Build Time Tracking & Approval Workflow Module for Internal HR Platform

Overview We're building an internal workforce management platform and need a developer to build a focused time tracking and approval workflow module. This is a well-scoped, standalone module, not a full HRMS build. What needs to be built: Employee timesheet entry (daily/weekly log) Manager approval workflow (approve / reject / request revision) Role-based access: Employee, Manager, Admin Basic reporting dashboard — hours logged, approval status, team summary REST API backend + responsive web UI Mobile-friendly (React Native or responsive web) Tech stack preference: React.js (frontend) + Node.js (backend) + PostgreSQL. Open to equivalent stack if you can justify it. Who we're looking for: Someone who has built similar HR or ops tooling before. Share a relevant work sample or GitHub link. Bonus if you've worked on multi-tenant SaaS or similar approval-workflow systems. Note: This is a module build, not a full-platform engagement. Scope is fixed. Bidders who ask clarifying technical questions in their proposal will be prioritized. Expected delivery: 4–6 weeks from start date.