Full-Stack Developer | .NET, Laravel, React, Flutter | API Architecture | Enterprise & SaaS Solutions
I build reliable, scalable software that solves real business problems — from enterprise-grade APIs to cross-platform mobile apps. With a strong foundation in both backend and frontend development, I work with startups, SMEs, and large organizations to deliver production-ready systems on time and with measurable impact.
Services
Full-stack web applications (React, .NET, Laravel)
RESTful & GraphQL API design and development
Cross-platform mobile apps (Flutter)
Enterprise portals and internal tools
SaaS platforms with authentication, billing, and dashboards
Legacy system modernization and API integrations
Tech Stack
Backend: .NET (ASP.NET Core), Laravel (PHP), Node.js
Frontend: React, Next.js, Tailwind CSS
Mobile: Flutter (iOS & Android)
Databases: PostgreSQL, MySQL, SQL Server, MongoDB
Cloud & DevOps: Azure, AWS, Docker, CI/CD pipelines
Auth & Security: JWT, OAuth2, role-based access control
What I Deliver
Scalable APIs powering high-traffic applications
Full-stack platforms with clean architecture and maintainable code
Mobile apps with seamless UX across iOS and Android
Systems built for long-term growth, not just the MVP
Why Clients Work With Me
Clear communication and structured delivery — no surprises
Business-aware development focused on ROI and performance
End-to-end ownership from architecture to deployment
Battle-tested in a high-stakes enterprise environment (Ethiopian Airlines)
Let's Scope Your Project
Reach out with your technical requirements or system goals. I'll deliver a structured proposal covering architecture, stack selection, API design considerations, and milestone-based delivery — so we align on expectations before a single line of code is written.
Desktop Application
Web Development
React
Flutter
Laravel
.NET Stack
Vibhor S.
Lucknow, India
$18/hr
5.0
1 jobs
A highly skilled and versatile Full-Stack Developer with 14+ years of experience building dynamic web and mobile applications. Expert in React, Node.js, and PHP frameworks, with a strong command of REST/SOAP APIs, database systems, and interactive front-end technologies.
Specialized in delivering end-to-end healthcare solutions, including Telemedicine, Remote Patient Monitoring (RPM), EMR systems, and insurance billing applications. Known for transforming complex business needs into clean, scalable code.
Core Expertise
Front-End: ReactJS, HTML5, JavaScript (ES6+), jQuery, Bootstrap
Back-End: Node.js, Express.js, Core PHP, CakePHP, Custom Joomla CMS
API Development: RESTful & SOAP APIs, Swagger/OpenAPI, 3rd-party Integrations
Mobile: Cross-platform web apps with responsive and intuitive UI/UX
Database: MySQL, MongoDB
Cloud & DevOps: AWS Lambda, API Gateway, WebRTC for real-time communication
Domain Focus – Healthcare Technology
With deep industry knowledge, I’ve delivered robust solutions for:
EMR & EHR Platforms
Telemedicine Portals using Node.js & WebRTC
Remote Patient Monitoring (RPM)
Insurance Billing & Claims Management Systems
HIPAA-compliant architecture and secure data flows
MySQL
PHP
MongoDB
Web Development
Node.js
ExpressJS
Bootstrap
React
Hybrid App Development
Muhammad A.
Gujranwala, Pakistan
$15/hr
5.0
17 jobs
💼 6+ YEARS EXPERIENCE |👨🏻🏫 BUSINESS ANALYST |🏅TOP RATED |🌟 5.0 STAR
🏅 Certified Business Analysis Professional (CBAP)
🏅 Microsoft Certified Business Analyst
🏅 IBM Certified Business Analyst
🏅 Google Certified Project Manager
🏅 Certified Atlassian JIRA Expert
Greetings, I hope everything is going well for you!
Your ideas deserve to be more than just thoughts they deserve to be brought to life with precision, clarity, and purpose. I give life to your vision, turning concepts into reality with expert software documentation that speaks to your needs.
I am a Certfied Business Analysis Professional (CBAP) and I provide software technical documentation services. I worked as a professinal business analyst, project manager, software requirement engineer, product owner and scrum master worked on various software documentation projects for for multinational orgnizations.
