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Healthcare Technology

Medical Ocean

Enterprise EHR & Hospital Management Platform

Full Stack Developer
2023 - 2024

Medical Ocean is a comprehensive, enterprise-grade Electronic Health Records (EHR) SaaS platform designed to help healthcare organizations manage patient records, appointments, billing, and clinical workflows. The platform supports multi-organization and multi-location healthcare operations with real-time scheduling, standardized medical coding, and robust financial workflows.

The platform promotes interoperability, data-driven decision-making, and HIPAA-compliant healthcare operations for multi-location healthcare organizations. It features comprehensive patient management with demographics, medical history, allergies, vitals tracking, and ICD-11 medical coding integration.

Medical Ocean

Tech Stack

Next.jsHasuraPostgreSQLTailwind CSSShadcn UItRPCGraphQLTypeScriptZitadelNovuMetabaseMinIO S3FullCalendarPuppeteerRedux Toolkit

Project Gallery

Medical Ocean Scheduling

Real-time appointment scheduling with calendar integration

Medical Ocean Worklist

Practitioner worklist with live appointment status

Medical Ocean Patient Management

Comprehensive patient record management

Medical Ocean Invoicing

invoice management

Key Responsibilities

  • Worked as dedicated Full Stack Developer, collaborating directly with stakeholders on healthcare workflows
  • Designed and developed core modules including Patients, Practitioners, Organizations, Locations, and Appointment Scheduling
  • Built real-time scheduling system with worklists, waitlists, and live appointment status using Hasura subscriptions
  • Implemented event-sourcing architecture to maintain complete audit trails across healthcare and finance modules
  • Developed billing and finance modules including Invoices, Claims, Credit Notes, Refunds, and Payments
  • Implemented double-entry accounting logic (debit/credit) supporting partial payments and balance adjustments
  • Integrated WHO ICD-11, CPT codes, and dm+d medicine data model for standardized clinical documentation
  • Built secure, multi-tenant authentication using Zitadel OAuth with organization-level isolation
  • Implemented notifications for appointments and billing events using Novu and scheduled background jobs
  • Developed PDF generation workflows for invoices and reports using Puppeteer
  • Integrated secure file storage using MinIO/S3 with presigned URLs for medical documents

Key Achievements

  • Delivered scalable, multi-organization healthcare platform supporting real-world clinical workflows
  • Built production-grade appointment and scheduling system with live updates and waitlists
  • Implemented robust financial system handling invoices, partial payments, credits, and insurance claims
  • Designed event-sourced architecture ensuring data consistency for healthcare transactions
  • Enabled standardized medical documentation through ICD-11, CPT, and dm+d integrations
  • Improved developer productivity through type-safe APIs and GraphQL code generation
  • Built type-safe full-stack architecture with GraphQL, tRPC, and TypeScript ensuring zero runtime type errors
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