Senior Node.js/React.js Engineer (вакансія неактивна)

We are seeking a Senior Node.js/React.js Engineer join our team and help drive the development of a complex, high-load payment processing platform for our U.S.-based client. The platform handles subscription management, real-time reporting, chargeback resolution, and integrates with popular platforms such as Shopify, WordPress, QuickBooks, and more.

Tech stack:

Node.js (Nest.js), React.js, SQL/NoSQL, AWS, Payment service integrations

Responsibilities:

• Lead the design and implementation of backend services using Node.js (Nest.JS)
• Develop advanced frontend features and UI components in React.js
• Optimize database design and performance (PostgreSQL, NoSQL)
• Ensure security best practices across authentication and authorization layers
• Integrate with complex third-party APIs and payment systems
• Work with AWS services (S3, Lambda, ECS, CloudWatch, etc.)
• Implement and maintain CI/CD pipelines
• Architect scalable background processing with RabbitMQ or similar tools
• Write and maintain unit, integration, and E2E tests (Jest, Mocha, Cypress)
• Manage API versioning and drive API design best practices
• Set up application observability using Prometheus, ELK, OpenTelemetry
• Mentor junior/mid developers and conduct code reviews
• Take part in architecture decisions and planning sessions
• Collaborate closely with cross-functional teams

Requirements:

• 5+ years of commercial experience with Node.js
• 3+ years of experience with React.js
• Advanced knowledge of SQL/NoSQL databases and REST API development
• Proven experience in building scalable, high-availability systems
• In-depth understanding of AWS services and cloud-native architecture
• Expertise in automated testing, CI/CD, and DevOps practices
• Strong frontend development skills (React.js, state management, UI optimization)
• Experience leading feature delivery and mentoring team members
• Proficiency in written and spoken English (Upper-Intermediate or higher)
• Excellent communication skills, including daily interaction with international clients
• Proactive attitude and ownership mindset

Nice to have:

• Background in fintech or payment processing platforms
• Experience with event-driven architectures and microservices
• Familiarity with additional languages (Python, Java, Go)
• Exposure to regulatory and compliance topics (PCI DSS, GDPR)

If you’re a Senior Node.js/React.js Developer passionate about building impactful products and mentoring others, apply now and join a team where your voice will influence both technical solutions and product direction