As a business analyst, I offer the following services:
• Developing system flow charts
• Identify system features
• Identify the system's functional requirements (FR's)
• Identify system's non-functional requirements (NFR's)
• Refining business ideas
• Requirement gathering
• Eliciting requirements
• Conducted research on business ideas
• Conducted system competitor analysis
• Compiling system competitor analysis reports
• Designing system process flows
• Making system site maps
• Designing system user flows
As a software requirements specialist, my expertise are:
• Listing software requirements (FRs, NFRs)
• Listing software features
• Software documentation (FSD, SRS, BRD, SDD)
• Compiling software scope document
• Software Requirement SpecificationS (SRS)
• Software business requirements document (BRD)
• Software design document (SDD)
• Functional Specification document (FSD)
• Product vision document
• Writing user stories (Agile development, Kanban, Scrum)
• Writing acceptance criteria
• Sofware entity relationship diagrams (ERD)
• Software database models
• Software architecture diagrams (layered, services, MBC, etc)
• Software State diagrams
• Software sequence diagrams
• Software use case diagrams
• Software use case scenarios
• Sofware feature listing
• Software use case document
• Expertise in Atlassian JIRA backlogs
Tools I used:
• Atlassian JIRA (Certified Atlassian JIRA)
• ClickUp
• Atlassian Confluence
• MS Office
• MS Visio
• MS Project
• Balsamiq
• Google documents
• Google Sheets
• Miro
• Lucidchart
Why you hire me...?
100% satisfaction in terms of on-time delivery I will send you samples before beginning your project because client satisfaction is my top priority. I am looking forward to working with you.
If you want to design or develop anything regarding software documentation I am available 24 hours a day, 7 days a week, I will develop every artifect according to your requirements.
Please contact me to discuss your ideas and requirments.
Thank you very much for reading my portfolio!
Muhammad Amjad
Software Specifications
Software Architecture & Design
System Analysis
User Stories
Software Architecture
Business Analysis
Process Flow Diagram
Requirements Specification
Business Process Modeling
Data Analysis Consultation
Requirement Analysis
Technical Documentation
Software Systems Engineering
Software Consultation
Agile Software Development
Naeem I.
Lahore, Pakistan
$20/hr
5.0
1 jobs
I am a Healthcare IT Consultant and Software Architect specializing in HL7 FHIR integration, EHR/EMR interoperability, Mirth Connect, and HIPAA-compliant healthcare software development.
I lead a healthcare software company building secure, scalable, and production-ready healthcare systems for U.S. healthcare providers, HealthTech companies, and healthcare software vendors.
With 15+ years of Healthcare IT experience and a background in healthcare law, I combine deep technical expertise with healthcare workflow and compliance knowledge to design solutions that are secure, interoperable, and built for real clinical environments.
What I Specialize In
I connect healthcare platforms including:
PointClickCare (PCC) - FHIR APIs, REST APIs, Mirth Connect, Billing API
Epic Systems - SMART on FHIR, CDS Hooks, FHIR Resources
AthenaHealth - OAuth2, REST APIs, Clinical Workflows
MatrixCare - HL7 v2, FHIR, Data Exchange
eClinicalWorks - EHR Integration, Clinical Data Exchange
Additional Experience: OpenEMR, PracticeQ, Custom EHR Platforms, Healthcare SaaS Applications
Healthcare Integration & Interoperability Services
✅ HL7 v2 Interface Development with Mirth Connect
✅ HL7 ADT, ORM, ORU, MDM Message Integration
✅ HL7 FHIR R4 API Development
✅ SMART on FHIR Applications
✅ CDS Hooks Integration
✅ REST API Healthcare Integrations
✅ OAuth2 / JWT Authentication Implementation
✅ Clinical Data Exchange Workflows
✅ CDA / CCD Document Exchange
✅ IHE XDS/XDS.b Integration
✅ Healthcare Middleware Architecture
✅ Healthcare Data Migration & Transformation
Healthcare Software Development
I build:
✅ Custom EHR / EMR platforms
✅ Healthcare SaaS applications
✅ Patient portals
✅ Telehealth platforms
✅ SNF and long-term care solutions
✅ Clinical workflow systems
✅ Healthcare API platforms
✅ AI-enabled healthcare automation solutions
Typical workflows I enable:
Patient Registration → Clinical Documentation → EHR → Billing → Claims → Reimbursement
HIPAA Compliance & Healthcare Security
Healthcare software requires more than coding. I help organizations build systems aligned with:
✅ HIPAA Security Rule requirements
✅ BAA readiness
✅ SOC 2 security controls
✅ Secure PHI exchange practices
✅ Audit logging
✅ Role-Based Access Control (RBAC)
✅ Encryption strategies
✅ Healthcare data privacy requirements
My Advantage
Most developers understand software. Most compliance professionals understand regulations. I understand both.
