FullStack Developer (React + NodeJS)

InnovatorSpark is a Software Development Company based in Cluj-Napoca, Romania. We choose to grow leaders by supporting our team to grow professionally and personally. This creates a deep sense of connection and responsibility. This creates a family.

We’re looking for a FullStack Developer with strong experience in React and NodeJS to join our team and contribute to building modern, scalable web solutions. You’ll work in a collaborative, fast-paced environment where quality and innovation are highly valued.

Responsibilities:

• Develop and maintain fullstack web applications using React and NodeJS (with TypeScript)
• Build and optimize scalable, secure RESTful APIs
• Optimize database queries and implement efficient indexing strategies
• Design and implement caching solutions to improve application performance
• Handle large-scale file operations efficiently
• Implement database sharding, replication, and data access patterns
• Plan and execute database migrations and scaling strategies
• Implement and maintain Stripe payment processing, including:

Recurring payments & subscription management

Payment webhook handling

Failed payment recovery flows

Payment reporting and reconciliation

• Write clean, maintainable, and well-documented code
• Participate in code reviews and contribute to technical discussions
• Collaborate with the team to identify and implement performance improvements

Requirements:

• Solid experience with React for frontend development
• Strong knowledge of NodeJS (including Express.js and API architecture)
• Problem-solving mindset and attention to detail
• Experience working in Agile/Scrum teams
• Expertise in ORM and database optimization

Nice to have:

• Experience with Stripe (checkout, subscriptions, webhooks, etc.)
• Familiarity with React Native
• Hands-on with AWS (ECS, S3, Lambda, CloudWatch) in a development context, collaborating closely with DevOps for infrastructure needs
• Basic experience with Python

We're waiting to meet you!✨