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Full Stack Developer

Mastech Digital

New York · On-site Full-time Mid Level Today

About the role

We’re looking for a skilled Full Stack Developer to build scalable applications, modern APIs, and AI-powered features. If you enjoy working across backend, frontend, and cloud with the latest technologies, this role is for you.

What You’ll Do

  • Build and maintain REST APIs using Node.js and Express
  • Develop CRUD operations and manage data in MongoDB / Cosmos DB
  • Create serverless solutions using Azure Functions
  • Integrate AI/ML services (e.g., OpenAI APIs) to enhance application capabilities
  • Consume and integrate external APIs (JSON/Excel) using Axios
  • Write efficient and optimized backend logic and database queries
  • Develop responsive UI components using React
  • Collaborate with UX designers to implement user-friendly interfaces
  • Improve performance using WebSockets and Web Workers
  • Ensure code quality, security, and best practices

What We’re Looking For

  • 5–10 years of experience in Full Stack Development
  • Strong experience with JavaScript (ES6+), Node.js, and React
  • Hands-on with MongoDB / Cosmos DB
  • Experience building and consuming APIs
  • Familiarity with Azure ecosystem and serverless architecture
  • Experience with AI integrations / Generative AI / LLMs
  • Knowledge of prompt engineering is a plus
  • Experience with libraries/tools like Axios, Express, Material UI
  • Understanding of WebSockets, Web Workers, and performance optimization
  • Strong problem-solving skills and team collaboration mindset

Tech Stack

Node.js | React | MongoDB | Azure | Express | Axios | Material UI | WebSockets | AI/LLMs

Nice to Have

  • Experience with Excel data handling (XLSX)
  • Familiarity with Webpack
  • Exposure to NLP, search, or intelligent data extraction

Why Join Us?

  • Work on cutting-edge AI-powered applications
  • Opportunity to build scalable cloud-based systems
  • Collaborative and innovation-driven environment

Skills

AIAxiosAzureAzure FunctionsCosmos DBExpressJavaScriptLLMsMaterial UIMongoDBNode.jsOpenAI APIsReactServerlessWeb WorkersWebSockets

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