API latency; add caching and retries.
• Address N+1 queries, DB indexes, and query efficiency.
• Participate in on-call rotations or incident triage with guidance.

DevOps & CI/CD Hygiene

• Contribute to build pipelines, environment configs, and deployment manifests.
• Containerize services (Docker) and follow branching/versioning best practices.
• Manage feature flags, configuration, and secrets safely.

Collaboration & Communication

• Work with designers, product, QA/ and senior engineers.
• Provide clear status updates, capture decisions in ADR/design notes.
• Review peer PRs; accept feedback and iterate quickly.

Education and Experience Required:

• Bachelor's degree in computer science, engineering, data science, or closely related quantitative discipline. Master's degree is desirable.
• Typically, 4-7 years' experience.

Knowledge and Skills:

• Frameworks: React (preferred) / Angular ; modern hooks/patterns.
• UI/UX: HTML5, CSS3/Sass, Tailwind/Material; accessibility (a11y), responsive design.
• Languages/Frameworks: Python (FastAPI/Flask) or Node.js (Express/NestJS);
• APIs: REST/gRPC; pagination, filtering, versioning, OpenAPI/Swagger.
• Data: SQL (Postgres/MySQL) and NoSQL (Mongo/Redis); ORMs (SQLAlchemy/Prisma).
• Testing: pytest/Jest; integration and contract tests.
• Containers: Docker basics; compose; image optimization.
• CI/CD: GitHub Actions/Azure DevOps; pipelines, artifacts, environments.
• Cloud: Familiarity with cloud services (AWS/Azure/GCP) and environments.
• Observability: Logs/metrics/traces; dashboarding; alerting fundamentals
• AIIntegration (NicetoHave for AI Apps)
• Consume LLM/agent APIs; handle token/latency/cost controls.
• Work with RAG services (vector search endpoints); understand request/response patterns.
• Implement prompt/response logging and guardrails integration (basic filters).

#LI-Hybrid

Health & Wellbeing

We strive to provide our team members and their loved ones with a comprehensive suite of benefits that supports their physical, financial and emotional wellbeing.

Personal & Professional Development

We also invest in your career because the better you are, the better we all are. We have specific programs catered to helping you reach any career goals you have - whether you want to become a knowledge expert in your field or apply your skills to another division.

Unconditional Inclusion

We are unconditionally inclusive in the way we work and celebrate individual uniqueness. We know varied backgrounds are valued and succeed here. We have the flexibility to manage our work and personal needs. We make bold moves, together, and are a force for good.

Job:

Job Level:

Hewlett Packard Enterprise is EEO Protected Veteran/ Individual with Disabilities.

HPE will comply with all applicable laws related to employer use of arrest and conviction records, including laws requiring employers to consider for employment qualified applicants with criminal histories.

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