Sr. Software Engineer - Node.js (Payments Domain)

GSSTech Group; Dubai; On-site; AED 320,000 - 520,000; Full time

Job summary

GSSTech Group in Dubai is seeking a Senior Node.js Engineer to join our Technology Engineering team supporting Business Platforms & Payments initiatives. You will design, develop, and maintain scalable backend applications using Node.js, with RESTful and GraphQL services and a strong focus on microservices and distributed systems.

You will collaborate across Product Owners, Architects, QA, DevOps, and business stakeholders, applying modern testing, secure coding, and performance tuning

Qualifications

• Experience building enterprise backend systems with Node.js and TypeScript.
• Proficient in RESTful APIs and GraphQL design and implementation.
• Strong background in microservices and distributed architectures.
• Experience with relational and NoSQL databases (PostgreSQL, MySQL, MongoDB, Redis, DynamoDB).
• Solid testing discipline using Jest, Mocha, and Chai.
• Familiarity with cloud-native apps and containerization technologies.

Responsibilities

• Design, develop, and maintain scalable backend applications using Node.js.
• Architect RESTful and GraphQL services for enterprise web and mobile apps.
• Implement distributed microservices with focus on scalability and reliability.
• Write clean TypeScript/JavaScript and ensure best engineering practices.
• Integrate with relational and NoSQL databases, optimize performance and data consistency.
• Build secure server-side applications with strong auth and data protection.
• Collaborate with Product Owners, Architects, QA, DevOps, and stakeholders throughout the lifecycle.
• Participate in architecture discussions, code reviews, and governance.
• Implement unit, integration, and end-to-end tests; troubleshoot production issues.
• Contribute to CI/CD, release management, and deployment automation.
• Engage in Agile/Scrum ceremonies and continuous improvement.

Skills

Node.js

TypeScript

JavaScript

Express.js

NestJS

RESTful APIs

GraphQL

Microservices

Distributed Systems

Unit Testing

Integration Testing

End-to-End Testing

Asynchronous programming

SQL/NoSQL databases

PostgreSQL

MongoDB

Redis

DynamoDB

API security

Cloud-native / containerization

Tools

Spring Boot

Docker

Kubernetes

Git

CI/CD

Agile/Scrum

Job description

We are looking for a highly skilled Senior Node.js Engineer to join our Technology Engineering team supporting Business Platforms & Payments initiatives. The ideal candidate will have strong expertise in Node.js, modern backend development, distributed systems, and microservices architecture. Experience with Spring Boot will be considered a strong advantage.

Key Responsibilities

• Design, develop, and maintain scalable backend applications using Node.js.
• Architect and develop secure, high-performance RESTful APIs and GraphQL services supporting enterprise web and mobile applications.
• Design and implement distributed systems and microservices architectures with strong focus on scalability, resilience, fault tolerance, and high availability.
• Develop reusable, maintainable, and efficient JavaScript and TypeScript code following engineering best practices.
• Integrate backend services with relational and NoSQL databases while ensuring performance optimization and data consistency.
• Build secure server-side applications with strong authentication, authorization, and data protection mechanisms.
• Collaborate closely with Product Owners, Architects, QA Engineers, DevOps teams, and business stakeholders throughout the software development lifecycle.
• Participate in architecture discussions, technical design sessions, code reviews, and engineering governance.
• Implement comprehensive unit, integration, and end-to-end testing using modern testing frameworks.
• Troubleshoot production issues, optimize application performance, and ensure platform reliability.
• Contribute to CI/CD pipelines, release management, deployment automation, and engineering best practices.
• Participate in Agile/Scrum ceremonies including sprint planning, backlog refinement, stand-ups, and retrospectives.

Required Technical Skills

Backend Development

• Strong hands-on experience with Node.js.
• Experience developing enterprise backend applications using JavaScript and TypeScript.
• Experience with Express.js, NestJS, or similar Node.js frameworks.
• Strong understanding of asynchronous programming and event-driven architecture.

API Development

• Strong experience designing and developing RESTful APIs.
• Experience building GraphQL APIs.
• API versioning, authentication, authorization, and API security best practices.

Microservices & Distributed Systems

• Strong experience designing microservices-based architectures.
• Experience with distributed systems.
• Service-to-service communication.
• High availability and fault-tolerant application design.
• Scalability and performance optimization.
• Data consistency across distributed services.

Database Technologies

• Strong experience with both relational and NoSQL databases including:
  • PostgreSQL
  • MySQL
  • MongoDB
  • Redis
  • DynamoDB

Testing & Quality Engineering

• Hands-on experience with:
  • Unit Testing
  • Integration Testing
  • End-to-End Testing
• Using frameworks such as:
  • Jest
  • Mocha
  • Chai

Software Engineering

• Strong understanding of software engineering principles and design patterns.
• Clean Architecture.
• SOLID Principles.
• Secure coding practices.
• Performance tuning and optimization.
• Debugging and troubleshooting complex production issues.

DevOps & Development Tools

• Git version control.
• CI/CD pipelines.
• Automated build and deployment processes.
• Experience working in Agile/Scrum environments.

Nice to Have

• Hands-on experience with Spring Boot.
• Experience working on enterprise payment platforms.
• Exposure to Banking or Financial Services.
• Experience with cloud-native applications and containerized environments.
• Understanding of event-driven architecture and messaging systems.
• Exposure to API Gateway technologies.

Required Competencies

• Strong analytical and problem-solving skills.
• Excellent communication and stakeholder management skills.
• Ability to work effectively in cross-functional Agile teams.
• Strong ownership mindset with focus on quality, scalability, and delivery excellence.
• Ability to manage multiple priorities in fast-paced enterprise environments.
• Passion for writing clean, maintainable, and reusable code.
• Strong collaboration and mentoring capabilities.

Preferred Domain Experience

• Banking
• Payments
• Financial Services
• Enterprise Digital Platforms