Senior Fullstack JavaScript / TypeScript Engineer (React / Next.js / Node.js)

Senior Fullstack JavaScript / TypeScript Engineer (React / Next.js / Node.js)

We are looking for a strong Fullstack JavaScript / TypeScript Engineer who wants to work on modern web applications, scalable frontend/backend systems, and real product challenges.

This role is for an engineer who:

• is confident working across both frontend and backend,
• understands the modern React ecosystem,
• can make independent technical decisions,
• knows how to build maintainable architecture,
• and wants to influence the product instead of simply completing tasks.

Responsibilities

• Develop and maintain frontend applications using React / Next.js
• Develop backend services using Node.js
• Work with TypeScript across the entire stack
• Build scalable and maintainable application architecture
• Integrate frontend applications with backend APIs
• Work with asynchronous workflows and modern state management
• Optimize frontend and backend performance
• Implement authentication and authorization flows
• Participate in technical and architectural decision-making
• Work with cloud services and deployment workflows
• Integrate AI-powered features or external AI services into products
• Collaborate with product teams and designers
• Write clean, maintainable, production-ready code

Requirements

Must-have:

• 4+ years of experience in JavaScript / TypeScript development
• Strong production experience with React
• Experience with Next.js
• Backend development experience with Node.js
• Solid TypeScript knowledge
• Understanding of modern frontend architecture
• REST API integration experience
• Experience with state management solutions
• HTML / CSS / responsive UI development
• Git workflows
• Understanding of web performance optimization
• Experience working with cloud environments
• Experience with AI integrations or external AI APIs is a plus
• English level sufficient for technical communication and documentation

Nice to have

• Fullstack architecture experience
• React performance optimization
• SSR / SSG / ISR experience in Next.js
• Experience with cloud platforms
• CI/CD workflows
• Docker
• Authentication / security best practices
• WebSocket / realtime application experience
• Experience building scalable frontend systems
• AI-assisted products or AI integrations
• Experience working closely with product teams
• Testing experience (unit / integration / e2e)

Who We Are Looking For

We are not looking for a “frontend-only developer.”

We are looking for a fullstack engineer who:

• understands the system as a whole,
• sees how frontend and backend interact,
• can independently own features,
• thinks about scalability and maintainability,
• and operates with senior-level engineering ownership.

Particularly valuable experience includes:

• building fullstack products,
• React + cloud knowledge,
• AI integrations,
• the ability to make technical decisions independently.

Tech Stack

• React
• Next.js
• Node.js
• TypeScript
• JavaScript
• REST APIs
• Git
• Cloud services
• Docker