Senior Full Stack Engineer

We are seeking a Senior Full Stack Engineer (10+ years experience) to design, build, and scale modern web applications. This role requires deep technical knowledge, strong system design skills, and cross-functional collaboration.

Senior Full Stack Engineer
Tech Stack: Java / Spring Boot (Backend) + React / TypeScript (Frontend)
Location: 12+ Month Contract
Location – Mountain View OR NY/NJ
Rate – $60 to $65 C2C
USC/ GC only if they are genuine. LinkedIn and visa copy is must
Need locals so it can be in person also after telephonic...but not mandatory. But possibility is there
Overview
We are seeking a Senior Full Stack Engineer (10+ years experience) to design, build, and scale modern web applications.
The ideal candidate will have:

• Strong backend expertise in Java and Spring Boot
• Strong frontend expertise in React with TypeScript
• Experience building cloud-native microservices and distributed systems

This role requires deep technical knowledge, strong system design skills, and cross-functional collaboration.
Key Responsibilities
Backend Development

• Design and build scalable microservices using Java and Spring Boot
• Develop and maintain RESTful APIs for web and mobile applications
• Ensure security, reliability, and performance of backend services
• Implement data access using SQL and NoSQL databases
• Integrate internal/external systems via APIs and event-driven architectures

Frontend Development

• Build modern UIs using React + TypeScript
• Develop reusable components using:
• Hooks
• Functional components
• Implement state management using:
• Redux / Zustand / Context API
• Integrate frontend with backend APIs
• Ensure:
• Performance optimization
• Accessibility
• Responsive design

Architecture & System Design

• Participate in architecture discussions and design reviews
• Design scalable, modular systems
• Apply best practices for:
• Performance
• Reliability
• Security

Cloud & DevOps

• Deploy applications on AWS, GCP, or Azure
• Build and maintain CI/CD pipelines
• Use containerization tools:
• Docker
• Kubernetes
• Implement monitoring, logging, and observability

Collaboration & Leadership

• Work closely with:
• Product managers
• Designers
• QA engineers
• Conduct code reviews and enforce best practices
• Mentor junior engineers
• Drive improvements in:
• Architecture
• Performance
• Developer productivity

Required Qualifications

• 10+ years of software development experience
• Strong expertise in Java + Spring Boot
• Experience building microservices and REST APIs
• Strong experience with React + TypeScript
• Deep understanding of:
• TypeScript
• Modern JavaScript (ES6+)
• HTML5 / CSS3
• Experience with:
• SQL (PostgreSQL, MySQL, Oracle)
• NoSQL (MongoDB, Redis, DynamoDB)
• Experience building cloud-native applications
• Strong understanding of system design and design patterns

Preferred Qualifications

• Event-driven systems (Kafka, RabbitMQ)
• GraphQL
• Testing frameworks:
• JUnit
• Jest
• React Testing Library
• Observability tools:
• Datadog
• Prometheus
• Grafana
• Security:
• OAuth2
• JWT
• Experience in Agile/Scrum environments

Key Technologies
Backend

• Java
• Spring Boot
• REST APIs
• Microservices
• SQL / NoSQL

Frontend

• React
• TypeScript
• Redux / Zustand / Context API
• HTML5 / CSS3

Infrastructure

• AWS / GCP / Azure
• Docker
• Kubernetes
• CI/CD pipelines

Thank you
Kailash Chandra
InterSources Inc.
E.

kailash@intersourcesinc.com

, C.510-500-5243
A. 39159 Paseo Padre Pkwy Suite 104 &106 Fremont CA - 94538
L: California / Arizona / New York / Canada / London / Costa Rica / India
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