Senior Fullstack Developer - San Jose WFO-preferred

Location : (San Jose WFO-preferred)

We are looking for a Senior Full Stack Developer with 10+ years of total engineering experience having deep expertise in React.js, Node.js, Java Raptor, and a strong foundation in CI/CD, cloud deployments, and scalable architecture. The ideal candidate will bring a product-first engineering mindset, thrive in a fast-paced FinTech environment, and have hands-on experience integrating AI capabilities into production applications.

Detailed JD :

This role demands engineers who don't just write code they design systems, own outcomes, and relentlessly raise the bar on performance, reliability, and security

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Frontend	React.js, HTML5, CSS3, TypeScript, Redux / Zustand, Webpack / Vite
Backend	Node.js, Java Raptor, REST APIs, GraphQL, Microservices
Databases	PostgreSQL, MySQL, MongoDB, Redis, Elasticsearch
CI/CD & DevOps	Jenkins, GitHub Actions, Docker, Kubernetes
Version Contro	Git, GitHub / GitLab branching, PR workflows, release management
AI & ML	LLM API integration, GitHub Copilot, AI-assisted development, prompt engineering
Security	OAuth 2.0, JWT, TLS/SSL, PCI-DSS awareness, OWASP Top 10
Observability	Datadog, New Relic

Key Responsibilities

Frontend Engineering

• Architect and build performant, accessible, and scalable UI components using React.js with hooks, context, and advanced state management patterns (Redux, Zustand).
• Drive front-end best practices: component reusability, code splitting, lazy loading, and performance optimization.
• Collaborate with UX/Design to deliver pixel-perfect, responsive experiences aligned with PayPal's design system

Backend Engineering

• Design and develop high-throughput RESTful and GraphQL APIs using Node.js and Java Raptor in a microservices architecture.
• Build resilient, fault-tolerant services capable of handling PayPal-scale transaction volumes with low latency.
• Implement robust error handling, retry logic, circuit breakers, and observability (logging, tracing, alerting).

CI/CD & DevOps

• Own the full software delivery lifecycle from code commit to production deployment using CI/CD pipelines (Jenkins, GitHub Actions, or equivalent).
• Manage Git workflows: branching strategies, pull request reviews, merge policies, and release tagging.
• Deploy and manage services on cloud platforms (AWS, Google Cloud Platform, or Azure), leveraging containerization (Docker, Kubernetes).
• Monitor production systems, respond to incidents, and drive root cause analysis and post-mortems.

Scalable Architecture

• Design distributed systems that are horizontally scalable, highly available, and fault tolerant.
• Apply best practices in database design relational (PostgreSQL, MySQL) and NoSQL (MongoDB, Redis) for caching and session management.
• Drive architectural decisions through design documents, RFCs, and tech specs reviewed across engineering teams.

AI Coding & Feature Implementation

• Leverage AI-assisted development tools (GitHub Copilot, Claude, ChatGPT) to accelerate feature development, code reviews, and documentation.
• Integrate AI/ML models and APIs (LLMs, recommendation engines, fraud detection signals) into production features.
• Build intelligent automation for internal tooling, workflows, or customer-facing features using AI APIs and SDKs.
• Stay current with applied AI trends relevant to FinTech anomaly detection, natural language interfaces, predictive analytics.

Security & Compliance

• Build with a security-first mindset: OAuth 2.0, JWT, encryption at rest and in transit, PCI-DSS awareness.
• Conduct and participate in code reviews with a focus on security vulnerabilities, performance bottlenecks, and maintainability.

Nice to Have

• Experience in FinTech, payments processing
• Familiarity with event-driven architecture using Kafka, RabbitMQ, or similar.
• Experience with agile delivery at scale (SAFe, Scrum, Kanban).