ERP / HRMS & Internal Tools Engineer
Django HRMS, ERPNext/Frappe, biometric attendance, and internal workflow automation.
Why hire me as ERP / HRMS Engineer?
I build and customize the operational systems companies actually run on. I migrated and extended a Django-based HRMS for a ~200-employee workforce with biometric attendance sync, reporting endpoints, and manager dashboards; customized ERPNext/Frappe v16 with custom doctypes and a task-tree interface; and built a healthcare HL7 integration operations tool. This is unglamorous, high-trust work — and I'm good at it.
What I've shipped
- Migrated a Django-based HRMS (Horilla) for a ~200-employee workforce with attendance, contract, and reporting modules
- Implemented ZKTeco biometric attendance sync via Web API and designed a multi-device biometric schema
- Customized ERPNext/Frappe v16 with custom doctypes, server/client scripts, and an Asana-style task-tree view
- Built monthly and day-level worksheet reporting endpoints for attendance auditing and manager exports
- Added Celery/n8n automation, structured logging, and zero-downtime deploys for HRMS reliability
Core stack for this role
Relevant Projects
Work that directly demonstrates this specialisation.
Enterprise HRMS Migration & Automation
Migrated and extended a Django-based HRMS (Horilla) for a ~200-employee workforce with full backend ownership. Built attendance, contract, and reporting modules, implemented ZKTeco biometric sync via Web API, designed a multi-device biometric schema, and built monthly/day worksheet reporting endpoints. Deployed a Dockerized system on DigitalOcean with Nginx, Celery background jobs, structured logging, and zero-downtime rolling deploys.
- ~200-employee workforce
- ZKTeco biometric sync
- Reporting + manager dashboards
ERPNext / Frappe Customization & Internal Tooling
Customized ERPNext / Frappe v16 with custom doctypes, server scripts, client scripts, and page-level UI — including an Asana-style task-tree view for internal task management. Used the bench CLI and REST APIs for programmatic data management and bulk fixes, and researched ERPNext authentication/SSO options for integrating a custom Parts-Intelligence dashboard with ERP-backed access. Worked through role/permission, private-file, and reverse-proxy/WebSocket production concerns.
- Custom doctypes + scripts
- Asana-style task tree
- bench CLI + REST automation
Healthcare HL7 Integration Operations Tool
Built and debugged a web interface for healthcare HL7 integration operations, replicating key Mirth Connect Java-client workflows as a browser-accessible tool. Implemented operational features including message export, channel start/stop, deploy/undeploy, and column drag-to-reorder, plus authentication workflows. Produced Jira breakdowns for channel-operation features.
- Mirth Connect web tooling
- Channel operations
- HL7 message export
Industrial Parts Cost-Estimation Backend
Built REST APIs and normalized PostgreSQL schemas for an industrial parts cost-estimation and quote-generation platform. Implemented data-ingestion pipelines transforming UI-submitted manufacturing data into structured backend records, and created authenticated access patterns so AI/ML services could fetch user-specific estimation data for automated quote generation.
- Normalized PostgreSQL schemas
- Authenticated data APIs
- AI/ML quote-generation feeds
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Download ERP / HRMS Engineer Résumé (PDF)Frequently asked
What ERP and HRMS experience does Mubashir Rehman have?
Mubashir migrated and extended a Django-based HRMS (Horilla) for a ~200-employee workforce, including ZKTeco biometric attendance sync, multi-device biometric schema design, and reporting endpoints. He also customized ERPNext/Frappe v16 with custom doctypes, server/client scripts, and a task-tree interface, and built a healthcare HL7 integration operations tool.
Can he handle biometric and attendance integrations?
Yes — he integrated ZKTeco biometric attendance via Web API, designed schema for multi-device setups, and built monthly/day-level worksheet reporting for attendance auditing and manager review.
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