API Developer C2C jobs Location: Scottsdale, AZ or Austin, TX

Title: API Developer

Location: Scottsdale, AZ or Austin, TX

Duration: 6+ months

Client: PayPal

API Developer – API & AI Integration

 

 

Call Notes – API Developer Role

•             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. Key Focus Areas: • 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.

Tools / Technologies Mentioned:

•             Python and Java

•             GitHub (code repository and management)

•             Datadog (monitoring and observability)

 

Required Qualifications

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 PayPal 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 (GitHub 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 GitHub Enterprise (on-premise) and GitHub EMU environments

•             Strong understanding of Git workflows, branching strategies, GitHub Actions, and pull request processes

Agentic Workflows

•             Experience designing and implementing agentic workflows and autonomous systems

•             Understanding of workflow orchestration and event-driven architectures

•             Ability to build intelligent API-driven automation systems

Preferred Skills

•             Experience with GraphQL APIs

•             Knowledge of gRPC and other API protocols

•             Experience with API monitoring and observability tools (Datadog, Traceable), including programmatic access to APM span data, trace metrics, and traffic analysis via Datadog APIs

•             Familiarity with API management platforms

•             Experience integrating with additional payment providers (Stripe, Square)

•             Knowledge of microservices communication patterns

•             Experience with containerization technologies (Docker, Kubernetes)

•             Familiarity with Google Cloud Platform (GCP)

Technical Environment

•             Languages: Java, Python, Node.js

•             Frameworks: Spring Boot, Spring Cloud, Express, FastAPI

•             API Tools: Swagger/OpenAPI, Postman

•             Version Control: GitHub Enterprise (on-premise & EMU)

•             Payment Integration: PayPal APIs

•             Development Tools: AI-assisted coding tools (GitHub Copilot, Claude Code, Cursor)

•             Observability: Datadog APM APIs (v1 Metrics, v2 Spans Analytics)

•             Analysis: API endpoint extraction, traffic comparison, and code verification

 

Thanks & Regards,

Annu Kumari | annu.kumari@anviktek.com