We are seeking an experienced and highly skilled Lead Developer to design develop and maintain scalable web applications and enterprise-grade solutions. The ideal candidate will have deep expertise in modern JavaScript TypeScript and cloud technologies with a robust understanding of frontend architecture backend services application security performance optimization and software design principles.

As a Lead Developer you will play a key role in designing technical solutions mentoring team members driving architectural decisions implementing best practices and delivering high-quality secure and maintainable applications.

Responsibilities

- Develop and maintain server-side applications using and NestJS writing reusable testable scalable and efficient backend code
- Design and implement RESTful APIs and GraphQL APIs for frontend services and third-party integrations
- Build secure authentication and authorization systems using JWT and role-based access control
- Integrate external services APIs and cloud-based solutions while implementing logging monitoring caching and error-handling mechanisms
- Optimize API performance and troubleshoot bottlenecks to ensure high availability and responsiveness
- Design and maintain database schemas and data models working extensively with SQL and NoSQL databases
- Optimize database queries and indexing strategies to ensure data integrity scalability and high-performance data access




- Develop and deploy cloud-native applications on AWS leveraging AWS services for hosting storage monitoring and scalability
- Participate in CI/CD pipeline implementation and deployment automation monitoring application performance and troubleshooting production issues
- Write comprehensive unit tests ensure high test coverage conduct code reviews and enforce development best practices using tools such as ESLint and SonarQube
- Apply frontend and backend security best practices to prevent and mitigate Cross-Site Scripting (XSS) Cross-Site Request Forgery (CSRF/XSRF) and CORS vulnerabilities including secure JWT token management and authentication workflows
- Design scalable and maintainable software architectures applying SOLID principles and design patterns such as Singleton Pattern mentor junior and mid-level developers and collaborate with cross-functional teams including Product Managers Designers QA Engineers and DevOps teams

Requirements

- 8 years of professional software development experience
- Proven experience building large-scale applications using JavaScript TypeScript and
- Expertise in GraphQL for API design and development
- Background in application architecture and performance optimization
- Skills in testing and cloud deployments
- English proficiency at an Upper-Intermediate level (B2) or higher

Required Experience:

Staff IC

📌 Lead Software Engineer + GraphQL (Gurugram)
🏢 EPAM Systems
📍 Gurugram