Principal Fullstack Engineer — AI Apps (Node/React)

Pragmatike; Boston (MA); On-site; USD 120,000 - 190,000; Full time

Benefits offered by this job

Sign-on bonus

Health, Dental, and Vision

401(k)

Job summary

Pragmatike in Cambridge, MA is seeking a Senior Full Stack Engineer to design, build, and scale modern applications using Node.js, React, and TypeScript. You’ll own features end-to-end, contribute to backend services and data models, and collaborate with product, design, and AI/ML teams to ship production-ready solutions.

Join a fast-growing AI startup recognized as a Top 10 GenAI company; relocation package available and start ASAP.

Qualifications

• 5+ years of experience as a Full Stack Engineer.
• Strong proficiency in Node.js (Express, NestJS, or similar).
• Strong proficiency in React and TypeScript in production environments.
• Experience designing RESTful APIs and working with databases (PostgreSQL, MongoDB, or similar).
• Solid understanding of modern web architecture and distributed systems fundamentals.
• Experience building scalable, secure, and high-performance applications.
• Familiarity with cloud environments (AWS, GCP, or Azure).
• Comfortable owning features and shipping to production independently.
• Strong collaboration skills across product, design, and backend/ML teams.

Responsibilities

• Design, build, and maintain scalable full stack applications using Node.js, React, and TypeScript.
• Architect and develop robust backend services, APIs, and data models.
• Build modern, production-grade web interfaces with React.
• Own features end to end, from technical design and implementation to deployment and production support.
• Optimize performance across the stack (frontend rendering, API latency, database queries).
• Collaborate closely with product, design, and AI/ML teams to ship user-facing features.
• Establish best practices around testing, code quality, observability, and CI/CD.
• Improve overall system architecture, scalability, and developer experience.
• Debug and resolve production issues across both frontend and backend systems.

Skills

Node.js

React

TypeScript

REST APIs

Databases

Cloud (AWS/GCP/Azure)

Distributed systems

Frontend/Backend ownership

Job description

Pragmatike in Cambridge, MA is seeking a Senior Full Stack Engineer to design, build, and scale modern applications using Node.js, React, and TypeScript. You’ll own features end-to-end, contribute to backend services and data models, and collaborate with product, design, and AI/ML teams to ship production-ready solutions.

Join a fast-growing AI startup recognized as a Top 10 GenAI company; relocation package available and start ASAP.