This means I don't just connect APIs—I understand the healthcare workflows, security requirements, and operational challenges behind those integrations.
Revenue Cycle & Healthcare Operations
✅ Healthcare billing integrations
✅ RCM workflow automation
✅ Claims workflow systems
✅ Clearinghouse integrations
✅ Office Ally integrations
✅ ePrescribing integrations
✅ Surescripts and Weno Exchange workflows
Technology Stack
Healthcare Integration: HL7 v2/v3, FHIR R4, Mirth Connect, REST APIs, OAuth2, SMART on FHIR, CDS Hooks, Webhooks, IHE Standards
Backend Development: C# / .NET, Python, Node.js, PHP
Frontend Development: React, React Native, JavaScript
Cloud Architecture: AWS, Azure, Google Cloud (HIPAA-compliant architectures)
Why Healthcare Companies Work With Me
✅ 15+ years of Healthcare IT experience
✅ Real-world EHR integration experience
✅ Strong understanding of clinical workflows
✅ Software engineering + healthcare compliance expertise
✅ Experience building production healthcare systems
✅ Ability to communicate with developers, clinicians, and executives
Portfolio Highlights
Project 1: Mirth Connect Integration for SNF (PointClickCare)
A Skilled Nursing Facility needed automated ADT and medication data transfer between PointClickCare and a local hospital.
Result: Developed custom Mirth Connect channels mapping HL7 v2 and FHIR resources. Reduced manual data entry errors by 95% and accelerated patient intake times by 40%.
Project 2: Custom EHR SaaS with FHIR R4 API
A HealthTech startup needed a custom EHR from scratch with full FHIR R4 API capabilities for third-party app integrations.
Result: Architected and built the backend using .NET Core with FHIR-compliant database design and OAuth2 security. Launched a production-ready application now serving multiple enterprise clients.
Project 3: Revenue Cycle Automation for Multi-Specialty Practice
A large practice with 50+ providers struggled with manual billing processes causing high denial rates.
Result: Integrated Mirth Connect with practice management, automated claims generation with HL7 ORM messages, and created denial management workflows. Denial rate reduced from 15% to 4%, claims processing time cut by 70%.
Let's talk. I can help you design, build, and secure the right solution.
Primary Skills
HL7 FHIR
Mirth Connect
EHR Integration
EMR Integration
Healthcare IT
Healthcare Interoperability
Healthcare Software Development
HIPAA
Compliance
Healthcare
Healthcare Software
Health Level 7
FHIR
Electronic Health Record
Electronic Medical Record
Mirth Connect
Healthcare Interoperability
Custom App
Healthcare IT
API Integration
API Development
AI App Development
AI Bot
Medical Billing & Coding
Epic Systems Medical Software
Athena Software Penelope
SaaS Development
Laraib A.
Rawalpindi, Pakistan
$10/hr
5.0
2 jobs
Virtual Medical Assistant | Medical Scheduler | EHR/ EMR | Billing Assistant | Patient Care Coordinator | CCM | RPM | GLP | Weight Loss Management Program | Laboratory Scientist | Microbiologist | Care Gap Coordinator | Telehealth Support.
As a Medical Scheduler and Virtual Medical Assistant, I support healthcare practices in the United States and the United Kingdom by facilitating accurate patient scheduling, effective patient communication, and other administrative and clinical responsibilities, all while ensuring full compliance with HIPAA regulations.
With nearly a decade of combined experience in clinical roles, including Laboratory Technologist and Microbiologist, as well as administrative functions, I offer a unique blend of medical knowledge and precise workflow management across Primary Care, Behavioral Health, Cardiology, and multi-specialty clinics.
My dual expertise bridges the gap between clinical understanding and administrative execution, ensuring accurate documentation, efficient workflow management, and improved patient care—especially for healthcare providers serving patients in the United States and the UK.
I have extensive experience working remotely with a wide range of specialties, including Primary Care Physicians, Psychiatrists, Behavioral Health Specialists, Nutritionists, Rheumatologists, Dermatologists, and Cardiologists. This exposure has strengthened my ability to manage sensitive patient interactions with professionalism, empathy, and full HIPAA compliance.
