Fullstack Developer (Golang, ReactJS, HRMS)

Job DescriptionOur HCM is an enterprise HR platform currently in active operation and continuous expansion. The system covers Core HR, Attendance, Payroll, Advance HR, Employee Self-Service (ESS), HR Development, Workflow Automation, System Integrations, and Custom Modules for Enterprise Clients.We are expanding the development team to build new features while maintaining and enhancing existing modules, working closely with both local and international teams. You will be responsible for building high-performance services in Go, stuning frontend and UX/UI in React with TypeScript and maintaining and modernizing core logic in C#/.NET and SQL. As a key member of a polyglot environment, you will bridge the gap between our high-concurrency modern microservices and our robust foundation backend, ensuring a seamless experience for our users.Key ResponsibilitiesDevelop new features and enhance existing functionalities across Core HR, Attendance, Payroll, Advance HR, Employee Self-Service (ESS), HR Development, Workflow Automation, System IntegrationsMaintain and refactor existing code to improve performance, scalability, and maintainabilityFrontend Excellence: Design and implement scalable, reusable components using React and TypeScript, ensuring strict type safety and optimal bundle performance.High-Performance Backend: Develop and maintain mission-critical microservices using Go, focusing on high concurrency, low latency, and clean API design (REST/gRPC).Backend foundation transformation: Support and refactor existing business logic within our C#/.NET ecosystem, transitioning legacy services toward modern architectures where necessary.Database Design: Write complex, optimized SQL queries and manage schema migrations. You should understand indexing, execution plans, and how to resolve locking issues.System Ownership: Take end-to-end ownership of features—from database schema design to frontend deployment and observability (monitoring/logging).Participate in technical design and solution discussionsWork closely with Business Analysts to clarify requirements and ensure correct implementationPerform code reviews and contribute to code quality standardsWrite unit tests and ensure sufficient test coverageInvestigate and fix production issues when required