JAVA API Developer C2C Hybrid ! Scottsdale, AZ or Austin, TX

Job Title

API Developer

Hybrid – Scottsdale, AZ or Austin, TX

6-12 month contract

Pay Pal

Phone and Video

The team is working on identifying dark APIs—APIs that exist in production environments but are not actively serving traffic. These dormant APIs may present potential security vulnerabilities, so the focus is on detecting and cataloging them. The initiative involves identifying all dark APIs, assessing their risk exposure, and classifying them accordingly.

• Detect and inventory all dark APIs currently in production.
• Conduct risk classification and security analysis for each API.
• Data sensitivity will be categorized into Class 1 through Class 3 data levels.
• Each API will receive a risk assessment score based on security exposure and data classification.
• APIs will then be onboarded to the organization’s API platform and properly cataloged for governance and monitoring.

• Python and Java
• Git Hub (code repository and management)
• Datadog (monitoring and observability)
• c – API & AI Integration
• Experience Level: 3–5 Years

• API Development (Core Focus)
  • 3–5 years of professional experience designing and developing RESTful APIs
  • Strong knowledge of API design principles, patterns, and best practices (REST, versioning, pagination, error handling)
  • Experience with API documentation tools such as OpenAPI/Swagger and Postman
  • Proven ability to design APIs for scalability, performance, and maintainability
  • Experience implementing API security (OAuth 2.0, JWT, API keys)
  • Hands‑on experience with API testing frameworks and methodologies
  • Understanding of rate limiting, throttling, and API gateway patterns
  • Experience managing the API lifecycle, including inventory, deprecation analysis, and code identification across large service environments
  • Ability to programmatically analyze API codebases (e.g., JAX‑RS annotations, OpenAPI specs) to extract endpoint metadata at scale
• Spring Boot Expertise
  • Extensive experience building APIs using Spring Boot and Spring Web
  • Experience with Spring Cloud for distributed API architectures
  • Strong knowledge of Spring Security for API authentication and authorization
• Node.js & Express
  • Experience developing RESTful APIs using Node.js and Express
  • Understanding of async/await patterns and event‑driven architecture
  • Familiarity with Express middleware, routing, and error handling
• Python & FastAPI
  • Experience developing APIs with Python and FastAPI
  • Knowledge of Python async/await patterns and type hints
• Payment API Integration
  • Hands‑on experience integrating Pay Pal APIs (REST APIs, webhooks, payment processing)
  • Understanding of payment workflows, transaction management, and reconciliation
  • Knowledge of secure payment data handling and PCI compliance considerations
  • Experience implementing webhooks and event‑driven payment processing
• API Governance & Analysis
  • Experience analyzing API traffic patterns
  • Ability to reconcile multiple data sources (APM traces, traffic logs, code analysis) to generate evidence‑based API lifecycle recommendations
  • Understanding of API observability concepts, including trace sampling, resource normalization, service attribution, and traffic aggregation
  • Experience building automated tools for API fleet analysis across large service environments (100+ services)
• AI‑Assisted Development
  • Experience using AI‑assisted development tools (Git Hub Copilot, Claude Code, Cursor, or similar)
  • Ability to leverage AI for API design review, code generation, and documentation
  • Experience using AI to analyze codebases and identify optimization opportunities
  • Proficiency using AI to accelerate API testing and validation
  • Experience building hybrid pipelines combining deterministic scripts with AI‑driven validation
  • Ability to design AI prompts and domain‑specific context for code analysis
• Version Control & Collaboration
  • Experience with Git Hub Enterprise (on‑premise) and Git Hub EMU environments
  • Strong understanding of Git workflows, branching strategies, Git Hub Actions, and pull request processes
• Agentic Workflows
  • Experience designing and implementing agentic workflows and autonomous systems
  • Understanding of workflow…