🔹 Core Expertise
Medical Scheduling & Patient Coordination
Behavioral Health & Psychiatric Patient Support
Insurance Verification & Benefits Coordination
Medication Refills & Prior Authorizations
Referral Management & Care Coordination
Medical Billing & Payment Posting
Pre-visit Planning & Chart Preparation
Medical Scribing & Clinical Documentation
Lab Orders & Pathology Report Handling
Fax & EHR Inbox Management
🔹 EMR / EHR Systems Expertise
AthenaOne
TherapyNotes (Behavioral Health)
PracticeQ
AdvancedMD
Tebra (Kareo)
TurboPT
NextGen
Collaborate MD
Charmhealth
Elation
🔹For billing and VOB
eClinicalWorks
Availity
DaqBilling
UHC portal
Cigna portal
With a strong foundation in laboratory sciences, I bring high accuracy in interpreting medical and pathology reports and in maintaining records precisely according to provider requirements.
I have also worked closely with a mental health nurse practitioner, gaining valuable experience in handling patients with behavioral and mental health needs, where empathy, patience, and clear communication are essential.
Previously, I have worked in reputable healthcare institutions including:
Shaukat Khanum Hospital
Fatima Memorial College of Medicine & Dentistry
Excel Labs
National Institute of Health Sciences
Isolation Hospital & Infectious Treatment Center
These roles strengthened my ability to perform effectively in fast-paced clinical environments while maintaining accuracy, compliance, and patient-centered care.
🔹 How I Can Support Your Practice
I bring a dependable combination of clinical knowledge and administrative expertise to help healthcare providers streamline operations and enhance patient satisfaction. My goal is to reduce your workload by efficiently managing day-to-day clinical coordination tasks, so you can focus more on patient care.
I am committed to delivering accurate, reliable, and compassionate virtual support tailored to your practice's unique needs.
I currently support an ongoing client and maintain capacity for an additional project with dedicated working hours.
Microsoft Excel
Quality Assurance
Patient Care
Appointment Scheduling
EMR Data Entry
Medical Records
Telemedicine
Medical Report
Care Converge Patient Portal
Google Docs
Muhammad zohaib A.
Rawalpindi, Pakistan
$6/hr
5.0
1 jobs
Muhammad Zohaib – Your Reliable Medical Billing & RCM Specialist
💼 *“Simplified Billing, Maximized Revenue – Let’s Optimize Your Revenue Cycle.”*
With **5+ years of hands-on experience** in **Medical Billing and Revenue Cycle Management (RCM)**, I help healthcare providers improve reimbursement rates, reduce denials, and maintain efficient billing operations. My goal is to manage the billing workflow smoothly so you can focus on delivering patient care.
### **Why Choose Me?**
✅ **Complete RCM & Billing Support**
I handle the entire billing lifecycle — charge entry, payment posting, AR follow-ups, denial resolution, eligibility verification, and prior authorization processing. Skilled in multiple EMR/EHR systems and payer portals.
✅ **Clean Claim Submission & Accuracy**
I prioritize correct coding and clean claim submission to reduce rejections and speed up payment turnaround.
✅ **Denial & Rejection Management Specialist**
I identify denial trends, submit appeals, fix root causes, and implement preventive strategies to maximize reimbursements.
✅ **Insurance Verification & Authorizations**
Accurate eligibility verification and timely authorization handling to avoid payment delays and claim losses.
✅ **HIPAA Compliant & Confidential**
Strict adherence to data privacy and security standards throughout the billing process.
---
### **RCM Services I Provide**
* Medical Billing & Coding Support
* Eligibility & Benefits Verification (VOBs)
* Prior Authorization Management
* Claim Submission & Tracking
* Payment Posting
* Denial & Rejection Management
* AR Follow-Ups & Collections
---
### **Specialties I Have Worked With**
Internal Medicine, Family Medicine, Behavioral Health, Mental Health, Cardiology, Pain Management, Neurology, Pediatrics, Physical Therapy, Chiropractic, and more.
---
### **Software & Portals Experience**
Kareo, AdvanceMD, eClinicalWorks, DrChrono, Practice Fusion, AthenaHealth, ChiroTouch, Availity, Navinet, Medicare & Medicaid portals, UHC, Aetna, Cigna, BCBS, Humana, etc.
---
**Let’s work together to streamline your billing workflow, reduce denials, and increase your revenue.**
📩 *Send a message to schedule a consultation.*
Medical Billing
Medical Billing & Coding
Preauthorization
VOB
Insurance Claim Submission
Payment Processing
Insurance Verification
Virtual Assistance
Customer Service
Data Entry
Project Management
ICD Coding
Healthcare Management
Administrative Support
Customer Support
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